Since this happened to you twice, is there a possibility the holes are elongated from running loose?
Rivets should fit snug in the holes and I agree with Scrap regarding welding steel and cast.
Steel has more tensile strength than cast. Steel gives, cast cracks.
Jim
back tire hub problem
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Re: back tire hub problem
I wouldn't weld the sprocket either, unless I was in the middle of Bumfuk Egypt and that was my only choice to get home.
If your holes are elongated, you can rotate the sprocket and drill new holes half way between the old ones. There is a method to that to insure accuracy, if you go that route.
Also, now is a good time to examine the sprocket for wear and replace it if need be.
If you decide to stick with what you've got and use bolts, drill those suckers out to 1/4 inch and use hardened bolts. Even Grade 5 will be fine.
The screws you used aren't even Grade 2, they are mild steel.
If your holes are elongated, you can rotate the sprocket and drill new holes half way between the old ones. There is a method to that to insure accuracy, if you go that route.
Also, now is a good time to examine the sprocket for wear and replace it if need be.
If you decide to stick with what you've got and use bolts, drill those suckers out to 1/4 inch and use hardened bolts. Even Grade 5 will be fine.
The screws you used aren't even Grade 2, they are mild steel.
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Re: back tire hub problem
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