billmac
Stainless
- Joined
- Oct 17, 2004
- Location
- Lancashire, UK
These are some photos of fitting a tachometer to a Smart and Brown 1024, along with some other wiring changes to convert it to a VFD drive etc. The photos were requested in the S&B tooling thread.
This is the optical sensor arrangement:
and this is how it is attached to the back of the headstock
This is an early photo - I later increased the number of black/white sectors to give better resolution at lower spindle speeds.
This is the inside of the control box containing the tachometer display, spindle current meter, variable speed pot and selector switch to change between the original pre-selected spindle speeds and continuously variable.
This is the lathe in finished state
I have more photos showing the wiring for the electrical enclosure and the wiring of the original speed selector drum switch etc if anyone is interested.
This is the optical sensor arrangement:
and this is how it is attached to the back of the headstock
This is an early photo - I later increased the number of black/white sectors to give better resolution at lower spindle speeds.
This is the inside of the control box containing the tachometer display, spindle current meter, variable speed pot and selector switch to change between the original pre-selected spindle speeds and continuously variable.
This is the lathe in finished state
I have more photos showing the wiring for the electrical enclosure and the wiring of the original speed selector drum switch etc if anyone is interested.