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PostPosted: Sun Nov 17, 2013 9:21 am 
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Tinker, Taylor, Tart
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Joined: Sat Nov 29, 2008 8:00 pm
Posts: 1808
Location: Sydney, 'straylia
I'm sure I read somewhere recently that the MTB version of the S-Works crank will fit on a BSA road frame that has a suitable 30mm BSA BB installed (Zipp / THM / Tune etc). I've searched, but I can't find the reference now.

Can anyone confirm whether this will work?

If it will, can anyone also confirm that the spider from the Lightning cranks will work on the S-Works crank? I know the S-Works version is licensed from Lightning so I assume as much, but I want to be sure.

I need a new chainset and my LBS has the S-Works in stock - my frame already has a 30mm BSA BB in it so it seems like a decent option if it'll work...


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PostPosted: Sun Nov 17, 2013 11:49 am 
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Location: WALES,UK
I can confirm the spider fits though you will need to file the splines on the Lightning spider a little, I also used the Lightning locking as its much thinner than the S-Works one. Not sure about the axle, unless its 73mm and its just enough extra length to fit a BSA/BB30 converter?

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PostPosted: Sun Nov 17, 2013 12:21 pm 
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Tinker, Taylor, Tart
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Thanks - I've been able to work out that the MTB version will work, but it turns out they only make that in 170, 175 or 180mm lengths. As I use 172.5mm it's not going to work.

Might just go with the Lightning anyway...


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PostPosted: Sun Nov 17, 2013 12:31 pm 
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So how will the MTB version work? Is it because it has a 73mm axle?

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PostPosted: Sun Nov 17, 2013 5:25 pm 
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Joined: Mon Oct 15, 2007 9:28 pm
Posts: 1150
I am guessing that you would need to add some spacers on the crank spindle.
Other considerations are: Chainline- the mtb crank may not put your rings in an ideal angle, and Q-factor.
The MTB crans are 16mm Q-factor.


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PostPosted: Sun Nov 17, 2013 6:47 pm 
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Posts: 1405
The lightning spider will not work on S-Works crank according to my information. I contacted Lightning a few years ago regarding the use of an S-Works SRM on lightning cranks, and they told me that the splines on the spider were different between the two cranks.


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