Only now have I found out Pinarello's Dogma frame is made of magnesium. Does anyone have experience with magnesium frames? How does magnesium as a frame material compare to the other materials out there?
Thx.
Thx.
Magnesium frames - any experiences?
1 reading
dd74
21 - 33 of 33 Posts
Joined
·
216 Posts
I like carbon everything, the problem is that it costs so damn much.
Joined
·
5,123 Posts
It surprises me how many bad things can be thought about something. Just like carbon fiber bikes when they first came out. Or Aluminum...
I do remember in high school (or intermediate?) our teacher took a strip of magnesium and lit it with a blue flame. She had a student hold his hand underneath it. The strip burned white-hot, and the ashes fell to the student's hand and did not burn, as it loses it heat when burns.
Magnesium felt like a soft metal to me too from what I remember. I'm sure it's an alloy used in bikes to make it stronger and more corrosion resistant. The question I'd really ask is, is it worth it? You can get a 953 steel frame for probably the same or less.
I do remember in high school (or intermediate?) our teacher took a strip of magnesium and lit it with a blue flame. She had a student hold his hand underneath it. The strip burned white-hot, and the ashes fell to the student's hand and did not burn, as it loses it heat when burns.
Magnesium felt like a soft metal to me too from what I remember. I'm sure it's an alloy used in bikes to make it stronger and more corrosion resistant. The question I'd really ask is, is it worth it? You can get a 953 steel frame for probably the same or less.
Joined
·
192 Posts
my Dogma
I have an ex-pro Dogma that I absolutely love. The ride quality is very similar to a good steel bicycle, but is quite a bit lighter.
With the new ultralight carbon bikes that are out there, I've been a bit hesitant to get excited about something that is paper-thin or that will shatter from a crash.
There are no worries like this with the Dogma. The thing is truly beefy.
Here's a picture and the specs
I have an ex-pro Dogma that I absolutely love. The ride quality is very similar to a good steel bicycle, but is quite a bit lighter.
With the new ultralight carbon bikes that are out there, I've been a bit hesitant to get excited about something that is paper-thin or that will shatter from a crash.
There are no worries like this with the Dogma. The thing is truly beefy.
Here's a picture and the specs
Joined
·
481 Posts
I've asked several Paketa owners in CO about their rides and they were all fanatical in their praise. Most of them seem to have been hooked up with a "deal" - not sure how many are paying full retail.
Joined
·
216 Posts
Joined
·
943 Posts
There's also an Israeli brand of magnesium road bikes: Segal
http://www.velonews.com/article/89199
These are welded frames, and they didn't burst into flame when welded, so I figure it's fairly safe.
http://www.velonews.com/article/89199
These are welded frames, and they didn't burst into flame when welded, so I figure it's fairly safe.
The head studs were al. from what I remember, and did not mix well with the mag. case. Every now and then while the car is on a lift, the head studs can be tightened down if lose.
Anyway, the mag case really went away when California demanded smog emissions and Porsche installed thermal reactors in place of heat exchangers (headers). The reactors would heat the engine up so high, things would melt. This was one of the issues that brought along the 3.0 SC engine and later, the 3.2, which arguably are the best motors Porsche has ever produced.
Anyway, the mag case really went away when California demanded smog emissions and Porsche installed thermal reactors in place of heat exchangers (headers). The reactors would heat the engine up so high, things would melt. This was one of the issues that brought along the 3.0 SC engine and later, the 3.2, which arguably are the best motors Porsche has ever produced.
Joined
·
833 Posts
I do recall seeing some RockShox Mag21 (I think they were actually the Specialized branded version) fork lowers that had pretty much dissolved (mainly under the boots) after a winter of riding (salted roads) so I can only assume that the stuff is high susceptible to corrosion. I'd suggest riding it in fair weather and touching up any chips or scratches.
21 - 33 of 33 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
