What kind of bike is this?
 

I saw an old Trek, perhaps 15 years old or so... the top tube looked
like it had another top tube that runs just below and parallel to it.
I think the bike was a Trek 470, 400 or 520 or something like that.
What kind of bike is this... meaning from what year(s), and why did
they make the top tube like that?

What kind of bike is this?
 

On 25 Sep 2006 20:11:37 -0700, "martin lynch"
wrote:


I saw an old Trek, perhaps 15 years old or so... the top tube looked
like it had another top tube that runs just below and parallel to it.
I think the bike was a Trek 470, 400 or 520 or something like that.
What kind of bike is this... meaning from what year(s), and why did
they make the top tube like that?

Are you sure that wasn't a frame pump clipped in just below the top
tube? From a distance, that looks like a second tube.

--
Typoes are a feature, not a bug.
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What kind of bike is this?
 

"martin lynch" writes:

I saw an old Trek, perhaps 15 years old or so... the top tube looked
like it had another top tube that runs just below and parallel to it.
I think the bike was a Trek 470, 400 or 520 or something like that.
What kind of bike is this... meaning from what year(s), and why did
they make the top tube like that?

Sometimes this is done with gigantic bicycles, i.e. 27" framesets and
larger, to get a stiffer frame.

- Don Gillies
San Diego, CA

What kind of bike is this?
 

On 26 Sep 2006 10:26:59 -0700, (Donald Gillies) wrote:

"martin lynch" writes:

I saw an old Trek, perhaps 15 years old or so... the top tube looked
like it had another top tube that runs just below and parallel to it.
I think the bike was a Trek 470, 400 or 520 or something like that.
What kind of bike is this... meaning from what year(s), and why did
they make the top tube like that?

Sometimes this is done with gigantic bicycles, i.e. 27" framesets and
larger, to get a stiffer frame.

Also seen in third world working bikes.

Ron

What kind of bike is this?
 

"Donald Gillies" wrote in message
...
"martin lynch" writes:

I saw an old Trek, perhaps 15 years old or so... the top tube looked
like it had another top tube that runs just below and parallel to it.
I think the bike was a Trek 470, 400 or 520 or something like that.
What kind of bike is this... meaning from what year(s), and why did
they make the top tube like that?

Sometimes this is done with gigantic bicycles, i.e. 27" framesets and
larger, to get a stiffer frame.

- Don Gillies
San Diego, CA

The old English "Bobbie" Policemen's bikes had 2 top bars also.

Chas.