RE: Top Flite B-25 ARF (Tecnical, tips, suggestions)
I guess I don't understand why modelers think four strokes sound more realistic.
The Wright R-2600 Twin Cyclone used in the B-25 turned at 2600 RPM, which works out to 9100 exhaust pulses per minute per engine half, a half being one row of 7.
A two stroke turning 10,000 rpm or so comes a lot closer to that than any four stroke.