PSC Hydro Assist Mounted to Pitman arm
#11
JK Super Freak
The top arrow is the direction the ram pushes the pitman arm when the ram is mounted on the pitman arm.
The bottom arrow is the direction needed to steer.
Mounted on the axle the ram pushes identical to the bottom arrow.
If the tire is jammed into a rock when the ram pushes in the top arrow it wants to bend the drag link and severely stresses the drag link end at the pitman arm in an axis maybe 20 degrees off axis. This potentially compromises that rod end also.
The bottom arrow is the direction needed to steer.
Mounted on the axle the ram pushes identical to the bottom arrow.
If the tire is jammed into a rock when the ram pushes in the top arrow it wants to bend the drag link and severely stresses the drag link end at the pitman arm in an axis maybe 20 degrees off axis. This potentially compromises that rod end also.
Last edited by Biginboca; 04-21-2017 at 06:23 AM.
#12
The top arrow is the direction the ram pushes the pitman arm when the ram is mounted on the pitman arm.
The bottom arrow is the direction needed to steer.
Mounted on the axle the ram pushes identical to the bottom arrow.
If the tire is jammed into a rock when the ram pushes in the top arrow it wants to bend the drag link and severely stresses the drag link end at the pitman arm in an axis maybe 20 degrees off axis. This potentially compromises that rod end also.
The bottom arrow is the direction needed to steer.
Mounted on the axle the ram pushes identical to the bottom arrow.
If the tire is jammed into a rock when the ram pushes in the top arrow it wants to bend the drag link and severely stresses the drag link end at the pitman arm in an axis maybe 20 degrees off axis. This potentially compromises that rod end also.
#13
JK Super Freak
#14
JK Newbie
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#15
JK Super Freak
With the ram on the pitman arm it adds significant stress to the drag link and could easily bend it. This would be especially so when the passenger tire is drooped as in my image above.
As far as I can tell the tie rod would see the same stress either way.
Last edited by Biginboca; 04-21-2017 at 09:22 AM.
#16
Exactly. Assist mounted up high @ pitman arm + drooped draglink = x + y force vectors on the steering knuckle = less efficiency. Assist @ tie-rod = x force vector only = max efficiency.
Steering knuckle, tie-rod, and ram-assist mounted parallel to the tie-rod all move on the same plane of direction. All 3 essentially moving all along the x-axis if both the tie-rod and imaginary axis drawn vertically through the steering knuckle's tie-rod mounting hole (which is now the y-axis), are perpendicular to each other.
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#17
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Exactly. Assist mounted up high @ pitman arm + drooped draglink = x + y force vectors on the steering knuckle = less efficiency. Assist @ tie-rod = x force vector only = max efficiency.
Steering knuckle, tie-rod, and ram-assist mounted parallel to the tie-rod all move on the same plane of direction. All 3 essentially moving all along the x-axis if both the tie-rod and imaginary axis drawn vertically through the steering knuckle's tie-rod mounting hole (which is now the y-axis), are perpendicular to each other.
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Steering knuckle, tie-rod, and ram-assist mounted parallel to the tie-rod all move on the same plane of direction. All 3 essentially moving all along the x-axis if both the tie-rod and imaginary axis drawn vertically through the steering knuckle's tie-rod mounting hole (which is now the y-axis), are perpendicular to each other.
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#18
I'm getting the WTO ram also and am mounting it at the tie-rod, double shear on both ends. The only thing I'm doing differently is upgrading all the lines to the PSC high-pressure lines WITHOUT the teflon inserts and will keep the WTO lines as spares.
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#19
JK Junkie
Ah, perfect. A picture of what I have tried to explain to the crowd running out to buy the new PSC steering box. That about sums it up.
The top arrow is the direction the ram pushes the pitman arm when the ram is mounted on the pitman arm.
The bottom arrow is the direction needed to steer.
Mounted on the axle the ram pushes identical to the bottom arrow.
If the tire is jammed into a rock when the ram pushes in the top arrow it wants to bend the drag link and severely stresses the drag link end at the pitman arm in an axis maybe 20 degrees off axis. This potentially compromises that rod end also.
The bottom arrow is the direction needed to steer.
Mounted on the axle the ram pushes identical to the bottom arrow.
If the tire is jammed into a rock when the ram pushes in the top arrow it wants to bend the drag link and severely stresses the drag link end at the pitman arm in an axis maybe 20 degrees off axis. This potentially compromises that rod end also.
#20
The ram sits above the pitman arm which only rotates in one plane. The draglink sits below the pitman arm and in this case is on a heim which allows the draglink to move in a y axis as the axle travels up and down. The pitman arm and the ram above it do not travel in a y axis and ram is exerting force on the pitman arm.