Have tested all of these motors! Sensor wires are all in tact.
6.5R - Can is tatty £20 + postage
5.5 - Has a gold ring instead of the purple one. This modification should shave off 1 second a lap! £25 + postage
4.5- Used once £20 + postage
5.5- spares or repairs? Rotor feels tight. £10 + postage
7.5- Again, spares or repairs, rotor feels tight! £10 + postage
Ben