rec.sport.unicycling · Public discussion

Coker crank/hub problem

sockmonster · 2006-06-12T00:59:35+00:00

I just finished up a month-long unicycle tour of New England. 29 days through the White Mountains, Boston, Rhode Island and Connecticut, the Green Mountains, the White Mountains again, and ending in Maine. 720 miles. The morning of my last day, my left crank arm felt a little loose. I tightened it up, kept riding. Five miles later, it was loose again. I tightened it up, kept riding. Every ten minutes it was loose again. I thought it might have something to do with the pouring rain, like it was making the hub slick, or something. About half way into the day, I took the bolt all the way out, took the crank off, pounded it back on, tightened it back up, and kept riding. Once I'd made it back to Maine, I couldn't tighten the bolt any more. It had reached the bottom of the hole. Not only that, but if the crank were any deeper on the hub, it would be touching the frame. After a thousand miles of riding in the past six months, all of the sudden the crank doesn't even fit the hub anymore? Has this happened to anyone else before? I have it on right now with a tin foil shim, but, as you can imagine, it's not working too well. I have not yet tried a different set of cranks to see how those work out, but it just doesn't make any sense to me. Can anyone help me out? UnicycleMax -- sockmonster www.unicyclemax.com ------------------------------------------------------------------------ sockmonster's Profile: http://www.unicyclist.com/profile/4286 View this thread: http://www.unicyclist.com/thread/50220

Started by sockmonster · 12 June 2006 · Last activity 12 June 2006 · 6 posts · 441 views

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01 / Original postCoker crank/hub problemsockmonster · 12 Jun 2006 02 / This pagePosts 1–6Page 1 of 1 · chronological order 03 / Latest replyPost #6dan de man · 12 Jun 2006

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Original section: rec.sport.unicycling
Published: 12 June 2006
Last activity: 12 June 2006
Original author: sockmonster
Posts: 6
Discussion status: Public discussion
Total views: 441
Views / 30 days: 0
Topics: Cranksets

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Original post
sockmonster
Archived post

12 June 2006, 00:59 UTC #1

I just finished up a month-long unicycle tour of New England. 29 days
through the White Mountains, Boston, Rhode Island and Connecticut, the
Green Mountains, the White Mountains again, and ending in Maine. 720
miles.
The morning of my last day, my left crank arm felt a little loose. I
tightened it up, kept riding. Five miles later, it was loose again. I
tightened it up, kept riding. Every ten minutes it was loose again. I
thought it might have something to do with the pouring rain, like it
was making the hub slick, or something.
About half way into the day, I took the bolt all the way out, took the
crank off, pounded it back on, tightened it back up, and kept riding.
Once I'd made it back to Maine, I couldn't tighten the bolt any more.
It had reached the bottom of the hole. Not only that, but if the crank
were any deeper on the hub, it would be touching the frame.
After a thousand miles of riding in the past six months, all of the
sudden the crank doesn't even fit the hub anymore? Has this happened to
anyone else before? I have it on right now with a tin foil shim, but,
as you can imagine, it's not working too well. I have not yet tried a
different set of cranks to see how those work out, but it just doesn't
make any sense to me. Can anyone help me out?
UnicycleMax
--
sockmonster
www.unicyclemax.com
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iridemymuni
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12 June 2006, 01:42 UTC #2

with my nimbus 24" freestyle i change crank sizes over quite regularly,
every time i do it the cranks get closer and closer to the frame, at
the moment my 170's are about 2mm away from the frame and getting ever
closer, i dont know what i'll do when they eventually hit the frame.
--
iridemymuni
In theory, there is no difference between practice and theory, in
practice, there is.
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U-Turn
Archived post

12 June 2006, 02:39 UTC #3

Grats on the great ride! That is quite an accomplishment.
Trash the cranks and get new ones.
--
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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dan de man
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12 June 2006, 08:14 UTC #4

iridemymuni said:
with my nimbus 24" freestyle i change crank sizes over quite regularly,
every time i do it the cranks get closer and closer to the frame, at
the moment my 170's are about 2mm away from the frame and getting ever
closer, i dont know what i'll do when they eventually hit the frame.
w/ cotterles hubs every time you remove them take a bit off them so you
shouldnt change crank sizes so regulary mabey or you could save up for
a splined hub
--
dan de man
tomtrevor said:
how the hell do u get fluro brown??? it would also probably look like
uve dunked the uni in a big pile of [censored]
iridemymuni said:
What colour [censored] do you do tom ? flouro brown [censored]? thats kinda weird
tomtrevor said:
y do u want to know the colour of my [censored]? like that just isn't natural
for someone to think that.

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giraffe
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12 June 2006, 09:44 UTC #5

dan de man said:
w/ cotterles hubs every time you remove them take a bit off them so you
shouldnt change crank sizes so regulary mabey or you could save up for
a splined hub
splined hub on a freestyle? hmmm :eek:
it would be nearly as cheap to just buy another wheelset/freestyle uni
however
--
giraffe
evil-nick said:
Trials biker after seeing me jump off a concrete barrier: "How do you
keep from squashing your nuts!?"
Me: "I use those for cushioning!"
:p
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dan de man
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12 June 2006, 12:08 UTC #6

meh my $0.2
--
dan de man
tomtrevor said:
how the hell do u get fluro brown??? it would also probably look like
uve dunked the uni in a big pile of [censored]
iridemymuni said:
What colour [censored] do you do tom ? flouro brown [censored]? thats kinda weird
tomtrevor said:
y do u want to know the colour of my [censored]? like that just isn't natural
for someone to think that.

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