Hi Trikin....that's a nice idea to make the Bob into an e-pusher...I also have a Bob trailer and did that as well with an old brushed motor I have, which worked very well on the bike I tried it on. I would definitely consider that again for cross-continent scale touring, with the extra weight on the pusher, but around town I prefer not to have a trailer for most of my routine applications, just using an Axiom Dutch shopper double pannier, with an Arkel Tailpack. I found that unless the Bob was loaded the traction suffered a bit on uphills, which is where there is a more torque produced on the e-wheel. I'll put up a couple of snaps of the bike in a couple of days. I guess I'm spoiled (or old) - I only like to ride electric now, while pedalling, at higher speeds...I think on a cross country trip I might probably take the original trike wheel along on the trailer, although any old MTB 9 speed wheel would do in a pinch.