- 1. Polyurethane bushings (score: 1)
- Author: Gene_Carter@avid.com
- Date: Tue, 2 Feb 1999 11:26:09 -0500
- I have a friend with a racing Super 7 who is looking for polyurethane suspension bushings. In particular, his car seems to chew up the A-frame rubber bushings that attach at the differential. He does
- /html/chapman-era/1999-02/msg00001.html (7,695 bytes)
- 2. Re: Polyurethane bushings (score: 1)
- Author: Keith Gustafson <gusmach@shore.net>
- Date: Tue, 2 Feb 1999 11:50:33 -0500
- MSC Supply has urethane bar stock. It can be machined, but it is not pretty. They'll send you a catalog, and they take credit cards. Their phone number is 1 800 645 7270. If you want, I can look up t
- /html/chapman-era/1999-02/msg00002.html (8,599 bytes)
- 3. Re: Polyurethane bushings (score: 1)
- Author: cak@dimebank.com (Chris Kantarjiev)
- Date: Tue, 2 Feb 1999 09:19:06 -0800
- Try Ted Schumacher at TS Imported to see if he pours urethane for this application, or Chris Witor (in the UK) to see if he's got something.
- /html/chapman-era/1999-02/msg00003.html (7,568 bytes)
- 4. Re: Polyurethane bushings (score: 1)
- Author: cak@dimebank.com (Chris Kantarjiev)
- Date: Tue, 2 Feb 1999 09:20:33 -0800
- If you're going to machine something, I'd recommend black delrin rather than urethane... also available from places like McMaster-Carr and MSC. I typically take a stock rubber bushing, remove the cen
- /html/chapman-era/1999-02/msg00004.html (7,649 bytes)
- 5. Re: Polyurethane bushings (score: 1)
- Author: cak@dimebank.com (Chris Kantarjiev)
- Date: Tue, 2 Feb 1999 09:23:29 -0800
- (Reuse the steel sleeve, that is. You want the bolt to clamp the steel in place, and the delrin to slide on the sleeve; I tend to lubricate on assembly with silicone grease, and often modify the whol
- /html/chapman-era/1999-02/msg00005.html (7,754 bytes)
- 6. RE: Polyurethane bushings (score: 1)
- Author: Dave Billings <bilcoh@home.com>
- Date: Tue, 2 Feb 1999 09:40:04 -0800
- At one time, Delrin was in favor. Just like Keith is saying, you buy it in bar stock and machine it on a lathe. I did this on my Elan 15 years ago and they work great. The ride is obviously a little
- /html/chapman-era/1999-02/msg00006.html (7,939 bytes)
- 7. polyurethane bushings (score: 1)
- Author: Keith Gustafson <gusmach@shore.net>
- Date: Tue, 2 Feb 1999 12:57:53 -0500
- I would not suggest delrin in this application. It is too rigid and would not allow the range of motion needed on the rear a frame. Keith
- /html/chapman-era/1999-02/msg00007.html (7,485 bytes)
- 8. Re: polyurethane bushings (score: 1)
- Author: "David H Putscher" <David.H.Putscher@usa.dupont.com>
- Date: Tue, 2 Feb 1999 15:37:36 -0500
- Delrin is a trade name for toughened nylon, made by the Dupont Co. Its primary benefit is the ability to somewhat self lubricate. It is somewhat harder (Rockwell) than crosslinked polyurethane but mu
- /html/chapman-era/1999-02/msg00008.html (8,070 bytes)
- 9. Re: Polyurethane bushings (score: 1)
- Author: Derek Harling <derek.lola@sympatico.ca>
- Date: Tue, 02 Feb 1999 20:15:51 -0500
- Can Teflon [PTFE] be used in these sort of applications? I have about 35" left after having to buy 36" minimum length! Thx for any advice . . . Derek
- /html/chapman-era/1999-02/msg00009.html (8,217 bytes)
- 10. Re: Polyurethane bushings (score: 1)
- Author: cak@dimebank.com (Chris Kantarjiev)
- Date: Tue, 2 Feb 1999 17:21:30 -0800
- Teflon is pretty good stuff. Not as hard as delrin, but harder/firmer than rubber. The thing to beware is that it has a relatively low melting point (I'm remembering about 250 degF) and emits toxic f
- /html/chapman-era/1999-02/msg00010.html (7,603 bytes)
- 11. Re: Polyurethane bushings (score: 1)
- Author: "Tim Engel" <tengel@isd.net>
- Date: Tue, 2 Feb 1999 21:00:43 -0600
- Do not put a rigid or semi-rigid bushing in the center/apex pivot of a 7's rear A-frame. Preferably not in any of the 7's rear suspension pivots, but certainly not at the apex where it attaches to th
- /html/chapman-era/1999-02/msg00012.html (14,368 bytes)
- 12. Re: Polyurethane bushings (score: 1)
- Author: "Tim Engel" <tengel@isd.net>
- Date: Tue, 2 Feb 1999 21:57:18 -0600
- Ooops, can't type. That should read... ", but is now the preferred material..." "Now" became "not" through some... stray... brain fart. Sorry, Tim
- /html/chapman-era/1999-02/msg00014.html (7,666 bytes)
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