Motor Controller Modification - For Servo And Clutch Motors

[vericone]

I've bought Jack Jk-561A-1 Servo Motor and I'm really happy with it. But there is a nice modification to make, good for a newbies like me, to make the servo motor even more predictive. I've nowhere found similar idea, so I've decided to share. I made this mod with the clutch motor that was previously installed on my machine, and it was running quite good. But as the leather does not like mistakes... I've got a servo. Returning to the point, here are photos of the modification. The cost of it is about $2. Only downsides I've spotted by now are:
first - You can not "back" the treadle (that makes the lever on the motor controller go up. And for me this is not a problem),
second - when you lift the treadle and then it drops down, it can pull the controller and sew a stitch (changing the lever spring should fix it).

The main thing, the mod does is that for the 17mm movement of the controller lever You need to push the treadle by 35mm. Even with motor set to the highest speed there is no problem for a newbie to control the speed from slow to full.

( I hope it's all clear, as English is not my native language )

[Wishful]

So it looks like a home made version/adaptation of a speed reducer. A for effort.

Edited June 9, 2015 by Wishful

[cdthayer]

I like the idea.

CD in Oklahoma

[vericone]

Well, when talking about a clutch motor it works as a speed reducer of some sort (as it make the "ignition margin" bigger ). Also it is easier to make than making the clutch arm longer, as I've seen somewhere.

I use this mod with a speed reducer (about 3:1) what makes the machine go smoothly from about 1 stitch per second to the top speed.