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post #13 of Old 09-05-2010
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Join Date: Aug 2010
Location: San Juan Island, WA
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I-28 repower

The Islander 28 with a brown dodger would likely have been our boat, Polaris. We go to Canoe Cove frequently since it is the closest yard to our house. We did consider the Beta Marine engine, but decided to go with Canoe Cove to do the installation (we had considerable work done there previously and were most impressed with the jobs they have done for us) and they are a Yanmar dealer. The prop now on the boat is a Campbell Sailor 3-blade prop, 3/4 X 12d X 11p. Vic prop calculated that the Yanmar 3YM20 should optimally have a 15" prop, but there was not sufficient clearance for this diameter if the prop would be in the same location and moving the prop towards the stern by elongating the shaft might put too much strain on the cutlass bearing due to the small diameter of the shaft. There was some discussion of iincreasing the diameter of the shaft to one 1" so the prop could be moved to the stern, but this seemed to be quite a bit of extra work. They did,however, replace the stock 3/4" shaft with one made of Aquamet 22, a terribly strong and corrosion resistant alloy.
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