I was out of the hobby when the SF series of OS engines was popular. I bought a used one in decent condition a while back, but haven't used it. What is it like? Is it stronger than the FSR it replaced? Is its successor significantly stronger? Just curious.
I know that the SF/RF series of .61 sized engines were intended to lug large props, but I haven't heard anything like this about the .46SF ABN engine, which is what I have. What's the deal? TIA
Ed Cregger