520H Power Steering Modification

[JoeM 8,890]

Straight from the back burner, I have been tinkering with this 520H. I bought an orbital steering valve from 19richie66 and decides to modify the 520 to power steering. 

I seen a thread a while ago were someone added steering to a 518. Figured that would be a nice side project if I came across a reasonably priced steering valve. 

 

I wanted to keep it looking the same and tucked in the column. It was a little tricky with a mix of face seal and jic piping. Picked up some face seal fitting from MMC and silver soldered to the steel pipe.  

 

For now it is on ice, next will be the front axle mod to accept the steering cylinder. 

 

Absolutely don't need a 520H with power steering but I like to build things and keeps me out of the Mrs. cross-hairs. 

 

Used the c120 and old deck belt to test run.

 

front view

 

 

 

 

[ebinmaine 74,551]

Interesting concept. 

I've mentally tossed about the idea of using a steering quickener from a race car - but reversed. 

Twice the steering wheel turns but with half the effort.....

 

 

[peter lena 9,454]

@JoeM   like it !  for me experimentation  is a regular thing , don,t have any hydro anything  , but can relate to the piping set up . like trying  to improve / remove repetitive issues . your side view pictures , did it for me , often refer to roller stooling around  a set up , while  trying  something  , makes it much easier, like to  change over  a plow and frame set up , that way , 2 milk crates  hold the frame / plow  at   close to original set up height  , yet you are  free ,  to  swap out  and detail linkage rods , improve  functional detailing, once swapped  out  improved , you can easily  make it  effortlessly  swing  and move , the swing quadrant  squeeze lever , runs the entire show . grand son is slotting  a golf ball size , palm grip metal push / pull point  , he builds welds truck frames  . stay at it , pete    

[JoeM 8,890]

32 minutes ago, ebinmaine said:

a steering quickener from a race car - but reversed

years ago, I kicked that around myself. 

In the end I was thinking if the fan gear would hold up and moved on.

[Handy Don 14,652]

The 518 conversion was in the UK. As part of the project, the member replaced the lower steering shaft and the tie rods with a solid bar linking the spindles. The hydraulic power steering cylinder moved the bar. 

Turns out the different linkage configuration didn’t have a proper Ackerman geometry and so steering was easy but cornering caused tire scuffing and wander. 

 

[JoeM 8,890]

Testing vid