I fitted a BLF D80 with an MTN-17DDm driver running Bistro UI, using no additional parts.
The original driver PCB is 19mm, so the new 17mm PCB wouldn’t sit nicely on the driver shelf.
I drilled out the retaining ring slightly to allow room for the driver’s components and soldered the driver to the cell’s side.
The result ain’t pretty, but no one can tell while the light is running!
Moving the driver means less space for a cell. A 65mm flat-top HG2 cell now extends 3mm past the tail end of a “long” D80 tube. This setup works fine, but a “short” tube or protected cell will not.
With Bistro UI (my favorite!) and no more PWM, this D80 will get lots more use now!