Crank Problem

Well, I’ve had my new Pashley MUni for a couple weeks now, but I’ve only ridden it 3 or 4 times (nothing heavy duty, just around the neighborhood a bit). But last night I went to mount and my left crank fell off. How do I get it back on?

I took the little plastic cap off the end of the crank and a little 6-sided nut that is flat on one side fell out. I figure that you just put the crank onto the axle(?) and then screw the little nut on until it’s tight, but it’s not that easy. The crank fits onto the axle, but I can’t push it all the way down towards the bearing holder to get enough room to screw the nut in. My right crank fits pretty snug and is pretty close to the bearing holder. Do I need to put the crank on and then hammer it until it sits closer to the bearing holder?

Any idea why my crank would just fall off after a few light rides? Maybe it wasn’t completely tight before they shipped it to me?

Thanks, -Josh

Funny, I had exactly the same problem (on the left crank) twice so far. It
seems the hex nut which tighten the crank body against the axle unscrews
after a while. Last time I managed to loose the crank while going down
real fast resulting in a pretty funky wipe out. Solution : check it
regularly and tighten it after a lot of hops / drops or a long ride. I
already had that problem with lasco cranks on my monty uni.

Or you could use a bit of loctite.

Oli-

-----Original Message----- From: Zahnpasteus
[mailto:forum.member@unicyclist.com] Sent: Wednesday, July 11, 2001 4:35
PM To: unicycling@winternet.com Subject: Crank Problem

Well, I’ve had my new Pashley MUni for a couple weeks now, but I’ve only
ridden it 3 or 4 times (nothing heavy duty, just around the neighborhood a
bit). But last night I went to mount and my left crank fell off. How do I
get it back on?

I took the little plastic cap off the end of the crank and a little
6-sided nut that is flat on one side fell out. I figure that you just put
the crank onto the axle(?) and then screw the little nut on until it’s
tight, but it’s not that easy. The crank fits onto the axle, but I can’t
push it all the way down towards the bearing holder to get enough room to
screw the nut in. My right crank fits pretty snug and is pretty close to
the bearing holder. Do I need to put the crank on and then hammer it until
it sits closer to the bearing holder?

Any idea why my crank would just fall off after a few light rides? Maybe
it wasn’t completely tight before they shipped it to me?

Thanks, -Josh


Posted via the Unicyclist Community - http://unicyclist.com/forums

I had my left crank fall of my 20" deluxe miyata after a few rides on it
when I first bought it. I called unicycle.com after many failed and
frustrating attempts to screw it back on without it falling off. John
sent me a new crank and when I went to the bike shop to have it put on
they told me to check it every couple of weeks. I was told that the crank
had been warped which made it impossible to get the nut completely tight.
Best of luck.

Brian Hafdahl