Best I could find were these:
Wrist: Demon D3O Skate
Elbow: Knox Cross Elbow Guards
Knee: Arcteryx Leaf Knee Caps
@wheelrich great. I'll take a look at that fender, thanks
Thanks for all the feedback, it put my mind at rest. Really fascinating to hear how the sound relates to the motor mechanics. Cheers!
@skyman88 extremely helpful, thanks! You now have me reconsidering float plates...
@skyman88 Agree! straight lines are not only boring, but they lead to increased fatigue on your legs and your feet.