I thought you guys might like to see the hydro conversion of my PT 105HD. I'm pretty stoked at how well it turned out.
Here's my home made power pack. The motor is a 2 HP Harbor Freight, probably the iffiest component in the whole system. The pump I scored used off of eBay for $36. It's a .5 GPM, 3000 PSI pump, identical to the smallest one that Northern sells. I should note that the damn HF motor is clearly labeled as a counter clockwise rotation, non-reversable motor, but rotates it clockwise. I didn't find this out until I had the whole thing plumbed up. I threw the switch and had no flow.
Fortunately the pump I scored was reversable, so all I had to do was swap the inlet and outlet. If it had not been a reversable pump I would have been pretty mad.
Here's the power pack mounted on the frame with the filter.
Home made hydraulic reservoir, formerly a rusty chunk of 6" pipe I found lying in a ditch. It's a touch over 2.5 gallon capacity, way over kill for a system this small.
Four way valve and switch.
Here's a good shot of the whole unit. I used a 2" bore 24" stroke cylinder.
Built in grinder rack and outlets.
Swank laser pointer, thanks for that idea.
And one more shot of the whole bender. I built the support frame out of channel from 19" electronic equipment racks, which was some surplus from work. The backbone is 2.5" square tube, 1/4" wall. I should have took a pic of the cylinder mount, I'll try to remember to do that today.
I've still got a few more little things to add like shelves and die hangers, but I've got to say that I'm extremely pleased with how well it came out. Performance wise, it takes 17 seconds for one full extension of the cylinder with the valve wide open, and you can "feather" it to sneak up on an angle. That's one of the things I really liked about the manual valve over a solenoid actuated setup. One thing that suprised me was that it didn't seem to bog down under load at all, bending 1.75", .095 wall HREW the time to stroke to full extension was exacty the same as it was unloaded, 17 seconds, and the max pressure that I observed on the gauge was about 1200#. It can make a 90 degree bend without having to re-pin the die, in fact full extension of the cylinder yielded a 104 degree bend after spring back.
I think I'm really going to enjoy this machine. Let me know if you guys have any questions or want some better pics, it was dark out when I took those.