K
Klaas Bil
Guest
The right crank on Het Beest, my Nimbus II Muni, creaked
when I was out on the trail and appeared to be somewhat
loose. Not having tools with me, I 1-footed home (in fact I
1.2-footed) and then tried to tighten the nut but it seemed
rock-tight. With wood and a hammer I nevertheless could
hammer the crank further on. I tried again to tighten the
nut using even more force, and it suddenly gave way for a
small fraction
(1/24) of a turn. Shoot, what was that?
I undid the nut completely to check the threads etc, and
found out that the nut which has anti-loosen dents on the
underside, had deformed the crank face it has been pressing
against for at least half a year. (The crank should be flat
there, shouldn't it?) I tightened the nut once more, and the
last bit went in 1/24 turn increments. I'm not sure if the
nut is fully tight, but I can't overcome any more bumps. Nor
do I know if the loose crank is cured well, haven't ridden
Het Beest since. Pogosticking in the garage alternating with
both feet forward, it looked OK. The crank is a Bicycle Euro
170 mm, the nut may be the one that came on the Nimbus II or
I may have swapped it.
Does this problem sound familiar to anyone?
The pic shows the crank face and the underside of the nut. I
haven't checked the other crank.
Klaas Bil
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| Attachment filename: crank_and_nut.jpg |
|Download attachment:
http://www.unicyclist.com/attachment/185040| +-------------------------------------------------------
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Klaas Bil - Newsgroup Addict
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Klaas Bil's Profile: http://www.unicyclist.com/profile/3442
View this thread: http://www.unicyclist.com/thread/29914
when I was out on the trail and appeared to be somewhat
loose. Not having tools with me, I 1-footed home (in fact I
1.2-footed) and then tried to tighten the nut but it seemed
rock-tight. With wood and a hammer I nevertheless could
hammer the crank further on. I tried again to tighten the
nut using even more force, and it suddenly gave way for a
small fraction
(1/24) of a turn. Shoot, what was that?
I undid the nut completely to check the threads etc, and
found out that the nut which has anti-loosen dents on the
underside, had deformed the crank face it has been pressing
against for at least half a year. (The crank should be flat
there, shouldn't it?) I tightened the nut once more, and the
last bit went in 1/24 turn increments. I'm not sure if the
nut is fully tight, but I can't overcome any more bumps. Nor
do I know if the loose crank is cured well, haven't ridden
Het Beest since. Pogosticking in the garage alternating with
both feet forward, it looked OK. The crank is a Bicycle Euro
170 mm, the nut may be the one that came on the Nimbus II or
I may have swapped it.
Does this problem sound familiar to anyone?
The pic shows the crank face and the underside of the nut. I
haven't checked the other crank.
Klaas Bil
+-------------------------------------------------------
---------+
| Attachment filename: crank_and_nut.jpg |
|Download attachment:
http://www.unicyclist.com/attachment/185040| +-------------------------------------------------------
---------+
--
Klaas Bil - Newsgroup Addict
------------------------------------------------------------------------
Klaas Bil's Profile: http://www.unicyclist.com/profile/3442
View this thread: http://www.unicyclist.com/thread/29914