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09-09-2019, 05:49 AM
Replies: 14
Views: 914
Posted By aspeed

It is probably richer inverted if the tank is...

It is probably richer inverted if the tank is lower. I wouldn't go any farther with the muffler hole or carb size. Try a bunch of props. Usually square dia/pitch is max. 8-8, 9-9, 10-10. but the...
09-08-2019, 11:53 AM
Replies: 14
Views: 914
Posted By aspeed

You should always get a before and after rpm...

You should always get a before and after rpm check. You will get a bit less tank pressure, but if it still runs well in the air, then you can open the carb a bit too. That is until it doesn't work...
09-07-2019, 07:04 AM
Replies: 14
Views: 914
Posted By aspeed

If you are using the OS muffler you can open up...

If you are using the OS muffler you can open up the outlet a couple drill sizes as long as you can keep the needle setting. Or pitch the muffler completely if the field rules allow it. Open up the...
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