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Friday February 27, 2015

February 27, 2015 in Uncategorized

ACBS (Toronto Chapter) Winter Workshop: (Part III)
Engine Talk:
Matt Faribrass, marine mechanic extraordinaire, kindly brought an operational four cylinder engine to the workshop – and ran it!  Matt spoke about various means of assessing an engine’s condition, including a compression test and a visual piston chamber inspection for rust. Matt emphasized the importance of paying close attention to the engine peripherals,  including the carb(‘s) fuel pump, and electrical system.  An engine “rebuild”  does not necessarily mean that the peripherals have been inspected. A faulty fuel pump diaphragm for example,, can lead to gasoline leakage through the engine and a potential explosion.. As usual, an ounce of prevention….
Propeller Talk
Amanda Holloway, of United Propeller in Orillia, Ontario, commented, when asked, that four blade propellers generally offer smoother acceleration, while three bladed props are generally a little faster. A pitch of 13-13, she explained, is common in older boats. (the two “thirteens” refer to the diameter of the prop and the distance traveled to complete one full rotation). Amanda also noted that while many props are bronze (with manganese) a superior propeller will be composed of Nibral (a combination of nickel, bronze and aluminum).
Adhesive Talk
James Osler, a Muskoka restorer, talked about the value of Dolfinite 2005M a bedding compound, unfortunately only available in the United States. (It can be purchased there and brought across the border to Canada.)
For scarfing planks, James suggests using Sikaflex 291 or 3M Marine. For applications requiring flexibility, James utilizes #M 4200 or 3M5200

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