That sounds great, Jerry. When I replaced my gears with "Bucks Gears," Peterson Engineering Corp. sent a small plastic bag of their super-duper grease, whose name I don't know. But it was red. Is the new stuff red also? Thanks, Joe --- On Tue, 6/2/09, Jerry Foote <jfoote@scopecraft.com> wrote: From: Jerry Foote <jfoote@scopecraft.com> Subject: [Utah-astronomy] Worm Gear lumbication To: utah-astronomy@mailman.xmission.com Date: Tuesday, June 2, 2009, 4:55 PM As some of you may know, I am refurbishing an old Celestron 22" for the University of Nevada at Reno. As part of that work I am fitting new worm gears on both axes. The RA gear is a custom 21" 360 tooth gear with a 14.5" gear on Dec. I have never been happy with the Lubriplate #105 I have used for years on worm gears. Over time it breaks down with the lithium portion getting thick and the oil portion getting gummy. So I went looking for a new lubricant. My test setup was the 21" gear with moderate spring pressure for the worm engagement. With the Lubriplate the average of 5 measurements of torque on the worm was 43 oz-in. With the new lubricant it was 22 oz-in. The new lubricant is Super Lube Synthetic Grease with Syncolon (PTFE). It has an operating temp range of -45 F to +450 F. I bought a tube of Item # 21030 (3 oz.) on the Internet. How this grease behaves down the road I don't know but by cutting the worm torque almost in half I'm willing to see. Jerry Foote ScopeCraft, Inc. 4175 E. Red Cliffs Dr. Kanab, UT 84741 435-899-1255 jfoote@scopecraft.com _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com