It would easier to buy a 100k linear potentiometer and careful remove the existing one from the circuit board and solder the new 100k in place. If you are mounting the thing remote you will need a length of 3 core flex from the board to the hand set. I did a similar thing for a friends grand children electric car, made from a scrap disable buggy. John

Can't really tell without a circuit diagram. If you don't mind the risk of burning out the pot and/or the electronics you could try it and see. Normally I wouldn't risk it – 90k and 10k are an order of magnitude apart. However, as a new pot is only about £3 and the electronics £12, busting them both would hardly break the bank.

One other potential complication. Some of the 4QD pots have a 50° travel rather than the usual 270°. I'm not sure what could be done if the dead man's handle needs a 90k 50° component; I've never seen one advertised.

As the pot has three wires instead of 2 it is being used to generate a voltage rather than a resistance so you may well find that its actual value is relatively unimportant, although it may impact on max and minimum values.

As Neil says, it will doubtless work with almost any value pot, within reason. Sounds as if the supplied one is nominal 100k but 10k is still going to draw only a minimal current.

Murray

ah, the 4QD is a special

By the way I suggest adding a bit of forced air cooling and a way to stop the kids slamming it into reverse. Perhaps a simulated steam screw reverser that will take a while for them to wind over to the opposite direction.

Edited By Bazyle on 28/05/2017 20:42:02

Another solution would be to make a Dead Man's handle to suit. Bit of a faff, but making a 5:1 gear / spring / handle assembly for a 270° pot isn't impossible.