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Surely somebody knows??

Thanks for the ridiculous, albeit amusing guesses folks. I have the "nipples" in my hand from Husaberg as we speak......

They are carbon steel base material, & appear to be black oxide plated you'll all be interested to know....

I'm sure Pete has some further suggestions however, have you thought of crystallised monkey spunk Pete (in relation to this post question & not in general)??

Crispin
 
Seriously, perhaps 8 or 9 years back we saw a product here, or maybe it was an entire process, that left the surface of hi-tensile steel bolts a helluva lot more resistant to corrosion. It also left the surface a very attractive black colour. I think it was from Loctite? Could this be what they have used?

It was supposed to help the durability of bolts in extreme applications by reducing cracking due to stress corrosion. I can't say I have ever heard of a spoke nipple failing in this way though..

If this is not the case, could they be made from melted down Japanese bikes? :)
 
I've made it my personal mission to get to the bottom of this now, one way or another!!

Very curious... just did a picture search on google, for "black" "spoke nipples" & one of the first pics I got was the one I posted above. Same part numbers, everything, quoted on below KTM web site;

http://www.ktmcycles.com/catalog/PowerParts/wheels.htm

HOWEVER, in their desciption they refer to these as "anodised". Anodising is normally only used on Aluminium (although is used very rarely on titanium, zinc or magnesium ( http://en.wikipedia.org/wiki/Anodizing )).

I've tested these nipples with a magnet, and these are magnetic (ferrous alloy - i.e. carbon steel or ferritic/martensitic stainless).

DSC_0114.jpg


Aluminium is non magnetic, so these cannot be aluminium. Additionally, these weigh more like c/s as opposed to aluminium for the same size component.

So as a minimum, the product descriptions on the KTM web site are incorrect.

I'll get onto KTM & see if they can finally clear this up, although this further supports the black oxide theory suggested by Dr Freaky...

I'll carry on the happy hunt!

Crispin
 
Monell?
Monell metal - an alloy of nickel and copper and other metals (such as iron and/or manganese and/or aluminum)
 
Crispin - Do you mean to say you typed the words BLACK & NIPPLES into Google? What else did you find?? 8O

If you did that here at work, our data police would be onto you like an ex onto lottery winnings! :lol:
 
Nice work professor Crispin. I'm still wondering why it matters tho' :?:

I vote black oxide.
 

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