I think I need to go to Specsavers because......

[oldtom]

......I can't see a motor anywhere on the bike:




Tom

 

[flecc]

There's others bigger than that, have a scroll down on this link to see some including yours, and motor assist very rarely used.
.

 

[trex]

would it be sensible to leave the battery and controller inside the trailer and have only the motor on the bike?
I am thinking of keeping a small generator on the trailer.