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 Post subject: Clavicula DP crankset?
PostPosted: Sat Nov 30, 2013 4:18 pm 
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Joined: Wed Jan 12, 2005 6:29 pm
Posts: 200
Location: Oslo, Norway
Anybody have any experience with the THM Clavicula crankset lately? I'm running a Lightning HD with OctaOne chainring from Extralite, the whole setup weigs 476g plus BB. I've also used a standard Lightning, but they don't hold up to my riding style, a bit to much jumping perhaps, even though it's my XC race bike.

Now, the Clavicula DP weighs considerably less, it would end up at 352g plus BB with the same setup as above. But can I expect it to last? I weigh 80kg and ride my 20lb FS XC race bike pretty hard, but no more than 50cm drops on that bike.

Anybody know of some other lightweight alternatives out there that would last? Tune Blackfoot? Mythic? Nordischer Rahmenbau? Can't seem to find much info on any of them.

Thnx.


Ole.


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PostPosted: Sat Nov 30, 2013 5:36 pm 
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Location: Tucson, Az.
I've used the dp on my last few bikes and have been really happy with it, though I am a light rider. The build quality of the thm is definitely better than the lightning and the crank should hold up well. However you might also look at the raceface next sl.

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Posted: Sat Nov 30, 2013 5:36 pm 


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PostPosted: Sat Nov 30, 2013 7:56 pm 
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Joined: Wed Jan 12, 2005 6:29 pm
Posts: 200
Location: Oslo, Norway
Thanks for the input. I know of several people who have had pedal inserts come loose, axle spline deteriorate and bearing preload threads come loose.

The Next SL is nice, but I won't save enough weight to make it worth the change from the Lightning HD I'm using now.


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PostPosted: Mon Dec 02, 2013 9:21 pm 
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Joined: Fri Aug 22, 2008 9:17 pm
Posts: 282
Location: Europe
I've used DP with XX1 since June this year in racing on world cups and few world series marathons in different conditions. I'm really impressed with strength of these cranks and considering the weight of complete set bb(423grams!!!) nothing is better. I'm not the lightest about 73-74kg and the cranks still hold good.


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PostPosted: Mon Dec 02, 2013 9:52 pm 
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Joined: Mon Dec 05, 2011 4:27 pm
Posts: 38
Location: Antwerp, Belgium
what brand rings did you use to covert your Clavicula to XX1 ?


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PostPosted: Tue Dec 03, 2013 1:32 pm 
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Joined: Fri Aug 22, 2008 9:17 pm
Posts: 282
Location: Europe
Race Face 34 for single with e13 XCX , narrow- wide rings weren't available yet when i was assembling the bike. Worked without any issue i never had any chain drops. For coming season i'm going to use standard chainring with XCX guide too. I don't belive in this X-Syns stuff it just doesn't work in real world of racing, i've seen too many fails.


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PostPosted: Sat Jan 04, 2014 6:03 am 
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Joined: Sun Feb 03, 2008 4:40 pm
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Location: Singapore
kolarzyk wrote:
Race Face 34 for single with e13 XCX , narrow- wide rings weren't available yet when i was assembling the bike. Worked without any issue i never had any chain drops. For coming season i'm going to use standard chainring with XCX guide too. I don't belive in this X-Syns stuff it just doesn't work in real world of racing, i've seen too many fails.


So have you had any issues in regards to mounting/running a single chainring on the Clavicula DP with the XX1 cassette? I was considering getting a Clavicula M3 crank set, but now wondering if it would be an advantage to get the DP instead and just run it with a single chainring together with the rest of the XX1 setup. It would at least be lighter than the M3 setup and unless there is something I missed, I cannot see the advantages of the M# over the DP if not in need of changing the spider or go SRM. Any thoughts?


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PostPosted: Mon Jan 06, 2014 1:01 pm 
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@seismic - It will work fine, the only downside is that you can't run any smaller than a 30 tooth ring.


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PostPosted: Mon Jan 06, 2014 1:34 pm 
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Location: Singapore
jooo wrote:
@seismic - It will work fine, the only downside is that you can't run any smaller than a 30 tooth ring.


Thank you for the info. Then I guess I should go for the DP rather than M3 simply due to the weight savings.


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PostPosted: Wed Jan 08, 2014 1:36 pm 
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Joined: Sun Feb 03, 2008 4:40 pm
Posts: 176
Location: Singapore
jooo wrote:
@seismic - It will work fine, the only downside is that you can't run any smaller than a 30 tooth ring.



Jooo,
Do you know how to mount a single chainring on the Clavicula DP carbon spider without the chainring bolts having any negative effect on the carbon spider? Normally, when using 2 chainrings, the chainrings will protect the spider as the bolts will touch the chainrings only and not the carbon spider when bolting the chainrings together around the spider. How do you avoid this if using a Clavicula DP with a single chairing ?

Further, if you mount the single chainring where you would normally have the largest chainring (outer), will the rear part of the chainring bolts not need some kind of spacer in order to avoid ending up inside the chainring bolt hole of the spider?

Hope someone can provide a bit of clarity.

Thank you


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PostPosted: Thu Jan 09, 2014 1:33 pm 
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Mount it on the inside. It's closer to the stock XX1 chainline.

You should use some kind of washer/spacer against the outside spider tabs as you've guessed eg:
Image


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PostPosted: Fri Jan 10, 2014 4:06 am 
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Joined: Thu Nov 04, 2004 12:53 pm
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Location: Hong Kong
Hi seismic,

You can order a custom carbon bash guard from fibrelyte to protect the spider (instead of the outer chainring). Avoid the chainring bolts contact the spider directly and strengthen the carbon spider too.

Image
Image


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PostPosted: Fri Jan 10, 2014 3:24 pm 
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Joined: Sun Feb 03, 2008 4:40 pm
Posts: 176
Location: Singapore
Hi Sonny,

Do you know if the bash guard will prevent the issue seen 2/3 down the page in this thread? viewtopic.php?f=10&t=101405

It looks like there is a risk of braking the carbon spider if using one chainring only on the Clavicula which it seems THM is also warning the thread starter about.


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Posted: Fri Jan 10, 2014 3:24 pm 


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