Originally Posted by
the Wasp
1QwkSport2.5r,,
look at the Prop/RPM numbers for that engine on 10% Nitro with a muffler, that's a wow for 1988
Jim
That YS .45 turns 16,400 on a 10x6 using 10% nitro and a standard muffler. That's about 1,000rpm over the average sport .45/.46 of the day using a tuned muffler like the red Jettstream.