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What's the real deal on magnesium?(15 posts)

What's the real deal on magnesium?hayaku
May 18, 2003 1:13 AM
I have been looking around and found this bike. It's made by a Japanese company so the info I can get is a little sketchy. I did get this little blurb translated however...

Magnesium which has the excellent vibration absorption character whose the strength of the gravity comparison, stiffness are the highest as a metal material. Magnesium road frame of Japanese appears in the latest technology. A flexible feeling of stiffness is realized in the ordinary lightness as a light weight aluminum frame.

Yeah, well...

What's the real scoop on this material? Is it stiff, comfortable, highly flammable??? Are there problems with rust or corrosion?

The price is pretty cheap, I thought magnesium was expencive.

Thanks for your input.
Hang on... How do they weld it? nmhayaku
May 18, 2003 1:18 AM
May 18, 2003 7:56 AM
why does everyone get all freaked out about magnesium? There are magnesium pedal bodies, stems, and baseball/softball bats, lawn mower decks, etc... almost any welder skilled enough to work with aluminum can handle magnesium.

Besides, we are almost always talking about alloys anyway. Nobody rides a bike made out of pure IRON now, do they?

My guess is that there are other deficiencies, whether it be strength or "the ride" that keeps magnesium in the shadows as a frame material.
another manufacturerFORT-Cyclist
May 18, 2003 1:35 AM

they seem to be the leader in magnesium technology.
but not many infos on their page.
to prevent magnesium from burning during the welding process you have to keep out the oxygen.
re: What's the real deal on magnesium?bugleboy
May 18, 2003 4:07 AM
I remember hearing that magnesium is highly corrosive if not treated correctly.
I still can't believe they named a bike "Anchor."Sintesi
May 18, 2003 4:23 AM
Aren't there any weight weenies in Japan?
"Anchor" is at least better than a standard Japanese translatedsn69
May 18, 2003 4:43 AM
name. I'd expect the bike to be named something more like:
"Happy happy go fast round wheel zoom." Still, that's hard to fit on the downtube.
Typical "Engrish"Alexx
May 18, 2003 10:50 AM
I once saw a can of some sort of fish, packaged in Japan. The brand name was "Nau-Sea"!
Still, Mg is tough stuff to work with. Also, you need very specialized welding equipment, otherwise your frame will become a highway flare! Being that the bike is Japanese, I'm assuming that it's just a novelty. nmcollinsc
May 18, 2003 12:23 PM
magnesium is the $%@$stinkfoot247
May 18, 2003 9:12 AM
wooooow. I was making thermite (Fe2O3) one day cuz I planned on melting the local fire department trucks and stealing their soda pop machines. I got the stuff made and transported it to the scene via bike. Man, I forgot the damn magnesium ribbon to lite the thermite with. Good thing I had my foreign magnesium woooooow bike to initiate the reaction. I didn't have to walk home cuz I was wearing a pink tutu and somebody thought I looked cute enough to get a ride. So: never leave home without your Mg bike.
I almost believed you, but you forgot the aluminumContinental
May 18, 2003 5:50 PM
Thermite is 25.3% aluminum and 74.7 Fe2O3 (common rust). So, you need a rusty old Steelman and a Klein ground to a fine powder and mixed uniformly, and a strip of Mg of the Anchor to ignite it.
magnesium?? .... possible manganesebenja15
May 18, 2003 6:09 PM
pure magnesium is a highly reactant, corrosive, flamable and soft material

it is used to harden metals

it is more likely that it is an alloy of magnesium or a manganese frame
No, it's really magnesiumAlexx
May 19, 2003 3:42 AM
And, yes, it doesn't make a whole lot of sense, but it does have it's uses. Manganese (Mn) is/was used as an alloying element in steel tubing. Reynolds 531, for example, is a Manganese-Molybdenum alloy of steel.
Magnesium (Mg)has good strength/weight properties, but it is highly reactive. Highway flares use magnesium to burn brightly. About 30 years or more ago, formula 1 race cars sometimes used Mg as a frame material. Then, there was a crash that resulted in a fire, and the fire couldn't be put out easily. As a result, Mg is no longer used in F1 car frames.
The kid who works at my LBS...Mr Good
May 18, 2003 6:40 PM
...sold me a seat that says "Manganese" on the rails. When I ask him "what's Manganese?" he says "No, that says 'Magnesium'."

I tell him "No it doesn't, it says "Manganese'." He looks at it closely, then confidently states "Yes it does, it says 'Magnesium'."

Hard to find good help these days.
Suspension fork lowers are made from Magnesiummhinman
May 19, 2003 6:06 AM
Even the cheap ones.