3 - blade prop sizes - RCCanada - Canada Radio Controlled Hobby Forum
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Old 02-01-2011, 02:33 PM   #1
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3 - blade prop sizes

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Someone has probably asked this before but if you want to go to a three bladed prop from a two how do you know what size to go to?

I am looking at going from a 22x8 or 22x10 2-blade to a three blade to help quiet the engine a little bit.

Any help is great guys.
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Old 02-01-2011, 04:44 PM   #2
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Re: 3 - blade prop sizes

Here you go... http://www.zingerpropeller.com/FAQ.htm
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Old 02-01-2011, 05:16 PM   #3
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Re: 3 - blade prop sizes

I dont think Zinger is being general, but specific to their props. For example here is MA's blurb;

From Master Airscrew:

To convert from 2 blades to 3 blades you want to decrease the total blade area and
increase the angle of attack (or pitch) to overcome the increased drag of the third blade.
The general rule is to DECREASE propeller diameter by 1-2, and INCREASE by 1-2
the propeller pitch. It is all right to keep the same pitch when going from 2 blade to 3,
however you will not want to decrease pitch.

Do not be divided from the truth by what you would like to Believe!
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