I found this on Jeff Lutkus’ web site
Then I started looking for other threads discussing tandem unicycles & found this:
http://www.unicyclist.com/forums/showthread.php?s=&threadid=27604&highlight=tandem+unicycle
I bet there are more out there too, do we have any pairs of unicyclists that have tried to ride such a contraption?
Here’s a couple more pictures of the one on Jeff’s web site:
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