Help identify this dampener?

[autumnbreeze27]

The latest update:
Bought a coupler and a drive saver, and think I've got it close enough.

Transmission guy came by this morning and says "Yep, looks like you're ready for the yard now"

So now we've got to haul the boat, they're going to pull the shaft, send it to have the coupler mated to it, then reinstall and align the engine.

A powerboater friend says I should have the engine aligned in the water, not on the hard. Do you think that's necessary with an overbuilt full keel boat?

There goes the backup dinghy fund.

[Cheechako]

Yes align in the water, or at least check it when you get back in even if you aligned out of the water.
Take a close look at the shaft when It's pulled (in the enclosed portion)... for corrosion.

[autumnbreeze27]

Talked to a buddy who said "Do you have the shaft secured?" D'OH! Could just imagine me in the dinghy... my wife in the boat... not noticing the water until it was coming out the companionway...

So now we may just try and do it in the slip. Are there any tricks to be done with the drip-less shaft, or can we just have a diver pull the prop and then pull the shaft out?

We don't need to do anything with the rudder except turn it to the side to pull the shaft.

[Cheechako]

Not sure I like pulling the shaft in the water! Put a hose clamp on the shaft next to t he stuffing box when you tow the boat for haulout so it cant move aft.

[GrahamHO]

[QUOTE=autumnbreeze27;1890860


A powerboater friend says I should have the engine aligned in the water, not on the hard. Do you think that's necessary with an overbuilt full keel boat?

There goes the backup dinghy fund.[/QUOTE]

I would have the alignment set up on the hard and then check with a feeler gauge when back in the water. As I see it would then just be slipping the coupling bolts out and going around with feeler.

Your friend is basically correct. All boats bend. They bend up in the middle on the hard and down in the middle floating.

It's a difference thing. Not one bend but one each way.

[JPA Cate]

AutumnBreeze,

Check the engine mounts while you're out. If they've gone all squidgy, they'll need replacing. Then, with that possible source of misalignment out of the way, proceed, and it's okay to do a preliminary fit on the hard. BUT, once launched, be sure to use a dial indicator gauge to measure the runout. It is necessary to fine tune it in the water, 'cause that's where the boat spends most of her time, and, as mentioned above, they do do the "banana" once relaunched.

Good luck with it.

Ann

P.S., sorry about the dinghy.

[autumnbreeze27]

Originally Posted by Ann T. Cate

AutumnBreeze,

Check the engine mounts while you're out. If they've gone all squidgy, they'll need replacing. Then, with that possible source of misalignment out of the way, proceed, and it's okay to do a preliminary fit on the hard. BUT, once launched, be sure to use a dial indicator gauge to measure the runout. It is necessary to fine tune it in the water, 'cause that's where the boat spends most of her time, and, as mentioned above, they do do the "banana" once relaunched.

Good luck with it.

Ann

P.S., sorry about the dinghy.

Thanks for all the info. We're going to have them do the cutlass bearing while we're out as well. Our prop is in an aperture, would it be worth getting it balanced/tuned? I can't believe it's ever hit anything

[GrahamHO]

Originally Posted by autumnbreeze27

Thanks for all the info. We're going to have them do the cutlass bearing while we're out as well. Our prop is in an aperture, would it be worth getting it balanced/tuned? I can't believe it's ever hit anything

I can't see the need for rebalancing it unless it has been reworked for some reason. It is unlikely to rotate over 1000 rpm and probably less. A good polish could be worthwhile.

Herreshof wrote something like: one barnacle on a propellor is like 1,000 barnacles on the hull because the wetted area of a hull is 1,000 as great as a propellor and the propellor is driving the boat forward with the same force as the hull is holding it back