I was given a 60's vintage Coats Tireman 3 star manual tire changer. It's in working order, except the tire iron, or mount/demount bar is missing. It has a hand operated upper and lower bead breaker. I ran across another somewhat older unit, probably from the 50's, that has a bar about 4' long, one end is sort of spoon shaped and the other, I guess the mounting end, has two ~3" wheels and a 3/8" diameter roller to kinda skate the tire on I guess.
It looks like I could make a copy of the demount/mount bar pretty easily, but I'm not sure if part of the bar is supposed to go through the square hole in the swivel at the top of the center post. The older machine I saw, as well as the Coat's current model 310 manual changer don't have this feature.
I called Coats and they were no help. A replacement bar for the new manual changer is $180, so I don't think that's in the cards, and I think I want to cover the ends with UHMW sleeves so I can use it on some of my aluminum rims.
When I used to race my GT2 car in the late 90's the Goodyear and Hoosier tire trucks were still using manual machines at the track and the tire guys could change low profile radial slick in a couple of minutes...with some experience of course.
Anyone here ever use a similar machine?