WidowMaker
Addicted to ArboristSite
I would never discourage someone thinking outside the box
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.....
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 !!
Food for thought from a guy who has been there, and done things like this.
-Pat
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Patrick
Can you tell us how you calculate these load winching abilities????
Inquiring minds wantta know....