I completed a rotary drive installation this spring. Bought the small sprocket that attaches to the drive from raymarine
. Then I ordered the chain from a company specialised in chains. It was a UK standard chain mainly used in transmissions on motorcycles I think. Then I ordered the sprocket that go on the steering wheel
from the steering
system manufacturer ( in my case Lewmar/Whitlock). They had drawings for my boats system and knew exactly what I needed.
To know which raymarine sprocket size to order you count the number of full rotations on the steering wheel
from hardover to hardover. Then you can check a graph in the ray user manual what sprocket you need.
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