when a bike is dynoed is the hp the give the rwhp. or does it depend on the dyno machine. it may sound like a stupid ? but i am new at all of this so forgive me.[img]i/expressions/face-icon-small-blush.gif[/img]

 

SOne of them dyno a the rear wheels, and others dyno at the crank. Most of the dynos that you will see of the Polaris machines are at the crank. with the exception of the Pred. They attach a special devise in place of the primary clutch. The reason is that it is very hard to get an accurate reading on a rwhp dyno from a CVT machine

 

Right a CVT machine actually is shifting all the time in some form or fashion and adjusts the gear ratio.
On a CVT machine it is common practice to run a machine up to around between 15-20 MPH depending on chain or shaft and then start the pull.
On a manual transmission most quads typically are in a 1 to 1 in 4th gear and this is where you take your reading.
Like BigBad Said most CVTs give a reading but it will surprise most as the rwhp shows a significant change from advertised usually unless it is a manual tranny due to loss in the drivetrain which can be as high as 25% on a belt driven machine. Polaris however seems to be the most efficient in delivery of power from the CVT as the mass of the motor clutch and the driven clutch seem to be similar and therefore create less lag.

Go to Dynojets website they have hours of reading on the subject if you want to dig deeper into it. We run a rear wheel dyno and a lot of things affect a pull so educate yourself before laying down the cash to have your quad done.