Reply To: Hydraulic steering helm pump

[Bill Fuller]

David,
I think you need to measure the diameter of the ram shaft and the total length of throw of the shaft to do your
calculation.
That should give you the amount of fluid required to move the rudder through its total travel. See the picture.
A few questions.
When you turn the upper helm to the lock does it go to a totally hard feeling or is it spongy?
Can you continue to turn it with some effort?
When you turn either the upper or lower helm, does the other one move?
When making hard turns under fairly strong power does the helm feel like it is sort of chattering or slipping?
And of coarse, has the helm been bled of all air? Actually both helms.
Can you post some picture of both helms and the ram?
Bill