9.2c sling locations

[Nanticoke58]

I have a 1977 9.2c that I purchased this spring. It was on the hard when I bought it, when the yard was preparing to lift it they asked me about the location for the slings. The sling forward of the keel was a no brainer but the one aft of the keel caused me concern. It appeared that the proper location was up tight to the aft end of the keel, but this put about half the width of the sling on top of the shaft. Is this right? does anyone know the proper location or have any pics? Thanks in advance for your help.

 

[BobM]

Here is a shot of Triple Play in a travel lift. As the keel is part of the hull this is safe to do. I don't know how my current yard does it, but I suspect the same because I had to clean marks off the hull today and they were definitely forward of the shaft.

 

[Nanticoke58]

Thanks, I hope I did not damage the shaft when they put me in the water.

 

[BobM]

Fingers crossed for you. Do yourself a favor and check the shaft log for cracks where it exits the hull. If they torqued it good you might see some evidence of damage. The problem you will have is that you have no history with the boat. What is it powered by? A 1977 might have an A4, but if it is a 2 cyl diesel they vibrate a lot anyway.

At the advice of a surveyor and hired Captain I did the whole shaft, coupling, alignment thing if you need some advice next year. When I bought my boat because the surveyor said the alignment through the cutless bearing was off and the bearing needed replacing. First thing I did when I got the boat. What a PITA. It was three hours from my house, during a hot stretch and the damn prop wouldn't come off for love or money. I broke two prop pullers. The PO said it was fine and I should have waited a season for sure.

My firm advice is to run it an see how it behaves. Don't go looking for trouble. If the strap was less than six inches out on the shaft it is probably fine. Just print out the picture I sent you and have them do it that way in the future.

 

[BobM]

By the way, if you hear a ringing sound when you run it at low RPM don't panic. I had this happen and in hindsight I am convinced it was an air bubble trapped in the shaft (I had changed the packing and hadn't adjusted it to drip properly yet). Verify the shaft is dripping appropriately. If not adjust it and let the air out

Mine was so tight it was dripping and I thought it was fine...then realized it was actually all the wax in the packing melting and dripping out! I adjusted it on the fly with the engine running because the damn delivery Captain refused to stop or even slow down for a minute. I put a wrench on it and the damn nut spun CLEAN off and water started coming in on me. Than God I had one of those newfangled sliding monkey wrenches because I was able to easily slide it back onto the spinning nut and get it back on. The Captain was lucky I didn't brain him with that damn wrench when I returned to the cockpit. Turned out he knew absolutely NOTHING about sailboat engines/transmissions.

Same guy misread the tide charts and we ended up going through the Cape Cod canal against the tide. That is a huge no-no as we had a current of 3.5 knots against us and could only do 5.5 knots normally for a net speed of 2 knots. If it wasn't a Sunday we couldn't have gotten away with it. As it was, it was late afternoon when we started and it took us about 2.5 hours to make a 1 hour trip. We tied up at the other end at about 8pm. That was our longest day. We had started out in Stongington CT at 8am. No wind to speak of that whole day.

 

[Swampyankee]

Trinity Heart was launched today. The yard had a hard time finding a place to put the aft sling. The finally decided to put it under the keel, just like Triple Play and it seemed to work well.
Anywhere else would either put a load on the prop shaft or be too far aft and risk swinging the boat forward, pushing the furling system into the travel-lift.

 

[Nanticoke58]

Thanks for the great info, I will print out the picture. The strap was only a couple of inches on the shaft. The boat has an A4.

 

[twice-baked]

This was mine, the marina owner, Andre warned me before I got to the hoist. They lifted from the keel enough to view the hill before lifting to trailer.

 

[sailcruiser]

My suggestion is to mark locations with electrical tape. Proper lifting should be done at the bulkheads but sometimes it's easier said than done. Our launch we had the strap sliding back to try and take out the sail drive and raw water strainer and yes it was tied off. I'm responsible for damages so I've tried to learn what the correct procedure should be. We struggle with a cradle so it gets doubly complicated at times. SC