Anyone know how to convert the fwhp into rwhp? my zed came out at 361.7bhp fwhp

There is'nt really a conversion. Dyno's meaure Wheel horsepower. Flywheel figures are just an estimate, and how that estimate was produced varies between dynos and Dyno operators.

 

If you want a very rough guess at what your rwhp was based on the flywheel estimate they gave you then, using a 15% loss that some people like to use, then your looking at 307 rwhp.

 

You should of been given the Rear Wheel horsepower figure. I dont think I have ever seen a dyno printout that shows Fwhp but not wheelhp.

Edited August 31, 200916 yr by Yowser

Ok thanks, well the only printout I got was the three that I uploaded on the dyno results thread

Ok thanks, well the only printout I got was the three that I uploaded on the dyno results thread

 

You should contact them, and see if they give you the Rear wheel figure. They tend to save result records on the PC.

I am sure Dave the FWHP is calculated on the dyno on the rundown resistance.

I am sure Dave the FWHP is calculated on the dyno on the rundown resistance.

 

yes, some dyno's do that, but that does not calculate total losses. The losses under load are much greater than under coasting.

 

What they do is then add to that an estimated percentage figure to come up with the the total loss.

 

Flywheel HP on a Road Dyno is always an Estimate. The only way to get a Flywheel Hp figure is to put it on an Engine Dyno.