DIY powerfeed

[Skidoojustin]

Hey all, I need some help. Im building a power feed on my lt15 using a wheelchair motor and a drum and cable, much the same as the rope feed and crank it originally came with. The motor is off a jazzy 1120 power chair and is a fairly large motor. Running on 12v. 
The problem I'm having is the saw head only starts to move a 90-95% and is wide open at 100% which is making the saw head hard to control. 100% is much to fast. I'm using a 10-55v 60amp PWM. Is it because I'm running 12v instead of 24v or is something wrong with the PWM. Most videos of power feed builds, the saw head will start moving at 30% or so on the PWM. Any help much appreciated.

[barbender]

Was the Jazzy motor designed for 12v or 24v?

[Skidoojustin]

The power chair was 24v. The motor itself doesn't say. Model number on the motor is E675

[ladylake]

  If its going way to fast try gearing it down.  Steve

[Magicman]

Before trying to otherwise control the motor speed, I would match the motor to the correct voltage.

[fluidpowerpro]

This guy used a jazzy wheel chair motor.

https://youtu.be/AMGNQrd_yXw?si=nwW8BcTbEn-6mWZu

[jpassardi]

I made the same setup for my LT15 and it works well. Jazzy motor (not sure if same model)  running on 12V and the 60 amp PWM. The drive pulley is about 4". I can slow it down more than enough. What size pulley or sprocket are you using?

BTW: I had to replace the cheap rocker switches that the PWM comes with.

I use a dump truck tarp gear motor and a PWM to run my up/down.

[Skidoojustin]

I'm very interested in seeing your setup. Im hoping to spend some time this weekend trying to figure this out. The motor is running plenty fast on 12v at 100% the return is about right. Just having trouble controlling it with the pwm. The motor is a drvmotr1116 hi-speed. Model # E675. When I turn the pot the motor only starts turning at about 90-95%. I'd love to see pictures of your setup.

[never finished]

I set mine up to saw in reverse and gig back in forward. They tend to reverse slower.

[ktm250rider]

I have a similar issue running my motor at 12v.  Im wondering if its the motor age as it was purchased used through Ebay.  Im also running a reclaimed from the dump battery which doesnt hold a charge for too long.  If i hook my jump box the motor seems to have more control.
I did just learn about 12-24v up converters that i need to wire in and see if that helps.