CV/Universal Joints

[Art]

Originally Posted by RT Firefly

Greetings,
Mr. Art. Old school here...24X16 four blade wheels, strut c/w cutlass bearing, aprox 10'X1-3/4" shafts, conventional stuffing box c/w goretex, that hard rubber/plastic hockey puck piece Mr. manyboats alluded to (orange color), flanges aligned to within .003", velvet drive and then Amos and Andy the Lehmans. No vibrations....
Stuffing box usually runs luke warm. Works for me.....about 4gph @ 7-8 knots (1650 rpm) to the best of my VERY poor memory. Seems to be propped OK as I can run up to 2400 RPM WOT....I get scared @ WOT....WAAAYYYY to fast!!!!!!!
Oh, and mounts??? There's some rubber in there so soft mounts????

Mr. RT - Dat's Da Way! My conventional stuffers are goretex filled too! Simple Is as Simple Does!

[Nomad Willy]

Yes RT,
Frequently old school works best.
I mentioned the orange "shaft savers" as a disc tween the two flanges but for all practical purposes does not flex enough to reduce vibrations. Just used as a weak link to possibly become a sacrificial part.
You say "Oh, and mounts??? There's some rubber in there so soft mounts????".
Frequently to usually they aren't "soft". My mounts are fairly hard. I say that because I can't see the engine shake at low speeds to say it shakes 1/16" or so. Had a Yanmar engine that shook about 1/4 to 1/2" at an idle. That's soft. If you can't see or can hardly see engine movement at low speeds or w heavy load applied I'd say you have hard mounts despite the fact that they have rubber in the middle between the ends. No vibration and very little movement is right where you want to be.

[RT Firefly]

Greetings,
Mr. mb. I looked up "shaft savers" and they appear to be something that saves worn shafts. A sleeve affair if you will. Do you remember the trade name of the orange discs? I want to get 1 or 2 as spares if I ever suffer a failure.
Thanks...
Pee Ass: When I had them off to do the alignment I neglected to look for and record a trademark OR a size......CRAFT disease?????

[rochepoint]

One of these?

[RT Firefly]

Greetings,
Looks a lot like 'em. Thanks Mr. rochpoint. Holy Nelly, 6 minutes that's almost as fast as digesting Taco Bell!

[Nomad Willy]

Has anyone researched Thermoboat to see how their coupling works?
Ild like to know if it will function properly w/o the thrust bearing.
Usually when things seem too good to be true they are of course.

[RickB]

Originally Posted by manyboats

Has anyone researched Thermoboat to see how their coupling works?
Ild like to know if it will function properly w/o the thrust bearing.
Usually when things seem too good to be true they are of course.

Hope it works better than their website.

[Pineapple Girl]

Originally Posted by CPseudonym

Nor can I.

Mark! Where are you?

Hmm yeah he's usually at the ready w a photo or two. Hellllooooo?!?

[markpierce]

OK!!

The section of my propeller shaft between the universal joints came apart. Fortunately, it happened when I shifted to reverse coming into the home berth. Heard a "clunk" when the shaft dropped onto the hull. Fortunately, was going slow so I didn't damage the dock with the Coot's steel hull, and the shaft didn't thrash around since both ends came loose at the same time. Apparently, I was losing "c" clips retaining the U-joints' bearings for some time.



Where'd it go?



Placed shaft section next to remainder of shaft for this photo.



No real harm, all thanks to my guardian angel and christening of the Coot.



"... Today we come to name this lady Carquinez Coot, and send her to sea to be cared for, and to guard Mark and Perla. We ask the sailors of old and the mood of God that is the sea to accept Carquinez Coot as her name, to help her through her passages, and allow her to return with her crew safely."

[Marin]

On the other hand, maybe it was the christening that prompted the shaft to break......