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Post by coreykoepsel on Sept 23, 2009 4:05:21 GMT 1
just wondering why the cub has a gear box?and can you use the stock cub motor for a direct drive ,just turn it around ?
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Post by flydiver on Sept 23, 2009 5:34:40 GMT 1
Gearing allows you to turn a larger prop for more thrust. The stock 480 is used as a direct drive in planes like the Stryker. It is limited to a 6x4 prop, has poor thrust but MUCH higher speed once it gets going. Getting going is a tad anxiety making at first. You really have to give it a good throw at full throttle. Gearboxes are used with high RPM motors to get them usable for slower planes. Once you get much over 3000KV (RPM/volt) you pretty much have to use a gearbox. For the majority of sport flying 2000kv is a more normal limit. This test will give you more info: Experiments With Speed 400 + Gearing www.wattflyer.com/forums/showthread.php?t=49977 |
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Post by Dillzio on Sept 23, 2009 5:53:36 GMT 1
Yeah, with direct drive it will spin way faster, but you'll have much less torque, so you'll need a smaller prop. If you tried spinning the stock prop direct drive you'd burn the motor out.
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Post by killioughtta on Sept 23, 2009 6:04:26 GMT 1
You would also have to reverse the cable connections to the Rx in order to reverse the spin on the motor. I am trying this on a new application.
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Post by coreykoepsel on Sept 23, 2009 16:36:18 GMT 1
thx.today i broke the prop shaft,what i can i make one out of ??
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Post by flydiver on Sept 23, 2009 17:31:55 GMT 1
?? They are a couple bucks. Replace.
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