does a 500k joystick exist? or how can I change the circuit?

[eatyourguitar]

I'm trying to build an APC with a joystick and all I can find are 10k and 100k joysticks. the circuit has two 500k pots right now but I want to replace that with one joystick.
here is a schematic. so do I change something else in the circuit to make it work with 100k pots?

[McSpunckle]

I think 4Site does customs, but you'd likely have to buy a lot.

You could put the joystick pots in series with the 500K pots, and use the 500K as "range" controls.

[nbabmf]

Try it with 100k pots first. You might be pleasantly surprised.

[smallsnd/bigsnd]

have the joystick pots control the voltage of an LED/photocell pair or vactrol. you should get a huge range

[DESICCATED HUSK]

it's also a pain in the butt...
but you could take the 100k pots apart and replace the rings with 500k ones...

[eatyourguitar]

all very good ideas, thank you. I'm a noob so all my knowledge is theory more than experience. I was already thinking vactrols (LED + LDR). but I'm reading that the actual range of the vactrol never goes down to 0 Ohms. 0 is important for this project cause the oscillator has to go down to 0.1Hz. also what ever I do its gotta be small enough to fit in this tiny ass box. click my sig for a picture. I was also looking at daul jfet's although I dont fully grasp how they work. and I dont know if I need inverting or non inverting. should I build or buy my vactrols? and where o where would I get the rebuildable joysticks from?

thanks for your help