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Post by ricardoguitars on Dec 22, 2014 20:31:49 GMT -5
Out of the blue I lost power at take off, only when I manage to rev it a little I gain power again, I believe the clutch its not engaging correctly, the clutch shoes don't look flat  |
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Post by geh3333 on Dec 22, 2014 21:16:13 GMT -5
Out of the blue I lost power at take off, only when I manage to rev it a little I gain power again, I believe the clutch its not engaging correctly, the clutch shoes don't look flat When u say loss of power , do you mean your rpms are low or are the rpms rising but your not taking off like you normally do ? Normally if ur clutch is not engaging your rpms will rise. However if your clutch is engaging to soon you will have a slight loss in takeoff power. |
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Post by lain on Dec 22, 2014 21:17:11 GMT -5
What can you tell us about the engine? The rest of the cvt? Anything been replaced with higher quality parts or all stock? Pictures or videos?
I used to have issues with takeoff with my 50cc engine, it would take forever to get moving on a hill sometimes I would even tip over! We have very steep hills in Boston. I upgraded the springs in the clutch to high torque 1.5k rpm, my old ones were worn out and did not engage fully until much higher rpms, and would often just slip and grind the pads down on hills until I upgraded. I also upgraded the variator to a performance variator and switched to 5g pulley slider weights, that seemed to help a lot with takeoffs and even top speeds.
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Post by geh3333 on Dec 22, 2014 21:25:19 GMT -5
As lain said , it could be the clutch slipping . if that's the case you can lightly sand the pads and the inner clutch bell . they will sometimes become glazed which will cause this problem.
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Post by alleyoop on Dec 22, 2014 21:38:16 GMT -5
If the clutch springs are worn which would mean soft the clutch pads would be thrown out at much LOWER RPMS NOT HIGHER RPMS. Putting in stronger springs require higher rpms to get the clutch pads thrown out and grab the bell to turn your wheel.
Alleyoop
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Post by geh3333 on Dec 22, 2014 21:44:22 GMT -5
If the clutch springs are worn which would mean soft the clutch pads would be thrown out at much LOWER RPMS NOT HIGHER RPMS. Putting in stronger springs require higher rpms to get the clutch pads thrown out and grab the bell to turn your wheel. Alleyoop That is correct weak springs will cause the cutch to engage to soon and you will lose takeoff power . I did mention the clutch engaging to soon but I should have stated why . |
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Post by alleyoop on Dec 22, 2014 22:02:41 GMT -5
If the clutch springs are worn which would mean soft the clutch pads would be thrown out at much LOWER RPMS NOT HIGHER RPMS. Putting in stronger springs require higher rpms to get the clutch pads thrown out and grab the bell to turn your wheel. Alleyoop That is correct weak springs will cause the cutch to engage to soon and you will lose takeoff power . I did mention the clutch engaging to soon but I should have stated why . I was correcting Lain he said the opposite of how things work. |
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Post by lain on Dec 22, 2014 22:11:20 GMT -5
That is correct weak springs will cause the cutch to engage to soon and you will lose takeoff power . I did mention the clutch engaging to soon but I should have stated why . I was correcting Lain he said the opposite of how things work. Yeah, that is true that is how it works, however that was not the case for me when I had the 50cc. It would often just slip on the bell until there was enough rpms to keep the pads in place. It was like the pads were glazed, and I am pretty sure they were but I could not find the cause and sanding the pads only helped for a day at a time. The old spring I had when I removed it was very very weak, I was able to open and close the clutch very easily when I had it in my hands. The torque spring was weak but the pad springs were not, they were still good but I replaced them when I replaced the torque spring anyways because I got a deal on a set and wanted to make sure everything matched up. |
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Post by geh3333 on Dec 22, 2014 22:44:24 GMT -5
That is correct weak springs will cause the cutch to engage to soon and you will lose takeoff power . I did mention the clutch engaging to soon but I should have stated why . I was correcting Lain he said the opposite of how things work. When I posted about the clutch engaging to soon I didn't explain why that would be happening. I know you weren't correcting me ,I just thought I should have explained it . sorry bud |
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Post by ricardoguitars on Dec 23, 2014 9:53:56 GMT -5
Out of the blue I lost power at take off, only when I manage to rev it a little I gain power again, I believe the clutch its not engaging correctly, the clutch shoes don't look flat When u say loss of power , do you mean your rpms are low or are the rpms rising but your not taking off like you normally do ? Normally if ur clutch is not engaging your rpms will rise. However if your clutch is engaging to soon you will have a slight loss in takeoff power. RPMs are not rising no matter how much I open the throttle, it takes too long to get speed. |
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Post by ricardoguitars on Dec 23, 2014 9:56:33 GMT -5
What can you tell us about the engine? The rest of the cvt? Anything been replaced with higher quality parts or all stock? Pictures or videos? I used to have issues with takeoff with my 50cc engine, it would take forever to get moving on a hill sometimes I would even tip over! We have very steep hills in Boston. I upgraded the springs in the clutch to high torque 1.5k rpm, my old ones were worn out and did not engage fully until much higher rpms, and would often just slip and grind the pads down on hills until I upgraded. I also upgraded the variator to a performance variator and switched to 5g pulley slider weights, that seemed to help a lot with takeoffs and even top speeds. That sounds like my problem, the engine is not stock, I put 12g sliders on it a month or so ago, it was running fine until now, in fact, it was running like a rocket! |
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Post by geh3333 on Dec 23, 2014 13:23:29 GMT -5
When u say loss of power , do you mean your rpms are low or are the rpms rising but your not taking off like you normally do ? Normally if ur clutch is not engaging your rpms will rise. However if your clutch is engaging to soon you will have a slight loss in takeoff power. RPMs are not rising no matter how much I open the throttle, it takes too long to get speed. Do u use roller weights or sliders ? It sounds as if your variator may not be opening all the way causing the belt to start up higher on the face . if u use sliders , one or more may have got knocked out of place . if it were the clutch not closing fully I would expect u to have some belt slippage. If u could take a pic of your CVT we should be able to tell if the belt it to high in the variator . |
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Post by ricardoguitars on Dec 23, 2014 19:58:54 GMT -5
RPMs are not rising no matter how much I open the throttle, it takes too long to get speed. Do u use roller weights or sliders ? It sounds as if your variator may not be opening all the way causing the belt to start up higher on the face . if u use sliders , one or more may have got knocked out of place . if it were the clutch not closing fully I would expect u to have some belt slippage. If u could take a pic of your CVT we should be able to tell if the belt it to high in the variator . It was the variator causing troubles, the dented hole was worn, I took it to the shop and they put a new one. Back on the road again  |
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Post by geh3333 on Dec 24, 2014 0:56:53 GMT -5
Do u use roller weights or sliders ? It sounds as if your variator may not be opening all the way causing the belt to start up higher on the face . if u use sliders , one or more may have got knocked out of place . if it were the clutch not closing fully I would expect u to have some belt slippage. If u could take a pic of your CVT we should be able to tell if the belt it to high in the variator . It was the variator causing troubles, the dented hole was worn, I took it to the shop and they put a new one. Back on the road again No problem , i thought it may have been a variator issue, im glad u got it fixed. |
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..BAD TO THE BONE..