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Too much power

Old 11-23-2018, 05:13 PM
  #1  
dusty
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Default Too much power

Rage RC vintage stick flies great outdoors, but its way too fast for our gym. I'd prefer to fly it indoors. Need power for take off but only requires about 10% throttle to maintain flight. Receiver is non DSM2. Any ideas on how to slow it down would be appreciated.
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Old 11-23-2018, 05:47 PM
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Rabbitcreekok
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Not meaning to be a smart alec, but fly it with 10% throttle, if that makes it fly slower.
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Old 11-23-2018, 11:22 PM
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ron_van_sommeren
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Use prop with less pitch.
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Old 11-23-2018, 11:55 PM
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Wildflyer
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Many indoor planes use drag plates to slow them down.

Even my 4-Site bipe moves pretty fast.
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Old 11-24-2018, 05:12 AM
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dereckbc
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Originally Posted by ron_van_sommeren View Post
Use prop with less pitch.
Ditto. In addition if your TX is programmable, you can limit the Throttle or use Expo.
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Old 11-24-2018, 10:45 AM
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solentlife
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exactly ... pitch down .... use throttle curve ..... D/R etc.

You can never have enough power ... just need to sort controlling or rationing it !

Nigel
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Old 11-24-2018, 05:11 PM
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ron_van_sommeren
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Originally Posted by ron_van_sommeren View Post
Use prop with less pitch.
Current and power drawn are proportional to pitch, and proportional to prop-diameter⁴.
Current drawn is proportional to voltage≤ and Kv≥.


Originally Posted by dereckbc View Post
... In addition if your TX is programmable, you can limit the Throttle or use Expo.
However, if current at wide open throttle is too high for the controller then reducing throttle to get current below ESC max.current is not a good idea. It is even harder on ESC than to keep overamping at full throttle. Better to prop down a bit to reduce current.
See:
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Old 11-25-2018, 04:24 AM
  #8  
pmullen503
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Originally Posted by dusty View Post
Rage RC vintage stick flies great outdoors, but its way too fast for our gym. I'd prefer to fly it indoors. Need power for take off but only requires about 10% throttle to maintain flight. Receiver is non DSM2. Any ideas on how to slow it down would be appreciated.
I had a similar problem, wanted full power for take off but only needed 10 or 15% for flight. I added a throttle curve that gave me much more stick movement at low levels. 0-75% stick was 0-25% throttle, 75%-100% stick was 25-100% throttle.
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Old 11-25-2018, 07:28 AM
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solentlife
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The use of throttle curves is actually a good thing on most models. I think most of us can relate to the lack of fine sensitivity to throttle in certain range for certain models. Particularly in 3D and aerobatics.

Apply a curve to give greater control in the range for manoeuvres and it becomes really sweet.

Curves are not just for Heli flyers !!

Nigel
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Old 12-11-2018, 08:25 PM
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ron_van_sommeren
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Originally Posted by ron_van_sommeren View Post
Use prop with less pitch.
And contrary to engines, e-motors cannot overrev. Rpm can never get higher than Kv ◊ batteryvoltage.
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