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Old 10-29-2016 | 02:00 PM
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Pelle Gris
 
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From: Billund, DENMARK
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I ran a Fiala 30x16x2 on my King 140RV twin. This spun at about 5300 rpm and provided lots of speed even for a draggy towplane with an 18% airfoil.
Guessing that your 170 makes quite a bit more power, I would be looking at a 32x16x2.

The only manufactures I know of that produce propellers with suitable pitch is Fiala and SEP.
http://www.vrtule-fiala.cz/shop/
http://www.sep-ls.de/
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