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QUOTE (stoner @ 10 Aug 2011, 13:11) <{POST_SNAPBACK}>hi all! how many turns of AWG do i need to turn a standard ninco analog controller into a 35 ohms unit. thanks john.
Copper wire isn't suitable, you'd need a vast length of very thin wire to make 35 ohms.
Resiatance wire is more difficult to come by.
Maplin do constantan resistance wire but only in 28 AWG , that's 4.2 ohms a meter. You could measure up your resistor and work out how much wire you can get on it, If your resistor is big enough to wind 8.3 meters that'll give you 35 ohms.

Like slotcarscrapyard, I'm not sure its worth doing with that controller
 

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Nichrome wire is what is normally used for controller resistors.
Constantan is an alternative that works well.
Either is difficult to come by.
 

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Quick back of an envelope calculation says theoretically around 300 turns of 39 AWG enamelled copper wire would give about the resistance you want.
It would have to be wound with the wire touching to get all those turns on, then rub off the enamel where the wiper runs.
Not sure how long wire that thin would stand up to a wiper rubbing on it and motor stall current is close to the fusing current.
Try it if you like but don't be surprised if it doesn't last long.

The Parma is much more practical.
 
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