Monday, November 02, 2015

Engine trial fit

So I moved the engine from the cockpit to the new foundations to see how it's going to fit. I'm pleased with the fit, but it's clear that there was a discrepancy between the technical drawings/measurements and the actual engine. The rear mounts are about a 1/2" farther aft than the mockup. I don't think that will be an issue, but the rear part of the foundation has minimal thickness due to the angle, and I'd really like to get at least 1" of thread into the foundations at the aftermost mounting hole. Hopefully I'll be able to do that.

A peek through the stern tube revealed the center of the output coupling, so I'm hoping that alignment is  pretty good. Since my stern tube will be permanently fixed in place with the aid of the prop shaft coupled to the engine, alignment shouldn't be too much of an issue.

The only issue that will need correction - at this point, at least - is a tight spot between two cooling hoses and the foundations. The hoses rub the foundations and will quickly chafe through with the engine's vibration, so I'm going to have to grind out a portion of the foundations port and starboard to give the hoses more clearance. I'm not too keen on messing up my fiberglassing job, but I guess there's no other choice.

With regard to building the engine box, I was hoping that the engine would sit far enough aft that I'd be able to slope the front of the engine compartment aft a bit. I'm not sure just how much slope I'll be able to get at this point, but it's not looking like much. Aesthetically and practically, it would be good to have a gentle slope for the ladder to follow and to free up room in the "galley."

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