RE: Venturi for 061 Wasp
I was very careful with the break in. I started with fuel blended for Fox engines (5% Nitro and 29% all Castor) for the first 30 minutes.
I am now using 10% Nitro and 22% all Castor. The engine is still not broken in as the rpm keeps increasing on each run. I'm sure I will hit 17,000. My plan is to slowly enlarge the ventury and increase the Nitro to see how much I can get out of her without needing pressure.
Orv.