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DIY powerfeed

Started by Skidoojustin, November 27, 2024, 09:42:52 PM

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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.
2005 Woodmizer lt15. International harvester 384

barbender

Was the Jazzy motor designed for 12v or 24v?
Too many irons in the fire

Skidoojustin

The power chair was 24v. The motor itself doesn't say. Model number on the motor is E675
2005 Woodmizer lt15. International harvester 384

ladylake


  If its going way to fast try gearing it down.  Steve
Timberking B20  18000  hours +  Case75xt grapple + forks+8" snow bucket + dirt bucket   770 Oliver   Lots(too many) of chainsaws, Like the Echo saws and the Stihl and Husky     W5  Case loader   1  trailers  Wright sharpener     Suffolk  setter Volvo MCT125c skid loader

Magicman

Before trying to otherwise control the motor speed, I would match the motor to the correct voltage.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

fluidpowerpro

Change is hard....
Especially when a jar full of it falls off the top shelf and hits your head!

Local wind direction is determined by how I park my mill.

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.
LT15 W/Trailer, Log Turner, Power Feed & up/down
CAT 416 Backhoe W/ Self Built Hydraulic Thumb and Forks
Husky 372XP, 550XPG, 60, 50,   WM CBN Sharpener & Setter
40K # Excavator, Bobcat 763, Kubota RTV 900
Orlan Wood Gasification Boiler -Slab Disposer

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.
2005 Woodmizer lt15. International harvester 384

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