Have been adjusting the motor mount for a good fit, which took a while. Sorted out the light and RPM display stand. Need to make a housing for the RPM display on the 3D printer.
Made a pin and a retaining socket for the gearbox change arm. Not sure how close to the original design it is. Had to get a 3/8" BSF intermediate and bottom tap for the retainer from Tracy tools in the UK (they are great). Now I need to find or make a spring for it, needs to be 6mm or 7/64" diameter. Got the plate on too finally used those U screws. Really need to clean up the knurling on that knob and get it chromed.
Working on the back gears. I need 2 more 30 tooth gears but nearly everything else is there. Blanks are made ready for gear cutting also a mandrel. Just need to make a brass guide for the broach to cut the key way.
Cut the gears today. Just need to broach the key ways. Next up 40 tooth gear. The only problem is that I need a 45 or 9 hole indexing plate for the 90:1 rotary table to cut the 40 tooth gear. I am also wanting to cut a 76 tooth gear for another project so I need a 38 hole index as well. Fortunately I can use the indexing plates I have to make the new plate.
Made a new index plate today 38 and 45 hole, there is room for more hole patterns but will leave that till I know what I need. It might need to be 77 or something odd like that. Now I can move on to the 40 tooth gear for the Cromwell.
Am cutting metal on the lathe now and have been setting up the tail stock. However am having problems with the spindle jamming. To release I have to back off this locking threaded collar.
OK so I am having trouble adjusting my spindle bearings and end play. How to do it? I am going to try and answer my own question. Hopefully those viewing this will chime in with their ideas as well.
Here is a cross section of the head, spindle nose to the right.
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