[CA] [CA11] 100 series autopilot vs SG

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Harry,

As was suggested by the Raymarine staff, the maximum size mechanical linear drive which would have been specified for use with a Type 100 autopilot course computer would have been a Type 1 Mechanical Linear Drive. Additionally, the Type 1 Mechanical Linear Drive would have been at the upper limit of it capacity when factoring the loaded weight of the vessel (1.2 x 20,000 lbs = 24,000 lbs ... the upper limit of a Type 1 Mechanical Linear Drive). Use a mechanical drive unit and course computer which are that the limits of their application under repeated heavy conditions may result in premature failure of the drive unit and/or course computer. While satisfactory moderate sailing conditions, it would have been recommended that a Type 2 Mechanical Linear Drive and heavier autopilot course computer/ACU be considered for blue water / heavy weather applications.

Q1. Is the S3 sufficiently better than the Series 100 that I should swap the units?
A1. Yes. The S3 will also support use of a Type 2 Mechanical Linear Drive. Please additionally note that a Type 100 autopilot course computer may be used with a wheel drive. Accordingly, you may want to consider moving the S3 autopilot course computer and its control head to the new boat and move the Type 100 and its control head to the old boat.