Poluyurethane Bushings
Thread Starter
Safety Car
Joined: May 2004
Posts: 4,469
Likes: 275
From: Naples FL
Poluyurethane Bushings
After all of my issues with poly bushings I decided to measure different bushings with my durometer. The results vary depending on which company made the bushing. The yellow one is what Energy Suspension created for me after I destroyed the red one. Just for a comparison I checked my Michelin street tires. They measured 75 on this scale.
That's a huge difference in hardness. Keep in mind that both the yellow and red ones are both from Energy Suspension. They can make the bushings in different hardness. Vette Brakes only has the one size fits all.
Richard Newton
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That's a huge difference in hardness. Keep in mind that both the yellow and red ones are both from Energy Suspension. They can make the bushings in different hardness. Vette Brakes only has the one size fits all.
Richard Newton
Melting Slicks
Joined: Jul 2008
Posts: 2,269
Likes: 142
From: Ottawa Ontario
After all of my issues with poly bushings I decided to measure different bushings with my durometer. The results vary depending on which company made the bushing. The yellow one is what Energy Suspension created for me after I destroyed the red one. Just for a comparison I checked my Michelin street tires. They measured 75 on this scale.
That's a huge difference in hardness. Keep in mind that both the yellow and red ones are both from Energy Suspension. They can make the bushings in different hardness. Vette Brakes only has the one size fits all.
Richard Newton
Facebook
That's a huge difference in hardness. Keep in mind that both the yellow and red ones are both from Energy Suspension. They can make the bushings in different hardness. Vette Brakes only has the one size fits all.
Richard Newton
Drifting
Joined: Mar 2009
Posts: 1,253
Likes: 4
From: East Wenatchee (2hours from n e where) WA
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Drifting
Joined: Aug 2006
Posts: 1,326
Likes: 18
From: Los Angeles California
I know they're not suspension bushings, but do you think they make those little rubber bushings inside the driver / passenger door hinges out of polyurethane? Mine have gotten old and the doors flap shut on me whenever I'm trying to get out. 
Le Mans Master
Joined: Dec 2002
Posts: 5,270
Likes: 3
From: Seattle Area WA
I saw your post later in AutoX/RR that would be great to know what their delrin tests out at.
I did find this:
Teflon AF
Hardness (Rockwell) - M85, R115
Hardness (Shore D) - 83
Hardness (Shore A) - OOR I would assume
http://www.plasticsintl.com/datashee...lrin_100AF.pdf
Looks like the yellow polyurethane would be about a 50 vs delrin at 85 on the D scale.
I did find this:
Teflon AF
Hardness (Rockwell) - M85, R115
Hardness (Shore D) - 83
Hardness (Shore A) - OOR I would assume
http://www.plasticsintl.com/datashee...lrin_100AF.pdf
Looks like the yellow polyurethane would be about a 50 vs delrin at 85 on the D scale.