Has anyone tried EPI weights in there machine ? If so what happened good or bad faster or slower?

 

I forget whom it was. NovaKaw650 I think.

Whomever it was, they tried some and they actually dropped the rpm's and lost top end. Our guess is the ramp angle is too fast causing the clutch to upshift to fast (losing power in the process).

We are in the process of fabbing our own adjustable weights.

However, it would be nice if someone would come out with some adjustable ones like the Thunder Product's ones. You can use them, but you have to do some fit grinding on the end.

 

DWB,
Since you are making your own weights you might want to try a material called Boron it is strong and durable plus you can instill a hardness of 53 Rockwell. It is a metal used in manufacturing of Cat blades, Grader blades and so on, it is made so it can be machined then heat treated to maintain hardness but allowing for durability. This is what I have made my weights out of and work very well.

 

The total mass ,as well as the distribution of Could be changed on our new Dalton weights by the use of Yamaha snowmobile fylyweight rivets. The Yamaha rivets are available in many gram increments. The base weight is 58g,with mass positioned to load the engine harder on initial shift out,but maintain top rpm like the stock 54g in a v-force. They are available as a set of four,or in kit form for the V including our blue spring. The kit can be set up for piped or stock v. If extensive engine mods are done at some point,you should be able to tune to your application with the addition of rivets if necessary to get the power to the ground.

 

Thanks for the tip Alltoys.

Actually, it is WAM that is having some made. If the design works well then I may go for some. Otherwise, I may look into some myself. I have family in the machinist trade, but they live some distance away from me.

I like the idea of a broad range of adjustability. Maybe around 50-70 grams with the ability to move the mass toward or away from the tip. That way one can change tires to adapt to riding situations and dial in the clutch easier.