HDTenEightyP/NetNews huggingface dataset:
From: tomk@netcom.com (Thomas H. Kunich)
Subject: Re: Power needs on recumbents vs. diamond frames (was: Recumbents)
Organization: Netcom - Online Communication Services (408 241-9760 guest)
Date: Sat, 23 Jan 1993 01:36:39 GMT

In article <cma851.727678669@huxley> cma851@huxley.anu.edu.au (Brenton LeMesurier) writes:
>
>    If someone suggests that the recumbent allows higher forces by
>pushing back on the seat, ~

You can put _lots_ more pressure onto the pedals this way. But that isn't
the full story. You _still_ have to push the pedals through the dead spot
at top-dead-center and bottom-dead-center (full-front-center and full-rear-
center?) so even though you can push a much greater force, you still can't
take any more advantage of it than you do on a diamond frame bicycle.

>    Do not take this rejection of one argument for recumbents as a
>general attack on them: I would like the chance to try a day ride on
>one, to experience for myself the trade-offs of genuine advantages such
>as aerodynamics against things like greater weight.

I agree that there are trade-offs and that in some areas a recumbent
might be preferable. I've seen that handicapped riders often have an easier
time of it on recumbents. And people with back problems can still bike on 
recumbents in some cases.

But the aerodynamic advantage isn't very great and the Scientific American
article on human powered vehicles from the '70's (and authored by the
president of the HPV Association) made it plain that recumbents aren't
any faster, on the average, than uprights.

Now, a streamlined recumbent will definitely be faster than any other
bike. But you will remember that the teams on the streamliners in the
RAAM complained bitterly about how difficult the vehicles were to ride.
From: peter@helix.ObjecTime.on.ca (Peter Epstein)
Newsgroups: rec.bicycles.misc
Subject: Re: Chain Tool
Date: 26 Jan 93 20:08:40 GMT
Organization: ObjecTime Limited

On most chains you can remove any link to break the chain.  Make sure the
pin is being pushed straight out, and then crank until the pin is almost
all the way through the inside back link.  Remove the tool and bend the chain
slightly to separate.  If too hard, go another half turn and try again.
To reattach, thread the chain properly through both derailleurs, and then
snap the chain back together (that's why you leave the pin sticking in
slightly).  Now put the tool on the other way and press the pin back in,
making sure the pin is going in straight.  If your chain can spare losing
a link, you can just throw away one link and keep your old chain.  To see
whether you can spare losing one link, put the chain on the largest cog
and largest chainring.  If the rear derailleur can handle it, go for it.
Even though you never use such cross gears, its nice to know that a
mistake in shifting won't break something.  By the way, the Park chain
tool is a good one, as they go.

-- 
   ,__o                                                  ,__o
 _-\_<,     Peter Epstein   peter@objectime.on.ca      _-\_<,
(*)/'(*)                                              (*)/'(*)
Newsgroups: rec.bicycles.misc
From: don@island.COM (Don Hermes)
Subject: Re: Drivers and Bikers
Organization: /usr/local/rn/organization
Date: Wed, 27 Jan 1993 18:26:30 GMT

In article <C19r6M.E46@news.rich.bnr.ca> rob@bnr.ca (Robert Perkins) writes:
>......  Face it, U.S. citizens are lazy-ass drivers who confuse
>their cars with their penises.
>
>Rob


Now I understand.
........ That's not my car double parked over there. That's my penis.
........ Honest officer my penis can't even go 75 mph.


Don
don@island.com
Organization: Penn State University
Date: Sun, 24 Jan 1993 11:50:41 EST
From: <JMN101@psuvm.psu.edu>
Newsgroups: rec.bicycles.misc
Subject: Re: A Quick Survey
Distribution: uk

In article <11432@baird.cs.strath.ac.uk>, dmarsh@cs.strath.ac.uk (David R Marsh
CS91) says:
>
>A quick survey about all things cyclewise.
>
>Do you cycle on roads at all?
>
  yes
>Do you cycle on major roads at all?
>
  yes
>Do you cycle on major roads (especially dual carriageways) outwith towns?
>
>What do you think of the attitude of car (bus etc) drivers?
>
 Often, I get the feeling that they view me as a problem
 not as someone who is as entitled to use the road as they are.
>Do you think cyclists get enough respect?
>
  most of the time, no.
>Do you feel safe cycling on roads?
>
  Roads that do not have a lot of traffic, yes.  Roads with
   heavy traffic and high speed limits, no.
>Do you think enough is done to improve conditions for cyclists?
>
  not in this town (State College, PA)
>...and how do you think this should be done (cycleways, cycle lanes, or what)?
>
  Education and wider roads.
>What is your normal mode of transport?
>
  bicycle to and from campus and for fun.  Car for longer trips.
>How do you transport your bike (when not actually cycling!)?
>
  rear rack on car.
>Are you a member of a cycle club or campaign group?
>
  no
>What do you think of current transport policy?
>
>Do you think that bike carriage on trains is important?
>
  yes
>What are the main uses of your bike?
>
 transportation and exercise.
>What sort of bike(s) do you have (mountain bike, recumbent, racer etc)?
>
 mountain bike and road bike
>What do you think of law-breaking cyclists?
>
 I think that they make it that much harder for those of us who
  do obey the law to get the respect that we need from drivers.
>(And I suppose I have to ask) do you wear a helmet?
>
  yes

Jenae
Newsgroups: rec.bicycles.misc
From: etxorst@eos.ericsson.se (Torsten Lif)
Subject: Re: Recumbents
Reply-To: etxorst@eos.ericsson.se
Organization: Ericsson Telecom AB
Date: Thu, 21 Jan 1993 08:47:37 GMT

In article 727585632@huxley, cma851@huxley.anu.edu.au (Brenton LeMesurier) writes:
>    There is a confusion here between force and work: since
>
>work= force times "speed component in the direction of the force",
>
>the legs can generate the force necessary to hold the body up against
>gravity without doing any mechanical work.
>
>    Further they do it with very little use of metabolic energy.  This
>can be seen with a simple (thought) experiment: sit down for a while,
>monitoring you pulse and breathing rate, and then do the same after
>standing for a while.  They will of course show that it takes very
>little extra exertion to support you weight standing (as on a diamond
>frame, sometimes) than sitting (as on a recumbent).

Beware of armchair physics. There is a world of difference between the
concept of "work" as defined by school physics and the dynamics of
actually *riding* a bike. Your example is flawed because it relied on
the support of rigid structures. The chair in one case and your locked
knees in the other. It takes very little muscular force to keep your
knees straight and this is why you can stand up with little effort. But
try this for a change: Remain in the "sitting" position you had on the
chair but remove the chair so that you now have to support your weight
with your muscles only (knees at 90 degrees). Let's see how many
seconds of statich work you can do. If you're embarrassed by doing
gymnastics in front of your screen you can try a simpler one. Raise
your right arm to a straight horizontal and keep it extended at right
angles to your body. Don't move it up or down, don't flex your fingers.
Just keep it absolutely still and enjoy the sensation of lactic acid
building up in your muscles. How many minutes can you do? Remember,
it's not moving so you're not doing any work. So how come you feel
tired?

>Brenton LeMesurier
>Department of Mathematics, Australian National University
>GPO Box 4 Canberra 2601 Australia
>Email: B.LeMesurier@anu.edu.au  Phone: (61) 6-249-3829  FAX: -5549

---
 Torsten Lif                          |   Big cars are a Freudian 
 Ericsson Telecom AB, EO/ETX/TX/AD    |   compensation for their drivers
 S-126 25  STOCKHOLM, SWEDEN          |   own perceived inadequacy.
 Tel: +46 8 719 4881                  |

Newsgroups: rec.bicycles.misc
From: lous@sr.hp.com (Louis Salz)
Subject: Re: Bicyclist killed in suspicious hit-run
Date: Mon, 25 Jan 1993 22:19:46 GMT
Organization: HP Sonoma County (SRSD/MWTD/MID)
X-Newsreader: TIN [version 1.1 PL8.1]

f0471913@jaguar.csc.wsu.edu (f0471913@jaguar.csc.wsu.edu) wrote:

: California law dictates that groups of biyclists must ride single file.

I don't think the California vehicle code ever states this.  If they were 
in the bike lane, this is a non issue.

: Now
: don't get me wrong, I'm not saying that riding double file contributed to the
: accident - my point is that the woman's defense lawyer will push this fact for
: all it's worth. 

I doubt that is a approach that will be used.  I suspect they will try to
make her look as mentally incompetent as possible.
From: dmarsh@cs.strath.ac.uk (David R Marsh CS91)
Newsgroups: rec.bicycles.misc
Subject: Re: A quick survey
Date: 25 Jan 93 15:54:01 GMT
Distribution: uk
Organization: Comp. Sci. Dept., Strathclyde Univ., Glasgow, Scotland.
Originator: dmarsh@hunter-07.cs.strath.ac.uk

In case anybody was wondering why I'm keeping quiet for the time being, it's
because I've only seen a handful of replies to the survey so far and I'm    
waiting to see if there will be any more before trying to come to any       
conclusions. Interestingly, I've only had one reply from the UK so far, despite
that being where the survey was aimed at. (OK, who's going to confess to having
a leak out there? :-)

Thanks to everybody who has responded so far.

Dave.
Newsgroups: rec.bicycles.misc
From: asrbh@acad2.alaska.edu
Subject: Re: Bike-only Households
Organization: University of Alaska
Date: Mon, 25 Jan 1993 23:44:43 GMT

In article <freshair.727903387@vincent2.iastate.edu>, freshair@iastate.edu (James W Gregory) writes:
> In <1jrl9vINNc1f@uwm.edu> thelma@csd4.csd.uwm.edu (Thelma Lubkin) writes:
> 
>>    I'm interested in the transport solutions of bike-only households.

> .. I built my own
> trailer for carrying lumber (I, too, don't have a car). 

>    Since that time I've built three other trailers, each time
> improving on the original design.  My current trailer, which I made
> using aluminum tubing, carries four weatherproof containers, each of
> which can carry two bags of groceries at a time.  The containers lift
> out of the trailer frame, allowing me to carry lumber (a necessity!),
> bicycles, yard waste, cases of food, etc. (all of which people have
> paid me to carry at one time or another).

I (and probably others) would be interested in the trailer design.
Perhaps a descriptive posting is in order...or a new business. 

> For snow and ice, I highly recommend studding your tires with
> automobile tire studs.

Self made studded tires usining 3/8" #8 self tapping sheet metal screws
works best for me.  Usually replace the screws twice a winter (6-9 months
here) at a cost of about $4 per replacement.  Liner(s) to protect the
inner tube are required.

>    Getting by with just a bike alone is not difficult, it just takes a
> little imagination and a lot of committment to go against the
> status-quo...

I am always amazed at the reactions of people when they realize I do use
a bicycle exclusively...

>     Good luck.

ditto!
{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}
{}                              Weep not for the dead, they   {}
{}  Randy Hart                  are but empty cages from      {}
{}  ASRBH@ACAD2.ALASKA.EDU      which the bird has flown.     {}
{}  Anchorage, Alaska                Tibetian Book            {}
{}                                    of the Dead             {}
{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}
From: praetzel@maxwell.uwaterloo.ca (Eric Praetzel)
Newsgroups: rec.bicycles.misc
Subject: Re: Power needs on recumbents vs. diamond frames (was: Recumbents)
Date: 26 Jan 93 17:44:07 GMT
Organization: University of Waterloo

One small comment.
From the VO2 data (power, pulse, VO2, VCO2, breath rate ...) I have and have
seen it is usually 10% more efficient to be suppine.  So for the same amount
of O2, water, energy you can go 10% father when suppine.  This is fine upto
the AT plus a bit.  In my case my AT is about 250W and I am fine upto 280W.
When I cross 280W my breath rates starts to climb and it quickly becomes
less efficient than an upright bike.  In an upright bike people usually 
put out a bit more power than when they are supine.
  The only conclusion is that if you car about fast racing then get supine.
As long as full out exertions are not part of the event (ie TTs RAAM ..) then
you are much better off in a supine position.
  The difference in "efficiency" (ie converting O2 to mech. energy) can vary
greatly amoung people and does not seem to be trainable.  The difference
between myself and close_to_national_calibre runners is about 30%.  It is
not that they have a huge VO2 max but that they can use the O2 they get
very efficiently.
  - Eric 
Newsgroups: rec.bicycles.misc
From: robishaw@asteroid.lrmsc.loral.com (Gary Robishaw x5960)
Subject: Re: Punishment for the Driver!
Organization: Loral Rolm Mil-Spec Computers
Date: Thu, 21 Jan 1993 21:19:42 GMT

In article <1993Jan21.015201.28851@CSD-NewsHost.Stanford.EDU> les@cs.stanford.edu writes:
>Gary Robishaw writes:
>
> I myself have been known to raise my middle
> finger to a particularly obnoxious motorist. When I first heard of this
> incident, I shuddered to think that it might have been (unjustifiably) provoked
>  by just such a 'salute'. I hope that the next time I start the middle finger
>  wave, I remember this incident and that there are drivers like this out there.
>
>Don't worry about it.  I've been doing this for 58 years so far and
>have been rammed only once in a hit-and-run. 
>
>I may someday become a statistic, but I bet that it will not be a
>result of asserting my rights on the road.  More likely the result of
>some nitwit's incompetence or pre-existing malice.
>
>--
>Les Earnest           Phone:  415 941-3984    Fax: 415 941-3934
>Internet: Les@cs.Stanford.edu              USMail: 12769 Dianne Drive
>UUCP: . . . decwrl!cs.Stanford.edu!Les         Los Altos Hills, CA 94022

You missed this part Les. I guess the reference to excersizing your rights in
in real time was incorrect. I should have stated that my belief is that we
shouldn't communicate with provactive gestures.

>I don't advocate that anyone change their riding habits to those of a timid
>rabbit, just alter your communication skills to exclude 'American Sign
>Language'.

So go ahead and do what you will, the 'advice' I gave was free, and you get
what you pay for.

Keep the shiny side up.

Gary

-- 
Gary Robishaw          "He has a constitutional right to be not guilty."
robishaw@monolith.lrmsc.loral.com       Steven Barrucci after John Gotti's
408/432-5960                          sentencing.
Usnail -- 3151 Zanker Rd. San Jose, Ca. 95134-1928
Newsgroups: rec.bicycles.misc,uk.transport
From: igb@fulcrum.co.uk (Ian G Batten)
Subject: Re: A Quick Survey
Organization: Fulcrum Communications
Distribution: uk
Date: Mon, 25 Jan 1993 15:07:27 GMT

In article <1993Jan25.145659.2845@titan.inmos.co.uk> rob@inmos.co.uk (Robin Pickering) writes:
>    On my route to work there is a section of the A38 which has two lanes
> in one direction and one in the other with double white "no overtaking"
> lines between them. This section is on a bend at the bottom of a hill
[...]
> I am generally cycling at around 20mph through here and 100% of following
> vehicles will overtake me. To do this they have to cross the line and
> partially enter the other lane.
> 
> This is all of course completely illegal and each of these drivers

Is it?  Crossing double white lines is, as I understand, a Highway Code
transgression.  If you are involved in an accident whilst doing it, it
can be held against you.  Otherwise it's not of itself an offence.
Someone will, no doubt, correct me if I'm wrong.

ian
From: dahls@fhydra.dnet.unit.no (Joern Yngve Dahl-Stamnes)
Newsgroups: rec.bicycles.misc
Subject: Re: Punishment for the Driver!
Date: 27 Jan 93 17:27:05 GMT
Reply-To: dahls@fhydra.dnet.unit.no (Joern Yngve Dahl-Stamnes)
Organization: University of Trondheim, NORWAY

Thus spoke the keyboard of Thomas Driemeyer:
>In article <1993Jan22.160616.22861@seer.gentoo.com> bll@seer.gentoo.com (Brad Lanam) writes:
>>    They're supposed to be an incentive to carpool.  I don't know why
>>they won't raise the gasoline tax.  We have about the cheapest tax in
>>the world (14 cents / litre; most of Europe is around 75 cents a litre;
>>The Economist Jan 9th-15th '93).  Would do a whole lot more good.
>
>I doubt it. They talk about an increase of the gas tax again here, but
>people will simply pay it. A better way would be to create an alternative,
>such as public transportation, and to take steps to reduce the need to
>commute. As long as there is a shortage of cheap housing and a shortage
>of jobs, and as long as there are bedroom communities, people will have
>no choice but to pay.

Several years ago a political party suggested that gasoline tax was
increased, but that everyone (regardless if they had a car or not) got a
lower income tax. This would reduce the total tax for a person who drove
less than about 10.000 km a year, while those who drove more than 10.000
km would have to pay more tax than before.

As a biker, I really liked this idea. It will give me much more money to
buy bikes and bike parts for ;-). But sofar this idea has not been
adopted 8-(.

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+--+-+-+-+-+-+-+-+
* I went back to my mother,           * Joern Yngve Dahl-Stamnes             *
* I said, "I'm crazy ma, help me!"    * University of Trondheim              *
* She said, "I know how it feels son, * The Norwegian Institute of Tech.     *
* 'cause it runs in the family."      * Division of Physical Electronics     *
*       - The Who, Quadrophenia       * e-mail: dahls@fhydra.dnet.unit.no    *
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+--+-+-+-+-+-+-+-+
Newsgroups: rec.bicycles.misc
From: f0471913@jaguar.csc.wsu.edu
Subject: Re: Cycling at High(ish) Altitudes
Organization: Washington State University
Date: 22 Jan 93 22:30:27 -0800


Most studies I've read have indicated that for trained atheletes, full
adaptation to altitude (2000-4500m) takes 2 weeks. The body does, however,
react within several hours of exposure to altitude with several responses. One
of the most important of these is the increase production of bisphosphglycerate
(BPG), an intermediate in glucose metabolism. BPG causes hemoglobin's affinity
for oxygen to decrease so that O2 may be more easily unloaded at working
muscles thus increasing aerobic performance. The only thing that a person can
do to help the body combat the effects of altitude is to remain fully hydrated.
This increases the plasma volume which can partially compensate for these
effects. From my personal experience with racing at altitude (2000-3000m) the
greatest effect that I have noticed is recovering from anaerobic efforts. I can
stay below my threshold just fine but once I go over my AT I explode and have
to sit up for awhile.

-Dave

David Lawson
Dept. of Biochemistry and Biophysics
Washington State University
Pullman, WA  99163-4660
f0471913@jaguar.csc.wsu.edu

Newsgroups: rec.bicycles.misc,rec.bicycles.soc
From: charlene@boston.sinet.slb.com (Charlene Glatkowski)
Subject: Re: Martha's Vineyard?
Reply-To: charlene@boston.sinet.slb.com (Charlene Glatkowski)
Organization: Schlumberger Technologies CAD/CAM Division
Date: Mon, 25 Jan 1993 13:56:45 GMT

In article <C1DrC1.FrL@panix.com>, tlp@panix.com (Tracy Pendergast) writes:

|> Hi All!
|> 
|> I've always wanted to take a long weekend
|> on Martha's Vineyard... and I've heard that
|> there's bicycle riding to be had there also?
|> 
|> Can anyone set me straight here?  Also, any
|> good places to stay etc... (and with the
|> possibility of pets ?????)
|> 
|> Thanks for any info ... and I do realize that
|> its still only January but the day was so warm
|> and sunny that I got to thinking... Hmmmmm...
|> 
|> Thanks!  --tl
|> 

I've been "planning" on a car->ferry->bike trip to M.V. for a couple of years -
maybe 1993 will be the year :)! The Vinyard is set up so that you can loop
around the whole island on main roads (probably best off-season). I think
the total circuit would be about 52+ miles; with the possibility of cutting 
through the middle of the island for a shorter version, giving more time to
explore on foot as well. A _Best Read Guide_ is published each month for 
Martha's Vinyard (as well as other guides, including Cape Cod). These guides
are available free at various localities in Cap Code/ M.V. or they can mail you 
single copies for $2 (year subscription for $12). These guides include coupons
to local restaurants & hotels, a calendar of events for the month, maps, bike 
route info... and more.

Best Read Guides, Inc.
Box 1958, Finlay Rd.
Orleans Ma. 02653

(508)240-1212
(508)240-2912 FAX

Hope that helps!

-CG, Lincoln, Ma.
Newsgroups: rec.bicycles.misc
From: bll@seer.gentoo.com (Brad Lanam)
Subject: Re: Hit and run accident
Date: Fri, 22 Jan 1993 15:57:43 GMT
Organization: Brad Lanam  Walnut Creek, CA

In article <1993Jan20.023239.9895@netcom.com>
     tomk@netcom.com (Thomas H. Kunich) writes:
>There seems to be some differences in what is printed in various papers.
>
>One paper claimed that the woman was 20 years old. Another 39 (which
>I believe is correct).

    I misquoted the CC times a little there.  The initial report in
Saturday's paper said they were looking for a woman in her 20's [my
mistake was saying 20 years old].  They were also looking for the
registered owner of the car -- a woman age 39.  The difference here is
the apparent age reported by eyewitnesses (?) and between the actuality.
The assumption that the driver and the registered owner are one and the
same isn't always the case.

-- Brad


-- 
Until the next disk seek...
   -- Brad Lanam  bll@gentoo.com  ...!netcom!seer!bll
Newsgroups: rec.bicycles.misc