pheasant plucker
Plastic
- Joined
- Oct 9, 2021
Hi all. Quick intro - I’m into customising vintage Vespas. Have done most work by hand until recently. Picked up a 1970s Emco bench lathe (as per the title). Had been used to turn wood by the guy I got it from.
Cleaned it up, re-greased as per the manual (finding something equivalent to the “ESSO Nebula EP No. 1 the manual specified was tricky), and have been slowly learning how to turn stuff.
Made a chuck key for a drill press (have a dividing head). Replaced the motor with and equivalent 0.5hp but 4 instead of single pole motor (same rpm). Made a back plate adaptor so I could mount an old 4-jaw the lathe came with. Fixed the old motor pulley with loose ID that was wobbling.
Main project I got the lathe for is to modify a flywheel. Trying to mount a starter ring gear (so I can electric start my 1964 custom Vespa).
I’ve been chasing a vibration that does seem a little intermittent. Unfortunately seems to be there more often than not. Was the reason I trued the motor pulley. Seemed to run smoothly straight after I had done that. But as soon as I turn something the vibration comes back, and then doesn’t seem to go away even when there is no load.
I can centre a piece, turn a radius, and everything is concentric. The backplate I made seems to work really well with the chuck centered (although it’s a 4 jaw so would get away with it).
The vibration seems to be like the work the motor is doing is oscillating - I think it may be rotational. The idler arm and even motor itself bounce up and down. I can’t feel any play/knocking or x/y/z movement in the chuck - the spindle bearing themselves sound and feel good.
There is some rotational play (backlash?) between the spindle pulley and the spindle itself. The manual states the pulley is mounted independently “to take care of belt thrust”. Unsure if this play is normal, and if not how to remove the spindle pulley to address it. Any help much appreciated.
Here is the lathe after I had replaced the motor and trued the motor pulley. Seems to be running ok.
https://youtu.be/guXHItLMI4U
Here is a video of me starting to rough cut the fins off a flywheel - but you can hear the vibration/oscillation.
https://youtu.be/4-IfjRobG_g
And here is the play I am seeing.
https://youtu.be/9ha4JcCK-r8
Cleaned it up, re-greased as per the manual (finding something equivalent to the “ESSO Nebula EP No. 1 the manual specified was tricky), and have been slowly learning how to turn stuff.
Made a chuck key for a drill press (have a dividing head). Replaced the motor with and equivalent 0.5hp but 4 instead of single pole motor (same rpm). Made a back plate adaptor so I could mount an old 4-jaw the lathe came with. Fixed the old motor pulley with loose ID that was wobbling.
Main project I got the lathe for is to modify a flywheel. Trying to mount a starter ring gear (so I can electric start my 1964 custom Vespa).
I’ve been chasing a vibration that does seem a little intermittent. Unfortunately seems to be there more often than not. Was the reason I trued the motor pulley. Seemed to run smoothly straight after I had done that. But as soon as I turn something the vibration comes back, and then doesn’t seem to go away even when there is no load.
I can centre a piece, turn a radius, and everything is concentric. The backplate I made seems to work really well with the chuck centered (although it’s a 4 jaw so would get away with it).
The vibration seems to be like the work the motor is doing is oscillating - I think it may be rotational. The idler arm and even motor itself bounce up and down. I can’t feel any play/knocking or x/y/z movement in the chuck - the spindle bearing themselves sound and feel good.
There is some rotational play (backlash?) between the spindle pulley and the spindle itself. The manual states the pulley is mounted independently “to take care of belt thrust”. Unsure if this play is normal, and if not how to remove the spindle pulley to address it. Any help much appreciated.
Here is the lathe after I had replaced the motor and trued the motor pulley. Seems to be running ok.
https://youtu.be/guXHItLMI4U
Here is a video of me starting to rough cut the fins off a flywheel - but you can hear the vibration/oscillation.
https://youtu.be/4-IfjRobG_g
And here is the play I am seeing.
https://youtu.be/9ha4JcCK-r8