[nixiebunny]

Thanks for posting the picture to remind us all that safety is not to be taken lightly.

I'd be worried about any wheel tread that's not designed for high speed use. The riveted ones are prime suspects, but I also suspect that the foam wheels may disintegrate. Granted, foam is safer than rivets, but still...

We have been preparing to run a shooter with the 8 inch AndyMark pneumatic wheelchair tires. I noticed that they are highly unbalanced due to the valve stem, so I'll be taking some time to correct that before firing it up. I'm not too worried about the tires themselves holding up to a couple thousand RPM, as they appear to use standard pneumatic tire construction. I am worried about someone's hand getting in the mechanism.

We'll also work on ensuring that nobody's in the line of spinning stuff.