now if only i had away to test horse power,i had opted to test the mach .26 but i had no wasp .26 around in new condition to test with,now as far as these engines go i am pretty sure each has a good area either basher or racer,but next time time i want to test the .30 series engines,i might have to refit the engine jig,well the worst engine i ever tested was the hotbodies truckzilla .46 is ran for less the 2 hours and the thru the connecting rod the best i had ever tested was a os 21 rx or xr something like that last december had one of the coolest temps of the .21 series engines versus the kyosho,picco 21 engines with the highest rmp output for a 21 series,only draw back is when i do these the whole area thinks i am cutting lawns all day