Tuesday 29 December 2015

CNC brake & clutch levers.



CNC brake & clutch levers.

There was a scratch, well more of a little flat scrape on the tip of the original 'cast' brake lever from the previous owner, kind of like it had gone & scraped against the side of a wall. Most likely done along with those scratches on the bar end that side (a previous blog post). You know the kind of thing that happens to a bicycle all the time. It didn't effect how it works in anyway and I put a drop of black Hammerite on it, so it couldn't really be seen but, still it would be nice to replace it. Obviously it wasn't a big deal so I left it until now.

Looking on eBay at the spare parts I notice rather a lot of the new CNC aluminum levers, obviously you can't get one for this model 'particularly'. Well, maybe in the far east under one of its other guises there are 3rd party parts made especially for the bike, I don't know? I'm not particularly keen on cast levers I've had a clutch lever snap on an old Kawasaki years ago (It did get some usage) and cheaper quality Chinese Goped levers snap in two pieces before that were replaced with aluminium ones, and aluminum sounds good now too if I'm honest. Just for that if not aesthetic purposes.

However, I realise that body wise the bike is a clone of the previous shape Honda CBR 125, although it has more of an carbed reliable Honda 'CBF' type engine with the OHC, instead of the fuel injected engine of the CBR (not that it is a problem really as 4 - stroke single cylinder 125ccs generally all perform similarly in performance, it's just a reliable design for them to choose, as well as being implemented elsewhere on other bikes. You might squeeze a few more MPH out of some, the OHC will vibrate less than the OHV engines, but they are all pretty similar). So really it's a cross between the CBR and the CBF in a sense. Anyway, back to the body. Upon realising it's CBR 125 isms again I looked for a set of CNC levers for the CBR 125 / 125R 2007 - 2010 era. Then I checked them against the spare part original cast levers picture and they looked identical. It's not the main lever it's the part that fits to the bike, the black part on these particular CNC levers you need to look at. Now as an engineer I know full well that things could be well out between the two just from looking at a picture, it doesn't mean anything. The working 'design style mechanism' might just have been copied but the dimensions might well be different.

They were around the same price for the two mailed from the far east as the one spare original cast brake lever, so I thought bugger it, I'll take a risk & see. Now there are two types, long & short levers. I went for the long type as you can put your two or three fingers over the front brake for those times your still on the throttle, when you may need to brake. With the short ones you can't always do this. Now they come in all sorts of anodised colours and there's the original more generic choice of plain aluminum or anodised black. Of course I was sticking to the theme with gold, although the black would've been fine if there wasn't any in stock.

They're mainly ordered in from abroad and the far east on eBay but, postage is either free or very cheap anyway. Just as long as you don't mind waiting a couple of weeks. They have an adjustment switch, 1 to 6 which adjusts the lever to how you want it to sit to or from your fingers. They cost from about £9.00 up to around £20.00 from abroad, it's up to you to shop around on there, you will probably pay around £15.00 or so like me. Again, it's not a lot at all. The ones from sellers based in the UK were going for around £28.00 upwards and they're exactly the same thing so, it's up to you. If like me you already have usable levers, wait and pay less. If you've damaged yours and can't wait pay more & have them arrive quicker. Some were engraved but with 'CBR 125' you might not mind that if they're the only ones available at the time you're reading this but, I'm assuming since it's actually not a CBR 125 that the original plain ones will be the best bet.





 When looking at the fitting ends in this comparison photo below the CNC one looks bigger because it's closer to the camera but they are in fact the right fitting.


The hole diameter is the same and both notches fit ok and do the job they're supposed to do just fine.



The clutch handle is the same, everything fits fine.

Removing the brake lever and fitting this new one is really simple. Undo the nut underneath on the bolt holding the lever on there. Then undo and remove the bolt itself with a spanner or socket. The bolt should just pull out once the nut underneath is removed but it will be stiff, a few turns with the spanner or socket will work it out.



Once the bolt is removed you can swap the levers over and replace & tighten the nut / bolt. If you would like to add some grease to the bolt first, that's up to you. I would go for something thick like engineering grease or Vaseline not WD40 that will run all over the lever everywhere.





Now the clutch lever is a little different as you have to get the wire out the old lever and also put it back in the CNC lever. If your used to doing this sort of thing with the brakes on a bicycle then it shouldn't be much of a problem. The part that screws in on the end of the cable is moved to align its slot with the slot in the frame and so is the ring next to it, then the wire can be removed from under the handle & pulled through the slot.

However, it's easier to align the slots as mentioned above, as far screwed in as possible, just to get some slack for the cable, then just remove the bolt holding the lever on and pull the handle out moving the cable through the slots as you do, then you can easily remove the cable and put it into the new CNC handle. You can then of course locate the new lever and bolt it back down in reverse order. Then adjust the ring and screw so the cable is locked inside (the slots no longer align). The bolt is the same kind of thing as before, except that it has a flat head screw driver slot on the top, so you will need a flat head screw driver for that.






Once they've been fitted, obviously you want to drive up and down your street to check they both work fine and do everything as they should, before checking them again more throughly on the open road!

Although everything should be fine you don't want to find out your brake doesn't work just when you need it to!!

*edit.
 When buying these be savvy, there are some people selling the same product for around £150.00 vs. £15.00:



You're not really going to get any difference in quality regardless of a name on a box or website etc. At the end of the day it's still the same product CNC machined from a block of aluminum with the same ratchet mechanism and a couple of bolts.











































Monday 21 December 2015

Changing the front lights.


Changing the forward facing bulbs.

Ok, so on to the changing over of the bulbs. In fact changing the bulbs wasn't that big of a deal with this bike after all. I was having nightmares like some sports bikes of having to remove the whole front fairing. Which is where the more boring looking bikes with the old circular chrome headlights excel 'in easy bulb access'. After removing each side quarter panel faring as I call them (the little corner pieces that are joined to the front headlight fairing and the side fairing with three screws) you can actually get good enough access to each main headlight bulb from either side. However, if you are changing the riding light bulb you will find it easier to remove the speedo / dials gauge by the two bolts, there's a little locking pin in the middle the same as with on the side panels onto the petrol tank, this just needs to be pulled up out of the rubber ring and the speedo can be just moved to the side. It won't be completely free because of the cables that are still attached.
Obviously we are changing both lights out here at once and so the speedo being moved will also give a little more room for the main headlight section.

Riding light.




The riding light is located under the curved black plastic piece you can see in the above picture. You should be able to locate it by it's wiring leading up to it. The bulb is locked in place by the keyed rubber holder it's located in, that is turned and locked in the location. You will need to turn this in the opposite direction to unlock it, then you can pull it out to get to the bulb.


The bulb then will just pull out in an upwards motion from it's holder. Be careful not to use too much pressure or you will shatter the bulb into your fingers! The replacement will just slot back down into the holder, in this case we are using the L.E.D T10 replacements as shown in the previous blog post Do you see the light?



Just a quick test to see if it's working before I put it back in place and you can clearly see it's already much brighter as well as much more whiter opposed to the duller yellowish hue of previous, although using less wattage.


The same can be said when put back into the lens and turned to lock it back in place. Much more whiter and brighter through the lens.


The main headlight.

When it comes to changing the main headlight bulbs, theres a rubber cap on the wiring for the bulb which helps stop moisture getting onto the connection, this needs to be carefully moved / slid back on the wire to expose the bulb.


Then pull off the square black connector block.
After this there is a two pronged locking pin mechanism holding the bulbs in place. These need to both be un-hooked and then flipped back (they will flip right back) and the bulb can be removed.





Now you can put your new HS1 bulbs / replacements in place in reverse order. There are three tangs on the HS1 bulb's edge that locate as a key to the correct orientation of the bulb, so that shouldn't be a problem. Followed by making sure the rubber cover is back in place to keep the rain / water at bay.


Then once that's been done we can check the bulb works. And just repeat the process for the other side.


As mentioned at the top, if just changing these bulbs the speedo doesn't really need to be removed, just the quarter panels. And if your not changing dead bulbs then it's always wise to keep the original bulbs safe for a spare in an emergency!

Saturday 19 December 2015

Bar Ends.



Bar Ends.

The bar ends on the handlebars are supposed to be there to help with vibration felt through the bars / to help dissipate it. As well as tidying up the look of the ends.

There were a few scratches on the underside of one bar end from the previous owner, plus I saw some universal 7/8" bar ends for sale on eBay. I assumed my handle bars were 7/8", I didn't get my vernier out to bother checking. That's what made it a good little hop up, they were only a couple of £s. It's so simple anyone can do it. And if you really aren't sure after this there's bound sure to be a You Tube video or two on the web on the subject of fitting to follow.

There were a few different universal bar ends to choose from, mainly CNC style aluminum. I used to work for a company that produces CNC / turned components at one point in the past so I know what kind of thing to expect. There were also different colours to choose from with some anodising of the aluminum. I chose to keep with my obvious theme of black & gold.



The bar ends operate by pinching a rubber bung that fits over the main long screw, when it's squashed it expands inside the tube of the handlebar locking it in place. You have to screw the nut on the end quite firmly but not too hard, remember it expands and you need to get it in but, if it's too lose it won't tighten. When it's in place you can tighten it by tuning the screw from the front of the bar end.



After removing the old bar ends I decided to remove the new rubber bungs and reuse the old ones off the old bar ends. They are longer and a touch thicker. I know the new ones may well of still worked because they still need to expand but I knew these bungs work as they've just come from these particular handle bars and worked previously. I recommend you do the same, there's just more grip area for a solid lock. The nut was embedded in the end of my bung upside down, if yours is the same it will function just the same way and is the same size thread as my new screw so I didn't have to worry there. If not you could reuse your old bar end screw I've no doubt. The new screw was an Allen type, whereas the old one was of the Phillips type.



When removing the old bar ends loosen the screw which will stop / reverse the expansion of the bung and you should be able to pull and wiggle it out. Don't undo the nut completely or you will pull the bar end and screw out leaving the bung stuck inside!


 Once the bung is screwed on just right, insert the complete bar end into the handle bar. And wiggle it back in place. You could use a rubber mallet or the rubber coated handle end of an ratchet to tap it back into place. Remember a metal hammer will scratch & damage the bar end! If you want to use a lubricant to help it back in don't use WD40 on the bung because it destroys rubber! Instead try washing up liquid.


After the bar end is in place just tighten the screw to lock the rubber bung in place. And you've finished. 




The old bar ends were heavier than these newer aluminum ones. What effect that will have on the vibration issue or whether it will is unknown at this point in time.

Sunday 13 December 2015

New Battery / Alarm Immobilizer .



New Battery.

Anyone looking for a new battery for the bike should know that it takes a 'YT-X7A - BS' 12v size battery. Any battery with that code / no will fit.

A couple of weeks ago I bought a new battery as my original OEM one had finally become shatted. Of course I suspected the charging system might also be at fault like any vehicle (this bike uses a magneto / stator not an alternator system) but, after charging the original battery, using it for a week & it going tits up again and resorting to having to use the kick-start then using the new battery and it charging it fine and every thing is still ok, my hunch was correct.

Tayna Batteries is one such place that sells batteries online for a fair price:

https://www.tayna.co.uk/search/ytx7a

I would say the 'Powerline' battery is the best value on that particular list as it is only £9.99 & has the joint highest capacity at 7 Ah, it also has the second highest CCA at 130A. This means in laymens terms it performs better at cold temperatures (-18*c test temp) than one with a lesser rating. Not that the other one won't work in the cold, just that this one is better rated (cold cranking amperes). 

This is the battery I chose for the bike of course, as I think anyone would've been a fool to pay nearly £30.00 for one with a lesser spec & touching £40.00 for the one with a slightly higher CCA rating, for a 125cc. Not to mention you could of bought 4 of these if you were willing to throw £40.00 on a battery, not that it is entirely a good idea to do so as you could find them selling for £7.99 next year on special and you won't get through all those in a year.




I'll be honest though, it made me realise the kick-start really was a good addition to leave it on the engine. I did paint mine black with Hammerite simply because the silver stood out against the black paintwork, but it does come in useful from time to time. Otherwise you would have to of rolling (bump) started it with a low battery, which I did out of laziness while about to set off on a slope the once the other week with the bike. Button starts do use a bit of battery power to crank on motorcycles, you can see that by watching the voltage needle when using it. The kick-start none at all. I notice some newer Chinese models now leaving the kick-start off, a lot of European and Japanese bikes have for a while, I actually feel happy with it on. After all, you can't exactly bump something easily while sat at a junction if it stalls with a hooky battery. That won't happen now of course but again at some point in the future it may.


Lextek Alarm / Immobilizer.

These have been around for a while now and I finally bit the bullet and bought one for the bike. Not only do you get the alarm but in a sense you get a spare engine start button as there's a start button on the key fob.  Mainly for the price they're worth it just to bring yearly insurance down next time around, as obviously an alarmed bike means less to pay. However they do seem fairly loud from casing You Tube videos.



The alarm is a universal alarm and comes with a plug loom for just that (to be fitted by someone who knows what they're doing!) to fit to any bike. However, there is a plug that just fits onto Lexmoto bikes, into where a loop plug is temporarily placed, and it's just plug and play. However it's just finding or knowing before hand where exactly on your bike the plug is before taking things apart. I have a hunch that it's at the back under the glove box or in one of the back side fairings somewhere on the XTRS? I couldn't spy it while changing the battery but, there were some wires in the back side fairing I couldn't make out. I may get a better idea when changing the rear light bulb in the area but, I've been commenting You Tube vids of alarmed Skyjets etc in the hope of finding out, so far nothing. Of course I'll blog the install.



Friday 11 December 2015

Do you see the light?


Lighting improvements.

The headlights are ok / adequate but could do with being brighter. Of a night I generally find myself gravitating towards the high beam trigger a lot more than I should do. There is a switch but the trigger just seems the best for a momentary burst of high beam. Looking to see where some junctions / turn offs start at night being one of the issues before having to drop to low beam for on coming traffic. The low beams really should be good enough for this on approach and could do with being a bit brighter if at all possible.

I've heard stories about people using upgraded brighter bulbs on these bikes and in some instances melting the bulb mounting (not designed for such power output and gets too hot). Or with the the battery / electrical charging hardware (stator/magneto, voltage regulator etc) not being able to keep up with the power drain demands of the higher wattage bulbs and flattening the battery even whilest running. I've heard stories of people using just one higher power bulb instead of two to get around it. I wasn't going to do that.

First things first over the past couple of years there has been jumps in the L.E.D area of auto replacement bulbs. These L.E.Ds can match or in most cases be much brighter than bulbs and use a lot less wattage in the process.

What we need to do is look at the original specs for the bulbs in question.

The original bulb's specs:

Riding light: T10 fitments (original 1.7W output. Another is listed available at 5W output).

Headlight bulb: HS1 fitments (original 12v 35W output)

Rear / brake light: P21 fitments (original 5W output)

[the indicator bulbs have long since been converted to L.E.D and for that look back through the blog]


What we don't want to do is exceed the wattage, we want to match or undercut it to avoid any problems. Remember, it's possible to find brighter replacements that use less power output than standard bulbs. Finding running light & rear / brake light replacements that do will mean less draw on the stator and the battery going flat.

Running Light.

The running light is a light that gets used mainly in the day on a motorcycle, instead of the main headlight so you can be seen easier in traffic, especially on dull cloudy days. You would switch to main head lights at night of course. Although if your headlights fail it wouldn't provide much light but would perhaps allow other road users to see you and allow you to make your way back home carefully in an emergency. I would stick to well lit roads in such a situation. The dash also lights in conjunction as it does with main headlights. The running light is the small triangular light on the top. It is the equivalent of a car sidelights.

So we need to find a bulb that is much brighter than stock if possible and at a bonus uses even less power. I look to L.E.Ds of course for this. And Ebay is the best location. Sure enough there are many T10 fitting L.E.Ds on offer. Of course we need WHITE lights. It is illegal to drive around with green or blue or any other coloured lights on the roads. And they need to be in keeping with the dimensions of the original. They need to fit essentially. So any exaggerated length looking setups need to be avoided. And they need to be bright enough for our purposes. Since T10 fitting is the same for most car sidelights one designed or advertised for such a task would be great as it would both be bright enough and fit.

I decided on this 8 SMD option:
http://www.ebay.co.uk/itm/T10-CAR-BULBS-LED-ERROR-FREE-CANBUS-8-SMD-XENON-WHITE-W5W-501-SIDE-LIGHT-BULB-/281450157390?var=&hash=item4187bc954e:m:m9jxk3QjBoCvJEZpsOPy0HA


They have a brightness rating of 6000K & output less than 1W (Watt) in power! They only cost a couple of pounds (£s). I ordered two so I have a spare now for later, so I don't need to go looking again in future. That's another thing they tend to last much longer than bulbs anyway, if they are good enough quality. That's a little bit of our overall wattage output shaved off.

Rear / Brake light.

Now onto the rear / brake light. Any P21 fitting L.E.D brake light replacement of choice will do. Again it's a standard fitting for cars also. As such your likely to get a pack of two again and they should be equally as cheap. One thing you need to consider is which rear lens you have on the bike? If you have a red one with a white bulb you will need a white l.e.d (although a red one would still work fine behind a red lens. The light is going to be red no matter what). If like me you have the clear lens version then you definitely need a RED l.e.d!

I decided on this super bright 50 RED L.E.D option:
http://www.ebay.co.uk/itm/2x-380-RED-50-LED-1206-STOP-BRAKE-TAIL-LIGHT-BULBS-LAMPS-1157-BAY15D-P21-5W-12V-/271989652271?hash=item3f53d8bb2f:g:fQ4AAOSwKIpV-5TY



They output at 3.5 W where as the standard bulb was 5 W output. So that's a lot less again. They are coming from abroad but it's something you may have to consider waiting a couple weeks for if you can't find any local.

Main headlight.

Now this was the hard one (and arguably the most important and expensive). We already know that 45W HS1 bulbs etc were out of the question, we know they exist (or rather I do any way), not only do they get too hot, they draw too much power. Now, so far we've shaved a bit of power draw off elsewhere with our other replacements. At a push the rig could probably handle 37 / 38 W output now with out draining out the battery, if such an output bulb existed? However, we are still best looking at sticking to the standard 35W output of the original but brighter of course.

Again, I search for any L.E.D set ups with HS1 fitting. I find some 'CREE L.E.D' jobs which offer between 6000 - 10000K brightness with much less power usage (30W). There was an issue over whether they were legal for road use however. I think it was to do with the different colours available and white only being legal for road use. Of course it was the white I was looking at but, as I couldn't be sure and someone mentioning something about them working better with specially designed reflector coating (silver coating where you mount them) for focusing the beam, I decided to look elsewhere and picked up a packet of two 35W Japanese 4200K Xenon Super White Halogen bulbs from HIDS Direct for £9.99. I might order the Cree L.E.D.s and check them out at a later date but, at least I know these will work well and better than the originals for the meantime..

http://www.hids-direct.co.uk/hs1-12v-35-35w-xtreme-white-motorbike-atv-bulbs/




If I choose to fit them myself  (cheapest option) I will likely post another blog in future on the process, as it's not straight forward and involves the removing of fairings etc on most motorcycles just to change a bulb unlike most cars.

Since I use the bike for transport and all of my current bulbs are in good working order it wouldn't be wise for me to put it out of action to change the bulbs while I workout what exactly needs to be removed and what doesn't for this bike to change the various bulbs. If over winter there's a snow / ice period that it can't be used anyway then it might be a good time for me to do so.


Thursday 10 December 2015

Stuck clutch


Stuck Clutch.

I recently had a stuck clutch with the bike, it's a problem all motorcycles are susceptible to and usually if left unused for a while or if a motor oil like synthetic 10W 40 that is designed to be used in cars is used by mistake. This oil contains other additives which apparently does not work well with a clutch in a wet clutch scenario and over time can cause trouble. Of course a proper 10W 40 '4 stroke' motorcycle oil should be used. I'm assuming the previous owner used the correct oil type, however maybe it would make sense to do your own fresh oil change when purchasing a bike anyway, regardless of how 'full' it is. The bike was stood around for a little while as well over summer while spending a lot of time visiting sick relatives in hospital but, again I wouldn't of thought it long enough to cause the problem, however it was what it was and I had a stuck clutch.

It was a problem that was easily fixed, just a bit fiddly and a touch time consuming. All I needed to do was drain the oil by removing the sump bolt underneath, then remove the clutch cable from the actuator arm, remove the kick-start then open / remove the crank case to expose that part of the engine. Then you need to remove the clutch basket (there's a cir-clip to remove once you've removed the bolts & springs & took apart the front thrust plate assembly), open it up, remove the clutch plates and rings and clean them up with white spirit or petrol on a paint brush, then dry them with the airline or a dry rag and put it all back together and fill with fresh oil.



HOWEVER, to remove the clutch basket you need to remove the 'oil filter rotor' which over hangs the clutch basket and I couldn't get the 3 screws out myself without rounding the screws off. Using a blow torch on the area they are screwed in, so it expands to help loosen the screws always works wonders but was out of the question because of the proximity to the petrol tank. Rounding the screws off would be very bad as it wouldn't be able to be removed at all without destructive means of the oil filter rotor which then would have to be replaced with a new one. I had no choice but to take it to a mechanic shop with the means to remove the screws.


 I had also since discovered that a brand new set of clutch plates for Honda CG / CB or FMI 156/ 157 were about from only £7.00 on eBay if you have a look through the list. Although when cleaned the current plates would be fine, and another set I have in a clutch basket I bought from a breaker just in case the problem was much worse would also be fine (none were actually worn out), for the sake of seven quid I might as well replace the plates for new ones while I have the chance. You don't open the engine up like this all the time and replacing with new ones now means I won't have to replace due to wear for a longer length of time. So I asked the mechanic to fit the new plates before putting it back together for me.

In the end we have a working clutch again. But it's cost me for the sake of  3 oil filter rotor screws!

Clutch considerations.

Like mentioned before, in case it was a worse scenario than the 'stuck clutch' I purchased a cheap replacement whole clutch basket complete with plates and rings, from an online breaker. Coming from a 2013 XTRS. Now the basket, although able to fit (the dimensions are all the same for 156 / 157 FMI clutch baskets and are interchangeable engine to engine) there are a few differences. For a start it had a five bolt thrust plate opposed to the four bolt one already on the bike. This wasn't the problem however, the bearing was smaller and I only had a bush sleeve (known as the rod spacer on the parts page) to fit the lager bearing in the original basket, so the mechanic had to use that basket again. Luckily nothing was wrong with the old basket anyway. But it's something to consider. And something breakers should supply you with (the rod spacer to fit that baskets bearing size for 156 FMI engines) or indeed if your buying a general 156 / 157 FMI clutch basket new that's not necessarily labelled for the XTRS.



If you need to clean your plates and rings remember to pay attention to how they are assembled. There is a ring between every plate. Make a note of the correct order for when you reassemble. If you're not sure, we live in an age where you can take a photo on our phones of something for future reference. All in all it is a do able job, unless you get the same trouble I did with the 3 screws in the oil filter rotor. Believe me it's not worth knackering the screws, take it to a mechanic that has to deal with this stuff all the time. The only other option would be to get an angle grinder and cut the oil filter rotor where the screws sit, then buy a replacement oil filter rotor. If you manage to get the screws out I see about getting some decent steel replacements the same size and thread. I can't see any replacement screws on the CMPO site at a glance in any case.

CMPO clutch parts:

http://www.chinesemotorcyclepartsonline.co.uk/search.php?name=xtrs+clutch#results


Saturday 25 April 2015

Performance CDI success!


Success story.

Hurrah! Eventually there's been an breakthrough on the performance CDI front. After having the afore mentioned problems I've finally found a worker.

I noticed on EBay somebody selling an performance CDI unit specifically for an XTRS, excellent I thought. However the unit sold together with an adaptor from round to square plug sold for £50.00.



Fifty quid for a CDI? The average price for these CDI units is about £12.00. All the other units I tried previously didn't even total that. It was because they were so cheap I tried a few out. No way I fancied paying well over those odds. You can't blame them though. Supply and demand and all that and I sure as heck had my problems finding one that works. However, I'm smarter than that. I took a good look at the unit visually then took off to AliExpress.

The unit itself was yellow (which isn't a bad thing now is it?), that made it standout for finding one elsewhere. I found some. One thing I noticed was that on one of the components on the CDI's circuit board there was a coloured sticker or marker. Some were brown, red, blue, green etc. I figure this meant there was some slight kind of difference between the units. The one on the EBay model was a yellow sticker, I found one with a yellow sticker and with a square plug, no need for an adaptor. For about £15.00 and decided to take a gamble on it being identical. Well it worked, so whether it was identical or not I don't know? I would highly think so but, it works, which is all that matters.

Identified on the case as:

CG series 50 - 300cc
SW- CDI29



Just searching these details in an internet search engine I found a few more, again on AliExpress. Remember, to get the lowest price available it would be up to you to shop around on that site or elsewhere.

Video:
 





Thursday 16 April 2015

Changing the front wheel / belly pan



Belly pan.

I have not really done much more to the bike since last time. There really isn't anything much more to be done in all honesty now anyway.

I've carbon fibre wrapped the belly pan (a term that's used here for the part, if not elsewhere) for the bike which lines up with the side fairings and covers the underside of the engine.

It's been of for so long after the fitting of the exhaust and looking like an open engined style bike that I had forgotten what it looked like in it's completeness. Much better in my honest opinion.







Front wheel change.

After a while I had noticed there was a thorn in the front tire. A particularly nasty, long, sharp thorn that had some how managed to penetrate all the way through the rubber. The funny thing was there wasn't even really much of a slow puncture situation with the thorn in. Pulled out all the air rushed out in minutes, put back in and pumped up it would last for weeks at around the same pressure. Shades of cycling, obviously though it had to be changed.

The most straight forward thing to do here was to remove the front wheel and go get the tire on it swapped over for a new one without having the possibility of having to leave the bike overnight somewhere due to back log while it gets sorted out.

This left me with a dilemma. The front of the bike needs to rest down, so I will need another bare wheel at least to replace the one I took off, resting it down on a plank of wood on the garage floor so neither the floor or wheel is damaged.

I would even get a spare wheel out of it while we're at it and Ebay was the best source, looking for online breakers. It didn't have to be a new one for what I needed it for. A cheap one would suffice here. One with a tire, even a worn one would be a bonus as I wouldn't need to rest it on a plank of wood. I got lucky, VERY lucky. Not only did I get an A+ condition wheel, disc brake and bearings with a tire on it, the the tire was a brand new Michelin Pilot Sport, still with the rubber bobbles around the outer edges intact (the same tire I was likely about to replace with new, there isn't too much option amongst the decent brands at this size out there). So in essence I got the new tire I needed and all that was required was a straight swap of the wheels. I won't say how much I paid for the wheel & tire but it was just under half the price I would have paid to get just the new tire put on, which is a big bonus, and about the same price as the standard Chinese replacement tires (which got punchered here and I suspect was on from the showroom as the bike is not many months old).

It still seems best to have a new tire put on the wheel I took off anyway and in future I can just swap and change should anything similar happen or tread / bearing wears out etc.

I don't have tire changing equipment myself, however since these tires are not especially thick and therefore wouldn't be much of an hassle you could consider it a wise purchase for the future as a set tire irons would only set you back a few £s and a bead breaker about £25.00 - £35.00.

Removal.

Since you may find it useful and most people just take their bike down to the mechanic without having much of a clue, I thought I would document the front wheel removal process as it is a blog about the bike after all and is where we have been leading up to above.

First of all the bike (or the front of) will need to be raised at least about 2 inches off the ground for the wheel to be able to drop out. If you don't have the specialised motorcycle tools for this, which I'm guessing you don't, like a ramp etc then you will have to use a car jack underneath the engine block / chassis (the block in this case) with a plank of wood sandwiched between to protect the block from the jack and also spread the load across the bottom. It is slightly odd shaped at the bottom and the wood did not go in quite flush / flat but it worked out ok in the end. It's probably best to remove the exhaust main pipe first, but I was able to work around it. Obviously you don't want to crush the pipe.

If you want to get the bike up straight 90 degrees then you will have to have someone else hold the bike upright while you lift it up with the jack. I however left it on it's side stand and jacked it up from the other side only enough to give me enough room to remove the wheel. Slowly jack the bike up so you don't cause it to suddenly topple over. Again, somebody else stood to the side in case it does would be great. But you could always position it against something heavy or near by a garage wall (protecting the paint work that side with an old towel / cloths just in case it does fall). It seems to stay on it's stand the one side just fine with the bike lifted slowly just a few inches.

When the wheel is off the ground enough you can begin by removing the brake caliper and tying it back out of the way with a tie wrap / zip tie or even an old piece of string, on it's hose.

Start by bending back the tabs over the bolts with a screw driver, these stop the bolts from working loose or someone purposely loosening them with a spanner and there are 2 of them on the metal clip should you cold work or break one off during removal. You may need to give the screw driver a gentle tap with a hammer or mallet to bend it back. If you somehow manage to break off both tabs doing this job you will need to order a new part. It will work just fine without the tabs but the protection of the screws not working loose will be gone and you would have to keep checking they were tight. So you would still be able to use the bike until a new part arrived anyway.



Using a spanner and a mallet (they're in nice and tight just like we would want them to be) tap round and loosen the bolts before switching to a ratchet (if you've got sense) for quicker removal of the bolts. You shouldn't strike a ratchet with a mallet because you could damage the mechanism!


Once you have removed the two bolts and the metal strip you can remove the caliper and tie it back. I've used an old cloth here to stop it from scratching against anything.

Now on the one end of the wheel is the spacer and at the other is the speedometer gear casing with the cable attached to it.

Now we can begin to remove the wheel. To remove the spindle remove the nut at the one end while locking the the spindle in place with a spanner at the other end. Again you may find a few taps on the spanner with a mallet helpful.

Now on the one end of the wheel is the spacer and at the other is the speedometer gear casing with the cable attached to it. I removed the wheel with the cable still attached but think I may have stretched the cable removing the wheel and will order a new one just to make sure. When you take off the wheel I would do it very carefully or remove the cable from the gear housing first by unscrewing the screw on the side of the housing.

With the spindle nut removed we can tap out the spindle gently with a mallet and remove the wheel.

We use a mallet because it's softer than a hammer and won't damage the metal we are striking. If you don't have a mallet you can use a hammer with a piece of wood held in front of it, you hit the wood and it doesn't damage the metal underneath. This of course means you might need an extra pair of hands to help you.

It's a reverse of the procedure to put the wheel back on. There are 2 pins at the one side at the gear end, these go against the 2 pins inside the gear housing and drive the speedometer when the wheel turns around. They do NOT clip over the top of the pins inside the housing, I know it looks like they do but they don't, of course the spacer go's at the other end.






























Saturday 10 January 2015

Some useful sites.



Here you will find some useful sites when it comes to ordering things for this bike in regard to spares and the performance parts etc:


 Chinese Motorcycle Parts Online.

 http://www.chinesemotorcyclepartsonline.co.uk/?gclid=COT61_-disMCFUWWtAodxDsAxg


All main spare parts stocked here for this bike, as well as a few performance parts like exhaust systems / back boxes etc. Service is very good, parts seem to arrive next day or the day after from ordering.



Chinese Bike Spares.

http://www.chinesebikespares.com/


Again, a lot of spares available here for the bike under it's different guises and some special bits and pieces like gearing upgrade kits.


 China Parts.

 http://www.china-parts.co.uk/

You may find the odd part / universal part here. Although it seems to stock for most other brand of Chinese motorcycle. You might find something under one of the other guises for the bike.



Taipei Scooter Assassins.

http://www.exportstrength.com/

An oversees one here, the parts stocked are for the Kaisar & Skyjet names for the bike but, seem to be stocked for the KS125-23 XTR 125 ours of course is the KS125-24 XTRS 125. The body parts are the same but the engine as well as things like speedometers can be different. Which is where I likely had the problem with the CDI unit.

Haynes Manual.

Another useful thing to pick up would be the Haynes Manual on Chinese Motorcycles. The bike is covered but in more of a general sense with many of the other Chinese, Taiwanese and Korean branded bikes. Good if you really are a novice to the hands on approach but, really better when it comes to the CG 125 / 156fmi style engine and any problems there you might have. Haynes do a more in depth manual for the Chinese Supermotos but why they don't for this bike when they have many versions under different names also baffles me a little?