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Post by jlrod09 on Apr 18, 2012 21:22:53 GMT -5
the other day i was riding my scooter its a 150cc . when Thi's other guy poped next to me on his 50 cc . he said that he had his scooter "maxed out", then i said how and where . he told me that they put a bushing inside of his clutch (tensions up the belt )  and that they cut one wire off of the cdi and put bigger fuel jets in . . i have bigger jets on my scooter with an iridium plug and a "performance coil" does any one have any tips on how we could do this to our clutches . with out having to spend the 200 dollars he spent at Boston motor sports . personally i think he got ripped. |
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Post by dude on Apr 18, 2012 22:21:03 GMT -5
Did he smoke your 150 ?? RESEARCH---
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Post by skuttadawg on Apr 18, 2012 22:37:07 GMT -5
Only the 50s have a washer limiter in them . A larger jet can deliver more gas . Coil might not make a difference . Lighter roller weights can improve speed
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Post by orphansoul on Apr 18, 2012 22:37:52 GMT -5
They took his rev limit off the cdi, made his fuel mixture rich, and jerry rigged his CVT.
Not exactly what I would call "maxed out".
If you want more out of your transmission, adjust your roller weights and do it the right way. Unless you have a lot of other mods, taking your rev limit off won't accomplish anything positive.
Sounds like a dealership just took this guy for a ride.
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Post by timelancer on Apr 24, 2012 16:33:35 GMT -5
I'm a 50cc tuner and that is far from maxed out. In fact that spacer could cause belts to snap.
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Post by ltdhpp on Apr 24, 2012 19:19:58 GMT -5
This. If you didn't get the opportunity, how did it sound when it took off? did he get ahead of traffic? Sounds like they shimmed up the torque spring making it tighter like the springs you can buy. I wouldn't put anything there that wasn't made to go there, but Ive heard of people doing such. |
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Post by wile on Apr 25, 2012 0:06:12 GMT -5
Any changes to the Clutch pulley spring to tighten it up making it harder to open All that does is was require a lot more rpms to open the clutch pulley, that is all it does. So if you like to hear the motor screaming at you to get to 30mph or better by all means go for it. Also start saving your money for another build or a new motor.
Wile
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Post by skuttadawg on Apr 25, 2012 0:22:53 GMT -5
So 1,000 springs and contra spring not a good idea ? I have seen some 2T 72cc Power Kits that used 2,000 springs but with a new variator and clutch since stock clutch would burn up with them and a BBK
CVT upgrades make sure to have a Gates Powerlink or other high end belt since some come with a wimpy one from the factory .
Unrestricted exhaust will help with larger valve head on a 4T or a ported 2T .
The China stuff is made to ride under normal conditions not racing so they will tear up and not last as long as the Japan or Italian goodies .
Some have had success with a Uni or K&N airfilter after lots of trial and error with rejetting the carb .
The 50 4Ts have a sealed carb so any aftermarket will be better since you can tune it and not be restricted like some are .
Slight mods you should be ok but if you go all out it may not last long and prone to failure when pushed to or beyond its limits
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Post by wile on Apr 25, 2012 1:18:36 GMT -5
It all depends on how you want to ride.
You want jack rabbit starts, change out the Clutch springs for stronger ones that will need high rpms before the clutch pads get thrown out(just like a car Hold the Clutch in Bring up the rpms and pop the clutch).
You want the Clutch pulley to stay longer in low gear and require more rpms to have the belt drop down for higher speeds put in a stronger Contra spring.
Pretty simple stuff provided your motor can turn high rpms, if it cannot turn high rpms put those in and you will have a dog.
Wile
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Post by skuttadawg on Apr 25, 2012 1:56:20 GMT -5
I know most use matching rated springs , but can you mix them up ? For example 1,000 clutch and 1.500 contra ?
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Post by timelancer on Apr 25, 2012 3:25:11 GMT -5
you can mix them up for different effects. the stronger the clutch springs the higher the RPMs need to be to engage to the bell(this can cause a launch control effect, but with every dead stop) increasing the contra makes the variator stay in a "lower gear" longer and allows the cvt to "downshift" faster, however a higher contra also puts more stress on the belt. I recommend changing weights before messing with the springs, as a lighter set of weights can give you the same effect as a stronger contra without the added stress on the belt.
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Post by Pony66 on Apr 25, 2012 7:56:12 GMT -5
the other day i was riding my scooter its a 150cc . when Thi's other guy poped next to me on his 50 cc . he said that he had his scooter "maxed out", then i said how and where . he told me that they put a bushing inside of his clutch (tensions up the belt ) and that they cut one wire off of the cdi and put bigger fuel jets in . . i have bigger jets on my scooter with an iridium plug and a "performance coil" does any one have any tips on how we could do this to our clutches . with out having to spend the 200 dollars he spent at Boston motor sports . personally i think he got ripped. They guy may have been talking about a Torsion Controller in the clutch.  Partsforscooters.com has a roller bearing Torsion Controller. |
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Post by ltdhpp on Apr 25, 2012 16:46:37 GMT -5
I went as high as you can go with that stuff and mine doesn't sound like its winding up like its gonna blow, but I am a larger than average payload.
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Post by timelancer on Apr 26, 2012 4:54:57 GMT -5
hmm.. I recall looking into one of those about a year ago, seemed like a good addition to make your contra spring last longer, but I've never actually used one. Anyone know if it actually helps?
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Post by turbotech on May 10, 2012 23:21:35 GMT -5
drill holes in your clutch face right where the castin marks ON YOUR ACTUAL CLUTCH are 4-5 holes evenly spaced apart not to effect the balance of the clutch this will lighten your clutch adding 2000rpm this mod is free!
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