"and how many cylinders does your lawnmower have" and "is that an even or odd number????".
That's a great one, Tom! My little single cylinder 2 stroke 20% nitromethane burnin' beast of an RC monstertruck was revving at nearly 30000RPM without blowing apart! Unlike many full size vehicles on the icy/snowy roads today, the truck did very well and had little difficulty going in the direction I steered it.
Kevin in Hillsboro, OR1983 300SD 265K miles, Ursula