Anyone have any suggestions or input on multi angle helix's. I have a 1998 Formula 500, mostly aggressive trail riding, it is stock now with a 50 deg helix. looking for a little more zip. Is it worth wile or should i save the money foe gas? .

I'm no clutching expert, but generally I think dual plane helixs are used on machines with more power than a 500. when the shift hits the second plane of the helix, it becomes easier for it to upshift, which means it will upshift faster and the motor has to have a decent amount of torque to keep accelerating during that upshift without having RPMs drop. The 500 is what it is, a fun motor, but it's not exactly a torque monster. The symptom of putting a dual plane on a sled that can't pull it, is when you hit the 2nd stage of the helix the motor will actually drop RPMs and you will loose power. Lots of times it's good to use a dual plane when your clutching is good out of the hole, but it over-revs at higher speeds. Dual plane helix can compensate for that. (ramps and springs can too, but IMHO helix angles are the most 'predictable'.) Without doing some other mods too (ramps, springs, weights) I'm not sure how much you would get just by slapping a dual plane in there.

I'm no clutching expert, but generally I think dual plane helixs are used on machines with more power than a 500. when the shift hits the second plane of the helix, it becomes easier for it to upshift, which means it will upshift faster and the motor has to have a decent amount of torque to keep accelerating during that upshift without having RPMs drop. The 500 is what it is, a fun motor, but it's not exactly a torque monster. The symptom of putting a dual plane on a sled that can't pull it, is when you hit the 2nd stage of the helix the motor will actually drop RPMs and you will loose power. Lots of times it's good to use a dual plane when your clutching is good out of the hole, but it over-revs at higher speeds. Dual plane helix can compensate for that. (ramps and springs can too, but IMHO helix angles are the most 'predictable'.) Without doing some other mods too (ramps, springs, weights) I'm not sure how much you would get just by slapping a dual plane in there.
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Thanks for the info

I used a clutch kit from erlandsons performance and it made a huge differance It workes very well real snappy with a great back shift I liked so much that I put one into my xcr600, these kits are a complete package that give you every thing you need and are dyno tested.
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