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Post by insanesmc on Apr 14, 2019 10:03:53 GMT -5
Hello, i have a problem when i ride couple of kms my scooter stops acceleration and doesnt really respond to throttle but if i stop and then accelerate its fine for couple hundread meters before it does it again. The issue started after i got Gianelli Extra Chrome and 101_octane adjustable clutch. I have 4.5g rollers 139qmb stiffer contra spring and stiffer clutch springs(dont know the rating on them) i dont know if its a clutch overheating issue or what and sometimes it seems like it gets stuck on high gear. Ive checked everything multiple times but cant find the issue.
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Post by oldgeek on Apr 14, 2019 11:20:34 GMT -5
 without knowing your setup it is hard to say, but it seems your CVT is the issue. A stiffer contra spring, especially on a stock setup is likely unneeded. And stiffer clutch springs are usually only used on a piped setup to bypass the poor low end torque caused by the pipe. I would start with a complete inspection and service of the torque driver, as shown here 49ccscoot.proboards.com/thread/357
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Post by insanesmc on Apr 14, 2019 13:15:58 GMT -5
Well i have a 50cc motoforce cylinder which has slightly bigger transfer ports and exhaust, im running 80 main jet with 12mm carb which is stock and the gianelli exhaust pipe is a sport pipe i guess its meant for 50cc cylinder so its better for performance.
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Apr 15, 2019 10:01:28 GMT -5
Why the extremely light weights ? Standard is 9g. You will be better off using standard weights and contra with your setup. I guess your problem is your engine over revving.
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Post by insanesmc on Apr 16, 2019 9:49:42 GMT -5
Why the extremely light weights ? Standard is 9g. You will be better off using standard weights and contra with your setup. I guess your problem is your engine over revving. sorry im must have been sleepy when i wrote that i was suppose to but 7.5g. And i greased and cleaned the rear pulley assembly but no effect. |
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Apr 16, 2019 17:43:17 GMT -5
Why the extremely light weights ? Standard is 9g. You will be better off using standard weights and contra with your setup. I guess your problem is your engine over revving. sorry im must have been sleepy when i wrote that i was suppose to but 7.5g. And i greased and cleaned the rear pulley assembly but no effect. Ok. I think your 139 contra is to soft and cant stand the heat after some driving. The std contra is quite stiff on these Peugeots an most likely stiffer than the 139-contra you put in. I'd go for std contra and 8.5-9gram weights. |
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Post by insanesmc on Apr 17, 2019 9:11:19 GMT -5
sorry im must have been sleepy when i wrote that i was suppose to but 7.5g. And i greased and cleaned the rear pulley assembly but no effect. Ok. I think your 139 contra is to soft and cant stand the heat after some driving. The std contra is quite stiff on these Peugeots an most likely stiffer than the 139-contra you put in. I'd go for std contra and 8.5-9gram weights. well i changed my stock clutch back with the stiffer springs but it just got worse and the 139 spring is little bit longer but i might try it with the stock spring and i dont have stock rollers only some 10g ones |
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Apr 17, 2019 9:37:39 GMT -5
Ok. I think your 139 contra is to soft and cant stand the heat after some driving. The std contra is quite stiff on these Peugeots an most likely stiffer than the 139-contra you put in. I'd go for std contra and 8.5-9gram weights. well i changed my stock clutch back with the stiffer springs but it just got worse and the 139 spring is little bit longer but i might try it with the stock spring and i dont have stock rollers only some 10g ones You can put in 3 of the 10g and 3 of the 7.5g That will equal 8.75g pr roller. That's near perfect. They will of course have to be put in 10g/7.5g/10g/7.5g/10g and so on, to prevent in balance. |
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Post by insanesmc on Apr 17, 2019 12:40:42 GMT -5
well i changed my stock clutch back with the stiffer springs but it just got worse and the 139 spring is little bit longer but i might try it with the stock spring and i dont have stock rollers only some 10g ones You can put in 3 of the 10g and 3 of the 7.5g That will equal 8.75g pr roller. That's near perfect. They will of course have to be put in 10g/7.5g/10g/7.5g/10g and so on, to prevent in balance. Okay ill change them tonight and update tomorrow if it was better |
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Post by rancevas on Apr 17, 2019 13:13:45 GMT -5
1. Make sure the CVT belt is free of grease. If it has any grease on it at all, your performance will be impacted significantly
2. Make sure the front pulley (the one connected to the crankshaft) is tightened to correct specifications.
Have you done anything else to the scooter besides the custom clutch?
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Post by rancevas on Apr 17, 2019 13:17:51 GMT -5
If I were you I wouldn't even bother with weights. They don't change the performance that drastically. But eh, maybe worth a shot if all else fails. I am 90% sure that the issue is with slipping CVT belt.
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Post by insanesmc on Apr 17, 2019 13:29:44 GMT -5
1. Make sure the CVT belt is free of grease. If it has any grease on it at all, your performance will be impacted significantly2. Make sure the front pulley (the one connected to the crankshaft) is tightened to correct specifications. Have you done anything else to the scooter besides the custom clutch? Performance exhaust, aluminium cylinder with bigger transfers and ports etc. and bigger main jet and im not sure but it might have a aftermarket variator. I might have to give that a shot i changed the rollers and contra spring but it got worse. I noticed when i was taking it apart again it had flung some grease onto the clutch bell and on the clutch, i cleaned it as well is i could and sanded the shoes and bell (i've sanded them like 10 times already) its really annoying to try to get it work well so i might just try and buy a better clutch bell and a new contra spring when i get the money. |
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Apr 17, 2019 13:42:44 GMT -5
1. Make sure the CVT belt is free of grease. If it has any grease on it at all, your performance will be impacted significantly2. Make sure the front pulley (the one connected to the crankshaft) is tightened to correct specifications. Have you done anything else to the scooter besides the custom clutch? Performance exhaust, aluminium cylinder with bigger transfers and ports etc. and bigger main jet and im not sure but it might have a aftermarket variator. I might have to give that a shot i changed the rollers and contra spring but it got worse. I noticed when i was taking it apart again it had flung some grease onto the clutch bell and on the clutch, i cleaned it as well is i could and sanded the shoes and bell (i've sanded them like 10 times already) its really annoying to try to get it work well so i might just try and buy a better clutch bell and a new contra spring when i get the money. Any restrictions in your Gianelli Extra Chrome ? How big is your main jet ? |
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Post by rancevas on Apr 17, 2019 14:14:45 GMT -5
Don't sand the clutch bell too much, lol, there will be nothing left of it. Make sure to grease only the parts that DEFINITELY NEED TO BE GREASED UP. I can't stress that enough.
Also, try switching to original jet. If you have a bigger jet installed, but the bore size is the same, your carburetor will literally flood the engine with too much petrol. That's going to reduce it's power. Check the spark plug and the engine for signs of too rich of a mixture.
Those are most likely the only things that make your scooter a frustrating piece of hell.
Quick story - I once with my genius mind thought to grease up the CVT belt, you know, for it to slip better. In my theory it should've made it easier for the belt to go up and down on the pulleys, but oh my god how wrong I was. The scooter wouldn't even move an inch at full throttle. So, I had to disassemble the whole variator assembly in order just to get rid of all that nasty grease. Yeah. Been there, done that.
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Post by insanesmc on Apr 18, 2019 3:47:43 GMT -5
Don't sand the clutch bell too much, lol, there will be nothing left of it. Make sure to grease only the parts that DEFINITELY NEED TO BE GREASED UP. I can't stress that enough. Also, try switching to original jet. If you have a bigger jet installed, but the bore size is the same, your carburetor will literally flood the engine with too much petrol. That's going to reduce it's power. Check the spark plug and the engine for signs of too rich of a mixture. Those are most likely the only things that make your scooter a frustrating piece of hell. Quick story - I once with my genius mind thought to grease up the CVT belt, you know, for it to slip better. In my theory it should've made it easier for the belt to go up and down on the pulleys, but oh my god how wrong I was. The scooter wouldn't even move an inch at full throttle. So, I had to disassemble the whole variator assembly in order just to get rid of all that nasty grease. Yeah. Been there, done that.I only greased the rear pulley assembly but i guess i but little bit too much and it flung everywhere. The 80 main jet i have might be little bit too small because my plug is on the lighter side of brown, and the gianelli exhaust is unrestricted. ill have to try and clean the belt and probably change my rollers back to 7.5g. |
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