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Old Jan 08, 2012, 03:09 PM
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Klassische Segelflugzeuge
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Northern Vermont
Joined Jul 2010
1,450 Posts
Fitted the Art-Tech ASK-21 spinner and propeller

I lopped off close to about 5mm of the fuselage nose foam and that's it. Bolted right on.

Several advantages
1. This is a replacement propeller and spinner that looks correct
2. The propeller blades actually fit against the fuselage cleaner and are more tucked in - more aerodynamic for gliding.
3. By dropping to a 9.5 propeller size the motor should be able to gain some RPMs.

ST Model ASW-28 propeller
10 x 6

Art-Tech ASK-21 propeller
9.5 x 6

I don't have a watt meter, but I did run the motor at WOT for at least a minute on the bench and seemed fine. Battery was cold, ESC was barely warm if at all.

Q. Does anyone think I'll need to upgrade the original ESC because I've dropped down to a 9.5 x 6?
I'm running a Zippy 1300mAh, 20C and stock motor, stock ESC. I have a spare Mystery 30A just in case.

I'll try to get it up in the air and test.

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