Model Boat Mayhem

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Author Topic: Limiting power to the motor?  (Read 1455 times)

red110kev

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Limiting power to the motor?
« on: May 22, 2017, 09:42:48 am »

I have an old Club 500 boat that I am using to let kids from the public have a go at model boating when we have events on at my local pond.

It has a stock 550 motor, 7.2V Nimh battery, 15 amp Mtronix Viper marine ESC and fuse protection. Radio is an old 2 channel 27MHz AM system.

Currently I am limiting the throttle movement on the TX to reduce speed by about 40-50% (so they don’t go mad on the pond), but I wonder is there any electrical way to reduce the current from say the ESC to the motor like a servomorph type gadget so there is full throttle stick travel but only 50% power output to the motor?
I have very basic electrical knowledge so please explain any circuitry as simply as possible.

I’ve tried looking through the Black Arts and Brushed motors threads but can’t find anything.
Over to you guys………

Kev.
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tigertiger

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Re: Limiting power to the motor?
« Reply #1 on: May 22, 2017, 11:42:14 am »

A lower voltage battery will run the motor slower.
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red110kev

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Re: Limiting power to the motor?
« Reply #2 on: May 22, 2017, 01:12:50 pm »

Cheers TigerTiger...... never thought of a simple solution like that!
Will give it a try.
 :-)



.... I think I'll try a smaller prop too (35mm instead of the stock 40mm).
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barriew

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Re: Limiting power to the motor?
« Reply #3 on: May 22, 2017, 01:45:19 pm »

If that doesn't meet your requirement, a servomorph gadget can be used. I built one using an Arduino at a cost of about £4.


Barrie
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