Need steering help

[acken 173]

Started on another 4WD project, I got the drive done, but can't figure out how to turn.   Testing pics on new site, working good.

[Mike_H 92]

You need a special rotary union coupler device.  Its made from unobtainium.  They are VERY expensive new, but I see them on Ebay from time to time for pennies on the dollar! 

[rokon2813 272]

Take the gears out of the diffs and it should spin in circles.

 

[720nut 4,225]

 say what

[MikeES 458]

I see that it is a variable/shuttle drive- "varuttle".   Varuttles are tricky to steer,  you put the shuttle into reverse at the same time you push the variable forward and ...no wait I think that is how you do an instant high speed reverse.   Maybe you put the variable transmission into reverse, while pulling the shuttle into reverse, and the whole works spins around...I think. 

[Brettw 1,127]

Perhaps a power steering ram and setup to have it articulate at the pivot?  How are you going to power the BGB's with the way they are set up?

 

Edited November 1, 2016 by Brettw

[BLT 718]

Two rams, criss-cross, push -pull?

[acken 173]

It was just a way to store extra rear ends.  This way I can still roll them around, and not have them tip on their nose.

[Ronald Hribar 104]

I put two cub cadet hydro rear ends  together

one in front of the other

cub hydros have input and output shafts

mine drives thru the rear of one 

and out the input shaft 

a PTO shaft with two universals drives the second hydro thru the output shaft

i have two hydraulic pumps

one on front rear end input shaft

to power loader

second one is mounted on 23 hp Vanguard 

this drives the steering valve that powers  two steering cylinders

it moves the whole rear end

very difficult to sync front and rear transmissions 

especially when turning

had foot control for forward /reverse

too touchy

have hand control now

[Kent 435]

On 10/31/2016 at 8:51 PM, Brettw said:

Perhaps a power steering ram and setup to have it articulate at the pivot?  

 

 

That's how Power Trac does it - a ram on each side, at an angle.... But be aware that hydraulic steering wheel valves are quite expensive.,. much more so than joystick loader valves, for example.