czar800
ArboristSite Guru
I have been thinking about making a homemade winch from a old truck transmission & rear end. Any one with pictures of a homemade Winch out there?
How BIG of a winch are you talking about? Have you seen one you are trying to copy?
I would never discourage someone thinking outside the box
After all the thinking is done, you have to think it over. Is it practical? Does it matter? It is my creation, and I did it my way!!!!
Now let's think this one over (get comfy, this could take some time)
Hyrdaulic motor has some advantages. You can PULL forever and not over heat the thing. Drawback is that it ain't cheap. Plus you have to provide a pump somewhere, and a valve plus hoses.
I have a few motors laying a round and plan on plugging in to a tractor or skid-loader.
Electric can be overloaded severly for a few seconds. Is also relativly cheap to buy and hook up. In the smaller size, even quite affordable! Beware of china motors.... some quality control issues.
Okay, using a spare tranny and a rear axle. Heavy is the only real drawback. If you open up the diff and weld the spiders together then you can cut one tube off completly. This would give you the same ratio as the diff.
Sticking a tranny in there.... gives lots of options, and some fast pulling, or severe major grunt when needed.
I just looked up a hydraulic motor (northern) low speed, high torque.
310 ft. lb torque, 150 RPM, about 16 gpm.
One of your drawings showed a granny tranny. Let's make some assumptions. 6 to 1 first gear? Maybe a 3.5 to 1 differential?
7.14 RPM Ah yes I know this speed! It is the speed of evolution!!!
Your basic really slow mode. What is the torque? 6510 not counting friction. This is in pounds/feet. So.... that means if you were using a wheel, with the cable about 1 foot from the axle it would pull 6000 lbs. cut the wheel to 1/2 size and you can double that. 12000.... Which would not work for long. THe axle would break. Or the bearings would explode. The U-joints between the tranny and the differential have a torque rating as well.....
I have a slip clutch to hopefully fix that problem.
Okay, leave a wheel on there for now. makes a nice place to spool cable onto. It will pull almost 3 tons like it is. Now let's get something done!!
High gear! 42.85 rpm, and 1085 pounds! This is brutal.
It would pull over 1000 pounds at 3 mph!!!! This could work...
Your mileage may vary... This is based on a "wheel" of 24 inch diameter.
In actual fact, you may be using a 15" auto steel wheel Which is gonna be considerably smaller (more pull) but slower.
I like the 3 MPH idea, that is fast enough to actually get-er-done !!
It dose have a 15" rim now, I was think about making it about 2-4".
Food for thought from a guy who has been there, and done things like this.
-Pat
I love to build stuff too!
Just think things out pretty well, it will work.
I don't know what the tractor's hydraulics are capable in terms of GPM, or PSI. You might want to determine that first.
The bonus is that welding can be "fun". At least I enjoy it at times!!
Send pix....
-Pat
One thing you should be careful of, you will be pulling off center watch your tractor doesn't skid around and pin you into a tree. Also do you think you will be able to anchor the tractor so it won't slide backward or pick the front end up?
Enter your email address to join: