Converting volume pedal to wah wah

[uki]

Hey guys, I have notice that the mechanics of the volume pedal only spin the pot about 1/4 of a turn, a pot total spin is about 3/4 of a turn, are there any tricks to increase the turning range to at least 1/2 in the pedal mechanism ?

[tubeswell]

A rack and pinion (probably). You decide how.

[pdf64]

… I have notice that the mechanics of the volume pedal only spin the pot about 1/4 of a turn, a pot total spin is about 3/4 of a turn …

That pot will have a special custom pot, probably one whose electrical range aligns with the available mechanical rotation.
I suppose it’s a lot cheaper to make them like that.
But when the pot fails, a replacement pot may be little cheaper than a new pedal.
So probably the pedal is no good for repurposing as a wah, as they require pretty much the full pot range.
But there’s plenty of applications where a foot pedal control of a variable resistance may be useful, eg gain control.