Do not listen to anyone who says that doing this would be pointless or a
waste. You KNOW that all of them would line up to try riding your 12"
Onza, if you had one. So if you've got the hub and the parts and the
time and the will, go for it. Practicality isn't one of the highest
priorities in this business anyway... I agree that a regular cotterless
hub would probably be a more logical choice; finding the other
components to build a trials-capable uni will be a challenge. There
aren't very many 12" rims around - none that I've seen, anyway - that
will be noncrappy enough to justify such a beefy hub, or have enough
spoke-holes to carry it. And, the selection of 12" tires is not very
wide. You'll need a bunch of custom parts for this thing, most
obviously the cranks, which are almost certainly not going to be
available in the 3" or shorter length that you'll want. Probably
spokes, too.
My 16" MaxDaddy had custom 3" cranks on it, which were about right for
its size. They were ordinary cotterless ones of course, cut down from
bicycle cranks.
--
weeble
All brontosauruses are thin at one end, much MUCH
thicker in the middle, and then thin again at the
far end. That is the theory that I have and which
is mine, and what it is too. - Ms. Anne Elk
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