Slide way seizure repair

You can buy gunmetal in square bar but its hard to find, so cutting from round is often easier if the part is not too large. Bronze block is available but again easier to come by round.

Machine the sliding face and then soft solder to something that you can hold in the vice, mill the recess, melt the solder and rub on some wet n dry to remove solder.

J

Cheers Jason thanks for your help much appreciated

mark

If at some time you need a steel on steel bearing, one component should be hardened/case hardened, by doing this the two parts are in a different state, remember that in most cases you should not run two surfaces of like metal together as a bearing, the exception is cast iron.

The slippers could be made of cast iron.

Ian S C

Hi

I have been looking into fitting slipper, I can just about fit them with some adjustment, but critically what Is the minimum thickness that I can get away with? As there's very little metal to mill out of crosshead

mark

you could probably go down to 1/32" so 0.75mm or rather than make loose ones they could be soft soldered onto the cross head and then machined down to maybe half that.

J

Think 1/32" is possible may even alittle more with recess, so that should be ok

Mark

Hi

I'm thinking of shaving alittle off slide to allow more depth of slipper

It would be possible to use bronze shim stock, if you can find someone who will supply small amounts. I used it to "bush" the yoke on a Scotch Yoke drive for the displacer of one of my hot air engines, the yoke was aluminium, and the crank pin mild steel.

Ian S C

Hi Ian

yea iv thought about that just I'd have to find away of mounting that on crosshead I think the recess way is the way Togo, don't fancy soldering a thin plate, would be afraid it would fall out! And this3" scale Burrell would likely do that I guess!

Hi

Is phosphor bronze suitable? Or just plain bronze?

mark

Should be OK though the SA660 is a bit nicer to work with

J

Mark, a pair of little slippers could be made, a little turn up at each end, maybe reinforced with a short piece of wire soldered to the turn up. Shim bronze is available down to .005", it's usually springy.

Ian S C