This is my ZZ1 setup for my old boy Mars -- it's actually got my newest girl in there at the moment, but I don't have pics of her setup
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The wheel is the 27cm Savic Orbital wheel, which is as far as I know, the only wheel larger than eight inches in diameter that fits in the ZZ1 (aside from the twelve inch flying saucer) -- every other large 28-30cm wheel I know of is too tall for the ZZ1, the Orbital just about fits in with half a cm to spare.