Since the Norvel .049 is no longer available except at "the Bay" rates, what make/model of .049 is more or less equivalent? Context is that the BMJR 1/2A TEOSAWKI was designed around the beam-mounted Norvel .049.
TIA,
Jim Howell
Hi Jim, the Norvel .049 engine is a completely pathetic "Stunt Engine". Everything about it is engineered
for high revs and lousy fuel draw unless fuel delivery is pressurized. The 1/2A TEOSAWKI is the average
size of the early generation Cox TD .049 powered Combat models. Most were in the 190-200 sq" wing area
range. For the 1/2A Teosawki model, a far better glow engine choice would be a Cox .049 Medallion.
Barry Baxter's 1/2A Stuka design, which was a terrific stunt model, weighed the same as the 1/2A T***,
was powered by a Cox Medallion, and had a 225 sq" wing.
An even better true 1/2A stunt engine(.049cu") is the Paw .049 sbr diesel engine that can pull a larger prop;
and fly a 230-250sq" model. Barry Baxter's 'Half Arrow" model has 250sq"s area and is powered by
a Paw .049 tbr diesel.
The bottom line is that both the Cox Medallion and the Paw .049 diesels make their usable power at a lower,
yet wider RPM range. The engine choice is yours.
Tony G