HDTenEightyP/NetNews huggingface dataset:
From: zowie@daedalus.stanford.edu (Craig "Powderkeg" DeForest)
Subject: Re: Neat AGV helmet on TV (I wish... list)
Organization: Stanford Center for Space Science and Astrophysics
Date: 16 Dec 92 19:54:22


in article <foo> dave.williams@chaos.lrk.ar.us (Dave Williams) writes:
   [someone else writes:]
   -> The only time I will be excited about a helmet is if it has "active
   -> noise reduction", reducing wind noise by say 40 db. A helmet that
   -> doesn't need ear plugs!
    It wouldn't sound loud, but your overall sound pressure would still be
   there, so you'd go just as deaf over long exposure.

bzzt.  Thank you for playing, but that's not the answer we're looking
for.

Active noise filters (if they work!)  *really* *do* cut out the sound.
They're not just fooling your ears by using some nefarious sub-ether,
or something.  The idea is that sound waves are mostly additive, so
that, by pushing when the incoming sound is pulling, and vice versa,
you can make the two effects add to nothing.  *really* nothing.
Silence.  Nada.  Zip.

Unfortunately, it only works (even in theory) if (1) you have a large
array of speakers (audiophile's dream!), to control the spatial phase
(and thus the shape and direction) of the anti-noise wavefronts; or
(2) you only want to cancel the noise in an area that's small compared
to the wavelength of the sound you want to stop (ie small compared to
a piccolo, which makes particularly piercing high-pitched sounds by
being the same size as them), so that the phase is constant in the
region of interest.  Otherwise, if you cancel at one point, the phases
don't work out right everywhere and you end up doubling the amplitude
(and quadrupling the intensity!) somewhere else.

Your ear is much smaller than a piccolo, fortunately!

I would guess that the algorithm looks for, and preserves, sounds with
a relatively narrow spectrum (a few `pure' notes), and looks for, and
cancels, sounds with a wide bandpass, such as white noise.

If the headphones in question are like ones I've (not :) heard, then
they won't work well on a motorcycle: typically, they've been used (in
the past) for rhythmic, repetitive industrial sounds that are
predictable many cycles in advance, whereas white noise such as the
wind in your helmet is not.  Of course, fast-response active 'phones
are in theory possible, and maybe these are it!
--
DON'T DRINK SOAP! DILUTE DILUTE! OK!
From: delorme@garnet.berkeley.edu (Lisa DeLorme)
Newsgroups: rec.motorcycles
Subject: Re: Attention electric vest owners!
Date: 18 Dec 1992 10:28:20 GMT
Organization: University of California, Berkeley
NNTP-Posting-Host: garnet.berkeley.edu

In article <BzFMyn.G6C@news.iastate.edu> tomes@iastate.edu () writes:
>In article <1992Dec17.214231.13428@colorado.edu> laszlo@eclipse.cs.colorado.edu (Laszlo Nemeth) writes:
>>In article <1992Dec17.200227.4185@rd.hydro.on.ca>, jlevine@rd.hydro.on.ca (Jody Levine) writes:

>>|> Everything is for sale. It just depends on the offer.
>>so how much for the bra? my first offer is $1
>
>Next bid is $2
>Couldn't resist.
>CP "Chuck the Merciless" Tomes
>

You guys obviously have not a clue of what a good bra goes for these days......



-- 
Lisa DeLorme                            
delorme@garnet.berkeley.edu           
DOD #363/ 80 KZ250, (mouse bike), 82 KZ440
                    Hey, I'm finally an acronym: DBNI  (Double bike, no income)
From: karish@pangea.Stanford.EDU (Chuck Karish)
Newsgroups: rec.motorcycles
Subject: Re: ME33A Laser wearing too fast. Why? What is your experience?
Date: 19 Dec 1992 18:22:51 GMT
Organization: Mindcraft, Inc.
NNTP-Posting-Host: pangea.stanford.edu

In article <BzHDD0.JrM@news.dtc.hp.com> jjb@dtc.hp.com (Jim Brewer) writes:
>In article <1gre32INNn9d@morrow.stanford.edu> karish@pangea.Stanford.EDU (Chuck Karish) writes:
>>robert@Xenon.Stanford.EDU (Robert Kennedy) writes:
>>>run it at 32 PSI, and it's been as low as 28 for a few hundred miles,
>>>I guess. Would that make this much difference?
>>
>>Riding style makes more of a difference.  
>
>  Than air pressure?  I think not.  Especially on a ME33.  28 is probably
>7psi too low.

The right pressures for my EX500, judged by the 10%-pressure-rise
rule when the ambient temperature was about 55 degrees Farenheit,
were 30 psi front and 34 psi rear.

Is there some other rule of thum that's more appropriate for
choosing pressures for longevity?

--

    Chuck Karish          karish@mindcraft.com
    (415) 323-9000 x117   karish@pangea.stanford.edu
Newsgroups: rec.motorcycles
From: ed@Tekelec.gecko.uucp (Ed Campbell)
Subject: (was) A good motorcycle repair book (Q)
Originator: ed@rover
Organization: Tekelec Inc
Distribution: na
Date: Wed, 16 Dec 1992 21:42:20 GMT


>Can anyone suggest a book or two that deals with all aspects of motorcycle
>repair for the beginner. I've checked the local bookstore but they only had
>one book and it didn't seem very good. 

    Go to a local vocational school that has a motorcycle repair
course and see what they use for a textbook. I don't remember the
title or publisher, but my OL took one of these classes and I found
the book to be quite good. You might like to think about signing up
while you're there, even if you pretty much know what you are doing,
you get access to help and tools you won't normally have at home.


>Wouldn't it be fun to go across North America on a steel horse?
>and to sleep under the stars each night--
>to ride into the Sun each morning,

   Yeah, I done that a few times. It's better when you go the other
way and the sun warms your back instead of shining in your eyes.


Ed Campbell

'57 FL
'76 XLCH
My other car is a '54 Harley Servicar.

*************************************************************
   "Those twins are nice, but since I put in that Plymouth 4
    engine, there aint a Harley, Indian, or Exelcior that can
    touch my Henderson!"
                        Grandmother 1936
=============================================================
 

Newsgroups: rec.motorcycles
From: spindler@emr1.emr.ca (Chris Spindler)
Subject: Re: water-proofing gloves
Organization: Energy, Mines, and Resources, Ottawa
Date: Wed, 16 Dec 1992 22:13:46 GMT

In article <1992Dec14.112021.11158@aber.ac.uk> azw@aber.ac.uk (Andrew Michael Woodward) writes:

>If its warm, who cares anyway? If it's cold, I've yet to find a 
>solution in 20 years of riding! 

Heated grips.  If it's cold and your gloves are wet, your hands don't
freeze (as easily).  I've just recently ridden over 100km in a downpour
which left puddles in the fingertips of my gloves (it was about +5C, on the
last weekend in November).

-- 
Chris Spindler   Seismologist @ Large  |  Staring into a computer screen is  
'91 550 Zephyr    - - - - - - -  o     |  like staring into an eclipse.  It's
'91 K75RT       - - - - - - -  _/\_>   |  brilliant and you don't realize
 DoD #6371    - - - - - - -   O,> / O  |  the damage until it's too late.
From: djm@morpheus.wustl.edu (David Maconochie)
Newsgroups: rec.motorcycles
Subject: Re: HELMETS
Date: 12 Dec 92 02:22:36 GMT
Organization: Washington University in Saint Louis, MO USA
NNTP-Posting-Host: morpheus.wustl.edu

achenbac@epcot.spdc.ti.com (Jeff Achenbach) writes:

>   I am 38 years old, 5'7", 195 lb, and my blood pressure, though not high,
>is not far from being so. I eat too much, drink lots of beer, and don't 
>exercise enough. In short, I will, in the future, be a poor health risk
>and a possible public burden. Should we, therefore, legislate nutrition
>
stuff deleted

>health. Are you willing to sacrifice your personal freedom to choose what
>you eat and drink for the greater public good?

Well if you were paying your own health insurance, you would be charged
vastly more than me on account of your weight, blood pressure etc. As it is,
the rest of your firm pays extra for you.  The question here is should they?
-- 
--

David Maconochie
Newsgroups: rec.motorcycles
From: jlevine@rd.hydro.on.ca (Jody Levine)
Subject: How many nits can a netter pick
Organization: Ontario Hydro - Research Division
Date: Wed, 16 Dec 92 20:28:41 GMT

In article <1gnjkbINNlcs@seven-up.East.Sun.COM> egreen@East.Sun.COM writes:
>
>This metric stuff is confusing enough, do you have to mix it up with

Poor Ed, he can't handle base ten.

>normal measurements?  What's a click, km/hr?  Why didn't you say that
>the first time?

A few notes to the well meaning but ignorant masses who are trying to come 
up to speed with the world that uses the metric system:

Motor vehicle speed is measured in km/h

    not kph, kmph, kmphr, km/hr, etc.

Fuel economy (in Canada & I believe, much of Europe) is rated in l/100 km

    not km/l, kmpl, kpl, l/km, lpkm, km/100 l (well, maybe for Volvos)...

Some Canadians stick steadfastly by mpg, but I gave it up long ago. My RZ 
goes about 300 km on 15 litres, making for ~ 5 l/100 km. Much easier than
converting back. Besides, the Amercans have that itty bitty gallon that
makes everything they have look like a gas guzzler (maybe with good reason,
but who knows for sure without one's HP28 at hand?). Talk about confusing.

A click is used as a pronoun, and refers to whatever unit makes sense,
usually km or km/h. "It's a couple of clicks down the road," or  "I was 
doing 80 clicks over the limit," etc. 

Now you know, so y'all have no excuse for such boorish booboos as kph.

I've        bike                      like       | Jody Levine  DoD #275 kV
     got a       you can        if you      -PF  | Jody.P.Levine@hydro.on.ca
                         ride it                 | Toronto, Ontario, Canada
Newsgroups: rec.motorcycles
From: jlevine@rd.hydro.on.ca (Jody Levine)
Subject: Re: Neat AGV helmet on TV (I wish... list)
Organization: Ontario Hydro - Research Division
Date: Thu, 17 Dec 92 14:56:36 GMT

In article <31005.89.uupcb@chaos.lrk.ar.us> dave.williams@chaos.lrk.ar.us (Dave Williams)  writes:
>
>-> The only time I will be excited about a helmet is if it has "active
>-> noise reduction", reducing wind noise by say 40 db. A helmet that
>-> doesn't need ear plugs!
>
> It wouldn't sound loud, but your overall sound pressure would still be
>there, so you'd go just as deaf over long exposure.

Why? If the system produces a cancelling wave so that you can't hear it, your
ears won't feel it, either. The canceller's speakers still make pressure waves
just like any other sound source, only they do so to even out the pressure
rather than disturb it. Why would this be damaging?

> Arthur C. Clarke described active noise cancellation quite thoroughly
>in a short story back in the 1950s.  Someone managed to patent it
>anyway, but it's widely known the US Patent Office will issue patents
>for nearly anything.  Clarke's prior description makes the patent very
>shaky.

Just because they have teleports in Star Trek doesn't mean that they wouldn't
be patentable were someone to develop one. The *technology* would
be new. I doubt that A.C. Clarke had a clue about digital filtering
in the 50s.

I've        bike                      like       | Jody Levine  DoD #275 kV
     got a       you can        if you      -PF  | Jody.P.Levine@hydro.on.ca
                         ride it                 | Toronto, Ontario, Canada
Newsgroups: rec.motorcycles
From: templin@rintintin.Colorado.EDU (TEMPLIN GERI ELLEN)
Subject: MSF question
Keywords: MSF
Organization: University of Colorado, Boulder
Distribution: usa
Date: Tue, 15 Dec 1992 15:00:56 GMT


   I'd like to know how to find an MSF course in my area. I'm
in Colorado, Denver/Boulder area. What does it cost? Is the 
consensus that it's worth it? I've ridden a bit but had a small
spill right off the bat and had my confidence shook. I don't 
have a feel for how to ride aggressively and I hate weenie-ing
around.

thanks    templin@rtt.cs.colorado.edu



Newsgroups: rec.motorcycles
From: nak@cbnews.cb.att.com (neil.a.kirby)
Subject: Wet Brakes (was)Re: Fun
Organization: AT&T
Date: Fri, 18 Dec 1992 14:19:32 GMT

(Real stuff at the bottom, just like Dannon yogurt :-)

In article <1992Dec17.221920.5835@news.columbia.edu> scs8@cunixb.cc.columbia.edu (Sebastian C Sears) writes:
>
>	Rode in about 50 degree weather, heavy fog, medium-heavy rain for about
>	fifty miles today to do errands. Most of it was on boring two lane 
>	(each way) parkway. Found that, despite all this, I was in the best
>	mood I'd been in all week.
>
>	Let's hear it for not storing bikes for the winter!!

And for Aerostuch suits.  I rode to work earlier this week in damp forty to
fifty degree F weather with similar mood imporvement.
>
>	ObRain> Anyone ever do any practicing with *wet* brakes? I would like
>	to, but it's usually raining at the good times to practice :-) 
>	Seriously, though... I could still stop fine, I think I could have
>	locked the front up still, but it took much more pressure lever,
>	and had to go much deeper into the throw of the lever... wouldd be 
>	worth practicing, methinks...

Before doing this, I humble advise going out and looking at your front
brake.  If it is a disk with no holes in it, be really careful.  Most
modern bikes have drilled disks, but older ones don't.  In 1978, in a
pouring rain, I rode my no-holes-in-the-rotor RD350 home from work.  The
light on the highway changed.  I got on the brakes.  THe rear drum was
fine, but the front disk was out to lunch.  I kept a light pressure with
occasional "spikes" (very short duration) of high pressure to try and get
the pads to quit hydroplaning on the water on the disk.  A few jabs into
it and I had a working front brake without a locked front tire.  

I went to the next light and waited to turn left.  The light changed and
I watched a guy on a Honda CB750 in the oncoming lane hit his front brake
and panic when nothing was there.  He got right up to the intersection
without shedding much speed and then the front locked and he went down and
slid through the intersection.  He wasn't hurt (but his rainsuit was
totalled) and his bike was still operative.

Neil Kirby
Newsgroups: rec.motorcycles
From: delilah@next15pg2.wam.umd.edu (Romeo DeVerona)
Subject: Re: 65+ mph turns
Organization: Workstations at Maryland, University of Maryland, College Park
Date: Sun, 13 Dec 1992 20:40:54 GMT

look, the reason for hanging off while turning is simple... it's not that
it lets you make tighter turns, it lets you make the turns at higher
speeds. when you turn, you change the radius of the bike's tracking curve,
as a function of the lean angle; more lean angle == tighter radius turn.
however, you have to have a _balance_ of forces... the inward force (that  
is, the force of the road on your tires, in the direction of the center of  
the turn, which is the force that turns you) is equal to your mass times 
your velocity (speed) SQUARED, divided by the radius of the turn. fine and  
dandy so far. at higher speeds, the "turning" force is much greater (as  
we've all noticed, we can turn at parking lot speeds simply by turning the  
forks with no lean; not so at highway speeds!). however, this force acts  
on the bottom of the tires; in a right hand turn, it pushes to the right, 
which attempts to give the entire bike a rolling motion to the left. the 
reason you lean is to counteract this moment (torque) induced, with a  
counter-torque; by shifting your center of mass to the inside (the right  
in this example), the downward force of gravity tries to induce a rolling 
motion to the right; the bike doesn't flip over to the outside. higher  
speed, same turn, same lean angle... same radius, higher inward force  
(proportional to velocity squared, remember), you must shift weight more  
to the center (of the turn) to keep the forces balanced.

damn, doesn't anyone but me remember basic physics?

-D-
From: mparsons@fleming.csc.bcm.tmc.edu (Mark Parsons)
Newsgroups: rec.motorcycles
Subject: Re: Engine ignites gas (was Re: correction on New Biker)
Date: 14 Dec 1992 16:26:38 GMT
Organization: Baylor College of Medicine, Houston, Tx
Distribution: world
Reply-To: mparsons@fleming.csc.bcm.tmc.edu (Mark Parsons)
NNTP-Posting-Host: fleming.csc.bcm.tmc.edu
Originator: mparsons@fleming.csc.bcm.tmc.edu


In article <9901098@hpfcso.FC.HP.COM>, ron@hpfcso.FC.HP.COM (Ron Miller) writes:
|> Re: bike fires
|> 
|> The hot engine alone wouldn't be enough to light the gasoline that is 
|> spilled.
|>
|> Applying electric power to a switch or starting the bike might do it.

AAAAAAAAAAAACCCCCCCCCCKKKKKKKKKKKKKKK!!!!!!!!!!

Wrong answer.  My bike ignited the fire from heat alone . . . bike
was off and no sparks around . . . granted, the engine block was
more than just room temperature!! ;-)

Mark
From: djm@morpheus.wustl.edu (David Maconochie)
Newsgroups: rec.motorcycles
Subject: Re: HELMETS
Date: 12 Dec 92 02:12:07 GMT
Organization: Washington University in Saint Louis, MO USA
NNTP-Posting-Host: morpheus.wustl.edu

paulb@harley.tti.com (Paul Blumstein) writes:


>I used to do a lot of program tuning.  (I hope most can relate to what
>I am saying).  Anywho, assume that you have a loop that executes 5 times and
>takes 1 sec per execution.  You have another loop that only takes
>1/10 sec to execute but during the course of running the program,
>this loop gets exercised 200 times.  Any right thinking computer jock
>would say that loop A costs 5 secs and loop B costs 20 secs, therefore
>I will spend more effort trying to optimize loop B.

>Our legislators think the opposite.  They figure more injuries per
>bike mile than per car mile.  Despite the fact that there are more
>car head injuries than bike head injuries, they are optimizing
>the wrong loop!  Helmets for cagers, not bikers!

Well hang on here sport!  I think that loop B has been considerably inproved
by mandatory seatbelt wearing, and by the legislation that every new vehicle
(except motorcycles and probably tractors and grass cutters etc) has to be
fitted with a passive restraint (eg and air-bag), so I think that by your
reasoning it is perfectly legit to spend some effort on loop A now.
-- 
--

David Maconochie
Newsgroups: rec.motorcycles
Subject: Re: correction on New Biker
From: Stafford@Vax2.Winona.MSUS.EDU (John Stafford)
Date: 15 Dec 92 14:21:51 -0600
Followup-To: rec.motorcycles
Distribution: world
Organization: MSUS

Diana Boyd (dboyd@informix.com) wrote:
> [...] every once in awhile you'll pass a car smoldering away, surrounded
> by fire engines, on the side of the hiway. How does that happen?

Former Hard-core Yammabago riders who became disenchanted with small
vehicles have formed rogue 'firemen' gangs who pursue cagers-without-
a-clue and set fire to them.
Newsgroups: rec.motorcycles
From: jlevine@rd.hydro.on.ca (Jody Levine)
Subject: Re: Neat AGV helmet on TV
Organization: Ontario Hydro - Research Division
Date: Thu, 17 Dec 92 15:17:27 GMT

In article <1992Dec17.040048.750@pages.com> bigdog!jon (Jon Wright) writes:
>
>> Yes. PeltierEffect.  Same principle as a thermocouple, but runs in reverse.
>
>OK, for us dunces, can somebody explain the Peltier effect.

    _   _   _   _>-
   p n p n p n p      ^^^^heat^^^^
+>-   -   -   -  

You have alternating lumps of semiconductor, one with positive charge carriers,
the next with negative charge carriers, and so on. They are arranged in a
sanke, as above, where current starts at the bottom left, flows through the p,
through, the - then down through the next n, until it gets to the minus at
the top right.

The lumps with positive charge carriers will have the carriers moving away
from the positive terminal, and, given the geometry of the device, always
in the up direction. The negative carriers in the other lumps will always
move *toward* the positive terminal, and also up. All of the carriers are now
moving from the bottom plate to the top plate taking the heat with them.

This also works in reverse. If you put different temperatures on the two
plates, you get a current out (thermocouple).

I've        bike                      like       | Jody Levine  DoD #275 kV
     got a       you can        if you      -PF  | Jody.P.Levine@hydro.on.ca
                         ride it                 | Toronto, Ontario, Canada
Newsgroups: rec.motorcycles
Subject: Looking for opinions about '84 V-30 Magna
From: dave.williams@chaos.lrk.ar.us (Dave Williams) 
Date: 17 Dec 92 13:13:00 GMT
Reply-To: dave.williams@chaos.lrk.ar.us (Dave Williams) 
Distribution: world
Organization: The Courts of Chaos * 501-985-0059 * Public Access Usenet


-> I have an opportunity to buy a 1984 V30 Magna w/10,000k miles.
-> It looks well maintained.  The "asking" price is $1,600.

 Does that come with KY jelly, or do you supply your own lubricant?

 A more appropriate price, assuming the machine is in excellent
condition, would be $600.
                                              
Newsgroups: rec.motorcycles
From: zowie@daedalus.stanford.edu (Craig "Powderkeg" DeForest)
Subject: Re: Nude Motorcycle Riding explained!
Organization: Stanford Center for Space Science and Astrophysics
Distribution: usa
Date: 12 Dec 92 20:58:54

In article <foo> viking@iastate.edu (Dan Sorenson) writes:
	   I had a few pics sent to me several months ago.  One of
   these happened to be a nude woman on a motorcycle, looking like she
   was just motoring along with a care in the world.  She was wearing
   a helmet, but nothing else that I could see.

	   So while I'm viewing this great piece of Americana on my
   workstation over lunch, in comes the boss...

	   "Yeah, they had a nude protest ride in California a few weeks
   ago to protest the new helmet law.  I was in the newspapers -- you
   didn't hear about it?"

	   He bought it.

Haay, WAITAMINNIT.  *I* organized a nude protest ride through Stanford
University a few months ago, to protest the new helmet law!  Our lead
rider was a beautiful woman.  We wore nothing but helmets, and went
roaring around and through campus.

Your gal in the pic didn't happen to have long, red hair and to be
riding a black Honda Shadow 500, wearing a red RF-200, did she?

--
DON'T DRINK SOAP! DILUTE DILUTE! OK!
Newsgroups: rec.motorcycles
From: svoboda@rtsg.mot.com (David Svoboda)
Subject: Re: Problems with the 'Ol Sport
Organization: Motorola Inc., Cellular Infrastructure Group
Date: Tue, 15 Dec 1992 06:19:08 GMT

In article <txd.724185800@Able.MKT.3Com.Com> txd@ESD.3Com.COM (Tom Dietrich) writes:
|
|>Are the cylinder liners new?  (Are there cylinder liners?  Could they have 
|>warped, and unsealed the head?
|
|Dave, they're talking about the new EVO bikes, not the 1972 Iron
|Sportster. 

Ok.  Sorry.  What is an Evo made from, if not iron?

|At least it, as a second bike isn't a two stroke... :{>

Oooh, that hurts.  :-)

(At the moment, it's a no-stroke.)

Dave Svoboda (svoboda@void.rtsg.mot.com)    | "I just can't take
90 Concours 1000 (Mmmmmmmmmm!)              |  this weird shit
84 RZ 350 (Ring Ding) (Woops!)              |  before breakfast!"
^^^^^^^^^ -- It don't live, not even close!
AMA 583905  DoD #0330  COG 939  (Chicago)   |   -- Evo Woman
From: tcora@pica.army.mil
Newsgroups: rec.motorcycles
Subject: Re:  What's a click?
Date: 17 Dec 92 17:26:01 GMT
Organization: Elect Armts Div, US Army RDE Center

In article <1992Dec16.175423.2412@i88.isc.com> jeq@i88.isc.com
(Jonathan E. Quist) writes:
>In article <1992Dec16.082737.1381@galaxy.gov.bc.ca>
>bclarke@galaxy.gov.bc.ca writes:
>>In article <1gnjkbINNlcs@seven-up.East.Sun.COM>, egreen@East.Sun.COM
>>(Ed Green - Pixel Cruncher) writes:
>>> In article 32557@acs.ucalgary.ca, parr@acs.ucalgary.ca
>>>(Charles Parr) writes:
>>>>
>>>>BTW, Cops estimated he hit me with a closure of 25km per hour,
>>>>I'd guess he must have been doing 80-100clicks, since I was 100ft
>>> 
>>> This metric stuff is confusing enough, do you have to mix it up with
>>> normal measurements?  What's a click, km/hr?  Why didn't you say that
>>  ^^^^^
>>> the first time?
>>
>>Normal to you. Most countries use metric. 'Clicks' is an expression I use and
>>hear all the time, although usually I've seen it spelled as 'Klicks'.
>
>Strictly speaking, though, "klick" refers to distance, not speed.
>So the above is semantically equivalent to saying "Fenstemaker was going
>105 miles when he passed the radar speed trap" instead of "...was going 105
>miles per hour...".

We (ie, the electric gun community) are a bit weird. To us, a klick is 1km/sec.
Newsgroups: rec.motorcycles