ulmer clutch kit??

[zook]

zakstang. I E-Mailed Allen and asked him if I shoud do anything to my clutch after I extended it to 136. He told me to wrap the spring to A-2. It is not that hard, Take it apart and there is a C- clip that holds it on. Take it off and then you can change the setting on the Helix. From A-1 to A-2.

 

[ZAKSTANG]

thx

 

[cannondale27]

Look at both secondary set ups
stock yamaha = an alumunim cam(helix) riding on a plastic puck. Lots of friction!
A good quality roller secondary has a steel rollers riding on a steel helix....way more effecient! Way less friction. Try pushing a flat object up & down a steep ramp. Now put wheels on it & see how much easier it goes up & down.

Thats exactly right and reason I dont think a roller is needed on 4st other than for wear.If it shifts faster will end up with more engine braking.Plus power is held so long in RPM range clutch should easily keep up.My SRX roller clutch was huge improvement but might not be needed on Phazer.

 

[Turk]

You compensate for the quicker upshift with a shallower helix angle. Run less helix angle & less friction shifting = more efficency.

 

[cannondale27]

Okay. I have a old V-max external secondary and would be willing to give my SRX roller a try on it.Its a Aaen setup.I can understand how it would be more efficient but I still dont see how engine braking on deceleration could be less with a roller.That is a major issue in my opinion.Am used to it but would gladly have less not more.I think the pads of stock clutch and thier friction probably decreases engine braking.

 

[rotax454]

Okay. I have a old V-max external secondary and would be willing to give my SRX roller a try on it.Its a Aaen setup.I can understand how it would be more efficient but I still dont see how engine braking on deceleration could be less with a roller.That is a major issue in my opinion.Am used to it but would gladly have less not more.I think the pads of stock clutch and thier friction probably decreases engine braking.

I understand your concern. Properly set-up, the roller clutch could be backshifting either right along or just behind the motor compression. My idea is the roller clutch with the proper set-up could be backshifting WITHOUT adding or aiding the sled deceleration, and getting the clutching backshifted to the lowest ratio for that blast out of the corners. This clutching, like many sleds takes alot of time and testing.

 

[cannondale27]

Yeah definitly not a simple thing.I wish someone would make a programmable helix with some type of a magnetic hydraulic fluid such as some of the shocks have already.Could do exactly as its told then Looking forward to your reports on this.Maybe we can get Ulmer involved also.Might even be able to decrease engine braking.I will talk to Aaen about it for sure.

 

[Srxspec]

Great thread here guys. I just found an old 1995 Vmax secondary as well looking through old parts if anyone is interested. I had a chance to play with that secondary on the Phazer at high elevation and it made tuning alot easier. I did not compare it to the stocker for any performance gains.

 

[xc_phazer137]

Been working on this Ulmer. I need to get on the river with it and compair times. Allen your Clutch Kit is the BOMB.COM.