Thread: Mack M75SX
View Single Post
  #33  
Old 03-04-2011, 01:39 AM
Papy Papy is offline
Newbie
 
Join Date: Jan 2011
Location: Somewhere in the swiss mountains
Posts: 121
Papy is on a distinguished road
Default Re: Mack M75SX

Quote:
Originally Posted by ihbuilder View Post
Papy , no problem in your links is the pic for the M series I was looking for ( frame and suspension ) I got the right size chunk of aluminum to mill for the frame piece I'll be making the cylinders the pump , I'll see how the UMS pump works . If it does not have the nards , then I'll put mine in it .

IHSteve
He, he !!!! I like the rugged I-shape frame and the walking beam type rear suspension

I have previously made drawings of the M45SX. Basically the same shape as the M75....if this helps, you can have them.

For the hydraulics, at 1250 psi the pressure of the original Heil hoist system is very low compared to modern systems. In model form, this pressure could probably be reached by one of these fuel pumps for RC cars, just using a stronger motor or even with a windshield washer pump.

By the way, the pump of the Wedico #294 kit is nearly exactly set at the correct pressure (6 bars = 85 psi --> 85 psi x 14.5 = 1232 psi).

Another possibility : topsflo pumps. Not tested though.........

Last edited by Papy; 03-04-2011 at 01:48 AM.
Reply With Quote