Hmm, I may attempt to gear it down somehow then without using too much weight up, or failing that I'll have a look round to try and find some other motors that'd be more suitable around the house... I've got some, but they've got plastic gears so they might not be ideal!

Does look pretty complicated, but I guess that's where the challenge is! Got plenty of spare material, so it's not too big a deal if I mess it up a bit the first few attempts...