Stuart No 4 Steam Engine

[TomG]

(12-22-2018, 12:48 PM)f350ca Wrote:

(12-22-2018, 10:04 AM)TomG Wrote: Getting close Greg.

The method I use for rings is to make them oversize, split them, and compress them on a two piece stepped mandrel for a final cut on the diameter. That way they are perfectly round when compressed in the bore.

Tom

I was wrong to assume these would spring out, had cut them to size. I ran them dry for a few seconds with a drill, can see the wear pattern isn't perfect.How did you make the stepped mandrel? That sounds like a much beter way to do it.

Just a piece of stock with a step on one end (longer than the width of the ring) and cap that slips over the step with a center screw for clamping. A hose clamp works well to compress the ring before tightening the screw.

Tom