jim hardy

your V/Ω would be upper bound.

Be aware you'll get somewhat less because the current in your armature tends to oppose the flux from your magnet.

I dont know how to calculate that. But this link suggests that these rare earth magnets' equivalent amp-turns per meter is quite substantial, well in the tens of thousands... with just 36 turns and modest current my intuition says you'll be okay.. but it is a guess.

http://www.kjmagnetics.com/specs.asp


in fact it's an interesting site, nice glossary and tables.....

http://www.kjmagnetics.com/

you know to keep air gap as small as possible and have a complete magnetic circuit.