A Tandem Cub

[IHinIN]

Very nice work so far.

I built a dump trailer and I had to mess with the cylinder mounting to come up with a mounting position that would give me enough dumping angle as well as enough lifting capacity. Mine uses a 2”x8” cylinder and with 700psi hydraulic pressure, the bed lifts with 400lbs on the front edge of the trailer. It may lift more but that’s all the weight I could come up at the time I tested it.

[john hall]

Instead of a ported pump, how about a front mounted hydraulic pump? Yes I know you would have to have a separate tank. Just tossing out ideas.

[sawdustdad]

Originally Posted by john hall

Instead of a ported pump, how about a front mounted hydraulic pump? Yes I know you would have to have a separate tank. Just tossing out ideas.

Yes, that's an alternative. If I could tap into one of the rear end's hydro fluid, I could just use one of them for the tank.

If I could get a ported hydro for $100 it would be far cheaper than any alternative. The engine does not have a PTO on it right now, but I have one I could put on it easily enough. And I can fab a support frame for a pump. If I can't get a ported hydro, this would be the next most reasonable alternative. The pump itself would be less than $100.

To supply the pump from the rear end would require a "Tee" in the suction line and then a return to the rear cover plug location. Both doable, but a ported hydro would be a cleaner install and leave the front PTO available for something else...

[J-Mech]

On the front mounted pump thing:
I agree that using the rear end for fluid is the best choice. But I wouldn't "T" the suction line. Likely cause issues. As in fluid starvation of one or both pumps. Drilling a tapping a second hole would be better. Don't have to return to the rear fill plug. Weld a bung on the top cover and drain into the top. Could even install a suction tube into the oil from that point also.

You don't need a PTO for a front pump. It can run all the time.

I'm just making comments..... I would also go the ported pump route. Sorry, no extra ones laying around.

[Rescue11]

Originally Posted by J-Mech

On the front mounted pump thing:
I agree that using the rear end for fluid is the best choice. But I wouldn't "T" the suction line. Likely cause issues. As in fluid starvation of one or both pumps. Drilling a tapping a second hole would be better. Don't have to return to the rear fill plug. Weld a bung on the top cover and drain into the top. Could even install a suction tube into the oil from that point also.

You don't need a PTO for a front pump. It can run all the time.

I'm just making comments..... I would also go the ported pump route. Sorry, no extra ones laying around.

I agree, FWIW, on hydraulic comments. Nightow1, (Keith) AKA... HIGH SPEED, has a really nice ported hydro and rear end. He's been wanting to sell it for a while now.

[sawdustdad]

Certainly removing the transmission top cover and tapping it for connections would be easier (and not require draining the rear end).

I was thinking I'd need the PTO as a pulley to drive the pump, though a plain pulley could be installed, I suppose.

Where would you mount a pump if you were to drive it off the front PTO location? Would you mount it off to the side like the starter? Or underneath, like a snowblower or genset's pulley on a bracket attached to the frame?

The logistics of finding a ported pump and shipping, might be too much of a hassle and the costs would be comparable in that a gear pump would only cost about $100. +/-

[sawdustdad]

Found this pump at Northern tool on sale. Bought it. 1.2gpm should work fine with the 2 inch by 8 inch stroke cylinder.

[john hall]

My thinking on the front mounted pump would be bolted to the engine, like a wood splitter. May need a LoveJoy coupling. I'm assuming an adpater could be bolted to the engine, if not something would have to be made and attached to the frame/grill.

Many years ago we worked on an "O" that someone had such a setup on. The owner wasn't the one that made the mods. I think someones plan was to use the lawnmower to power the pump for a wood splitter. Anyway, we stripped all that off.

[Alvy]

Frank i was going to suggest mounting the pump to the output of the second hydro but I see you’ve mounted your battery there. Lots of unfabbing to get that I’m there but I like that it would be hidden and able to tie in to the hydro reservoir suction as well.

[J-Mech]

Originally Posted by sawdustdad

Certainly removing the transmission top cover and tapping it for connections would be easier (and not require draining the rear end).

Just as a note, I'd buy a weld on bung. The cover really isn't thick enough to tap. I wasn't clear.

Originally Posted by sawdustdad

I was thinking I'd need the PTO as a pulley to drive the pump, though a plain pulley could be installed, I suppose.

Where would you mount a pump if you were to drive it off the front PTO location? Would you mount it off to the side like the starter? Or underneath, like a snowblower or genset's pulley on a bracket attached to the frame?

Yes, a plain pulley would be fine. See below for mounting.

Originally Posted by sawdustdad

Found this pump at Northern tool on sale. Bought it. 1.2gpm should work fine with the 2 inch by 8 inch stroke cylinder.

Fantastic!

Originally Posted by john hall

My thinking on the front mounted pump would be bolted to the engine, like a wood splitter. May need a LoveJoy coupling. I'm assuming an adpater could be bolted to the engine,

This was my thinking. But there is a "but". *BUT* it would only work if the engine was tapped for an electric PTO. If it isn't, then a different mounting would have to be made. If it can't be direct driven, I suggest mounting it under the front on a bracket attached were the mule drive is. Cleaner look, short belt.

If you do have the PTO mounting holes, should just be able to bolt an adapter on. Love joy coupler will be required. There may not be enough room though. Just have to measure it out.

Originally Posted by Alvy

Frank i was going to suggest mounting the pump to the output of the second hydro but I see you’ve mounted your battery there. Lots of unfabbing to get that I’m there but I like that it would be hidden and able to tie in to the hydro reservoir suction as well.

That would also be a very good mounting point. If there is/was room.