|Peter Newton 3||12/11/2019 23:10:42|
|1 forum posts|
Hello. I'm a new member and am at present attempting the restoration of a Ragan Little John lathe. A 6" chuck came with the lathe - with the wrong backplate, which has a 1.75" 'V' form thread and not the square (6 tpi) the Raglan needs. Someone mentioned a member on the forum enquiring about a backplate (1.75" diam with BSF form?). Does anyone know of the member?
regards. Peter Newton
|not done it yet||13/11/2019 09:12:33|
|3746 forum posts|
I very much doubt that a lathe with 6tpi Whitworth or Unified thread would have the same register dimensions. Possible, I suppose, if you are looking to sell. Check out the wanted section on the forum.
Bore out and sleeve it, if there is sufficient metal to do so. Then recut with a square thread.
I see second hand Raglan back plates selling for around £60 delivered, on epay. They are easy enough to make - and one would be confident there is sufficient metal to safely cut another spigot.
There are threads, for making spindle nose protectors, on :
|Pete Rimmer||13/11/2019 12:34:05|
|535 forum posts|
If you want to make a Raglan backplate/faceplate by re-purposing one from another lathe you'll need to find on with a sufficiently wide boss yet an existing thread of 1.5" or less to allow enough material to cut the 6tpi square thread.
A Boxford one would suffice, if the rear boss is wide enough to accommodate the Raglan thread.
|old mart||13/11/2019 19:33:09|
|959 forum posts|
Smart & Brown use a 1 3/4" X 8 W spindle thread, with a 1 3/4" diameter register.
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