Boiler work underway this week, but not much to show off yet.
It's been a little while since last working on the Tram, but the running gear is coming together now. Evenings are just as busy as the days!
The sprockets I was after aren't available so I am in the process of making my own. Basically a hub and laser cut teeth.
There's always something to learn, the sprocket teeth being laser cut still needed a fair clean up with a file. The profile of the teeth was correct on the CAD file but the laser cut still made it too tight for the chain to fit on properly, so out came the chainsaw file for some cleanups. Something was amiss between the transition of radii on the root to tooth, the laser cut put a little step where they transition. All that added up to 200+ teeth to fettle!
Chainsaw files are excellent, I use them all the time. I'm not sure of they are made from different steel but they do brilliant work to castings and any other tough skinned surfaces without losing an edge.
Happy steaming!
No comments:
Post a Comment
Leave us a comment!