Would a Cox TD with medallion venturi work the same? I think the medallion has the smaller transfers right? Are you using the 1702 or the low compression head?
Thanks,
MM
Hi MM, Nope! The problem with using a TD is what I said in my prior response;
the TD makes max power in the wrong RPM range for Stunt flying. The TD was a great
engine in it's day for Speed, Combat, and Free Flight; or even for fun sport flying.
Changing the venturi will not change the max torque range at all; it also may not
slow the TD down much either. For example I used the stock TD venturi id for
my 1/2A combat models and for a 1/2A speed ship. My 1/2A Combat models
flew between 71-74 mph, depending on particular props used, and my
1/2A speed ship went over 103 mph with a well fit TD engine. all this was with
good old Cox 30% nitro fuel. Again best of luck;
Tony