Shear on dampener plate bolts
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=8569
Printed Date: September-27-2024 at 6:24pm
Topic: Shear on dampener plate bolts
Posted By: 8122pbrainard
Subject: Shear on dampener plate bolts
Date Posted: September-29-2007 at 11:36am
Doc, Lets say we have a engine that produces 300 ft. lbs. This would be the same as putting a fish scale on the end of a 1 foot long arm bolted to the crank shaft and reading 300 lbs. If you shortened the arm to 6" then the fish scale will read 600 lbs. This is just like a torque wrench where in. lbs. and foot lbs. are a 12 to 1 ratio. So, if the mounting holes in a dampener plate are at a 6" radius, that 300 lbs will then be 600. Divide the 600 by 3 bolts and each bolt will see a shear of 200 lbs. Not much on each bolt. I sure wouldn't do it but even a stove bolt would handle that.
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/diaries/details.asp?ID=1622" rel="nofollow -
54 Atom
/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique
64 X55 Dunphy
Keep it original, Pete
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Replies:
Posted By: boat dr
Date Posted: September-29-2007 at 11:47am
Thanks Pete,have learned to stop and ask .Just did not feel safe with the set up that the Sachs plate affords you.
I understand that those three bolts would be more than enough to support the rated torque,BUT....
My concern was more the balance , and had i disturbed the underlying fabric of nature."The best laid plans, sometimes end in disaster" Have had this situation call at my door before.Thank you again..............
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boat dr
/diaries/details.asp?ID=4631 - 1949 Dart
/diaries/details.asp?ID=1533 - 1964 American Skier
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Posted By: eric lavine
Date Posted: September-29-2007 at 11:52am
you get thet tranny in Doc or are you standing there looking at it?
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"the things you own will start to own you"
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Posted By: 8122pbrainard
Date Posted: September-29-2007 at 12:17pm
Doc, I know you use the torque wrench all the time and understand it. I just tried to explain it in a way that everyone may understand it.
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/diaries/details.asp?ID=1622" rel="nofollow -
54 Atom
/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique
64 X55 Dunphy
Keep it original, Pete
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Posted By: boat dr
Date Posted: September-29-2007 at 12:26pm
Pete , thanks again for breaking things down into bite size pieces for this dumb redneck to digest........
Am in the latter stage of R&R this AM.All that is left is replacing the cooler and piping to tie it all in.
Then just reverse tear down mode.Pete you the MAN...........
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boat dr
/diaries/details.asp?ID=4631 - 1949 Dart
/diaries/details.asp?ID=1533 - 1964 American Skier
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Posted By: eric lavine
Date Posted: September-30-2007 at 12:28pm
He caught that the pump was on bacerds too, even before it went into the boat...
I told the doc my trick when someone doesnt align thier trans or they run it low on oil and they want warranty (i can tell) I'll send the trans back with the pump on backwards oops Bacerds
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"the things you own will start to own you"
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