Well just an update really, decided to give the car a quick balst and noticed that the clunkingz juddering seemed to be worse still.
Eventually the car was only going half throttle and if i upped the power a bit, it would just stagger along.
No magic blue smoke, but the motor doesnt want to turn at all now. If i spin the comm manually, and accelerate ( i.e bump start ) it will start but not rev very high.
I stripped the motor down to see how the rotor was ( i had suspicions on a shattered sintered magnet ) but it was fine
.
Tommorrow i shall test both the speedo and motor and find out what has gone wrong with it
Col.