"Cully_J" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Hey folks,
In the "hanging bikes upside down?" thread, someone mentioned that hanging a bike upside down causes the frame too stretch over time.
To be honest, I've never heard of a frame stretching problem until I read that post.
if that's true, could somebody please explain it?
regards, Cully_ J
In said post, note my line, "Must dash, Matron has my medication ready for me to take ;-)" That should provide a clue as to the seriousness of my response ;-)
On Sun, 14 Aug 2005 17:17:54 -0400, "Arthur Harris" <[email hidden]>
Quoted message said:
Cully_J said:
Hey folks,
In the "hanging bikes upside down?" thread, someone mentioned that hanging a bike upside down causes the frame too stretch over time.
To be honest, I've never heard of a frame stretching problem until I read that post.
if that's true, could somebody please explain it?
It's well known that steel frames go soft over time. Eventually, they get so soft that they stretch when hung upside down.
Art Harris
Yes, but if you hang it right side up the following winter it will compress back to it's original size. Also good if you have a Mutt & Jeff team sharing a single bike.
<[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
On Sun, 14 Aug 2005 17:17:54 -0400, "Arthur Harris" <[email hidden]>
Quoted message said:
Cully_J said:
Hey folks,
In the "hanging bikes upside down?" thread, someone mentioned that hanging a bike upside down causes the frame too stretch over time.
To be honest, I've never heard of a frame stretching problem until I read that post.
if that's true, could somebody please explain it?
It's well known that steel frames go soft over time. Eventually, they get so soft that they stretch when hung upside down.
Art Harris
Yes, but if you hang it right side up the following winter it will compress back to it's original size. Also good if you have a Mutt & Jeff team sharing a single bike.
Joe ---
This is almost as bad a when I heard a tire salesman try to tell a woman customer that her tire had a bent steel belt and should be replaced.
<[email hidden]> wrote: Yes, but if you hang it right side up the following winter it will compress back to it's original size. (clip) Rong. Whether you hang the bike right-side-up or upside-down, the weight is stretching the vertical components. A more advanced theory is that the compression during riding is high enough to more than reverse the hanging stretch. Of course, this cannot be exactly true for all rider weights and relative riding/hanging times. Carl Fogel, do you have links to data on this?
I'm gonna hang my bike by the back wheel only, so it can stretch longer. Then I'll put on another seat and make it into a tandem!
~R
"Leo Lichtman" <[email hidden]> wrote in message news:[email hidden]... : : <[email hidden]> wrote: Yes, but if you hang it right side up the : following winter it will compress back to it's original size. (clip) : Rong. Whether you hang the bike right-side-up or upside-down, the weight is : stretching the vertical components. A more advanced theory is that the : compression during riding is high enough to more than reverse the hanging : stretch. Of course, this cannot be exactly true for all rider weights and : relative riding/hanging times. Carl Fogel, do you have links to data on : this? : :
I would be more concerned about the compressed air in the tires. As you know, the air packs down over time and you have to add more on top of the air that is in the tire--unless you have a leak. If you fill your tires at sea level the air is heavier than the air in the mountains. Therefore, you can put more air in your tires at higher elevations.
"Cully_J" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Hey folks,
In the "hanging bikes upside down?" thread, someone mentioned that hanging a bike upside down causes the frame too stretch over time.
To be honest, I've never heard of a frame stretching problem until I read that post.
"Cully_J" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Hey folks,
In the "hanging bikes upside down?" thread, someone mentioned that hanging a bike upside down causes the frame too stretch over time.
To be honest, I've never heard of a frame stretching problem until I read that post.
if that's true, could somebody please explain it?
regards, Cully_ J
Gravity acts on the frame causing it to stretch. Initially, the effect is small, but eventually it can affect handling. The effect is most pronounced at higher latitudes as gravity is less strong at sea level near the equator because of the bulge of the earth in the middle. Typically, if one sits on the bike on a steep hill facing down the hill with the front brake locked for about 1 minute for each hour the bike has been hung, the effect will be nullified. Look for a hill with at least a 10% grade. I think Sheldon Brown has a faq on this, see http://www.sheldonbrown.com/articles.html
If you hang the bike by the front wheel only, and it's a straight-gauge steel frame, you'll eventually get a butted frame. If it's an aluminum frame and you leave it hanging for long enough, eventually the rear half of the bike will fall off the still-hanging front half.
Carbon fibre is unaffected, but it has it's own problem, in accumulating static electrical charges and zapping the rider.
cheers, Tom
-- -- Nothing is safe from me. Above address is just a spam midden. I'm really at: tkeats [curlicue] vcn [point] bc [point] ca
Gravity acts on the frame causing it to stretch. Initially, the effect is small, but eventually it can affect handling. The effect is most pronounced at higher latitudes as gravity is less strong at sea level near the equator because of the bulge of the earth in the middle.
The bulge at the equator is only part of the effect. Don't forget, there is a lot of centripital acceleration at the equator that is less at the poles.
BTW, this is the reason people are so much happier at the equator, because things are less grave (due to less gravity, the opposite of happiness).
"AustinMN" wrote: (clip) BTW, this is the reason people are so much happier at the equator, because things are less grave (due to less gravity, the opposite of happiness). ^^^^^^^^^^^^^^^^ People are happier at the equator because they "get around" more. People at the poles don't get around at all--they turn in place. It must be very dull.
The opposite of gravity is levity. If we had more levity, bicycle frames would't stretch at all--so this thread serves a useful purpose.