which orbital to get?

[ORV design and fab]

I have gotten two orbitals. I am running toy axles with a 6" cylinder. I don't know how to read what to look for in a orbital to pick which one to use. Ill post details when I get them but any info would be greatly appreciated

 

[snappy]

Volume of ram(internal diameter) divided by the cubic inch of displacement of your orbital will give you your lock to lock(how many times the wheel will turn side to side)

 

[ORV design and fab]

Gotcha, let me find out what the CI of displacment of my orbitals.

 

[ORV design and fab]

Here is a pic of what infor I have so what does this tell me

 

[snappy]

google says
This new steering valve replaces Sauer Danfoss model OSPB 125 ON and is an exact fit replacement for the part numbers below.

150-0035
150N0024
150N0035



This valve has all internal specifications, column attachment, and fitting sizes the same as the original unit. It is a 125cc displacement and has 3/4"-16 fittings (#8 SAE), and also has an additional check valve in the pressure port to eliminate any kickback at the steering wheel which may occur occasionally in some hydro-static steering systems.

Unit is a quality part made in Italy, and comes with a one year warranty that is serviced in the US by our service shop in MO.
this is also a none power beyond, so not set up for rear steer

 

[snappy]

L= left
r=right
(keep in mind that you apply the pressure to the correct side to make the ram move the way you want, think opposite)
p= pump
t=tank or return

 

[ORV design and fab]

So check my math...it might be off. To get the volume of a 1.5x6" cylinder. You : Pie x 1.5 x 6= 38.26...is that cc or ci? And

 

[snappy]

So check my math...it might be off. To get the volume of a 1.5x6" cylinder. You : Pie x 1.5 x 6= 38.26...is that cc or ci? And

Cubic inches, all your measurements are in inches, if they where in centimeters it would be cc

 

[paradisePWoffrd]

Are you using single ended or double?

If double this is not right. If single it is correct for 1 direction.

 

[ORV design and fab]

Yea. I have a single ended cylinder.. what do you mean one direction

 

[Jeff B]

the rod displaces oil in the cyl.

 

[ORV design and fab]

Gotcha. Here's my other one. Same setup if possible. Toy axle so 6"...is a 1.5" too small , should I go with 2" diameter on my cylinder??????

 

[ORV design and fab]

 

[Jeff B]

again the bore size will determine the lock to lock & speed VS your orbital Cu. displacement. What is the end result you're looking for?

Something else to add to your equation. More oil volume means more power..

 

[ORV design and fab]

Probably the normal...4 full turns lock to lock.

 

[Jeff B]

tire size? What pump are you running?

1 round on the steering wheel displaces the amount specified by your orbital. How many rounds at 1.5" bore how many at 2" bore?

I run dual cyl. 1.5 bor 1" rod. 1 cyl by itself would not push my 39.5 pbr's with a spool on concrete. I run a push-pull style like on heavy equipment. My orbital is a 7.25cu I am at IIRC 4.5 lock to lock. relief @1750psi in the orbital modified P-pump.

Also you can speed up reaction time with flow..