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My home made carbon scale blade

Old 04-26-2004, 10:17 AM
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Default My home made carbon scale blade

I've posted the pics leading to the production of this blade on the warbird form. The finish is not pretty yet, but very strong. i will test run a 3 blade geared down set up beyond the nornal loads this blade will encounter. saftey first.
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Old 05-02-2004, 09:33 AM
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Default RE: My home made carbon scale blade

Looking good!

I would go ahead and bodywork it, use some glaze and sand it with 80, 150 then 220. Then find someone with a buffing wheel and polish it. Then lay up a new mold off of your polished blade, then every one will look perfect.
Old 05-02-2004, 08:54 PM
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Default RE: My home made carbon scale blade

Hi Darrin

Thanks for the pointer. However I have layed two up in a hurry for a test on the performance of the "airfoil" this blade has. It is to be a three blade scale set up for a Bf 109F/G version.

First test will be on a OS 108 as a two blade set up to compare with a 15X8 that is on he 108 now. Then to gear down and move on to the 3 blade. Or get a RCV 120.

I assure you that my final flying blade for my model will be clean and pretty.

The blade is layed up with composite I had. .glass .75, 3.85 and carbon two. Hollow as a fuse would be. Weight aprox 1.2oz. and far stronger and stiffer than any of the wood or fiber/plastic props I have on hand.

I will run them in a few days. Will post pics of the mounting set up ,


Thanks again
Steve
Old 05-06-2004, 09:38 PM
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Default RE: My home made carbon scale blade pics

Well I tested a two blade set up today. It worked better than i expected. Each blade weights about 1.3 oz. 22" arc on the blades.

Now onto the 3 blade configuration
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Old 05-09-2004, 08:41 PM
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Default RE: My home made carbon scale blade pics

Darrin

A layup of a trial for the standard layup. A unidirectional carbon with glass strands cross weave. 4.7oz (shown right) Backed with bidirectional carbon 5.7 oz. Far stronger than the first two. 1.5 oz. Looks better too.

steve
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