Argh!
First the bad news: we may have been too ambitious when filming the obstacle course. PiDrogen has taken a significant tumble and is now in “dry dock”. I can’t tell you what happened right now (you’ll have to wait to see the out take at the end of our obstacle course video at the competition), but it was from a substantial height!
Now the good(ish) news: we rarely dismantle PiDrogen’s back axle, it’s too fiddly. But one of the motors is stuck on full power so there’s no choice. So here’s a rather rare picture inside it…

To be honest, I’m amazed there wasn’t more damage.