it is with in 3 grams of his piston. and not to point any fingers but i heard that mrhp piston is not made for the 100mm bore. but his new one will be. and the new cp piston is as strong as the other cp's "nos"

 

No aftermarket pistons are made for the DS. They are adapted from other models or V-8's. To get a piston forging specifically designed for the DS, you have to have it built. Anyone got $20 grand?

The HPR piston is nitrous ready, has a superior ring package, lightweight FSR, gas ported, strong lightweight tool steel wrist pin, and has hundreds of hours of testing in a ds650 motor- it is on it's 5th generation of design improvement. The new piston coming this summer will be a purpose built DS forging with some special features not seen on any DS piston before.
222

 

the cp is gas ported, total seal rings, low friction packing and has years of oval track racing on it. im not saying mrhps pistons are bad just saying there is a new piston in town!

 

[img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img]

 

maybe i need a 14:1 in the raptor[img]i/expressions/face-icon-small-wink.gif[/img]

 

The Raptor runs just fine the way it is[img]i/expressions/face-icon-small-wink.gif[/img]

 

John..... i better listen to you.....we dont need her breaking down again!

 

Shmee,

I agree with you 100%! Like you pointed out, there is nothing wrong with Eric's piston. From my standpoint, I think its great that people have access to more than one solution. It's a healthy thing for the consumer, and the market. Diversity and choice of product helps all consumers in the long run. I for one am glad that J. Ross (TheBOM) has encouraged an already very experienced company like Ron Wood Racing to further develop new products. I know of no company that has more racing experience with the Rotax motor than Ron Wood Racing. The popularity of the Ron Wood 14:1 piston has already encouraged new development of other products in the Ron Wood camp. Although new development of products for the DS was delayed for a year or two, I think you see more new motor products for the DS from Ron Wood Racing in the next 6-8 months. All of these developments couldnt happen without consumers choosing alternatives.

Marky

 

Here is just a little more info to add - I talked with Elliott today regarding the CP pistons they carry. Each of the CP pistons they carry, including the 14:1 piston, are made specifically for the combustion chamber of the DS650 Rotax motor. The result is a more accurate compression rating.

 

now thats the type of stuff i like to hear!!!!!!!!!!!!!!!![img]i/expressions/face-icon-small-happy.gif[/img]