KymcoForum.com
Scooters - 125 to 300 => Agility 125 => Topic started by: docjones on September 13, 2010, 03:25:38 PM
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I'm pushing 9000 kms on my 125. When should I think about changing my drive belt? Has anyone driven theirs until the belt broke and if so how far did you get? Stock belts here in the states run about $47.00. Anyone use a gates as a replacement, if so what is the part #? What about kevlar, are they really worth the money? Thanks for your imput guys.
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At 12.500 kms the belt on A125 will reach service level indicated in service manual.
I think that 16-17.000 kms should be safe (I would not go on a long trip with it thought :).
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i think u dont need belt change untill scoot have big power change downwords...
12k is about time, but u can only clean and inspect...u will felt it....
cmon scoots got only 10hp..
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..my oem belt broke at 30,000kms...
..it's actually the incident that brought me to this forum...
peace
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I'm pushing 9000 kms on my 125. When should I think about changing my drive belt? Has anyone driven theirs until the belt broke and if so how far did you get? Stock belts here in the states run about $47.00. Anyone use a gates as a replacement, if so what is the part #? What about kevlar, are they really worth the money? Thanks for your imput guys.
I'm at 10.200km, the belt is showing significant wear and I'm waiting for a new one to come in
(actually waiting for 13g roller weights..).
A snapped belt can lock the rear wheel while you're riding.. I wouldn't mess around with it.
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i think u dont need belt change untill scoot have big power change downwords...
12k is about time, but u can only clean and inspect...u will felt it....
cmon scoots got only 10hp..
The power alone is irrelevant, or 50cc scooters would never wear their belts out,
and most do even before 10.000km. Peugeot 50cc scoots have 5.000km replacement
intervals for example.
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I'm at 10.200km, the belt is showing significant wear and I'm waiting for a new one to come in
(actually waiting for 13g roller weights..).
A snapped belt can lock the rear wheel while you're riding.. I wouldn't mess around with it.
This is certainly not normal.
Like I said, around 12.500 kms it is still completely OK. You could expect 16.000 kms out of it for sure.
Is everything fine with variator and clutch otherwise? No strange noises, vibrations or shudder?
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This is certainly not normal.
Like I said, around 12.500 kms it is still completely OK. You could expect 16.000 kms out of it for sure.
Is everything fine with variator and clutch otherwise? No strange noises, vibrations or shudder?
Nope, it's running perfectly and should probably be fine for 2-3k more, but I'm keeping it safe
and will replace it along with the rollers, since they're half worn also, and I'd like to try a lighter
set.
The local dealer only has 12,4g set (which is about the same as 3x14 & 3x11g that you have) but
I'd like to keep it a bit heavier.
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Nope, it's running perfectly and should probably be fine for 2-3k more, but I'm keeping it safe
and will replace it along with the rollers, since they're half worn also, and I'd like to try a lighter
set.
The local dealer only has 12,4g set (which is about the same as 3x14 & 3x11g that you have) but
I'd like to keep it a bit heavier.
If you go lighter, you will have lower top speed and possibly higher consumption as you will drive all the time at higher revs.
Depends what you want, acceleration or top speed.
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..a snapped belt de-formed the moveable driven face in my clutch on my ppl 50...
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doc..
kevlar is improved belt and has lots to gain in high temperature.
But use only right size belt, its few cm longer then serial. Got my kevlar broken and bought multivar.
Changing belt which is only slightly used, dont make any sense. U have service manual and inspect it...
I think thats only thing ill do after tuning this slow beast is 12g sliders, for start.
Next is exaust, with changing hole size on exit gases from gy6. 125cc has 50cc exaust?
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If you go lighter, you will have lower top speed and possibly higher consumption as you will drive all the time at higher revs.
Depends what you want, acceleration or top speed.
Yeah, that's the general rule.. but get it just right and you might end up with
same top speed at same revs, but better acceleration due to higher revs at
lower speeds.
I have no idea how and why this happens, but I've seen it more then once.
Anywhu, I'd like just a tad lighter then my 14g setup to get rid of the 40-60km/h
flat spot.
I usually don't ride over 80km/h.
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I would look at the jetting for your flat spot. Raise the needle a click could put you right on.
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I would look at the jetting for your flat spot. Raise the needle a click could put you right on.
The jetting is fine and the flat spot at the mentioned speed a feature of every Agility 125
(and some other 125cc Kymcos that I've tried).
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No flat spot with 3x14 & 3x11g , but you have to change them every 5000 kms because 14gs become completely torn.
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No flat spot with 3x14 & 3x11g , but you have to change them every 5000 kms because 14gs become completely torn.
That's the reason I'm trying to get all 6 the same size.. should last longer.
Kymco makes 12,4g rollers which are as close as it gets to your 11&14g setup,
about 150kn in Kymco shops. Maybe you'll have better luck with those.
I'm still waiting for a reply on 13g ones..
AutoKreso used to have all kinds and sizes, NONE available now.
Go figure.
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What is the belt size for the A125? I cant find the sizing in the service manual.
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That's the reason I'm trying to get all 6 the same size.. should last longer.
Kymco makes 12,4g rollers which are as close as it gets to your 11&14g setup,
about 150kn in Kymco shops. Maybe you'll have better luck with those.
I'm still waiting for a reply on 13g ones..
AutoKreso used to have all kinds and sizes, NONE available now.
Go figure.
First time drove A125 with Dr. Pulley 13g sliders, after three weeks took it to work.
Overall, it feels more like OEM 14g roller weights up to 80 km/h (did not get the chance to drive it faster due to configuration of the road). There is again a "no power" flat spot, but now it is between 35 and 40 km/h and does not present a problem. With mixed rollers it was even lower.
I think it is geared higher now and will have higher top speed than with OEM rollers, comparable to the top it had with mixed rollers. Will have to go to highway to test it though.
The acceleration is very smooth and effortless and it has slightly different noise from the vario, but just a tad.
Now I have a shudder when starting, quite pronounced. How did you fix it in the end, cleaned the clutch? Were the clutch pads glazed?
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What is the belt size for the A125? I cant find the sizing in the service manual.
NHF but do your homework using search engine.
http://www.kymcoforum.com/index.php?topic=1493.0 (http://www.kymcoforum.com/index.php?topic=1493.0)
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First time drove A125 with Dr. Pulley 13g sliders, after three weeks took it to work.
Overall, it feels more like OEM 14g roller weights up to 80 km/h (did not get the chance to drive it faster due to configuration of the road). There is again a "no power" flat spot, but now it is between 35 and 40 km/h and does not present a problem. With mixed rollers it was even lower.
I think it is geared higher now and will have higher top speed than with OEM rollers, comparable to the top it had with mixed rollers. Will have to go to highway to test it though.
The acceleration is very smooth and effortless and it has slightly different noise from the vario, but just a tad.
Now I have a shudder when starting, quite pronounced. How did you fix it in the end, cleaned the clutch? Were the clutch pads glazed?
Sounds good, I read that even when you replace the stock weights with the same weight
pulleys you still get better acceleration. I'm starting to doubt that my weights are 13g, they're
probably 12,4g.. This thing just revs too much.
I've done a short trip on mine last weekend and ended up with 3,8l/100km averaging 50-52mph.
That same ride with previous roller weights and never under 55-60mph resultet in 3,13l/100km.
How much did you pay for the DR.Pulls?
Shudder was fixed by cleaning the clutch and everything around it, but it came back in a day or
so, the pads were glazed just slightly, that shouldn't have caused the problem.
The easiest way to fix it was to open the throttle all the way, pull in both brakes.. and then
slowly let go of the brakes just enough to make the bike roll.. 2-3mph.. Repeated that 3-4
times, by the time you could smell the burning clutch.. it was fixed permanently.
Got 15.000km on the clock now, the problem never came back.
You put the dr pulleys the correct way in hopefully?
Probably just greasy hand are the cause of your problems.. that'll also fix itself but can
be very annoying.
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Shudder was fixed by cleaning the clutch and everything around it, but it came back in a day or
so, the pads were glazed just slightly, that shouldn't have caused the problem.
The easiest way to fix it was to open the throttle all the way, pull in both brakes.. and then
slowly let go of the brakes just enough to make the bike roll.. 2-3mph.. Repeated that 3-4
times, by the time you could smell the burning clutch.. it was fixed permanently.
Had the same problem, started to get really annoyed with the shudder. Today I did the method you described, and the shudder is gone!!!
Thank you Cortez!!!!
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Had the same problem, started to get really annoyed with the shudder. Today I did the method you described, and the shudder is gone!!!
Thank you Cortez!!!!
Glad I could help.. ;D
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I have 17,000 k on my belt but i do have a little shudder at 75mph. i think im gonna replace my belt too. It still has the stock kymco belt. I can tell a little diffrence in performance where my belt is stretched a little. Im afraid to go really far on it till i get a belt. Ive still not decided between kevlar, aftermarket like athena, or going back with a oem kymco belt. Anybody?
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I have 17,000 k on my belt but i do have a little shudder at 75mph. i think im gonna replace my belt too. It still has the stock kymco belt. I can tell a little diffrence in performance where my belt is stretched a little. Im afraid to go really far on it till i get a belt. Ive still not decided between kevlar, aftermarket like athena, or going back with a oem kymco belt. Anybody?
OEM belts, as you can see, last a very long time.
I replaced mine at 10.000km and it was like-new.
I woulnd't go over 15-16kkm with stock though (10k miles).
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I would recommend the oem belt and I have them in stock for 39.95. I also have the athena belt for 15.95.
jenny
TNT cycles
717-453-7265
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I picked up a Malossi X Kevlar Belt - Kymco 125 - 795x19.8x30 for $55 shipped online. Don't remember what site I got it from. Works well, seems to have less slap or vibration than the stock OEM one.
It enabled me to run lower weight sliders too. Now running 3-10.1 & 3-11.5 sliders. Might up the 11.5s to 11.8.
In a tuck, able to hit 62 on the GPS, about 68mph indicated. Drafting a car, about 68 GPS.
I'm running the NCY GY6 Trans kit.
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What is the belt size for the A125? I cant find the sizing in the service manual.
795x19.8x30
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I would recommend the oem belt and I have them in stock for 39.95. I also have the athena belt for 15.95.
jenny
TNT cycles
717-453-7265
You dont accept pay pal yet thought . Right?
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I DO NOT ACCEPT PAY PAL JUST VISA MC OR DISCOVER