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Prop question...

Old 08-07-2014, 04:43 PM
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Davethebluessinger
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Default Prop question...

OK so I had some bits and bobs lying around that I wanted to use.
Several 2S 500mah Lipos
A couple of 3S 350mah Lipos
Some 9g servos
A 12A ESC
A HXM 20g 2300kv motor.

Seemed ideal for a little foam flying wing so I ordered one of these>>>> http://www.flyingwings.co.uk/index.p...ry&path=61_121

I believe their setup is a 1400kv motor with a 6x5 GWS prop (looks like a slow fly in the picture.)

My question is this….
What prop should I use with the 2300 motor on 3S and 2S setups. (max 6” between the elevons)
I’m not looking for blistering speed just some varied soccer pitch fun!
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Old 08-07-2014, 07:53 PM
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kyleservicetech
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Originally Posted by Davethebluessinger View Post
OK so I had some bits and bobs lying around that I wanted to use.
Several 2S 500mah Lipos
A couple of 3S 350mah Lipos
Some 9g servos
A 12A ESC
A HXM 20g 2300kv motor.

Seemed ideal for a little foam flying wing so I ordered one of these>>>> http://www.flyingwings.co.uk/index.p...ry&path=61_121

I believe their setup is a 1400kv motor with a 6x5 GWS prop (looks like a slow fly in the picture.)

My question is this….
What prop should I use with the 2300 motor on 3S and 2S setups. (max 6” between the elevons)
I’m not looking for blistering speed just some varied soccer pitch fun!
Just a note, when playing around with different prop sizes, what would appear to be a minor change in prop diameter/pitch can make a very big difference in power input to your motor.

Like going from a model that can't fly to burning up your motor. This is where one of those wattmeters is critical to your application.

As for blade diameter and pitch, you'd want a larger blade diameter/lower pitch prop for a slow flyer model, and a smaller diameter/higher pitch prop for a fast flying model.

Generally, a pitch something on the order of 75% of the prop diameter is a good place to start. That would make your 6 inch diameter prop work with a 4 or 5 inch pitch.
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Old 08-07-2014, 08:13 PM
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crxmanpat
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With that motor I'd use a GWS 4.5x3 (they call it a 4530), or a 5X3 (5030). That motor is very similar to what I use on my small pusher jets (I use a 20gr 2500kv motor), and the 4530 is the one I use on a 3S pack.
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Old 08-07-2014, 11:50 PM
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Davethebluessinger
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Thanks guys, I have some 5030 GWS somewhere!
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