[James Tonthat]

We used them on our shooter, after whipping together a quick prototype. We were super impressed with their performance. Rebound time on the shot was a problem but the consistency was awesome. For us, they expanded to about 5.5" from a 4" wheel at 5100 rpms. We bought the 1" bore version and bought a 6061 aluminum tube from McMaster that was 1" OD and 1/2" ID, cleaned up the bore a bit, broached it, sanded some flats for the set screws to seat on and they were ready for use. They do eventually show wear though, I think we can put in about 800 shots or so before they start degrading.

Edit: Also thanks to Justin Foss from 2168 for helping us out with this. With the data he gave us, we were full court shooting on the first revision.