Perhaps one of the weak Locktights applied then broken would gum it up enough to prevent the movement.

John

The only thing I would add to the comments made by Les is that the potentiometer is indirectly connected to the mains input supply and if relocated it would need to be well isolated and protected from the local environment including you!!

Cheers

Martin

I fitted an AL-500X to my clone and haven`t seen this problem. The central know seems to be clear of the handle (no rubbing), although mine`s only a year or so old and won`t be getting the proper use you give yours..

Given that this is presumably a fairly std pot with a knob fitted to it, have you tried loosening the grub screw and sliding the knob out a few mm to give clearance? You could also check for swarf and gunge in there.

As for stiffening up the movement, they usually just use some form of grease on the shaft. You probably can`t easily replenish it. Perhaps if you can remove the knob, you may be able to fit a wave washer between the back of the knob and the housing to stiffen the motion up.

Murray

Edit – sorry, Ed, there`s a bad echo in here!

Edited By Muzzer on 24/10/2014 11:22:48

John. I don’t know the part you are mention ing..
..I have seen simular for hydraulics…all mechanical..

Anyway..if I understand you have a control handle for fwd/reverse and concentric with that a pot. That does the speed..could you replace the pot knob with a locking type..the catch operates on the mounting spigot of the pot and locks the shaft relative to that spigot…