ORIGINAL: Skyfly0311
I recently purchased a very nice Italian made super tigre G-75. I have read that everybody replaces the carbs with O.S. or something similar as the stock carb is not that great. I was wondering what carb i should use. I have a O.S. 4D carb off an old .46sf and a 55ax carb. I was wondering if these would be a good replacement or would just not work at all. I haven't recieved the engine yet so I have not been able to do any testing.
Thanks,
Joe
Joe, don't believe or take to heart everything that you read in the modeling forums or press. Many writers have zero experience (unless you count a year or year and a half). While these folks may be good at writing, it doesn't necessarily follow that they know anything about model airplanes or their engines.
Any glow two-stroke will be a little cranky and obstinate during its break-in period. Yes, replacing the stock carburetor with an OS carb may make flying an unbroken-in engine a tad easier, but chances are the price of the carb is going to be way up there. If you just bench run the engine through break-in (follow the manufacturer's instructions), you will find that the stock ST carb will handle the throttling chores admirably well.
Ed Cregger