|Roger Dyke||04/06/2020 13:19:00|
306 forum posts
Cuban8 and Capt Kremen,
All good stuff this. Thanks for your replies. Contents noted.
|Nigel R||04/06/2020 13:56:37|
3916 forum posts
I have a fair sized pile of old IC props in the 7 to 11 inch range. Most of them are the grey Graupner Super Nylon type. They seem to work perfectly well for my needs.
They were reasonably good back in the day, the wide tip is a bit noisy - less issue on electics - and that seems the main difference to the APC shaped props common now.
|Steve J||04/06/2020 14:00:43|
1907 forum posts
I would also recommend aeronaut props.
|Richard Clark 2||04/06/2020 15:22:38|
|277 forum posts||
I suspect but do not know that most of it is down to the varying efficiency of different brushless motors over their acceptable load, rpm range, number of cells and radiated heat.
This it very important on EDFs but few bother to check it all out on prop planes - if the motor remains 'not too hot' on an extended full power test we tend to leave it at that. We have no way of determining the actual shaft power absorbed by the prop as compared to the input wattage.
Nevertheless I will buy and try a few of the APC electric props when my local model shop reopens.
|Bruce Collinson||04/06/2020 17:46:17|
|535 forum posts|
Agree with Capt. K re hubs on electric APC props, perhaps more so than their IC props. V. interesting re Aeronaut, never tried one. 4Max wooden electric seem good but only on a rather unscientific basis, and they are more fragile than APC.
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