Well, this is the large model association, so everything we do is bigger than the norm, and there are good trainers, but do you mean the more standard club trainer? These days, at club size, most are built in a box, just need assembling, in the large size, there is the sky series, available in, i think, 2 sizes,
http://www.slecuk.com/balsa-wood/Sky-12 ... RW003.htmlIn club size, there is the superb Mascot trainer, eaisly the best out there
http://www.dbsportandscale.com/mascot-6506-p.aspThen these days, will it be powered with an Internal combustion engine, or a very viable electric motor set up? Electric has come a long way,
There are various out of the box trainers,
http://www.sussex-model-centre.co.uk/sh ... IC+Engines