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Hydro Drive

IH CUB Lo-Boy Series - 154, 184, 185 Forum -- Questions and answers to all of your Lo-Boy related issues.
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strutz3921
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Hydro Drive

Postby strutz3921 » Wed Mar 17, 2010 7:10 pm

Has anyone put a hydro drive in a 154? I was thinking about trying it out sometime!


Chad

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SONNY
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Re: Hydro Drive

Postby SONNY » Wed Mar 17, 2010 10:36 pm

Been seriously lookin at my 185 and the hydro idea!---don't have the necessary parts right now or I would have already did it to get rid of the sloppy/grabby foot clutch! thanks; sonny

strutz3921
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Re: Hydro Drive

Postby strutz3921 » Thu Mar 18, 2010 10:07 am

I have a few Cub Cadet hydro setups in my barn. It just got me to thinking yesterday about how hard it would be.


Chad

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gitractorman
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Re: Hydro Drive

Postby gitractorman » Fri Mar 19, 2010 2:24 pm

I do not know the exact specs, but I do know that one issue is the differing engine speed. A kohler engine governor is at about 3600 rpm, on a cub cadet, and the farmall cub engine is set at about 1800. That would be an initial hurdle to get over. I know that at 1/2 throttle on a cadet, the pump whines a lot if you try to do anything.

I also do not know the specifics on the transmission itself. One would think that you could swap a complete cub cadet hydro transmission into the lo-boy, so it is plumbed correctly, but then you have the axles spinning the wrong direction (on the gear drive cadets there is a large drive reduction gear in front of the transmission, that is not there on a cub (which apparently gets the drive speed corrected for the higher engine speed and also reverses the drive direction)), so there is another hurdle.

Lastly, I know that the 154/185/184 lo-boys have hydraulic lift, so there must be a hydro pump somewhere, that you would need to incorporate as well.

Just some thoughts.
Bill
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SONNY
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Re: Hydro Drive

Postby SONNY » Fri Mar 19, 2010 9:14 pm

I was thinkin more along the lines of a hydro motor on the trans input shaft and pump driven direct from flywheel!---the lift pump is already on the 185 engine to lift attachments! thanks; sonny

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Rick Prentice
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Re: Hydro Drive

Postby Rick Prentice » Sat Mar 20, 2010 7:29 am

hydro motor on the trans input shaft and pump driven direct from flywheel
Sonny, I have that exact setup still laying on my workbench. I bought a special pump matched to the cubs engine(rpm's/hp/torque) and a matching hyd motor driven from that pump, both designed to produce the same hp and torque numbers of the cub.. Buckeye Hydraulics did all the calculations for me. My plan was to fab the pump onto the back of the engine, then fab the hyd motor to drive the cub's trans. The pump has a side lever that controls movement from 0 to wide open or anywhere in-between. The only drawback with the whole setup---when the cub engine is running full throttle, the hyd motor is only turning 600rpm's. That would've been ok with me because I wanted to slow things down alot, but keep the power. That project has been on hold, but I'd still like to do it some day.

Chad, that sounds like a fun project. Hope you try it and take pics along the way.

Rick
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gitractorman
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Re: Hydro Drive

Postby gitractorman » Sun Mar 21, 2010 7:12 am

Something to keep in mind when building "new" hydro drive tractors. If you have ever looked at the speed control linkage for a Cub Cadet, you know that it is a bit complicated, lots of levers, swash plate, etc. The reason for this is LOTS of engineering that went into keeping operators from flipping the tractor over. The first Cub Cadet hydro drive tractor was built by Charles Ricketts, a Sunstrand Corporation engineer, and used a Cub Cadet Original, with the hydro drive sitting right on top of the tranny tunnel. Stories say that he literally flipped the first several prototype tractors right over, because they had the lever attached directly to the valve on the hydro pump, and if you touched the lever, you were opening the hydro valve too far, and the tractor would literally buck and flip right over from the rapid increase in tire speed. Later they came up with the swash plate / lever design, which lets you move the lever a lot, yet only move the valve on the hydro pump very little. Remember, hydraulics are powerful!

Bill
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Rick Prentice
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Re: Hydro Drive

Postby Rick Prentice » Sun Mar 21, 2010 10:59 am

Thanks Bill. I noticed all that mechanism when I was checking out the hydo on the cadets. Bet that took awhile to dial in that engineering :shock:

Rick
When I told my dad I've been misplacing things and doing stupid stuff----His reply---"It only gets better"

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Re: Hydro Drive

Postby BigBill » Sun Mar 28, 2010 9:12 pm

On the int154 site there is a picture of a int154 with a hydro setup. It maybe a factory proto type but i'm not sure its in the picture section.

With any hydraulic system we need to match the hydraulic pump to the available horse power. We also need to match the hydraulic motor out put to the torque thats needed to move the tractor thus allowing it for work too. Its the hydraulic pump to the hydraulic motor out put.

You know by having two 154 tranny's with final drives an articulated 4x4 tractor can be made using two hydraulic motors, one on each tranny? A 154 articulated 4x4 would be neat to see with the 13.6 x 16 turf tires front and rear.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.


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