B
Benjamin Lewis
Guest
[email protected] wrote:
> <[email protected]> wrote:
>> Oop! Sorry Carl, not only is this not clear, it's not even correct!
>> Only the straight portion of the wire will have no net tension using
>> this method.
>>
>> This doesn't affect anything that Luns has said on the subject, however.
>
> Dear Benjamin,
>
> Would this be the idea?
>
> T
> O T
> N --> N N N N N N
> FFFFFFFFFFFFFFF
>
> N = no-tension straight portion of wire
> F = flat surface
> O = round pen wire is being coiled around
> T = wire under tension
>
> That is, the tension bends the wire upward as it rolls
> counter-clockwise onto the pen?
Yes, exactly. (This is not how Luns made his spring, though).
In fact, I believe that if you properly constrained the wire, you could
make a preloaded spring where the bending was done under a net compression.
For example, look at the wire in the process of being wrapped on the page
Luns has showed us. Now, with the wire frozen in place, hollow it out so
that it forms a hollow cylinder, and imaging *pushing* a wire through this
cylinder.
I'm sure there's an easier way to do this, but that should provide a
sufficient conceptual picture to see that it can be done.
--
Benjamin Lewis
"Love is a snowmobile racing across the tundra and then suddenly it flips
over, pinning you underneath. At night, the ice weasels come."
--Matt Groening
> <[email protected]> wrote:
>> Oop! Sorry Carl, not only is this not clear, it's not even correct!
>> Only the straight portion of the wire will have no net tension using
>> this method.
>>
>> This doesn't affect anything that Luns has said on the subject, however.
>
> Dear Benjamin,
>
> Would this be the idea?
>
> T
> O T
> N --> N N N N N N
> FFFFFFFFFFFFFFF
>
> N = no-tension straight portion of wire
> F = flat surface
> O = round pen wire is being coiled around
> T = wire under tension
>
> That is, the tension bends the wire upward as it rolls
> counter-clockwise onto the pen?
Yes, exactly. (This is not how Luns made his spring, though).
In fact, I believe that if you properly constrained the wire, you could
make a preloaded spring where the bending was done under a net compression.
For example, look at the wire in the process of being wrapped on the page
Luns has showed us. Now, with the wire frozen in place, hollow it out so
that it forms a hollow cylinder, and imaging *pushing* a wire through this
cylinder.
I'm sure there's an easier way to do this, but that should provide a
sufficient conceptual picture to see that it can be done.
--
Benjamin Lewis
"Love is a snowmobile racing across the tundra and then suddenly it flips
over, pinning you underneath. At night, the ice weasels come."
--Matt Groening