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Old 12-31-2014, 06:02 AM   #41
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Originally Posted by sunchaser View Post
I use 2" zincs just forward of my dripless shaft seals to keep shafts from backing out "if." To use a rubber sleeve for similar purpose seems cheap and silly. Yup, wonder what else is questionable.

BTW it looks like steel hull under rubber is already rusting away.
Another great idea. Thanks.
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Old 01-02-2015, 01:08 AM   #42
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maybe its just there to cover a stress crack in the shaft. Whatever it is take it off and have a look see. The suspense is killing me
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Old 01-02-2015, 03:43 AM   #43
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My guess, based on on the situation on our boat after we got it, is that the rubber hose may have been installed to be able to use a pipe wrench to turn the shaft for alignment adjustment without scarring the shaft. If the cutless bearings have tightened up over time, which they had on our boat, the shaft(s) may be impossible to turn by hand alone. Using a pipe wrench to get leverage solves the problem but can scar the shaft(s) pretty badly. Hence the rubber sleeve. I tend to agree with RT that the white stripe may be part of the hose marking, not necessarily a timing mark.
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Old 01-08-2015, 03:10 AM   #44
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Quote:
Originally Posted by eyschulman View Post
maybe its just there to cover a stress crack in the shaft. Whatever it is take it off and have a look see. The suspense is killing me


What he said


Stubones99, you gotta get back intouch with the owner and sort this out.
I'm hangin' here, like watching a cheap mid-afternoon soap oprah

WILL THE PATCH OF RUBBER'S PURPOSE EVER BE REVEALED?
IS IT HIDING SOMETHING?
IS IT USED FOR SOMETHING?
TUNE IN TOMORROW FOR YOUR ENGINE-ROOM MACGYVER UPDATE !!
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Old 01-08-2015, 03:47 AM   #45
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Originally Posted by nemier View Post
What he said


Stubones99, you gotta get back intouch with the owner and sort this out.
I'm hangin' here, like watching a cheap mid-afternoon soap oprah

WILL THE PATCH OF RUBBER'S PURPOSE EVER BE REVEALED?
IS IT HIDING SOMETHING?
IS IT USED FOR SOMETHING?
TUNE IN TOMORROW FOR YOUR ENGINE-ROOM MACGYVER UPDATE !!


I eagerly clicked on this thread, in breathless anticipation of the mystery revealed, instead...
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Old 01-11-2015, 08:22 PM   #46
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We got a winner! It looks like Sunchaser won this round...

According to the owner, it is a rotational sensor for the ABT TRAC stabilizer.

That's a big load off my mind since I was almost 99% sure it was a rube goldburg engineered coupling...

We'll see the boat this week I hope!

More later!
Stu
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Old 01-12-2015, 12:14 AM   #47
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So it's a reflective strip to measure the RPM of the shaft? Gee, I wish I had thought of that.
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Old 01-12-2015, 12:50 AM   #48
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Dang that was torture waiting for someone to loosen the stupid clamps and see the shaft was ok!!!

Good guess on the timing strip. I would have used a piece of tach tape!!
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Old 01-12-2015, 10:35 AM   #49
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Dang that was torture waiting for someone to loosen the stupid clamps and see the shaft was ok!!!

Good guess on the timing strip. I would have used a piece of tach tape!!
Yeah tach tape can work. But it's not uncommon to see a piece of black hose or plastic with the reflective strips glued on it clamped to a shaft.
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Old 01-12-2015, 11:17 AM   #50
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Gaaaah!
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Old 01-13-2015, 03:07 PM   #51
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I do not like the way the clamps are left with a long tail, maybe dangerous and tacky, but I can see the reasoning.

Sometimes a reflective piece of tape on a shiny surface may not work as well as it should. The sensor may not be able to differentiate reliably between one shiny surface and another even though they are not the same.
It may need a black, dulled matte , or at least a dark background for the pick up unit to be able to SEE it reliably and not miss counts.

Maybe they were having trouble with just the tape on the shaft.

If you get the boat, that could be cleaned up by at least using more suitable clamps or H.D. black Tyraps. Maybe sanding, thoroughly cleaning the area, painting it matte black and then sticking a piece of reflective tape on. Going with the paint may require repainting periodically if the paint wears away.
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