Thanks guys. Yeah the motor looks a bit loose (especially at the bit when the axe head gets stuck) but it's solidly bolted into the machine; the flex is coming from the polycarb baseplate. Hopefully it's strong enough for the job, but with enough flex so as to absorb the forces when the arm hits.

Definitely up for an axe-off (get Little Hitter and Asgard in there too), got more chance of the axe bot still running after an event than I do with Drumroll (a drum-off will take place one of these days!)

Just uploaded a couple more photos, just to better show the interior with the motor fitted:





It's absolutely mahoosive in relation to all the other components. The drive is a little bit squiffy at the moment though; not sure if that's to do with the 2.2kg of motor being off-centered or the fact that I've got two different speedos controlling it (had to switch one of the drive Victors onto the scooter motor and use the 25A Botbitz from the old axe drill motor for the drive). Will probably fit TZ85s for all three channels soon so will see what happens when that's done and everything's properly bolted back together again.