Hello.
New to robot building, and r/c in general. Looking at building a basic featherweight, a la Haynes manual (got to be easier than fixing a knackered old car where everything is rusted and seized, right?!). No intention of entering competition, just getting to grips with the basics for now.

I’m just starting to get materials and components together but have a question over drills as drive motors. Ive bought 12v Argos value drills, but note in the Haynes photos (and elsewhere on internet) that 14.4v drills have been used. Obviously I realise the hammer functionality is of no use, but the 14.4v have 1.3Ah batteries whereas the 12v have only 800mAh. The 12v seem very popular among robot builders - so just after opinion on whether to stick with them, or return and get the 14.4v instead. Is the battery capacity increase worth it?

Thanks for taking the time to read this.
Cheers,
Tony.