canolman Joined Sep 25, 2013 Messages 369 Location canolbarth cymru Jan 31, 2017 #1 Crank gear out of my spares box! Looks like it's been tapped with a welder? Scrap? Attachments IMG_20170131_160807.jpg 84.1 KB
Rainerio Joined Jun 5, 2013 Messages 1,196 Location San Francisco CA. USA Jan 31, 2017 #2 Looking at the picture it looks to Me like pitting (rust) maybe galling?
S screnshaw400 Joined Jan 13, 2012 Messages 84 Location S.E. Michigan Jan 31, 2017 #3 Looks like poor castings to me
Taffy Joined Nov 20, 2001 Messages 17,028 Location Ely, England Feb 1, 2017 #4 it's not the casting. if you look, you can see 'singhed' marks on the sideface of the gear. so it is probably galling. and the gear looks worn on the outside so it must have fretted quite badly for a long time. Taffy
it's not the casting. if you look, you can see 'singhed' marks on the sideface of the gear. so it is probably galling. and the gear looks worn on the outside so it must have fretted quite badly for a long time. Taffy