Built a inline Brass and Lego chassis using a small N class 22 K@12 volt motor. Top end is good, but the small motors lack the grunt for adequate braking. To remedy this I installed an adjustable friction plate on the rear axle that allows you to dial in some mechanical braking.( basically two small washers with a small spring between them. Tighten the compression on the spring increases the rolling resistance of the chassis.


Printed the decals on my laser printer and vacuum formed the glass.

