cyberbellum wrote:
> *That's really cool! I don't think it can be very strong, but it's
> cool nonetheless.
>
> Tim *
I think its problem is that it is a bit too bent. If I do another I may
keep the wheel in one plane but build it so it is not perpendicular to
the axle.
That wheel is also slightly egg shaped, but not as egg shaped as
originally intended because it was so hard to bend it that way. In an
attempt to bend the rim into an egg shape I screwed two blocks of wood
onto it & then tried to en-egg it. In the end the only way I could get
enough force on it was to wedge it against a drain cover & get Paula to
drive the car into it. Even then the effect was not quite as expected,
it tended to taco rather than stay in one plane & become egg shaped.
Then when it had become a bit egg shaped I found that the rim had
splayed out so much that it wouldn’t hold the tyre, so I had to squeeze
it back in again with a clamp & that reduced the egg shapedness of it.
I also had an idea of making the rim kinked to have 6 lobes rather than
the normal 4 you seem to get with a natural taco, but I wasn’t strong
enough to make it do that.
So, the final wheel is slightly egg shaped, quite a bit oval, twisted at
one end more than the other (similar to a normal taco but not exactly
symmetrical) & slightly eccentric. All the spokes are tight within
reason & the wheel is rigid enough to be ridden by slim adults on flat
surfaces. The hub is the widest one we could find. Roger & Miarke had
to modify the frame for it to have enough width to accept the wheel
without it rubbing on the sides..
/\/\
--
mike.hinson - Unicyclist since Nov 2000
"I have to overcome a 'stress hill' when tightening the nuts, but once
installed they sit in a 'stress valley'. "
--Klaas Bil
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