Author Topic: Spring in between clutch ?  (Read 3310 times)

yogi

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Spring in between clutch ?
« on: June 04, 2010, 08:49:15 PM »
y0 guys, on occasion when I ride the super 9 (ac) i'm getting the slight screech from the drive belt.

Does this sound like the spring is getting weak ? and is it called a Contra spring ?

Scoot has done 35,000 km's ?

Only problem I get when this happens is lack of acceleration from take off.

wordslinger

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Re: Spring in between clutch ?
« Reply #1 on: June 04, 2010, 08:53:40 PM »
..have you looked at the cvt, belt etc?

how old is the belt, as my OEM belt broke at 30,000km...

..every mod (action) necessitates a (reaction) mod..

yogi

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Re: Spring in between clutch ?
« Reply #2 on: June 04, 2010, 08:55:40 PM »
..have you looked at the cvt, belt etc?

how old is the belt, as my OEM belt broke at 30,000km...


Yeah man changed the belt only about 1500 km's ago as it was never replace by the previous owner, had a new variator and rollers at the same time.

wordslinger

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Re: Spring in between clutch ?
« Reply #3 on: June 04, 2010, 09:02:26 PM »
..it could be that the spring is weak, they will weaken over time due to heat and the forces at play...

..some refer to it as a contra, some a torque drive spring..

..also, are you sure you installed the correct size belt..

..i've found there are several different size belts that are stated, in various different places, for my A50..

..view my "95 mm variator" thread in the A50 board for examples..

..you should probably replace the OEM spring with the next stiffer size anyway, as it will give your scoot better overall performance..
..every mod (action) necessitates a (reaction) mod..

yogi

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Re: Spring in between clutch ?
« Reply #4 on: June 04, 2010, 09:08:24 PM »

..some refer to it as a contra, some a torque drive spring..

..also, are you sure you installed the correct size belt..

..i've found there are several different size belts that are stated, in various different places, for my A50..

..view my "95 mm variator" thread in the A50 board for examples..

..you should probably replace the OEM spring with the next stiffer size anyway, as it will give your scoot better overall performance..
I ordered the belt from a kymco dealer over here in the UK .....presume it's ok but will remove the cover and have a look.

So can you order the next stiffness spring from Kymco etc ? or aftermarket ? if so are there any inparticular ?

wordslinger

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Re: Spring in between clutch ?
« Reply #5 on: June 04, 2010, 09:13:26 PM »
..if you ordered it from kymco, then it's probably the right one...speculating, but it probably is...

..i would definately go with an aftermarket..such as malossi, polini, NCY...

..and though i'm not sure of the OEM of the S9ac, a 1000 spring would breath new life into you S9...

..if you do many mods, a 1500 might even work better, but since yours is air cooled, i'd put my money on the 1000...

..every mod (action) necessitates a (reaction) mod..

yogi

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Re: Spring in between clutch ?
« Reply #6 on: June 04, 2010, 09:20:52 PM »
So i'll order a 1000 spring am I right in thinking a GY6 spring will fit it ?

Cheers for the advice  ;)

wordslinger

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Re: Spring in between clutch ?
« Reply #7 on: June 04, 2010, 09:24:17 PM »
..again, i'm not sure of the diameter of the S9 spring, and it's the diameter that will throw ppl off..

..I ordered a 1500 for my A50 (gy6, sorta), and the diameter was too small..

..a little googling will direct you to the right one tho..

..glad to help out any way i can!!

..i've learned everything i know about my scoot from this forum..


peace
..every mod (action) necessitates a (reaction) mod..

yogi

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Re: Spring in between clutch ?
« Reply #8 on: June 04, 2010, 09:25:48 PM »
Best Kymco forum full .  :)

Will let you know how it goes .

wordslinger

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Re: Spring in between clutch ?
« Reply #9 on: June 04, 2010, 09:26:48 PM »
..definately do...

..we always like to hear success stories...

 ;D
..every mod (action) necessitates a (reaction) mod..

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