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Post by steamer5 on May 31, 2023 21:36:17 GMT
Hi Triton,
Rather than a form tool as such, use a button/ round insert. Greenwood tools, now no longer trading, did a 5mm one ( they are now a bit harder to find) it’s only 0.5 bigger than you 5/64.
I machined 16 mild steel wheels to David Hudson’s method using one. Worked great!
Cheers Kerrin
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triton
Involved Member
Building a Southern Railway 5" Schools Loco
Posts: 53
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Post by triton on Jun 4, 2023 18:01:40 GMT
Excellent advice. Thanks for all the help.
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triton
Involved Member
Building a Southern Railway 5" Schools Loco
Posts: 53
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Post by triton on Jun 4, 2023 18:05:47 GMT
Any advice on chuck speeds for 7" od driver and 3.5" od bogie wheels?
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Post by ettingtonliam on Jun 5, 2023 13:13:41 GMT
For cast iron I usually reckon on 50 feet per minute, so say 25rpm for the 7" and 50 rpm for the 3.5". Thats quite old time turning speeds, but for our relatively light lathes, and loco wheels tending to chatter anyway, probably about right. Modern tipped tooling probably do better, but those speeds are a good starting point.
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triton
Involved Member
Building a Southern Railway 5" Schools Loco
Posts: 53
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Post by triton on Jun 30, 2023 18:13:24 GMT
Again...Thanks for all the excellent help.
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Post by brucevoelkerding on Jul 1, 2023 18:35:35 GMT
have a look at "Blondihacks" latest YouTube Video "Making Train Wheels - Pennsylvania A3 Switcher, Part 15". She is machining her Wheels the same as I described. youtu.be/mRB8vnjrbsA |
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triton
Involved Member
Building a Southern Railway 5" Schools Loco
Posts: 53
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Post by triton on Oct 13, 2023 18:14:14 GMT
Thank you very much for the great advice.
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Post by Boadicea on Oct 14, 2023 9:20:49 GMT
Keith Appleton version here |
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triton
Involved Member
Building a Southern Railway 5" Schools Loco
Posts: 53
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Post by triton on Nov 4, 2023 17:57:38 GMT
Thank you for all the input. This has really helped me get a better sense of how to machine wheels without mucking up an expensive set of castings.
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