Okay I'll be the first to use this forum. Great Idea!!!.

How does that white nylon as found in cutting boards hold up as a carb spacer?. The engine I'll be putting it on is a Stihl around 50cc. It has a round carb intake. I was going to make a split ring type spacer and use a single small bolt and nut to tighten the split onto the intake, then bolt the carb to it. I was concerned in a year or two that the spacer would become hard and brittle.

I have also noticed (now this will get controversial ) that both my conversion absolutely do not like Zinger props. Same size props were used for comparisons and both the thrust and the rpms. were down when using Zingers ( down an average of 700rpms).
Is this because weedies and chainsaw engines need that flywheel weight, hence a heavier prop?.

Thanks again guy's. Peter