Turning Radius

[Dokatd]

Did you measure what the turning radius (or circle) is now?

It's about 3-4ft tighter overall.

 

[Zimm]

The turns lock to lock I read as 3.85. I think my ford is something like 3.

I wonder if the choice to have that level of increased input precision presented the issue of the chosen off the shelf box running out of manufacturer recommended movement range, necessitating a premature stop of the steering angle. Which would have made it an engineering compromise for what the designer prioritized, not a design flaw. Anyone have a solid working knowlege of recirc ball design, that they could make an informed opinion on that? I don't see how that would affect a rack and pinion, but the ball box may be different.

 

[NQ94]

The turns lock to lock I read as 3.85. I think my ford is something like 3.

I wonder if the choice to have that level of increased input precision presented the issue of the chosen off the shelf box running out of manufacturer recommended movement range, necessitating a premature stop of the steering angle. Which would have made it an engineering compromise for what the designer prioritized, not a design flaw. Anyone have a solid working knowlege of recirc ball design, that they could make an informed opinion on that? I don't see how that would affect a rack and pinion, but the ball box may be different.

Recirculating power steering design. This will be near identical to the Grenadier steer system except for the vane pump being an electrohydraulic gear pump.

 

[Zimm]

Recirculating power steering design. This will be near identical to the Grenadier steer system except for the vane pump being an electrohydraulic gear pump.
View attachment 7898952

Well... if one increases the turns by making a change to the input via making a finer "thread" on "ball rack/shaft" assembly requiring more turns to move the rack, I don't see an issue. BUT if one were to increase the needed turns of the wheel to move the drag link "x" distance by adjusting on the output side, by merely making the pitman shorter, the rack would run out of usable travel. Minor corrections would also need much more input causing wandering sensation.

At least that what I see. correct me if I'm i'm in error.

 

[NQ94]

The diagram is the larger version of the ZF Bosch steering box manual for 5t truck. The Bosch unit in the Grenadier is a hefty unit and will follow similar a design with size and the mounting orientation and case position being the only real difference.
Likely to put excessive loads and shortening the service life of the torsion bar that is connected to the steering wheel when the piston is forced to the stops.