FE Guys: 6,000 RPM

[Cobra #3170]

Originally Posted by Rick Parker

Lets talk about Dick Smiths 198 MPH...........

198 MPH = 17424 ft/min
29" tire D. x Pi = 91.1"
91.1 / 12 = 7.59 ft/ rev
17424 / 7.59 = 2296 RPM at the tire
2296 x 3.31 (Rear end ratio) = 7599.7 RPM (engine)

Tire diameter is assumed, could be taller, a 31 " tire = 7120 engine rpm

[gsharapa]

Mine will go 7,200 but made peak HP at 6,800. It was built to take the HP band and tork up higher with solid roller, T&D shaft mounted roller rockers, aluminum flywheel etc. I wanted it to spin faster and knock down some of the tork down low since these cars are so light and mine even a bit lighter with carbon fiber body and all aluminum motor. Keith Craft did a great job with this one....