. . . The engine is a O.S. MaxIII .35 I purchased 43 years ago in Thailand when I was in the service. I ran it today to test out the new tank and it ran great. . . .
Yes, Andy, that Max III was a real runner. Prior the the Johnson Combat Special in the early 60s, a lot of us felt that a Max turning a 9 x 8 cut down to ~8 x 8 on crankcase pressure, with the biggest venturi money could buy, was top o' the heap in combat. Early on, the oil channel wasn't machined into the crankshaft journal, and we had to hand file our own with "jeweler's files". They ran fairly wet-nosed, as you can imagine. However, they were totally un-finicky, and would run a full tank at max rpm without a trace of fade -- The cutoff was like you put a wooden stake through its heart. I'm pretty sure we ran less than 20% nitro most of the time. You never limped around vulnerable with the Max!
When the Johnson CS first came out, I'd say the well developed Max's we were running at the time were about equal. Well, not for long, tho.
Have fun with that
Sneeker!
Larry Fulwider