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Using a resistor Question
Using a resistor Question
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Old 29th April 2007, 01:34 PM   #1
DARTICUS is offline DARTICUS  United States
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Default Using a resistor Question

I want to reduce the speed of a model electric plane motor.Is there something I can put inline with the motor to cut the battery power to the motor? Battery is 8.4V AND 300- 500mAh.The controller will vary the speed with my input of pushing the lever but I want to make a variable or permanent change to the motor so it can't go toooo fast. Thanks Ron

email me ron222@earthlink.net
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Old 29th April 2007, 06:31 PM   #2
Nordic is offline Nordic  South Africa
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try about 1watt 2ohm in series with ground wire... to drop 1V and allow 0.5A
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Old 29th April 2007, 08:40 PM   #3
cpemma is offline cpemma  United Kingdom
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Default Re: Using a resistor Question

Originally posted by DARTICUS
I want to reduce the speed of a model electric plane motor...Battery is 8.4V AND 300- 500mAh.
It's the motor rating you/we need to know, the battery capacity is irrelevant. You can reduce the voltage to an unknown small motor with a string of 1N4001 diodes in one of the leads; they'll carry up to 1A and drop about 0.8V per diode.
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