RE: Supertigre .40 Bull Ring worth keeping?
The only thing that I have against it is its displacement. Why carry around the weight of that block when a larger bored version produces more power and weighs less? I don't fly in any competition classes that require a .40 these days. All of my medium sized engines are .45 and larger, up to a .58 (Enya .61).
I'm lying. I did pick up an Enya .40 CX a while back. It was ultra inexpensive and I needed the muffler for a larger CX.
Ed Cregger