Power Steering System and matching the spec with Raymarine Autopilot

[picardy]

Hi all

I wish to fit a Raymarine Autopilot to my 20ft wooden motor launch for coastal passages. I am minded to go with the Vetus system MTC30 kit - Hydraulic steering kit - Steering systems but am not set on it but am set on a Raymarine hydraulic pilot system (see below).

The boat is a displacement hull and will have a cruising speed of 6-7 knots.

My questions are

1) Will the above Vetus single ram system integrate with the Raymarine Hydraulic Pump System EVO-100 here Raymarine Evolution EV-100 Power Autopilot with Type 0.5 Hydraulic Pump and p70Rs - T70154
2) If one or other isn't suitable which needs to be changed and to what?
3) I might wish to install the steering system this summer and then the autopilot a few months later - is that a problem or does it all need to happen at the same time?
4). Do I need any other essential hardware to make this work effectively eg oil reservoir, bypass valves etc

Advice grateful fully received as always.

 

[pvb]

Why not ask Vetus and Raymarine? Then, if their advice is incorrect, you have some comeback.

 

[Rappey]

Hydraulic is pretty basic. A helm which is the pump and a cylinder with two hydraulic lines to each end of the cylinder.
When you add an autopilot you just T into the two lines to connect an electric hyraulic pump. A 3rd line is also added linking the electric pump to the helm unit.
The only thing that needs to be compatible is the cubic centimeters of fluid that each unit moves .

 

[kippers26]

You will need to check that the Vetus Helm pump has non return valves fitted, or else you will need to include a pair of non return valves in the system. I fitted a Vetus steering system and then added a Raymarine EV 150 Autopilot several years later.

 

[Rappey]

I have seastar helm and ram with autohelm computer and raymarine pump.
Works brilliantly.

 

[Hunterlees]

The cylinder you plan to use has a capacity of around 65cc, which is well within the capability of the EV100.
Note post #4 re extra valves.
I am going through a similar process, adding a s/h Raymarine S2 autopilot to an existing hydraulic system.
This ebay pump listing has some useful info in the product description
Autopilot Hydraulic Pump For Raymarine & Simrad Systems, Type 1, Type 2, Type 3 | eBay

 

[picardy]

Thanks all - very helpful. The comments about needing a non return valve is particularly useful.

Does anyone have a link for a power steering kit that would be suitable for the EVO 100 Autopilot and a 20ft displacement hull with a single rudder? Its a bit of a minefield trying to find what I need as a short list. I'd also like it to be able to allow for an emergency tiller so in this situation how do I deactivate the hydraulic system?

Prefer to go for good quality kit where parts are easy to source etc etc.

Many thanks