Need a 30 series reverse spring (yellow)

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supermanotorious

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But having a tough time finding onlines. Remember THIS thread? Well I have another machine to build with the engine turned around so I think I need a reverse spring. Seems like only 40 series are available on the web, am I mistaken?
 

bob58o

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30 Series Driven Yellow spring is not reverse wound.
It is stiffer, but wound in the same direction.
http://www.bmikarts.com/Comet-Yello...MI-_Ci2KzT2QIVix-GCh0Z3w0mEAQYASABEgI11fD_BwE

---------- Post added at 01:02 PM ---------- Previous post was at 12:59 PM ----------

I don’t think you can flip the Pulley on a 30.
With the asymmetrical belt and all.... not sure what the reverse spring would do??? Probably make it non-functional???
 

supermanotorious

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yeah that's kind of the summary of the issues I'm running in to, so I'm kind of wondering if the spring direction even matters on a 30 series, you have "inboard" versus "outboard" springs right? and I would think with all the variations of karts out there you would easily find a reverse spring if it was necessary so maybe it's not
 

bob58o

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Since the belts are not the same on both sides, you cannot flip the direction of the driven pulley on the 30 series, so there is no need for a reverse wound spring.
 

itsid

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the spring direction matters;
as does outboard mounting of the series 30..
both is not optional I'm afraid

(you could install a reverse wound spring from a series 20 rather easily (since it's essentially the same as a series 30 just symmetrical)
but you'd still ruin your belts if you mount it inboard :(
(not to mention you'd loose about about as much power as you would greasing your belt ;))
Soo
if you serously need an inboard mounted "series 30"'esque TC..
then a series 20 will be your only option (well apart from the maxtorque TC which is roughly identical to the series 20)

'sid
 

supermanotorious

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fair enough, so this may be a basic question but what makes a 30 series different from a 20? can I use the same drive unit and mounting plate that came with the 30 and simply swap out the driven unit with a 20 series?

eh- nevermind, symmetric vs asymmetric, not sure what to do, if I mounted the engine in an outboard position I'd need to build a custom exhaust manifold to direct the exhaust toward the rear of the winch, I'd also need a new muffler and possibly a bulkhead fitting and if I could avoid that by using a 20 series I'd be much happier
 

landuse

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I know that the 20 series has a symmetrical belt and the 30 series is asymmetric

From the comet site:

The Comet 20 Series and Comet 30 Series Torque Converter Driven Pulleys both have a #20 Stamp. This Stamp does not determine the series type, ignore it completely. It's the degree of the angle of the component. Asymmetric Systems have all the working parts on the same side. Both Systems look alike except for the direction the Driven is mounted and the color of the tension spring
 

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