Well, I might as well give away my big secret for the good of the group!Â
I'm starting to sound like a damn socialist...

In all seriousness, I stumbled up this company while researching DC generators. This is the direction that I would like to go as long as they're not overly expensive. I had also been looking at using a forklift motor, but this would be a better solution if it would work.
I'm envisioning a bracket that would attach to the Lister bearing cover using longer bolts, that would be larger in diameter than the flywheel (kind of like a heavy duty flywheel cover) that the generator would be bolted to.Â
Direct drive utopia...
I have been planning on contacting the CEO to inquire what they would charge to wind one that would run at lower RPM but have been too busy with other projects.
Alternator has 12 Poles....
Here are the alternator specs (worth the read):
http://polarpowerinc.com/products/alternator/3500&6250alternator.htmAnd here is their main website that has good info regarding why to use a DC generator. Lots of good info buried on this site:
http://polarpowerinc.com/products/generators/index.htmAny company that sells something THIS cool, obviously has their thinking cap on:
http://polarpowerinc.com/products/generators/6-10kwdiesel.htmThey also do solar including manufacturing their own cells!
http://polarpowerinc.com/products/solar_ele/complete_solar_sys_1800.htmFinally, check out this cool micro co-generation unit!!!!!
http://polarpowerinc.com/products/generators/cogenset.htmAnd no, I have no relation to them. I simply find the company and their products compelling...
Enjoy!
Steve Â