100k variable from 1m pot...

[petemoore]

For wah or other type effects that you want just a certain amount of variable resistance [say 100k] to be actuated by a treadle moving however far a wah treadle does [about ~1/8 turn?]
 Seems to me there's a say to setup a 1 meg or 500k pot, using only a small portion of it entire travel [that's about all the travel you can get if it would be direct drive to the treadle] ... you would have your variable 100k resistance, and setting up a treadle to direct drive the shaft [for a smallish portion of it's travel but set up enough for the specific application.
 Adding resistance values to outside the lugs or inside the lugs you could fine tune the travel to the resistance, so that you get the variable resistance at preset parameters you want
 Is this feasible or impracticle [well besides the amazing amount of first round tweaking or math it would take to figure it out] for some reason?
 I like this idea because I have a need for 'treadleys' right now and setting up a see saw on a pot for me would be just a touch enough easier that I might not mind doing the R setups on pots to get treadle actuated resistance variance's'.
 I get this figured out and I'm certainly doing more than one.

[petemoore]

I read the last post...dohh
 I should probably just do it.
 Ok here it is
 Belt system...would require no high tolerance machining.
 Just get a treadle, hook a drive 'pulley' to one side, align and mount a pot with a smaller pulley under that, and use a belt drive system.
 I'm sure they sell somewhere these cog belts and pulleys that could be epoxied or whatever to perfectly functional parameters and different size pulleys would ensure full potshaft rotation !!!
 So where do I get these belts and pulleys with cogs...didn't I see a similar setup in a VCR or something?