wooden prop balance?

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wooden prop balance?

Postby G.Dawes » Tue May 27, 2014 9:43 pm

What is the maximum difference of blade weights in grams should be allowable on a manufactured wood prop before it needs to be worked on. I know it should be exact but it is not and it is not damaged in any way. what are the parameters that a commercial prop is made to ??? Paint the tips is very fine weight difference but what if more is needed ?
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Re: wooden prop balance?

Postby tnowak » Wed May 28, 2014 8:43 am

Give Rupert Wasey a call at Hercules propellers.
He is very helpful and has propeller balancing equipment.

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Re: wooden prop balance?

Postby jangiolini » Mon Jun 09, 2014 6:32 pm

It would sound like you have got water into the heavy blade!!! what make is it, is it ground adjustable? how accurate are your scales? I usually balance my props by making a top hat insert to fit the center hole and place a strong cord through it to suspend it. usually just a spray of paint to balance it. if it has become unbalanced then something has changed!!Have you put tape on it or repaired it? sorry just rambling thoughts!
Regards John.
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Re: wooden prop balance?

Postby phil brookman » Fri Nov 14, 2014 8:03 am

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Re: wooden prop balance?

Postby Gerry Holland » Fri Nov 14, 2014 8:26 am

If in doubt on balance of Prop then call Rupert at Hercules Props and arrange for check and overhaul of Prop.
I can recommend as I have sent two Props in his direction, an EVRA and Flottorp. Both came back beautifully finished with Certificate of Conformance if required for LAA Paperwork.
The Flottorp was probably ex-WW2 (1943) and is now attached to an A65 and is a perfect match.
The EVRA is on a Jodel with C90.
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