I’ve taken off the tyre and the rim is single-walled and appears to be exactly the same as the Qu-Ax - it’s got a nice brushed aluminium look to it but I guess it’s steel (just to show my materials knowledge I successfully stuck a magnet to it). I presume Qu-Ax & Coker use the same source. It would be interesting to know if the braking surface is any good (have you got yours yet, pdc?)
I’ve taken a couple of photos & I’ll post them as soon as I get gallery access.
Mine is due in any day, I was hoping last week (damn slow international mail). I’ll have a Magura brake on it. Pics an review as soon as I get it and try it out.
Darren said the rim is alloy. Does a magnet stick to alloy?
A magnet will not stick to aluminum alloy. If a magnet sticks to the rim then the rim is steel alloy. If the magnet doesn’t stick then it’s aluminum alloy. Just try the magnet away from the spokes. If the magnet is too close to the spokes then it could be attracted to the spoke instead of the rim and skew the results.
Steel is also an alloy so calling it an alloy rim is vague. It’s either steel alloy or aluminum alloy. I mention this just to keep Harper happy so he doesn’t try to remind me that steel is an alloy too.
Calling it an alloy rim when it is brushed steel, seems like a kinda sneaky way of making people think it is an aluminum alloy, as alloy is commonly used to mean aluminum alloy, perhaps Bedford cycles should make this clearer in their catalog.
Thanks. I find this alloy ambiguity tiresome. Some stainless steel alloys are non-magnetic. Some are highly magnetic. Nickel is highly magnetic but unlikely to be used in pure form on a rim. However, the most common strike plate for a finish overplate is nickel.
If a magnet sticks to a rim the most likely conclusion is that it is a common steel alloy.
Aluminum in its pure form is, of course, not an alloy. It is commonly alloyed to make it harder, more machinable, more easily welded, or to give it a myriad of other properties. Steel is always an alloy by definition. Saying it is a steel rim, not an alloy rim, makes no sense whatsoever.
Sigh. I still simplified things too much to avoid the wrath of Harper. I should have just linked to the Wikipedia entry for alloy. But I’m sure Harper would find fault in that explanation too.
Except in the bicycle marketing industry where the generic term alloy has been redefined to mean some form of aluminum alloy.
When I did an internship at Boeing some shop workers tried to convince me that Boeing had developed a magnetic aluminum that allowed them to easily move parts around using an electro magnet on a crane. I didn’t fall for it.
Herper, I’m suprised that you are so frustrated by an esoteric definition of a material that doesn’t fit non-industry definitions, yet are so quick to use the adjective “magnetic,” which is inaccurate and imples that the stated material is inherently attractive of ferrous materials. I believe the word you want to use is “ferrous”.
On Wed, 23 Mar 2005 19:50:27 -0600, “john_childs” wrote:
>When I did an internship at Boeing some shop workers tried to convince
>me that Boeing had developed a magnetic aluminum that allowed them to
>easily move parts around using an electro magnet on a crane. I didn’t
>fall for it.
Well, if one would alloy aluminium with some iron… if that is ever
Klaas Bil - Newsgroup Addict
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