ORIGINAL: ckangaroo70

I got a chance to run and dial in my Ryobi 31 again today swinging an APC 18x6W. I was getting a good 6900-7000 RPM! I thought those were pretty respectable numbers for a stock unmodified 31CC Ryobi single ring with the Zama carb. I am running 89 octane mixed 40:1 with Klotz technoplate oil. It is the same oil I use to make my Nitro fuel and it is 80% synthetic/20% Castor. The Ryobi really seems to like it, but lawnboy ashless or Penzoil 2 stroke oil probably do just as well. The best reliable idle I could get was around 2200 RPM. I was hoping to get down to slightly under 2000, but 2200 probably be ok with a 6 pitch prop. If I was using an 8 pitch it might be hard to get the plane to slow down. Anyhow I just thought I would post my results. Now I just need a good day to take the Rascal out and test it in the air.[8D]

I just aquired another Ryobi weedeater, but this time it had the single ring 28.5cc short shaft Ryobi on it. I am in the process of getting it converted now, and will probably stick it on a Super Sportster 90/120 I am scratch building. This one has the Warlbro Carb instead of the Zama like my 31. Be interesting to see how the two stack up against one another.