Brison 2.4 - RCCanada - Canada Radio Controlled Hobby Forum
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Large Engines Discuss Engines Used on Giant Scale Aircraft. Gas/Glow, as long as they're big!

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Old 04-23-2004, 04:18 PM   #1
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Brison 2.4

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What prop should i be swinging on this engine? and what rpm should I get, i have a 20-8 master airscrew on it and it seems to be screaming, just wondering if it is under propped.
There is no such thing as too low
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Old 04-23-2004, 07:08 PM   #2
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20-8 is the middle of the road prop, you can go to a 20-10 to slow it up somewhat.
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1/2A to giant scale, IMAC, SAM, R/C sport, turbine jets, Heli's...
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Old 04-23-2004, 07:41 PM   #3
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Yes a 20x10 depending on which brand and design may be closer to ideal.Dont try to tune by ear.Buy a good tach or borrow one and find out what RPM it is actually doing.
I suppose I could get an argument on this but I like to prop for the 7000 rpm vicinity.
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