Document DGEmOnMOE1m4rxwxRkwZE2vnd

is/ .vi 0 ;v V. November 2, 1979 Corcoraiion friction Products Croup ? O. Box 3250 \v*ncfc<**tftr. Va. 2260: .;*J* ;o?f?7-, Mr. C.R. Wuellner Staff Engineer - Drum Brakes Delco Moraine Division General Motors Corporation 1520 Wisconsin Blvd. Dayton, Ohio 45401 Dear Mr. Wuellner: As a further follow-up to the material already sent you, we are sending you the following. United Airlines DCA 016 6231-3451. 25 Each 3029-7A1 Primary This material represents a minor addition of graphite which appears to show the desired lower preburnish friction, based on our Chase test and plotting results as you do. 25 Each 38-27E X209 Secondary This material represents no formula change but a slight reduction in cure which also seems to have lowered the preburnish friction as plotted and hopefully should reduce the preburnish effectiveness. Regards, VJG:sh cc: Mr. G.L. Buyck Cadillac V/f Garthwaite Mgr. Product Chemistry bcc: L.E. Bretz R.L. Cutler/R.E. Nelson A.D. Indelicato J.C. Van Marcke SCI 02766