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PostPosted: Tue Jul 29, 2014 5:00 am 
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Joined: Mon Feb 16, 2009 8:29 am
Posts: 95
Image

What is the material of the freehub? or is there any special coating?
I failed to find it in the web site :noidea:


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PostPosted: Tue Jul 29, 2014 5:30 am 
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Joined: Fri Dec 12, 2008 5:19 am
Posts: 707
Location: Brisbane, Oz
It's 'Plasma Treated', whatever that means.


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Posted: Tue Jul 29, 2014 5:30 am 


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PostPosted: Tue Jul 29, 2014 6:36 am 
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Joined: Fri Feb 10, 2012 4:27 pm
Posts: 460
The mechanical engineer in me says 'plasma treated' is probably just a fancy name for plasma spraying, which you can learn more about here:

http://en.wikipedia.org/wiki/Thermal_spraying

I'm not an expert on materials but given the needs of that particular application ( hardness to prevent notching, not much shear or shock impact forces) I'd strongly suspect that was a ceramic of some kind. aternatively it could be some sort of metal oxide. Highly doubt it's a metal alloy, there are better ways to go about that.


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PostPosted: Tue Jul 29, 2014 7:12 am 
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Joined: Mon Feb 16, 2009 8:29 am
Posts: 95
Thank you for the replies!

Besides, the flanges look like plastic :roll: (of course it is not)


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PostPosted: Tue Jul 29, 2014 1:08 pm 
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Joined: Wed Oct 06, 2004 6:55 pm
Posts: 2050
Location: Vienna, AUT
Carbon looks like plastic too, but works.
Campy / Fulcrum have been using that same basic hub shell design for a while now and I doubt the material has changed much other than color. The hubs work work well and build a surprisingly nible wheelset. The gray looks pretty good.


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