[jmke]

Currently a 8.5T ezrun esc and sensorless motor which has a broken bearing, very noisy but it runs still quickly; I can give full tilt on the straights and reach top speed; so it's geared OK and after 5min motor is 70-80°C; if the ball bearing was not broken it would temp lower.
I've a Speed Passion 7.5T on order to get with Xezrun;

Thanks for the input Darren; you also suggest putting weights in front? With the mid motor layout of the SCX-60 I do find it quite balanced front<>back; have 5grams on the front bumper now; front tyres Proline Sniper; but to be swapped to Schumacher Spikes (need to cut the outer row of spikes?)