That's what I was thinking, but I wish I knew the prop details. Hopefully I can determine this on haulout. It has dual 65 amp alternators, an oversized raw water pump, and also drives a 30gpm watermaker, so it can get loaded up when the WM is running. The previous owner diverted some of the RW pump output to the watermaker, a design which I'm not keen on, but I probably won't use the WM much. It is a very complex setup, so I will be looking to simplify it as I sort through it all. The exhaust manifold is fresh water cooled, and there are two RW/FW heat exchangers to deal with the heat load. A scary amount of hoses, valves and gauges! But the engine runs great, and I am very familiar with the design, having worked on VW diesels for 30 years.
On Sun, Apr 21, 2019 at 12:41 PM Jerome Tauber via CnC-List < cnc-list@cnc-list.com> wrote: > 40 hp on that boat is a giant engine. Original had 30hp. Should drive it > to hull speed with little effort. Jerry > > Sent from my iPhone > > On Apr 21, 2019, at 11:32 AM, Shawn Wright via CnC-List < > cnc-list@cnc-list.com> wrote: > > 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 > shawngwri...@gmail.com > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Shawn Wright shawngwri...@gmail.com
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