That looks better than I thought it would james.
Cheers for the plug.
I ran my LRP (I know its not an HB's) the other week on 14.8v on a damp slippery astro track, and to be honest it wasn't that bad to drive.
I think if you race nitro and are used to 'blipping' the throttle, then it can be a problem to drive on that voltage. But being used to electric anyway I'm a lot smoother on the throttle, so the extra voltage wasn't a problem.
Marvin, love the Duracell scheme. Great idea. I always say that the simple schemes look the best.