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Hydraulic re pumps/ motors

1

1946 BN IHC

Member
Thinking about a picture I noticed in the IHC archives of an IHC Cub with a snow blower on the front of, it driven off the pto..
Question?? Would it be feasible to to do a similar thing BUT use the hydraulic pump on the engine of IE Supper A or C connected to a hydraulic motor on the blower instead of linked to the pto output with a jack shaft?
Or would one simply hook a second high out put pump to the front pulley of the engine then to the hydraulic motor on the blower?
I am simply pondering the idea as a feasible possibility and would like some input from the many great mechanics who have worked on hydraulics over the years.
This could provide an alternative to using a blade to push snow around in the winter [ My own thought and experience, is a blower is superior to a blade in most instances]
 
The cub as well as the Super A and C are geared too fast for snow blowing To get the blower up to speed the engine must be operating at full throttle. The tractor then operated at a speed that either bogs the engine or plugs up the blower. A cub with reduction (2 speed axle attachment (rare)) would still be way under powered to blow more than 3 inch snow. A hydrostatic transmission on a modern compact tractor is the best answer. A push blade on the Cub, or SA SC would be better than any blower.
The only blower suitable would be one that was self powered. Then the engine on the tractor would not need high speed, the blower could run well, and the usefulness acceptable.
Hydraulic drives do work, but are energy draws on a system needing more power, not less.
Jim
 
You couldn't operate a very big snow blower with the output of an A or C gear pump. Just not enough flow and then the loss that Jim mentioned would leave even less. A pto driven pump or even a crankshaft driven one might help, but with only about 22 to 25 HP, it still would not be much of a blower. We changed the internal 12gpm pump out of a 460U to a 17gpm when I worked in the engineering lab at Cessna and drove a Cessna 8 cu/in high torque piston motor on a brush hog and it did a good job. Something along those lines would handle a good sized blower. We also added 1" (-16) lines and disconnects to handle the flow to the mower. The valve had a "float' position so it would stay engaged. I actually ran it in a pasture with sand hill plum thickets and it was pretty amazing how it would go through them. Sure did throw some of the pieces a long ways!
 
Thank you IH Fan & Jim for your thoughts. I like the comment about the pump change and the mower with an open floating valve. I was thinking that those series tractors would not have the oomph on their own but would need an assist engine on the blower. It certainly gives one some ideas for design for both brush hogs and blowers if one wants to put them on the front of the tractor. I have an older small engine outlet just down the road I may see if he has a used engine that might do such a job." You know curiosity and cats" I like designing; I will be mounting a fail mower on the back of mine when I have it up and running though, probably next year. I will keep a copy of this post in my tractor file.
Thank you again for your input.
 
The speed differential between ground speed and engine speed needed to use some equipment: roto tillers, live plant transplanting tools, snow blowers, and bushhogs, and baling, is best served by add on or built into engines. The tractors were designed with tillage tasks using cultivators with shovels, disk harrows, and moldboard plows. they were fine for that. The manufacturer never assumed owners would need to go .5mph wide open. Jim
 
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