[greenchris]

and im grunting up this steep climb in my granny all of sudden i hear a crack and my friggen granny chainring snapped right in half. Out of four of the bolts three are stuck in the threads but the heads snapped clean off. Im rollin over to the LBS to see what they say tomorrow. Is this something that happens often or am i a beast? I dont have a camera so i cant show pics but the granny gear literally snapped in half...TIA

 

[splat]

the chain ring broke ? Your a Beast!

 

[renorider40]

I've never heard of it happening before.
So I guess that makes you a beast

 

[greenchris]

jeez i recently broke the non drive side crank on my saints and figured it was the two seasons of abuse. I replaced em with some xt's and snap. What really sucks is ive only had about 75 miles on the new xt's. If they cant get the bolts out im running my fxr as a 1x9.

 

[JohnE]

Where were you? There are no climbs in the Chicago area steep enough to even run a granny gear, mush less actually use it....

 

[JohnE]

BTW, I grew up there, so I am not just talking sheet! :biggrin: :biggrin:

 

[greenchris]

john i was out in palos not on the regular CAMBR trails but out exploring. Although there are no long climbs if you explore a bit you can find some really steep but short climbs.

 

[black noise]

That's hardcore... at that big hill at Sea Otter my dad somehow tore an XTR rear d clean in half pedaling! It's just a sign that you're a beast. Show it off to your friends.

 

[cannondalejunky]

i broke the small front chainring on my chase....but thats because the bolts were loose and one fell out i think then the whole thing snapped...i didn't even know i was in that gear...i never had a front der on that bike so it would sometimes fall onto that gear

 

[SkaredShtles]

and im grunting up this steep climb

Grunting up a steep climb in Chicago?

I don't think so.........

 

[davep]

They were over tightened, fracturing the heads. There is very little material in that area due to the large 5mm hex holethrough the middle. I have broken many of older/used ones just tightening them.

Might want to double check your chain line as well. If your chainline is 'out' it would put a lot of lateral load on the rings.

P.S. how do you break a saint arm?

 

[Skookum]

Grunting up a steep climb in Chicago?

I don't think so.........

Just climb up trails that you can only hike a bike on, that'll save your cranks.
i'm not proud to say a few months back i climbed up the 4th of July Trail. 4500 in 5 miles, bleh.

The downhill though....

http://forums.mtbr.com/attachment.php?attachmentid=111905&stc=1&d=1130085393

 

[JohnE]

john i was out in palos not on the regular CAMBR trails but out exploring. Although there are no long climbs if you explore a bit you can find some really steep but short climbs.

Ahhh, Palos! I left alot of skin and parts there in that weird white limestone...
Stay out of the water, bleeehhh!
Get a burrito afterwards? Isnt an El Famos right around the corner now? Burrito, big as your head!

 

[greenchris]

They were over tightened, fracturing the heads. There is very little material in that area due to the large 5mm hex holethrough the middle. I have broken many of older/used ones just tightening them.

Might want to double check your chain line as well. If your chainline is 'out' it would put a lot of lateral load on the rings.

P.S. how do you break a saint arm?

Thanks for the info! Im pretty sure my chain line was out of whack which caused the ring to crack. As for the saint the non drive side arm wouldnt stay onto the spindle??? Im not really sure what happened other than my hike a bike back to the car.

 

[Jeronimo]

and im grunting up this steep climb in my granny all of sudden i hear a crack and my friggen granny chainring snapped right in half. Out of four of the bolts three are stuck in the threads but the heads snapped clean off. Im rollin over to the LBS to see what they say tomorrow. Is this something that happens often or am i a beast? I dont have a camera so i cant show pics but the granny gear literally snapped in half...TIA

I snapped three of these in a period of 18 months:

 

[SkaredShtles]

Just climb up trails that you can only hike a bike on, that'll save your cranks.
i'm not proud to say a few months back i climbed up the 4th of July Trail. 4500 in 5 miles, bleh.

The downhill though....

http://forums.mtbr.com/attachment.php?attachmentid=111905&stc=1&d=1130085393

Roger that!

 

[Brian HCM#1]

Grunting up a steep climb in Chicago?

I don't think so.........

I was thinking the samething, must have been a driveway:biggrin:

 

[JohnE]

I gotta back Chris up, there is some steep stuff there, not real long, but steep. But the burritos make it worthwhile...

 

[hooples3]

way to much leg power.. the little ring never really had a chance

 

[valve bouncer]

I snapped three of these in a period of 18 months:

Bloody hell, I've bet you've got the scars to prove it too.

 

[SkaredShtles]

I gotta back Chris up, there is some steep stuff there, not real long, but steep. But the burritos make it worthwhile...

Yeah - probably like the ones in Michigan: the sides of a gravel pit.

 

[JohnE]

The burritos, or the climbs?? :biggrin:

 

[mastercycleman]

The climbs over the burritos, accually, there are some steep climbs in Michigan, not long, but step, and can be tech

 

[Jeronimo]

Bloody hell, I've bet you've got the scars to prove it too.

Nah.

I lucked out and didn't even crash when each of them happened. Pedaling up a hill and SNAP, my foot in the pedal on the ground. I also snapped a '97 XT once on a geared bike. The cheaper shizmano cranks also used to suffer "bent spider" syndrome after just a few rides and not from bashing rocks.

I photoshopped the other two crank pics down to be enable posting them here. RF got tired of replacing them, so they gave me DH cranks on the last replacement.