Thanks Don, I've thought about brazing it together but I've never brazed anything.I'm probably going about it wrong in my mind, but, I would be tempted to braze it back together, line bore it oversize, sleeve the two sides, then line bore back to spec. Although, if you can get a bearing that is a little bigger on the od, that might work as well.
If all that fails, then it's back to fabricating another....
This is the perfect opportunity to change all that.Thanks Don, I've thought about brazing it together but I've never brazed anything.
I have thought about making a 3D print to make a casting.You know. If you have a well equipped metal shop, welder, oxy-accet., wood working tools and a 3D printer then the solution is of course to 3D print the whole thing. Bearings included...
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I love the idea of having Keith Rucker fix this.If you need to take dimensions there is easily enough of the broken side to get highly accurate dimensions for a new build, if that is in your wheelhouse. Brazing isn't that difficult to learn, and some practice on semi cast iron or malleable iron first would help a lot. that being said, taking all the dimensions and failing doesn't put you in a worse state than now.
OR -- you could take a leaf from @PeterT playbook (he had Keith Fenner fix his lathe, for a fee), and see if Keith Rucker would braze/repair it for you. His charges are runoured to be in the 'very reasonable' range. He also has the skill and equipment to assure the resulting bores are still in line and accurate. It would make a great video, but he's also chasing a bunch of projects right now. He is very good at brazing, and if done properly, it is stronger than the original part.
As to construction of a new part, the stresses on these components aren't mighty. This could be done as a no-weld bolt-together fabrication out of 1/2" cold rolled steel. Alignment can be done on the bearing seats by using your Colchester as a line bore to do it all in one setup after assembly.
- I'll check my assembled one to see what the clearance issues are.
The idea was *similar* to having Fenner do Peters shaft, by having Rucker braze your assembly - if he would do it. Rucker is an expert at brazing, especially compared to Fenner and others.I love the idea of having Keith Fenner fix this. Or did you mean Keith Rucker?
That would be a heck of a lot easier than trying to braze all those pieces back together.He did give me some advice though which was to just make a new bearing holder from cast iron and then braze that onto the part.
I haven't measured them but they look parallel.Are the bearing bores parallel to the pivot? I've seen instances where a shaft is canted off from the pivot for gear alignment.
It remains to be seen if I do any betterThey probably are parallel, img0439 looks like the pivot pin hole almost missed the extra thickness in the casting and that made me wonder.