rob.northcott said:I don't agree with that. If the wheel is symmetrical (i.e. not dished
and the hub is centred between the bearings) then fitting it the other
way round in the frame would make no difference (i.e. the tyre would
still be closer to the same fork leg). If the wheel is off-centre
(dished or offset bearings) then it would be closer to the opposite
fork leg when fitted backwards in the frame.
If reversing the frame makes a difference, it proves the wheelset isn't
symmetrical. I agree that it isn't a way to diagnose the exact problem
but it would show whether the problem was with the wheel or the frame.
Obviously this is assuming the wheel runs true - if it's wobbly and
untrue then it proves nothing.
Rob
This approach is true only if the legs are the same length. If all
three conditions exist, then the symptoms are not determined by
reversing the wheel. This is why, when I build, rebuild, repair, or
true wheels, I use a dishing tool extensively.
If one is interested in getting a decent unicycle solution at low cost,
then simply messing around with shims can accomplish a lot and usually
get the rider going quickly and reliably. If one is interested in
having a nearly perfect wheel alignment (there are good reasons for
this, including efficiency and the use of brakes), then one must
carefully and precisely control the various wheel and frame dimensions
using external measurement and alignment devices.
--
U-Turn
Weep in the dojo... laugh on the battlefield.
'LiveWire Unicycles' (http://www.livewireunicycles.com)
'Strongest Coker Wheel in the World'
(http://www.unicyclist.com/gallery/albup39)
'29er Tire Study' (http://u-turn.unicyclist.com/29erTireStudy/)
'New York Unicycle Club' (http://www.newyorkunicycle.com)
-- Dave Stockton
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