dusty

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.

Rabbitcreekok

Not meaning to be a smart alec, but fly it with 10% throttle, if that makes it fly slower.

ron_van_sommeren

Use prop with less pitch.

Wildflyer

Many indoor planes use drag plates to slow them down.

Even my 4-Site bipe moves pretty fast.

dereckbc

Ditto. In addition if your TX is programmable, you can limit the Throttle or use Expo.

solentlife

exactly ... pitch down .... use throttle curve ..... D/R etc.

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

Nigel

ron_van_sommeren

Current and power drawn are proportional to pitch, and proportional to prop-diameter⁴.
Current drawn is proportional to voltage² and Kv³.


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:

• Explanation by Bruce Abbott:
  looking for a 6S small motor. Ideas? - Page 2 - RCG
• Martyn McKinney, Steve Neu and Bruce Abbott wrote some clever answers in this thread, also addressing input capacitor temperature and why life is easier on a controller at WOT (wide-open-throttle):
  ESC efficiency questions - RCG

pmullen503

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.

solentlife

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

ron_van_sommeren

And contrary to engines, e-motors cannot overrev. Rpm can never get higher than Kv × batteryvoltage.