After blowing a few PTO shafts off wreckers and woods gear, I quit trying to make them out of mild steel, but use 1144 stressproof instead. It's machinable, but a lot tougher, like 115,000 psi tensile.

I don't know what a wound out binder BD272 puts out, but I've poured that into a 1" stressproof shaft at 3000 rpm a few times pulling on things I shouldn't have even hooked up to. Sheared the pin, put in a grade 8, sheared the brass in the winch. Glad the cable didn't break. I think it would have come right through the b** tower and cab.

Same shaft blew out if you looked at it crossways when I made it out of mild steel.

 

hydraulic control systems are a passion.
No need for a slip yoke, altho you might wanna consider a shaft spider to limit vibration between the engine and the pump. The pumps will have a spline or a key on the input shaft.
2500 PSI at 92 GPM is a little better than 150 HP.
Your side pump drive belts are gonna need to handle about 40 HP. You might wanna look at a tooth drive belt.
Im assuming your GPM ratings are based on 1800 RPMs rotation speed?

Post up the pics of the pumps. Ive seen some that are set up to piggy back with the change of the end plate.
Also, running a hot saw, do you have the flow rate you need? probably dont need much power, just flow.
You'll dissipate about 1 HP for every 15 square feet of tank surface. the rest you will need to dump thru your air over oil cooler (air to air is your turbo intercooler). You being up north, You might wanna reconsider water over oil to get the oil up to temperature faster using engine heat (like a slushbox)
6" cylinder at 55 gpm is gonna move somewhere around 7.5 inches PER SECOND. multiple cylinder will slow you down, but you might wanna consider some flow / velocity control. use some flow off that big pump for other things.

 

3 cylinder diesel? Probably about 40 HP or so. D239 was good for about 60 PTO HP.

 

Cool!
What's a 'shaft spider'? The reason I was going to use a slip yoke is because when it's time to change belts, I wanted to un-bolt one end of the shaft and slide it together to get the belts off. That, and the pumps will be mounted on a rigid plate while the engine sits on rubber, so it moves a little.
I was close! I was figuring 148HP.
I thought about them but I have no experience with them. Would I still need 2 per pump like I'm figuring on for 'B' series belts?
Yes
One of them is already a 2 section pump, (the 24GPM is 24GPM for both sections combined), and the small one, (13GPM), for the out-feed conveyor I don't need any more flow. The 55GPM pump is an aluminum bodied pump that doesn't bolt together at the back.
Yes, it needs 21GPM and the pump puts out 24.
I knew better than to say air to air. It will be air to oil. Good info on using the water tho, I may change to that.
I WANT it to move that fast! I'm aiming for a 10 to 15 second or less complete cycle time. It's a 6" bore with a 4.5" ram for even quicker retraction times and it has a 32" stroke. AND, I'll have a dump valve running off an additional port in the cylinder that will dump return fluid directly back to the tank instead of making it go back thru the valve.

Thanks Fronty!

 

shaft spider, shaft coupler, spider coupler,
its urethane bushing that mounts between two couplers to take up a bit of misalignment and vibration.
I bet you already have the cylinder too dont you??? 32" stroke, 7.5"/sec extend is like 4 seconds, retract is gonna be about 1/2 that. combine that with what your moving. I would recommend a soft stop on the cylinder. otherwise you got pressure spikes (water hammer) when that cylinder hits the end.

 

International Blue Diamond 272 6 cylinder gas....probably 130 - 150 hp.

 

Ahh, that's a 'Love Joy Connector'!

What's a soft stop comprised of?

 

soft stop is a block inside the cylinder that cuts flow out of the cylinder. it slows the cylinder movement at the end so it doesn't slam against the stop or tail cap.

 

Thanks!

 

after a bit more searching, it looks like most companies refer to them as cushions.

the pin on the end of the rod blocks most of the port for the last inch or so. the exhaust fluid is pushed out an orifice. doesn't stop the flow, but slows it down. The rod end is similar. The overall length of the cylinder will increase some for the same stroke.

 

That's pretty neat. I don't if it would work in my cylinder tho. My ports come in from the side and there are 2 of them in the base end.

 

Yeah, if its a tie rod cylinder (has rods running along the cylinder), it can be retrofitted, but about the only part you would be reusing is the body and piston, the rod would have to be replaced, the end caps would have to be replaced. If its a welded cylinder, you wouldn't be able to retrofit since the end cap is welded to the body.

 

so far.

I haven't included the relief valves on each pump.
Any thing missing?

 

Wow, that's impressive!

The 13gpm pump will run the off-feed conveyor as you have shown.

The 55gpm will run the splitter cylinder, also as you've shown.

The 24gpm pump will run the cut-off saw, the log clamp, the in-feed trough, the in-feed live deck, wedge lift, log lift and log table. All these cylinders are quite small in diameter and have a maximum of 14" of stroke. And nothing will be operated while something else is being operated except the log clamp and saw. Those two will be on a sequencing valve so that the saw won't start or lower thru the log until the log clamp reaches a pre-determined pressure. I don't know what that pressure will be yet and I'm hoping it will be adjustable so I can set it up in the field.

I think that's it!

 

I'll work on updating it a bit more.
I would advise the use of pilot operated check valves on the cylinders for the clamp and lifts. This will hold pressure in the cylinder until you apply pressure to move it in the other direction.
the in-feed trough and deck are conveyors?
Also, check out womackmachine.com they have some cushioning solutions that are based on the hydraulics.