I'm measuring at 2" from the hub which is the only station on my F1D.biz gauge that fits this little prop. I haven't checked the pitch distribution. I found before that the pitch distribution can be varied by bending the prop blades. I think it would also be very simple to make a correct prop block for the prop and heat form the blade to whatever pitch distribution you have in mind. Note that I haven't tried this!!
----- Original Message -----
From: dgbj_at_aol.com
To: Indoor_Construction_at_yahoogroups.com
Sent: Sunday, January 21, 2007 4:04 PM
Subject: Re: [Indoor_Construction] Propeller Pitch?
I have three Ikara props, 6", 9.5" and 12". All are can formed, i.e., the
blade lies on a cylinder. That means they are not constant pitch. The blade
angle varies linearly along the radius. On the 9.5" prop, P/D goes from 5.20
at 0.10 radius to 1.46 at 0.95 radius.
Some measure pitch at 0.50 radius, some at 0.67, some at 0.70 and some at
0.75 (and some everywhere).
Bill, at what % radius are you measuring pitch?
The Ikara props could be trimmed along a Piednoir curve to get true helical
pitch.
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Received on Sun Jan 21 2007 - 13:26:19 CET
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