This is for guys that have extensive dyno tuning on bikes.

Of course two strokes in particular and to be even more specific, the LT500.

I know there are debates all over the internet about dynos and which dyno to use and how its set up for real world comparisons.

I am wanting to know what the HP loss is to the rear wheels going thorough the clutch and the transmission. I know there are different variables like clutch slippage and parasitic loss from drag on the gear sets. But I just want to know what the % of loos is. Does not have to be a specific # like 23.456% more along the lines of 23.5% would be fine.

And besides getting the clutch to be fully engaged under a load is there anything else that can be done to get the % of loss lower? Like dyno testing to see what the different viscosity of gear oil produces the greatest outcome. Does micro-polishing really work, I for one dont think it does anything. Does cryo-treating the gears and shafts do anything?

Some of you think this may be overkill. But for what info is out there or is willing to be shared, it could benefit everyone.

I am more along the lines of just wanting to know the % of HP loss from the crank to the rear tires.

Thanks for anyone that replies to this with an educated answer.

According to Greg at WCR, the pro mod package (back-cut, cryo, micro polish) is good for 3-4 hp from dyno testing he has done on large 400-500 cc 2 stroke engines.

Reduction in friction?