i have for sale my Advanced Electronics black diamond v2.0 speed controller, used for 4 12th nationals and a couple of club days, i have to say this is the best speedo i have ever used, so simple, in 12th scale the speedo of choice is the tekin, i decided to go for the BD after using a tekin and was stick of messing with settings and updating software, none of this with the BD and was still as quick without all the hassle!
im only selling as i only do electric over the winter, my ic season is starting, so time to move some gear on, its in excellent condition, never abused
there still around the £230 mark new, looking for £140 inc insured postage, payment as gift if though paypal, cheers
