I Have just installed my new HPD Roller Clutch on the Scrambler 400, but I still don't know what the spring weight means. I have it set to 12lb, as the instructions said use between 10-14. I want low to mid range, rather than more top.

Can anyone tell me what happens when you make the driven clutch spring wieght heaver and lighter?

TheJoka
400Scram 4x4

 

I think that, uh, if you, uh, I mean, hmmmmm. Good question!!

 

Heavier weight will make your clutch shift slower and lighter weight will make it shift faster.

 

Your problem could possibly be fixed by using a different setting with the roller/sheave, thats why a roller clutch offers more tuning options.

A higher tension spring will give you greater backshift and more initial belt pressure on throttle. However, a roller clutch should do that inheirently as it is designed to reduce friction.

I would work on your primary clutch to get your low-end. What set up are you using up front?

 

A heavier weight in the secondary could possibly slow upshift, but w/ the heavier weight, you inherit a much more aggressive backshift.

This is quoted from the HPD catalog which you should have recieved w/ your roller.

When it comes down to it, its all in what you want. The only way you will learn this is to spend time making changes over and over again. Make a change a write it down. AFter you do this a couple of times, then decide which setting you liked best. It takes time, but you'll know it like the back of your hand.

Good luck,

EC

 

I have the lighter weights up front that came with the HPD pipe and clutch kit. I also have the spring that came with it. I think the weights had 25 on them? Can't remember.

TheJoka
400Scram 4x4

 

Slow Up shift? Agressive back shift? What does this mean when you are riding? I want more curry when I hit the gas out ofthe corners, and off the mark. Top speed is not of much interest to me, as I hardly every get to full speed anyway. (103kph on the GPS on Sunday. A new Raptor did 107kph)

TheJoka
400Scram 4x4