Joe;
If you have the Max-H .40 with just "Max-H" on the side, then you have a great engine for general work. Any of the guys who make venturis can provide you with a properly sized setup that will run great. One thing to note, though - the diameter of the hole that the carb or venturi goes into requires that you use a long bodied NVA. The best that I have found are the
long Super Tiger type sold by Len Neumann. I believe Randy Smith can get these as well.
My fuel of choice is 22% lube (50-50 castor/synthetic), 10% nitro, B-Y&O 11-5 prop. On a scratch built Oriental that I shortened the nose about .375", it trimmed out with almost no nose weight needed. Fuel usage is right at 4 oz for the pattern, so you might want to look at a slightly larger tank to be safe.
The Max-H 40 is a great engine. Good luck with yours.
V/r
Bob
Hello,
Recently, a friend gave me a OS Max-H .40 RC engine. He bought it about 1985. I ran it on my test stand and everything appears fine. Good, strong engine. I didn't tach it but lots of RPM with a 11/4 prop.
Anyone have an opinion on how this engine might be for CL use? I thought about making a venturi for it to replace the carb. The carb base O.D. measures .510 which is quite a bit larger than the LA carb/venturi. Would .283 (LA .40 venturi I.D.) for the I.D. of the venturi work? Maybe just lock the carb full open?
Any advice appreciated.
Thanks,
Joe