Aug, plastic spinners are okay if they use a metal back plate. The problem occurs with plastic back plates in many instances. CB Associates was a brand that used plastic spinner cones with metal back plates. That was the only one with a plastic spinner that I would bother with.

I could get other brands of all plastic construction to work, but each and every time they would sap about 500 rpm off the top end of the engine. I don't pay for premium engines only to lose power using a cheap spinner.

Metal spinners are an excellent investment, as far as I'm concerned.

On models that do not require a spinner, use the AMA safety nut type of crankshaft nut and simply reverse the rubber cone in your starter's cup. That saps 0 rpms from your engine and is very durable. Another excellent investment.


Ed Cregger