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-   -   Durace crank problem (https://www.bikeforums.net/road-cycling/687776-durace-crank-problem.html)

ID64 10-14-10 04:17 PM
Durace crank problem
 
I was cleaning my bike today and have noticed this:

http://dl.dropbox.com/u/560780/IMG_0213.jpg

I don't think that this is normal :(

dstrong 10-14-10 04:20 PM
Not sure what you're referring to but if you're looking at the squared off teeth and such, that's normal. Chainrings have all sorts of weird angles, pins, ramps etc. to help shifting. Or am I missing it?

patentcad 10-14-10 04:20 PM
That's not a problem. This is a problem.

http://i4.photobucket.com/albums/y11...armsnap908.jpg

ID64 10-14-10 04:21 PM
Originally Posted by dstrong (Post 11623563)
Not sure what you're referring to but if you're looking at the squared off teeth and such, that's normal. Chainrings have all sorts of weird angles, pins, ramps etc. to help shifting. Or am I missing it?
Yes, the teeth. Ok, then. Thanks for your reply :)

ID64 10-14-10 04:22 PM
Originally Posted by patentcad (Post 11623569)
That's not a problem. This is a problem.

http://i4.photobucket.com/albums/y11...armsnap908.jpg
Holy!!!!

dstrong 10-14-10 04:22 PM
Originally Posted by patentcad (Post 11623569)
That's not a problem. This is a problem.

http://i4.photobucket.com/albums/y11...armsnap908.jpg
Not DA is it?

patentcad 10-14-10 04:24 PM
Originally Posted by dstrong (Post 11623580)
Not DA is it?
It was. It snapped like a cheap twig in a noreaster beneath the massive watts of Pcad's Mighty Guads.

dstrong 10-14-10 04:25 PM
Originally Posted by patentcad (Post 11623589)
It was. It snapped like a cheap twig in a noreaster beneath the massive watts of Pcad's Mighty Guads.
That'll leave a mark.

CCrew 10-14-10 06:15 PM
Originally Posted by dstrong (Post 11623592)
That'll leave a mark.
Naa. It'll buff out.

ErichM 10-14-10 07:06 PM
Wow the teeth on that crankset are so messed up!

I have an Ultegra crankset I will trade you for it if you want. I don't mind.

patentcad 10-14-10 07:09 PM
Remember young padaweenie: flesh heals. Dura Ace doesn't.

Schmadley 10-14-10 07:26 PM
Pcad. I don't know what Guads are, but if you mean the muscles of your thigh, then it should be Quads (as in quadricepts), or are Guads a BF inside joke........

patentcad 10-14-10 07:32 PM
Originally Posted by Schmadley (Post 11624398)
or are Guads a BF inside joke........
An Inside BF Ryan F Legend.

datlas 10-14-10 07:35 PM
Originally Posted by patentcad (Post 11624430)
An Inside BF Ryan F Legend.
I miss that knucklehead. Razor is not quite as entertaining.

Pilsley 10-14-10 07:47 PM
A new chain every now & again,

Is good!

Get as many miles out of your tires as you can, if that's your thing, but your chain buggers things up if you ignore it.

Psimet2001 10-14-10 09:19 PM
Originally Posted by Schmadley (Post 11624398)
Pcad. I don't know what Guads are, but if you mean the muscles of your thigh, then it should be Quads (as in quadricepts), or are Guads a BF inside joke........
BF inside joke.

OP - crank is fine. One of the reasons that Shimano cranks shift so well is because they actually take the time to engineer the teeth, lift pins and ramps to actually facilitate the chain coming up on to the ring. Often imitated - never duplicated.

If you would prefer all of the teeth to look the same then I am sure someone would gladly trade you a POS crank for your DA one. I am sure I have a few laying around if you'd like to switch.

Pilsley 10-14-10 09:25 PM
Originally Posted by Psimet2001 (Post 11624988)
BF inside joke.

OP - crank is fine. One of the reasons that Shimano cranks shift so well is because they actually take the time to engineer the teeth, lift pins and ramps to actually facilitate the chain coming up on to the ring. Often imitated - never duplicated.

If you would prefer all of the teeth to look the same then I am sure someone would gladly trade you a POS crank for your DA one. I am sure I have a few laying around if you'd like to switch.
Look closer,

Shark fins.

Psimet2001 10-14-10 09:49 PM
Originally Posted by Pilsley (Post 11625014)
Look closer,

Shark fins.
Again....I'll take it.

Just walked 10 feet into my shop and checked out the 8 Shimano cranks I had sitting there and all of them have what you are describing as "shark fins" in the vari-tooth ring design. Normal. Real shark fins are un-mistakable.

Schmadley 10-14-10 11:48 PM
Originally Posted by patentcad (Post 11624430)
An Inside BF Ryan F Legend.
Ahh! That's the problem with being a relative newbie to BF.

Then Guads it will forever be!

dstrong 10-15-10 07:48 AM
Originally Posted by Schmadley (Post 11625442)
Ahh! That's the problem with being a relative newbie to BF.

Then Guads it will forever be!
And with massive guads, you can drope the hammer.

Homebrew01 10-15-10 07:50 AM
Originally Posted by dstrong (Post 11626156)
And with massive guads, you can drope the hammer.
hamer

Paul Y. 10-15-10 08:13 AM
Originally Posted by patentcad (Post 11623589)
It was. It snapped like a cheap twig in a noreaster beneath the massive watts of Pcad's Mighty Guads.
Is that bike an Ibis?

slowandsteady 10-15-10 08:16 AM
Originally Posted by patentcad (Post 11623569)
That's not a problem. This is a problem.

http://i4.photobucket.com/albums/y11...armsnap908.jpg
Looks like somebody dialed it up to 400w to drop a poseur.

LAJ 10-15-10 08:21 AM
Originally Posted by patentcad (Post 11623569)
That's not a problem. This is a problem.

http://i4.photobucket.com/albums/y11...armsnap908.jpg
Velo Vol can weld that.

patentcad 10-15-10 08:26 AM
Originally Posted by LAJ (Post 11626354)
Velo Vol can crazy glue that.
Fixed for GMZ Dollar Store reality.

Aurelius 10-15-10 08:53 AM
Is that what happens when you put DA on a tandem?


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