need spring-energy-storage mechanism

On Fri, 01 Jun 2007 12:21:33 -0500, Brian Whatcott wrote:
On Fri, 01 Jun 2007 06:19:31 -0700, "John S." wrote:
On May 29, 5:53 am, wrote:
i think i need a spring energy-storage mechanism. Maybe a very large
wind-up clock motor?
...
I've come to the conclusion the author of this post is just another of
the internet trolls described in Wikipedia. One vaguely worded
question asking about using a spring powered bicycle to transport a
bushel of something of modest value from somewhere to somewhere. And
no further response.

John is disturbed, because the poser of the question has not
responded. This response in newsgroups is not in fact unusual.

It reminds me that the US culture requires both a
"Thank you" for help from the helpee, and a "You're welcome"
from the helper, to be in good form.

But it is probably better to act as though one responds to requests
for input simply for one's own amusement or education.

I think what the googlies do is ask their question and expect an answer to
pop up (or whatever) instantaneously. A few minutes pass, and they lose
interest and move on to something else, and disappear into the mists of
googledom. ;-)

Cheers!
Rich

default wrote:

He won't describe the cargo in more detail or the mountain?


For all we know, he may be making a mountain out of a molehill.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

On Fri, 01 Jun 2007 18:43:48 GMT, "Michael A. Terrell"
wrote:

default wrote:

He won't describe the cargo in more detail or the mountain?


For all we know, he may be making a mountain out of a molehill.


More likely the converse.
--

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default wrote:

On Fri, 01 Jun 2007 18:43:48 GMT, "Michael A. Terrell"
wrote:

default wrote:

He won't describe the cargo in more detail or the mountain?


For all we know, he may be making a mountain out of a molehill.

More likely the converse.


That will take a LOT of moles! ;-)


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

On 1 Jun, 00:40, Donald wrote:
wrote:
[...]

A 2 pound flywheel can store 4 man-hours of energy at about 80%
efficiency. This is a 5X better power to weight ratio than batteries.
(still only a fraction of that of gasoline).

Interesting calculation, where did you find it ?

Where you someone buy a 2 pound flywheel ?

donald

It's a standard physics formula.
Actual calc' from a 1910 motor car design hanbook. Also
http://zebu.uoregon.edu/2001/ph162/l8.html is one of the few sites
that bothers to do some sums.
There's also a number of really interesting research project sites
investigating details of materials, containments, bearings, hoop
stresses etc.
First interest in these things came from a 2 (1 ton each!), flywheel,
experimental, monorail railway system in a 1912 science book (UK).

On Jun 1, 1:21 pm, Brian Whatcott wrote:
On Fri, 01 Jun 2007 06:19:31 -0700, "John S." wrote:
On May 29, 5:53 am, wrote:
i think i need a spring energy-storage mechanism. Maybe a very large
wind-up clock motor?
...
I've come to the conclusion the author of this post is just another of
the internet trolls described in Wikipedia. One vaguely worded
question asking about using a spring powered bicycle to transport a
bushel of something of modest value from somewhere to somewhere. And
no further response.

]

John is disturbed, because the poser of the question has not
responded. This response in newsgroups is not in fact unusual.

It reminds me that the US culture requires both a
"Thank you" for help from the helpee, and a "You're welcome"
from the helper, to be in good form.

Yes, I realize that some newsgroup participants behave as though they
were born in a barn. Thank yous are not being looked for, but if
someone poses a technical question, I think that most of us living in
civil society would expect some response about whether the information
was useful.

Apparently expectations of behaviour and common courtesy are somewhat
lower Altus OK that the rest of the US.


But it is probably better to act as though one responds to requests
for input simply for one's own amusement or education.

If you will take the time to go back and read the original posters
message it was so poorly written and imprecise that my first
impression was this guy is just bored and composing something that
will generate some responses. Looking for attention as many trolls
are. That he failed to recognize any of the posts only served to
affirm that initial conclusion.



Brian Whatcott Altus OK

In article , Donald
says...
wrote:
On 29 May, 10:53, wrote:

i think i need a spring energy-storage mechanism. Maybe a very large
wind-up clock motor?

the scenario is: a slightly-valuable commodity originates at the top
of a mountain. More or less a bushel at a time. there is an existing
paved road. the commodity fetches a price, but not enough to pay for
very much transport.

the concept is to use a cargo bicycle, maybe with trailer, to carry
the items down to the bottom of the mountain, "winding up the clock"
on the spring-storage.

at the bottom, the load is transferred to buyers. the now very-much-
lighter bicycle is to be driven UP the mountain, using the stored
energy.

Any cat which will catch the mice is fine with me. I'm just thinking
that anything involving electricity, hydraulic fluids, etc, will be
too involved, and losses throguh two conversions. Capacitor storage
might be feasible, if there's high quality ones being sold. The charge
doesn't need to held for long amounts of time. Down the hill, then
back up.

Ideally, this will be a ready-to-go or mostly ready-to-go
commercial item. I am rather mechanically/electrically handy. But
this is business, not pleasure. Time spent should be cost-effective.


A 2 pound flywheel can store 4 man-hours of energy at about 80%
efficiency. This is a 5X better power to weight ratio than batteries.
(still only a fraction of that of gasoline).


Interesting calculation, where did you find it ?

And what's a man-hour of energy?

Robert

--
Posted via a free Usenet account from http://www.teranews.com

Brian Whatcott wrote:

On Fri, 01 Jun 2007 06:19:31 -0700, "John S." wrote:

On May 29, 5:53 am, wrote:
i think i need a spring energy-storage mechanism. Maybe a very large
wind-up clock motor?
...
I've come to the conclusion the author of this post is just another of
the internet trolls described in Wikipedia. One vaguely worded
question asking about using a spring powered bicycle to transport a
bushel of something of modest value from somewhere to somewhere. And
no further response.
]

John is disturbed, because the poser of the question has not
responded. This response in newsgroups is not in fact unusual.

It reminds me that the US culture requires both a
"Thank you" for help from the helpee, and a "You're welcome"
from the helper, to be in good form.

But it is probably better to act as though one responds to requests
for input simply for one's own amusement or education.

Ha ha ha, one's own amusement and education? You mean there might not be
a mountain? No profitable sale of a commodity if only the transportation
can be worked out? Wait I suppose that also means the OP won't be making
a million dollars and coming back to share the wealth with all those who
provided assistance? Man what a disappointment.

-jim

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On 2 Jun, 04:17, Robert Adsett wrote:
In article , Donald
says...


[...]

And what's a man-hour of energy?

Robert

A more user friendly version of 0.05kWh

If you will take the time to go back and read the original posters
message it was so poorly written and imprecise that my first
impression was this guy is just bored and composing something that
will generate some responses.


that's your view. My view is that I was not disclosing the
information which would enable someone else to come into my desired
niche.


I requested information about spring storage. There was a flood of
posts about ropes, pulleys, and etc that couldn't possibly work in the
geo setting. Hey, if a funicular or a tramway was indicated, there are
pro's out there who will build them for me. And not difficult to find,
either.

There was also a stream of posts about incomprehensible nonsense.


. That he failed to recognize any of the posts only served to
affirm that initial conclusion.

I thought I was being polite, in not consuming bandwidth and
archive resources, to respond to not-on-point nonsense.


I'm not complaining; for free I don't expect to get much valuable
information. Usenet is the Tragedy of the Commons writ large. But as
Warren Buffet observed, there's still money to be made occassionally
by picking nickels up off the streets.