mavic d521 rim cracks?

gerrit van wijk said:

My bikeshop tells me Mavic d521 very strong long lasting rims, perfect for loaded touring and
mountanibiking. But I found a review stating the ceramic chips of very easy and cracks form around
the (single) eyelets. Does anybody have simular problems?

Every mavic rim I've every tried has cracked within 4k miles -- including some of theirs that are
supposed to be really strong (X219, X519, X223, X225 (Cannondale OEM)). I found that I can either
make 'em rigid and they crack at the spoke holes; or I can leave the spokes slightly looser and they
crack inside under the rim tape between spoke holes. YMMV, but I've decided stear clear of Mavics. I
weigh 225, which may make a difference 🙂. I've also been told that the anodization makes the rim
brittle and this contributes -- that I should try an unannodized rim.

David

"David Kunz" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

gerrit van wijk said:

My bikeshop tells me Mavic d521 very strong long lasting rims, perfect for loaded touring and
mountanibiking. But I found a review stating the ceramic chips of very easy and cracks form
around the (single) eyelets. Does anybody have simular problems?

Every mavic rim I've every tried has cracked within 4k miles -- including some of theirs that are
supposed to be really strong (X219, X519, X223, X225 (Cannondale OEM)). I found that I can either
make 'em rigid and they crack at the spoke holes; or I can leave the spokes slightly looser and
they crack inside under the rim tape between spoke holes. YMMV, but I've decided stear clear of
Mavics. I weigh 225, which may make a difference 🙂. I've also been told that the anodization
makes the rim brittle and this contributes -- that I should try an unannodized rim.

David

Anodizing neither strengthens or weakens a rim. I don't know why some people experienced these
eyelet cracks while others of us
(me) have not, but I'm more inclined to believe it has something to do with the heat treating or
maybe the spoke type ??

BTW, I'm 200 lbs (riding weight) and have been xc & dh'ing on same pair of anodized 521's for a
couple years; those rims have been bomb proof.
--
Slacker

In article <[email hidden]>, [email hidden] says...

Quoted message said:

My bikeshop tells me Mavic d521 very strong long lasting rims, perfect for loaded touring and
mountanibiking. But I found a review stating the ceramic chips of very easy and cracks form around
the (single) eyelets. Does anybody have simular problems?

Stick to non hard anodized, steel eyeleted aluminum rims and you'll be fine. Gucci wheels don't
belong on a bike built for reliability.

--
_________________________
Chris Phillipo - Cape Breton, Nova Scotia ramsays-online.comramsays-online.comOpen ↗

In article <[email hidden]>,
[email hidden] says...

Quoted message said:

"David Kunz" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

gerrit van wijk said:

My bikeshop tells me Mavic d521 very strong long lasting rims, perfect for loaded touring and
mountanibiking. But I found a review stating the ceramic chips of very easy and cracks form
around the (single) eyelets. Does anybody have simular problems?

Every mavic rim I've every tried has cracked within 4k miles -- including some of theirs that
are supposed to be really strong (X219, X519, X223, X225 (Cannondale OEM)). I found that I can
either make 'em rigid and they crack at the spoke holes; or I can leave the spokes slightly
looser and they crack inside under the rim tape between spoke holes. YMMV, but I've decided
stear clear of Mavics. I weigh 225, which may make a difference 🙂. I've also been told that the
anodization makes the rim brittle and this contributes -- that I should try an unannodized rim.

David

Anodizing neither strengthens or weakens a rim. I don't know why some people experienced these
eyelet cracks while others of us
(me) have not, but I'm more inclined to believe it has something to do with the heat treating or
maybe the spoke type ??

BTW, I'm 200 lbs (riding weight) and have been xc & dh'ing on same pair of anodized 521's for a
couple years; those rims have been bomb proof.
--
Slacker

I find that eyelet cracks are far more prevalent on road rider's rims. Even if they ride a mountain
bike on the road. I don't know why that is but road riding must put a consistent set of repetative
forces on the rim that causes the cracks more readily than DH or XC riding does. Or maybe it's just
that off road, rims get tacoed before they get a chance to crack at the eyelets 🙂
--
_________________________
Chris Phillipo - Cape Breton, Nova Scotia ramsays-online.comramsays-online.comOpen ↗

gerrit van wijk said:

My bikeshop tells me Mavic d521 very strong long lasting rims, perfect for loaded touring and
mountanibiking. But I found a review stating the ceramic chips of very easy and cracks form around
the (single) eyelets. Does anybody have simular problems?

I onsly ride road and XC (same bike). I think I wrecked 3 x517 ceramics (eyelet cracks). I now have
a 317 rear, since I use disks now anyway, and although the same weight, it seems a lot stronger.
Needless to say I'm not the worlds most refined cyclist.

Peter R.