RE: Numbers for ST G21/35 DDD head
I will use my Fox .74 conversion as an example, it turns a 12x8 Graupner at 11,000 rpm on 5% glow fuel with 20% castor, on Davis Diesel ABC mix it turns a 12x8 3 blade Graupner at 9,500. As a Diesel it flies a GoldBerg 60 at half throttle as well as the glow does at full throttle. That's no BS and it works for me. My SuperTigre .51 turns a 12x6 two blade at 10,500 on 5% glow and a 12x6 three at 10,400 as a Diesel. I have lots of hours on the SuperTigre .51 as a Diesel. Many on a USAircore KnightHawk and a few on a Kombat Copter. It will probably be on a USAircore Colt 40 by summer.