4.2.2 Inboard cylinder selection flowchart NOTICE!
If assistance is needed at any point contact Dometic technical service at 604.248.3858
START
Rudder torque known from trusted source (naval architect)?
YES
YES
Is a power steering system required?
NO
NO
Dometic Marine does not support rudder calculations for sailboats. Please see notice below.
Refer to page 8-16 of this document to find the output force and torque of each cylinder.
YES
Is the request for a sailboat?
NO
Is the system replacing an existing hydraulic steering system?
YES
NO
Is a SeaStar mechanical cable steering system that performed well being replaced?
Is the performance of the existing system satisfactory and are the system specifications known?
NO
NO
Fill out rudder torque data sheet on page 18-19 of this document and send it to Dometic Marine technical service at: seastar@dometic.com
YES
YES
Use a single HC5313-3 cylinder with a similar amount of turns from hard over to hard over as the mechanical system. Refer to page 8-17 of this document to select the appropriate helm displacement.
YES
Is a power steering system required?
NO
SAILBOAT NOTICE Dometic Marine is unable to support rudder calculations for sailboats. They are outside of our area of expertise and the calculations we use to determine the expected rudder torque are not suited for sailboat applications. Please contact a naval architect or complete applicable rudder torque calculations to find the expected maximum torque about the rudder post during operation. Page 8-16 of this document can then be used to select an appropriate system for your application.
Select a system with the equivalent output torque and number of turns from hard over to hard over. Refer to page 8-16 of this document to find the output force and torque of each cylinder. Refer to page 8-17 of this document to select the appropriate helm displacement.
Figure 4-5.
4-4
EN
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