Many thanks for that info Chris, excellent detective work
I suppose the lack of sticker/box should have been a pretty obvious give-away but it certainly didn't cross my mind.

When I got my Speed 900s they were £27 from Redbank Models and for a while they were the cheapest I could find. They've now gone up to £37 on there, but considering that's only £6 more than buying the Caldercraft motor from Westbourne, I think it's a small sacrifice for a much better performance.

The Redbank Models link for anyone looking for the Graupner motor: http://redbankmodels.co.uk/product_info ... cts_id=759