Power pickup for smaller Bachmann wheels (side dump ore)

[rperego]

Any suggestions for getting power off the wheels of a Bachmann side dump ore car?

For 0-4-0 locos to avoid hic-ups over switches etc. I've been adding an LGB wheel set on the first car back but the ore cars I just got have smaller wheels.

A local hobby shops sells the special copper wire for fabricating a pickup - is there an easier solution than this?

TIA, Bob