To: | "'shop-talk'" <shop-talk@autox.team.net> |
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Subject: | Re: [Shop-talk] tolerancing a interference or friction fit ???`` |
From: | "Randall" <tr3driver@ca.rr.com> |
Date: | Thu, 8 Apr 2010 17:08:30 -0700 |
> << Will it help to freeze the bushings before inserting them? >> Not gonna help, at least not enough, IMO. Coefficient of thermal expansion for steel is only .0000073 inch per inch per degree F. So assuming you can get a 600F differential in temperature (ie arms heated to 600F, bushing cooled to 0F), that's still only about a .005" improvement (.0000073 * 1.25 * 600). That still leaves .005" to .013" difference in diameters, which is still way too much. -- Randall _______________________________________________ Shop-talk@autox.team.net Donate: http://www.team.net/donate.html Suggested annual donation $12.96 Archive: http://www.team.net/archive Forums: http://www.team.net/forums |
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