urethane, shore hardness, tensile/shear strength and my motor mounts
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From: Off THE 60, Between THE 605 and THE 57
urethane, shore hardness, tensile/shear strength and my motor mounts
my DA's motor mounts are pretty fubared. this is the DIY fix i've found for the problem: http://importnut.net/motormount.htm.
wondering if there's a superior urethane adhesive to 3M window weld, as suggested per article, that i could use to repair my motor mounts?
basically, i'm wondering about shear strength vs. tensile strength vs. shore hardness? Would epoxy be overkill? i've found that innovative is using 75A polyeurethane in their motor mounts (as well as a softer 60A). i'm curious as to what the shore hardness of window weld is, and moreover, the longevity of what appears to be a fairly soft urethane adhesive.
mcmaster has a few options, but no money shot (no durometer readings). also, concrete sealant has the right hardness, but in general very low tensile strengths (750 psi).
thx alot guys
wondering if there's a superior urethane adhesive to 3M window weld, as suggested per article, that i could use to repair my motor mounts?
basically, i'm wondering about shear strength vs. tensile strength vs. shore hardness? Would epoxy be overkill? i've found that innovative is using 75A polyeurethane in their motor mounts (as well as a softer 60A). i'm curious as to what the shore hardness of window weld is, and moreover, the longevity of what appears to be a fairly soft urethane adhesive.
mcmaster has a few options, but no money shot (no durometer readings). also, concrete sealant has the right hardness, but in general very low tensile strengths (750 psi).
thx alot guys
Member
Joined: Feb 2004
Posts: 2,451
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From: Pearl City, HI, USA
Re: urethane, shore hardness, tensile/shear strength and my motor mounts (bad-monkey)
Smooth-On are the products I like to use. They have urethanes up to Shore A95.
http://www.smooth-on.com/liqrubr.htm
The shear strength reduces as shore A hardness increases, simply because shear strength is measured in an elongation test. Don't worry: The shore 95 stuff is as hard as cutting boards when set.
http://www.smooth-on.com/liqrubr.htm
The shear strength reduces as shore A hardness increases, simply because shear strength is measured in an elongation test. Don't worry: The shore 95 stuff is as hard as cutting boards when set.
Member
Joined: Oct 2003
Posts: 1,864
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From: New Jersey, USA
Re: urethane, shore hardness, tensile/shear strength and my motor mounts (beepy)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beepy »</TD></TR><TR><TD CLASS="quote">Smooth-On are the products I like to use. They have urethanes up to Shore A95.
http://www.smooth-on.com/liqrubr.htm
The shear strength reduces as shore A hardness increases, simply because shear strength is measured in an elongation test. Don't worry: The shore 95 stuff is as hard as cutting boards when set.</TD></TR></TABLE>
Yea, the mount would stretch very far before they would actually break. I am willing to say if the tensile or shear was measured on the stock mounts, it would be crap as well.
http://www.smooth-on.com/liqrubr.htm
The shear strength reduces as shore A hardness increases, simply because shear strength is measured in an elongation test. Don't worry: The shore 95 stuff is as hard as cutting boards when set.</TD></TR></TABLE>
Yea, the mount would stretch very far before they would actually break. I am willing to say if the tensile or shear was measured on the stock mounts, it would be crap as well.
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