Brian,
Sounds like a good day for extra rail meat and a temporary preventer. The rail meat is to slowly help level the boat as it picks up the load. They might be preloaded at the mast and asked to step slowly towards the rail as the load is increased. If the boat were to go past level you'd get a powerful gybe, so a preventer or even a pair of lines leading back to the winches to the engine is never free to swing. If you've seen it done then you already know the boom doesn't do any lifting, just the halyard positioned along the boom by something like vang gear for a beefy outhaul. Take pictures and make sure the rail meet knows to move slowly. I've had a 225 pounder jump on while my mast was at a 45 being raised. The spectators ran but what might have looked like skinny lines to the casual observer was vinyl coated SS cable so it just rolled with the boat without shifting. Phil Agur <http://www.catalina27.org/public_pages/profile270.htm> s/v Wing Tip C270 LE #184 MMSI 366901790 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Brian Sent: Sunday, January 17, 2010 7:47 PM To: [email protected] Subject: [IC27A] Re: Atomic 4 replaced with M20 - 5416 Thanks Chuck, I have drawn the two engines in AutoCad and have to now add boat dimensions to view the required adaption to widen the 11.5" to 16" keeping the same shaft alignment. Lots of time to complete and I was hoping someone had done it already. I had fun when I picked up the engine from the San Juan 34. The owner told me to take anything I wanted from the fiberglass corpse laying in a field. Not much was left and I didn't have much time. Now that I'm home I'm wishing I had looked for more stuff. While its cold out I plan on doing good inspection and testing on the M20 before I stick it in. Lots more to work out....exhaust, prop size, fuel filter and return line, control cables, shut-off, on and on..... Anybody ever use the boom to hoist an engine in? I've seen it done to remove one but not sure how much the boat would lean when picking the 365 pounds m20 from the side. thanks again for the comments Chuck. Brian. --- In ic...@yahoogroups. <mailto:IC27A%40yahoogroups.com> com, "CHARLES BARR" <vzes2...@...> wrote: > > Hi Brian, > I replaced my A4 with a Yanmar 2GM 14 years ago and have enjoyed dependable operation since. > First measured height, width, depth, length from shaft center line and shaft coupling to be sure it would fit > in the available space. Built a frame to locate engine mounts, shaft half-coupling, length and width of the > 2GM and control locations with dimensions from Yanmar drawings. Strung a wire from the cutlass bearing > thru the stuffing box to a secure fitting in the cabin to represent the shaft center line and positioned the frame > on this wire to determine engine bed dimensions, exhaust configuration, control cable layout, etc. > > I was lucky. The engine bed height was increased by 1.5 inches, the shaft coupled to the engine with out > changing shaft location or length, and a waterlift muffler and 2 inch exhaust hoses were a comfortable fit. > I installed the engine control panel on a piece of plexiglas in the same location as the old panel and the > old choke button is now the engine shutoff. A Racor fuel filter was added to the fuel line > > This has worked well for 14 years although the water injection elbow in the exhaust was replaced last spring. > > I wish you well on your project. > > Chuck Barr > Meerschaum > > > > [Non-text portions of this message have been removed] > [Non-text portions of this message have been removed]
