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how to tell the difference?

Old 06-17-07, 11:52 PM
  #1  
exas
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how to tell the difference?

how to tell the difference between steel and aluminum rims (and other parts of the bike as well)
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Old 06-18-07, 12:14 AM
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A magnet.
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Old 06-18-07, 02:59 PM
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Originally Posted by Wordbiker
A magnet.
and i am guessing the next step would be to trade the magnet for a device that can detect the difference between aluminum and steel
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Old 06-18-07, 03:10 PM
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Originally Posted by exas
and i am guessing the next step would be to trade the magnet for a device that can detect the difference between aluminum and steel
Uhhhh, no. A magnet will stick to steel (or any alloy containing iron). It won't stick to aluminum (or titanium, or magnesium, or any non-ferrous alloy). End of story...
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Old 06-18-07, 03:11 PM
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you could also scrape of the paint on it and let it oxidize, if it rusts it is steel if not its aluminum
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Old 06-18-07, 03:14 PM
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Originally Posted by exas
and i am guessing the next step would be to trade the magnet for a device that can detect the difference between aluminum and steel
Yeah, that device is called a demagnetomometerizer. Three magnets will get you one demagnetomometerizer and what the demagnetomometerizer does is tell you if something is aluminum or steel by sticking to aluminum but not sticking to steel (plus there's an arrow that will will point to "aluminum" if it sticks to aluminum) which is a much more reliable method than the usual sticking to steel/not sticking to aluminum method a regular, stupid ol' magnet uses.

Couldn't resist. Easy but fun.
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Old 06-18-07, 03:31 PM
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Get a magnet and lube it with butter-
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Old 06-18-07, 08:25 PM
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Originally Posted by Wordbiker
A magnet.
The magnet you have for your cyclocomputer would work fine. Put scotch tape on the magnet to prevent scratching of the paint.
Stainless steel is weakly magnetic...on that you can tell by the price of the frame or parts.
If you don't have a magnet then Al will warm to the touch faster than steel.
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Old 06-18-07, 08:29 PM
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Originally Posted by well biked
Get a magnet and lube it with butter-
S/he's on to vaseline now...
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Old 06-18-07, 08:30 PM
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Originally Posted by well biked
Get a magnet and lube it with butter-
Butter the part in question and drop it, aluminum tends to land butter side down, steel lands butter side up.
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Old 06-18-07, 10:18 PM
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Originally Posted by exas
and i am guessing the next step would be to trade the magnet for a device that can detect the difference between aluminum and steel
Is this post serious?
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Old 06-18-07, 10:32 PM
  #12  
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Originally Posted by exas
how to tell the difference between steel and aluminum rims (and other parts of the bike as well)
With a little bit of practice you can tell just by looking. Steel stuff is usually chrome plated, so it's shiny. Aluminum has a duller appearance.

Sheldon "Aluminiminiuminum To Our British Friends" Brown
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Old 06-18-07, 11:04 PM
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Originally Posted by operator
Is this post serious?
If it is, it's a strong contender for the title of "stupidest thing ever written".

If not, it's comedic genius.

And yeah, what ^^^ they said. Magnetomometerizerer
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Old 06-18-07, 11:06 PM
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Originally Posted by operator
Is this post serious?
If it is, it's a strong contender for the title of "stupidest thing ever written".

If not, it's comedic genius.

And yeah, what ^^^ they said. Magnetomometerizererfanglerdoohickeymabob.
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Old 06-18-07, 11:28 PM
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If you cant find a magnet try salt water.
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Old 06-19-07, 02:35 AM
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Originally Posted by operator
Originally Posted by exas
and i am guessing the next step would be to trade the magnet for a device that can detect the difference between aluminum and steel
Is this post serious?
Well, you gotta admit it would be a fair trade.
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Old 06-19-07, 06:12 AM
  #17  
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Steel = heavy as hell.
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Old 06-19-07, 06:51 AM
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Originally Posted by divergence
Well, you gotta admit it would be a fair trade.
Haha.
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Old 06-19-07, 07:00 AM
  #19  
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Originally Posted by Sheldon Brown
With a little bit of practice you can tell just by looking. Steel stuff is usually chrome plated, so it's shiny. Aluminum has a duller appearance.
Actually low-end manufacturers have taken to painting their steel components with a "matte" finish obviouly intended to look like aluminum. I've seen it most commonly on rims but also on stems, bars and cranksets.
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Old 06-19-07, 07:41 AM
  #20  
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Higher grades of stainless steel aren't magnetic either, but I don't think you'll be finding any of that where you're looking...
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Old 06-19-07, 06:31 PM
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Steel is real. If it only exists in your mind, it's aluminum.
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Old 06-19-07, 07:44 PM
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Originally Posted by tellyho
Steel = heavy as hell.
Kidding, right?
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Old 06-19-07, 08:03 PM
  #23  
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Look for the recycling symbol...

Sheldon
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Old 06-19-07, 08:28 PM
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Originally Posted by ScrubJ
Kidding, right?
if you're talking rims, no.
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Old 06-19-07, 09:29 PM
  #25  
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Originally Posted by DMF
Higher grades of stainless steel aren't magnetic either, but I don't think you'll be finding any of that where you're looking...
Depends on what higher grade is. Stainless steel that can be hardened as for knife blades is very strong but less stainless, and is magnetic. More chrome in the mix makes the steel more stainless, more malleable, and non magnetic; try your magnet on the kitchen sink.

Stainless spokes are somewhere between because they are slightly magnetic. I need the magnet to confirm the difference between stainless and shiny new steel spokes.
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