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Old 02-04-2012, 12:03 PM   #1
Rbwindover
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Default Slow fly prop question

Can anyone explain to me the concept of a slow fly prop, a model I am considering requires one. If a model needs a certain airspeed to fly how does a slow fly prop make any difference. How do they differ from a standard prop? Can i use a standard prop instead? Thanks in advance
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Old 02-04-2012, 01:27 PM   #2
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SF prop is designed to be efficient at slow rpms and slow flying speeds.

Standard prop isn't. It will work but usually not as well.

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Old 02-04-2012, 02:13 PM   #3
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Fat blade, produces torque. Have an upper RPM limit.
GWS SF are pretty floppy, very low RPM limit. Only good for slow low power planes.

fly
If you're going to learn to fly them, you have to learn to fix them.
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Old 02-04-2012, 04:17 PM   #4
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There also a lot lighter. Put a standard (glow) 10x6 on a little wimpy brush less and it might not even be able to turn it.

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Old 02-05-2012, 05:38 AM   #5
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And for that matter, don't use a SF prop on a higher power bird that specifies a standard electric prop. Like flydiver said a SF is very flexible, and on a higher powered system, the prop blades will fold forward as they spin.

When I die, I want to go like my Grandfather did, in his sleep...... Not screaming like the passengers in his plane.
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Old 02-06-2012, 07:21 AM   #6
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That would be a best case scenario

Blade separation and damaged shaft or engine mount would be worst.

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Old 03-11-2012, 03:03 AM   #7
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Slowfly props usually have a rounded tip too. The tip is the most important part of a prop as it is doing the highest speeds and a lot of the work.

Dynam Spitfire, Dynam P-51, Electrafly Camel, scratchbuilt foamboard F-15 and full fuse Spad XIII, paper airplanes, rubber bands, anything I can fly.
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