joejumps4fun said:I have a question, though. Has anyone noticed on a giraffe that the
chain tension isn't quite exactly the same at different intervals of a
cycle? SOme parts, it seems a tiny bit loose, other parts it seems
tight. It's not too much of a problem for me riding it but I just
wanted to know if this is something I should be concerned about and
correct...or leave alone. Is it common?
That is because the TX uses cheap parts. Same with most other
affordable giraffe unicycles. The problem comes from the sprockets not
being perfectly round and the chainring by the pedals not being
perfectly centered.
You can improve things by buying high quality components and replace
the cheap stuff that comes stock on the TX. Buy a quality small
chainring that is designed for singlespeed use. Chainrings for
singlespeeds and track use are more round because singlespeeds are
picky about that. Same for the cog down at the wheel. Replace it with
a quality track fixed gear cog. You'll also need to replace the cranks
with something better so you can mount a proper chainring to it. It's
better to get a crankset that is intended for singlespeed use since the
chainring holes will be more centered.
So it can all be made better with better components. The chain will
maintain a consistent tension. The wheel will roll more smoothly. The
unicycle will feel better.
It is also a good idea to either replace the hub with a high quality
track hub so that the cog is less likely to come loose from hard
backpedaling. Baring that, you should consider getting the cog spot
welded to the hub. The Nimbus giraffe unicycles from Unicycle.com have
a bolt on system to attach the cog. That system cannot come lose the
way the screw on track cogs can. The Nimbus hub design is much more
safe. But if you don't want to go that route you should just weld the
cog to the hub. A giraffe with a cog that comes loose is very
dangerous.
--
john_childs
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