Hello, We had a good sea trial yesterday on the C&C 35-2 we are planning to purchase. Although winds were a bit light, we were able to test the main, 90% jib on inner furler, and 150% on outer furler, and all worked well. As my wife did most of the steering, I didn't get a chance to test the engine except at fairly low speeds. As a result, I am planning to take another trial next week to see if I can get a feel for how the boat is propped, and to check for any unusual vibration from the long prop shaft which is installed. The owner and previous owner who did the work both assure me there is no vibration, but since I am paying for a haulout and have 2 weeks on the hard to do work, I want to ensure everything is attended to.
Unfortunately, there is no tach on the engine (VW 1.6D) so I will need to gauge engine speed by ear, unless I can locate a diesel tach. The VW factory tachs use a signal from the alternator, but I am not sure if either of the boats two alternators have this signal output. What I am curious about is what boat speed other 35-2 owners get from their engines at various RPMs, and from what prop/transmission ratio combination? The boat has a Hurth 100 gearbox with a 2.5:1 ratio (not confirmed, but quoted on old survey), but prop size is unknown. What should I expect to see under power as I increase the engine speed, ie: at what point should the boat begin to hit a wall where increasing engine power has little effect on boat speed? With the hull speed around 7.35 knots, I'm guessing over 6 knots will require a lot more power? The engine runs very well, with a newly rebuilt injection pump, and no smoke from cold start; rated at 40hp or so. Thanks -- Shawn Wright [email protected]
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