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I've been waffling on whether to take the plunge for a XTR crank on my race bike. XTR is so damn sexy, a bit lighter compared to XT, and stiffer than a horned up teenager with a hard drive full of porn. How are the rings? Middle and granny are Ti right? I spend 80% of my time in the middle. What are the real benefits of the ti rings? I lust these cranks, but they are indeed a lot of casheesh. Although I've spied some deals on eBay on some new ones. Any real world feedback would be appreciated.
 

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jasondean said:
I've been waffling on whether to take the plunge for a XTR crank on my race bike. XTR is so damn sexy, a bit lighter compared to XT, and stiffer than a horned up teenager with a hard drive full of porn. How are the rings? Middle and granny are Ti right? I spend 80% of my time in the middle. What are the real benefits of the ti rings? I lust these cranks, but they are indeed a lot of casheesh. Although I've spied some deals on eBay on some new ones. Any real world feedback would be appreciated.
only the middle is ti, with a carbon spider, the big & granny are aluminum
the real benefit of ti are light weight, your bike and your wallet, replacement middle is $140
 

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dan0 said:
only the middle is ti, with a carbon spider, the big & granny are aluminum
the real benefit of ti are light weight, your bike and your wallet, replacement middle is $140
It's waaaay cheaper to buy a complete XTR crankset from CRC than it is to buy a set of chainrings in North America. It's odd that CRC only lists the big XTR 970 ring at $142, they don't have the middle ring listed at all. They list the rings at Universal Cycles where a set of 3x XTR rings would be $353 with their coupon discount. Why would you not just buy a new set of cranks instead, you end up with spare BB's as well.
 

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rockyuphill said:
It's waaaay cheaper to buy a complete XTR crankset from CRC than it is to buy a set of chainrings in North America. It's odd that CRC only lists the big XTR 970 ring at $142, they don't have the middle ring listed at all. They list the rings at Universal Cycles where a set of 3x XTR rings would be $353 with their coupon discount. Why would you not just buy a new set of cranks instead, you end up with spare BB's as well.
crazy , isnt it?
Ive had a hard time even finding a xt 770 middle ring, universal finally got them in after a 3 month wait.
I heard the xtr rings are interchangeable with the xt. cant find any difference at all with the grannys, also, is there a diff. with the BB? look identical
not being a racer or weight weenie I generally go xt unless there are other benefits ( like the shifters)
 

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Any comments on the mechanism for preloading the bearings? Doesn't the XTR use something between the non-drive crankarm and the bearing for the tension? I'm trying to decide between the two as well.
 

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Got A Lust for Life...
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The mechanism is the bearing preload ring on the non drive side crank.

A plastic tool slips over the ring to tighten it. It can be done by hand. The ring is tightened down with a 2mm allen.

I have a set on my LT2. They are incredible cranks. You get the strong and light but not cheap deal on XTR cranks. I look at it this way...dh racers were using the 952s on their dh rigs launching off huge drops at sick speeds. The 970s are stiffer than those at 770g with bottom bracket. I had Saint cranks before these. Obviously the Saints are stiff, but I really couldn't tell the difference in XC applications.

770 rings are in stock somewhere...
 

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Ok cool... it's just funny how there are a lot of people that HATE carbon. I've known the owner of my LBS for years and he rides a lot. He's got FSA carbon cranks on his Ibis Mojo and loves them, so they come highly recommended. I guess we can just chalk it up to preference but I'm pretty sure the ceramic bearing bb is an upgrade.
 

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iClique said:
Ok cool... it's just funny how there are a lot of people that HATE carbon. I've known the owner of my LBS for years and he rides a lot. He's got FSA carbon cranks on his Ibis Mojo and loves them, so they come highly recommended. I guess we can just chalk it up to preference but I'm pretty sure the ceramic bearing bb is an upgrade.
I love carbon but I don't think the FSA K-Force is an upgrade either. I also don't think having ceramic bearing bb is an upgrade either.
 

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Yup, seen quite a few threads where the carbon delaminated and the cranks were worthless.

IAmtnbikr said:
I put the FSA Team Issue Octalink-bb carbon crankset on my road bike some years ago and it's been just fine. But the mountain bike gets XTR (had used RaceFace NEXT LP before). I believe I've seen somewhere that FSA's arms had some breakage issues lately, or no?
 
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