Granville lathe leadscrew change wheel

[JACK SIDEBOTHAMParticipant @jacksidebotham67303]

can anyone produce a replacment change wheel for my Granville lathe???,l dont posses the tools to do it myself,l am currently trying to source the wheel l need but maybe there is a helpful soul out there that would be willing to cut one for me??,l would,of course,cover the costs incurred,l can provide a good colour picture of what l need together with the needed dimensions,thanks.

[cogdobblerParticipant @cogdobbler]

What DP are the Granville gears? You might be able to use gears off a more common lathe that used the same DP. Eg Myford 20 DP. Drummond 14 DP.  And I forget Boxford’s.

[BazyleParticipant @bazyle]

Granville are 20 DP according to Tony
https://www.lathes.co.uk/granville/index.html

So worth checking how close Myford centre hole and keyway are. You should be able to adapt.

For the record, Boxford are 18DP.

[John HinkleyParticipant @johnhinkley26699]

Bazyle beat me to it!  If you get completely stuck, pm me the details and I can print out a couple in either PLA – carbon fibre or glass fibre reinforced filament, with your choice of pressure angle, or both.

John

 

[Martin ConnellyParticipant @martinconnelly55370]

A look at HPC website HPCgears.com technical section will help you to identify what gear form you have. At this stage I would not worry about pressure angle or material, you will not be putting a lot of power through a change gear in a home workshop. You may find HPC have a suitable part as well.

Martin C

[cogdobblerParticipant @cogdobbler]

The Myford gears have a 5/8″ bore with a 1/8″ keyway. Should be adaptable. Plenty on that auction site, but they are not giving them away of course.

[cogdobbler]

On cogdobbler Said:

Plenty on that auction site…

It could be sensible to find out the required tooth count before running around all the cheese shops only to find they just sold the last one yesterday.

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