Posted by Glen of Idaho [108.162.245.223] on Friday, January 06, 2017 at 15:31:05 :
In Reply to: Blew a safety ring off today posted by Glen of Idaho [108.162.245.223] on Friday, January 06, 2017 at 00:04:52 :
My wifes koi pond froze and we had to get the pipe thawed to refill from the water that is frozen in her waterfall. A guy has to have his priorities in order.
I Am mounting 235/85r16 tires on the original 1941 1/2 ton wheels. I have 14 wheels that are in various stages of abuse from rust and tire hammers but the bulk of them are on vehicles or under snow at the upper place.
I found 5 wheels and 4 safety rings that looked good and started sandblasting them. I ended up with 3 that were fairly straight and not cracked. They were primed and painted. The safety rings really take a beating so I started with the worst one as a test. I mounted the tire and seated the outside tire bead inside of the rim step and placed the safety ring in place with no interference from the tire. The ring fit loose and sloppy. I placed the mounted wheel under my drive on vehicle hoist with a truck on it and attached a lock on tire chuck to the valve stem with no schrader valve. 30 feet away I opened the air valve behind a regulator set at 40 PSI and watched. It blew off at less than 20 PSI.
There was no damage to the tube or flap.
What I have discovered from this is every tire man I have watched will press the tire bead into place with the safety ring by beating it with a tire hammer and that may or may not work out. But will give them some advantage if the ring is bent because they use the tire bead to hold the ring seated.
I spent a bunch of time with a shop press, large vice and heavy rubber dead blow hammer getting the safety rings concentric and laying flat. Two other important thing is completely removing any helix and getting the cast even all of the way around as well as having the ends of the ring come together with some force.
The rings I have are soft and ductile and easy to shape leading me to believe they are probably mild steel.
After doing the ring straightening I tried them on the wheels I had ready and checked the fit. The rings should be concentric to the wheel having the ends meet and still be loose enough to turn. One down four to go.
I have never seen a tire man put that much into it.
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