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3 speed controls with 4 channel radio

Old 08-13-2007, 06:37 PM
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hansvonpensch
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Default 3 speed controls with 4 channel radio

Is it possible to run 3 seperate escs and one servo for turning with a 4 channel radio, thanks, Randy.
Old 08-13-2007, 06:39 PM
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MajorTomski
 
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Default RE: 3 speed controls with 4 channel radio

How awkward do you want it to be??

yes it is possible
Old 08-13-2007, 06:45 PM
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hansvonpensch
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Default RE: 3 speed controls with 4 channel radio

Thank you Major, I want to run 3 motors in a 48" pt or it just won,t seem right.
Old 08-13-2007, 10:45 PM
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mitchlandry
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Default RE: 3 speed controls with 4 channel radio

Depends on how you want the control.
You can run that setup with a 2 channel radio if you wanted to.
1 channel to 3 ESC's (servo cable splitter) or 1 ESC to 3 motors (better have 1 big ESC) and 1 channel for rudder.
Do you want seperate control of each motor? If so, then the setup gets more complicated.
I will be starting a triple screw towboat soon and currently doing research for my needs. I have not been able to find what i'm looking for but the search is not over yet.
Old 08-14-2007, 06:03 AM
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Default RE: 3 speed controls with 4 channel radio

2 channel and 3 ESCs plus one mixer. With 4 channels that leaves two channels for something useful and fun.
Old 08-14-2007, 08:34 AM
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MajorTomski
 
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Default RE: 3 speed controls with 4 channel radio

The kiss design is as the guys said above. One battery pack and one ESC (electronic speed control) for each motor (one source here http://www.hobby-lobby.com/boatcont.htm). Plug 1 Y connector into the throttle channel of the reciever one ESC lead goes into 1 of the Y connector ends. A second Y connector plugs into the second end of the first Y. The remaining 2 esc's now plug into the ends of this Y connector.

If you're using a four channel radio please make sure it is for RC GROUND frequencies only or it isa 2.4 GHZ unit like a Spectrum.

HTH

T
Old 08-14-2007, 05:57 PM
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LtDoc
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Default RE: 3 speed controls with 4 channel radio

You have several options. One would be to use separate ESCs for the two outer motors, and a simple on/off for the third. Most times that third motor is just for speed, right? The third motor can be turned on/off with a simple servo arrangement. I can't think of a more simple way of doing it. From there, it just depends on how complicated and expensive you want to make it.
- 'Doc
Old 08-15-2007, 04:18 PM
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Default RE: 3 speed controls with 4 channel radio

Or learn how to program a microcontroller and do it your own way!
Here:
http://www.geocities.com/patspt41/
I have 3 ESCs that provide turn in place to either side with rudder and no throttle, as well as single motor cruise foward ramping to all three at WOT (for power conservation at cruise), and single motor only in reverse, limited to 50%... all on 2 channels!

It's worth it, because trying to get that functionality without a little help from electrons is about as fun as an old car with manual spark advance...

PM

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