Eliminate the "relay" 32E (3-brush) generator on a rigid Knuckle or Pan. Run a 61A 6V generator (Cycle Electric® has a 1/4" screw mount model) and mount a reliable Voltage Regulator in the '58-64 frame spot ! - and still use the OEM style oil filter (by using the OEM style '58-64 filter-to-tank plumbing.)
All of that is possible by using a Vintage Twin
#1936, external oil filter bracket. Looks identical to the original '58-64 bracket, but a different shape. Raw metal. You paint or plate.
contact me at
kperry@vintagetwin.com/ (We have none left in stock at present.)
I'm asking amazon.com about selling them on line.
No returns, and made on a onesy-twosy basis, they won't be cheap until i find a jobber.
If you click on Vintage Twin (top left) and choose "public profile" from the drop-down menu, the oil filter and bracket are shown installed. The voltage regulator looks like it belongs there doesn't it? That's it's position on a '58-64, now tucked into a '55-57 frame.
This one bracket is the keystone to installing an OE style filter on your Knuck.
GM® makes the voltage regulators for V-Twin®.