Best choice is 61mm but 74mm will work too.jwl said:Fivemega - I read the link you have above about the 5 C-cells. Just to make sure I am not missing something, which extension would I need to use to run 4 D-cells?
Also, do you still have any WA01183 bulbs?
Thanks.
I do have following bulbs for 4xNiMH cells:
4 volt axial bulb $18
WA1183 $9
WA1319 $6