HDTenEightyP/NetNews huggingface dataset:
From: kiisaka@csi.uottawa.ca (Ken Iisaka (the mad pianist))
Subject: Re: Folding tires & straight sided rims
Organization: Dept. of Computer Science, University of Ottawa
Date: Mon, 14 Sep 92 16:35:08 GMT

In article <1992Sep14.040228.2165@unixg.ubc.ca> koichi@unixg.ubc.ca (Koichi J Kishimoto) writes:
>I'm thinking of getting a set of folding tires (Kevlar bead) for
>my MTB (Araya CV7 rims) . I understand, however, that folding 
>tires shouldn't be used on straight sided rims (as opposed to 
>hook beaded rims). Is this true?
>
>John Kishimoto
>koichi@unixg.ubc.ca
>koichi@mech.ubc.ca

Hai
-- 
Ken Iisaka  kiisaka@csi.uottawa.ca : Next recital: January 7th, 1993, 12pm 
Artificial Intelligence Laboratory :   National Gallery of Canada, Ottawa, Ont.
University of Ottawa, Ont., Canada : Programme: Berg, Sonata op.1, followed by:
H: +1 613 237 6642     W: 564 8155 :      Mussorgsky, Pictures at an exhibition
From: wgns@troi.cc.rochester.edu (C. Wiggins)
Newsgroups: rec.bicycles.tech
Subject: Alsop Softride Stem vs. Suspension forks
Date: 16 Sep 92 01:13:18 GMT
Organization: University of Rochester - Rochester, New York

I'm about to buy a suspension goodie for my S-works M2, and I was
about to get a specialized future shock until I rode a friend's
bike who had one of those parallelogram Alsop softride stems
installed.  I used to think that suspension stems were pretty
much just a gimmick, or at best they were only good for making
the shock to the arms a bit less severe.  But I was IMPRESSED.
This thing rode very much like a bike with a Manitou or some
fork with minimal sticktion.  I thought that as I hit a bump 
my hands would dive down awkwardly, but instead, the whole
front end tended to come up a bit while my hands stayed pretty
much where they were.  But best of all, the bike handled perfectly
with no fork flex (of course...it was a rigid fork), no altered
geometry, and there wasn't compression during uphill hammering.

But now I'm confused.  Everyone says that I should suspend the
bike from the wheels, not the rider from the bike, but this
thing is seeming now to be a pretty good alternative to forks
(not to mention the weight/cost savings).  

Has anyone out there ridden this stem long enough to have some
pretty detailed ideas about how well they work -- pros, cons, etc?
I CRAVE INFO.  I'm particularly interested in hearing from 
someone who rides a 150mm version of this stem (the size I need).

Thanks in advance,

Chris Wiggins
Newsgroups: rec.bicycles.tech
From: jackson@ponder.csci.unt.edu (Bruce Jackson)
Subject: Re: bent frame question
Organization: University of North Texas, Denton
Date: Mon, 14 Sep 1992 23:13:19 GMT

In article <14SEP92.15564431@alcvax.pfc.mit.edu> stek@alcvax.pfc.mit.edu writes:

>I just discovered that my frame is bent.  I got the frame this spring
>and last crashed on it in April.  I am sure that the damage did not
>occur then.  Anyhow, both the top and down tubes are bent as if I had a
>head on with a wall.  There is no damage to the fork or fron
>t wheel as  far as I can tell.  I just noticed that there
>was an overlap problem between my front wheel and my shoe, so I am
>confident that the bending happened recently.

Are you sure that your frame was bent?  Are there cracks in the paint
around the head tube lugs, or bulges in the tube?

Toe wheel overlap is not uncommon in racing bikes.  Since my bike
has a 75.5 degree head tube angle I have a lot of overlap.  The speeds
that you turn the wheel far enough to hit a foot you are riding slow
enough to time it or coast.  I know people who rode for many months
before noticing that their toe hit their front tire when they turned
sharply at low speeds.

>I hit a few potholes
>in races last weekend, but that is all I can think of.  Anyhow
>has anyone had their fram bend like this without a major accident?
>What about warenty coverage?  I wonder if the tubes were
>overheated when the bike was built.  I guess I am going back to
>riding a Cannondale.  Bother!

If your frame is bent than it is unlikely that the potholes did it.
If your frame is bent than don't say a word about racing to your
dealer.  Racing automatically voids your waranty (kind of funny,
using a bike for what it's designed for voids the waranty).  The
dealer may not believe that you didn't crash the bike.  When I sold
bikes I'd have people come in with bent frames claiming that they
never crashed but the saddle was scuffed up, the handlebar tape
was scratched off, and the stem was knocked etc.  I guess that
they thought that we were idiots or something.  I'm not saying that
you are lying but dealers are sort of condidtioned to expect the
worst due to the 100 riders before you trying to get a new bike
after trashing the one they bought.

Anyway, good luck! I hope that you can get this equitably resolved.

Bruce  -  jackson@cs.unt.edu
Newsgroups: rec.bicycles.tech
Subject: Re: Knackered bottom bracket thread
From: <JONQC@CUNYVM.BITNET>
Date: Friday, 4 Sep 1992 20:54:36 EDT
Organization: City University of New York/ University Computer Center

From: pauls@icecreambar.css.itd.umich.edu (Paul Southworth)

| Patrick Haggard writes
||
|| I have stripped the thread on the bottom bracket that the fixed cup
|| screws into.  As a result the fixed cup is hanging loose, and the
|| axle is wobbly.  Can anyone suggest how I might get the thread
|| rethreaded?

| Paul Southworth responds
| If the threads are just a little screwed up and you can't get the cup
| threaded in, a bottom bracket thread chaser is what you need.  Var and
| Campy are the better ones, but any piloted-style chaser will be accurate
| and will avoid cross-threading problems.
|
| If the threads are so mashed that after they are chased the cup does not
| stay tight, you can do:
|
| 1. add loctite or some other thread locking compound to see if that will
| keep it in, or
|
| 2. ream the shell and rethread it as Italian <-- the extreme solution, but
| not unusual for a really thrashed shell, or a shell that has been
| ovalized.

3. As a last resort, buy a Mavic sealed bottom bracket.  They are
expensive but they are installed with uniquely designed tapered lock
rings that don't use or require any bottom bracket threading.

John Leong
JON@QCVAXA.BITNET
JONQC@CUNYVM.BITNET
Newsgroups: rec.bicycles.tech
From: dahls@fhydra.dnet.unit.no (Joern Yngve Dahl-Stamnes)
Subject: Re: Nightsun
Reply-To: dahls@fhydra.dnet.unit.no (Joern Yngve Dahl-Stamnes)
Organization: University of Trondheim, NORWAY
Date: Mon, 07 Sep 92 10:23:51 EDT

thus spoke the keyboard of pardo@cs.washington.edu (David Keppel):
>dahls@fhydra.dnet.unit.no (Joern Yngve Dahl-Stamnes) writes:
>>[Battery capacities for lights.]
>
>Beware that battery capcities are reduced by low temperatures.  At
>freezing, a lead-acid gel cell can have half (or maybe even less) than
>the warm capacity.  Capcity vs. temperature curves are available for
>all batteries, check them out and consider your average temperatures
>when you plan out your battery capacity!

That is why I will insulate (sp?) the battery box! This will help
keeping the cold out for some time. My winter rides are seldom longer
than 1 1/2 hour.

I will try how good this box work by letting it stay in my living room
for some days (so that everything inside the box got the same
temperature as the temp in my living room). Then I put it in my freezer
(-20 deg. centigrade) and see how the temperature is dropping inside the
box (I'll connect a XY plotter to a termistor inside the box, where the
X-axis is the time and the Y-axis is the temperature).

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+--+-+-+-+-+-+-+
* 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.tech
From: pardo@cs.washington.edu (David Keppel)
Subject: Re: drum brakes
Organization: Computer Science & Engineering, U. of Washington, Seattle
Date: Sat, 12 Sep 92 18:18:28 GMT

Dino_P._Chiesa@transarc.com writes:
>[Hydraulics = heavy.]

The hydraulic rim brakes I've seen claims for -- Magura and Mathauser
-- both, as I recall, claimed less weight than standard rim brakes.
The ``cabling'' is lighter, the master and wheel cylinders aren't that
heavy, and the support is simpler (a `U' instead of several lever arms
if you're replacing a side-pull, two bolt holes if you're replacing a
canti).

>[Hydraulics = complicated.]

They do require seals, etc., but they have less friction and less
elasticity, both of which contribute to a positive brake.  The pads
move in a stright line with the Maguras, eliminating cantilever pad
suck.  Hydraulics are easy to make self-adjusting so you only have to
touch them when it's time to replace the pads (I don't know if any
bicycle brakes do this, but basically all motorcycle and car hydraulic
brakes do).

		;-D on  ( A brake at stake )  Pardo
From: pauls@icecreambar.css.itd.umich.edu (Paul Southworth)
Newsgroups: rec.bicycles.tech
Subject: Re: bent frame question
Date: 14 Sep 92 20:26:53 GMT
Reply-To: pauls@umich.edu
Organization: University of Michigan

stek@alcvax.pfc.mit.edu writes
| I just discovered that my frame is bent.  I got the frame this spring
| and last crashed on it in April.  I am sure that the damage did not
| occur then.  Anyhow, both the top and down tubes are bent as if I had a
| head on with a wall.  There is no damage to the fork or fron
| t wheel as  far as I can tell.  

Actually in such instances, for reasons I cannot explain, it is often the  
REAR wheel that gets hammered, while the front stays OK.

| I just noticed that there
| was an overlap problem between my front wheel and my shoe, so I am
| confident that the bending happened recently.  I hit a few potholes
| in races last weekend, but that is all I can think of.  Anyhow
| has anyone had their fram bend like this without a major accident?

I've seen it many times, and often people swear that they've done nothing  
to the bike.  I'm inclined to believe that if you hit it just right, you  
can often do it will relatively little force.  I think in many cases,  
though, it happens that someone else did the damage to the bike, or you  
did the damage to the bike while you were not riding it  (ie, backed into  
it with car while in garage, lightly struck overhanging obstacle while on  
roof rack, or whatever).  Obviously one cannot speculate with any  
credibility on such possibilities.

| What about warenty coverage?  

Good luck.  I'd have to say your chances are quite slim.

| I wonder if the tubes were
| overheated when the bike was built.  I guess I am going back to
| riding a Cannondale.  Bother!

Overheating wouldn't cause that.  The primary symptoms of overheating at  
joints are small cracks around the lugs and through the lugs.  To bend a  
bike that had been overheated, you would still have to go through the same  
process as if it were not overheated, just that you would probably see  
more cracking around and through the joints.
Newsgroups: rec.bicycles.tech
From: kiisaka@csi.uottawa.ca (Ken Iisaka (the mad pianist))
Subject: Re: hubs
Organization: Dept. of Computer Science, University of Ottawa
Date: Tue, 8 Sep 92 05:40:05 GMT

In article <1992Sep7.220939.22846@leland.Stanford.EDU> sjlt@leland.Stanford.EDU (Sean Lev-Tov) writes:
>Well, after my original post about my RX100 hub experience, I got the above
>friendly email.  Now I'm curious.  Is it really a feature that the hub deform?
>If it is, I'm surprised.  If it is desireable, then why?  I'd really like to
>hear an explanation.  Thanks.

When the aluminium flange around spoke holes deforms, the spoke elbow is better
supported as there is a greater area of contact between the flange and the
spoke.  This would result in less stress on the spoke elbow, which is a very
vulnerable area on a spoke.  
-- 
Ken Iisaka  kiisaka@csi.uottawa.ca : A Smalltalk class is an instance of the 
Artificial Intelligence Laboratory : class, Class, which is an instance of the
University of Ottawa, Ont., Canada : metaclass, Class, which is an instance of
H: +1 613 237 6642     W: 564 8155 : the class, Metaclass, which is an...
Newsgroups: rec.bicycles.tech
From: kiisaka@csi.uottawa.ca (Ken Iisaka (the mad pianist))
Subject: Re: Suntour Sprint brake question
Organization: Dept. of Computer Science, University of Ottawa
Date: Mon, 7 Sep 92 06:05:08 GMT

They are excellent brakes.  They are better constructed than Shimano 600 and
105 brakes, IMHO...

-- 
Ken Iisaka  kiisaka@csi.uottawa.ca : Just got back from Aspen, Colorado.
Artificial Intelligence Laboratory : Please be gentle.  I have to get 
University of Ottawa, Ont., Canada : acclimatised to the low altitude here.
H: +1 613 237 6642     W: 564 8155 : I was a mountain goat there...
Newsgroups: rec.bicycles.tech
From: mcoulter@silver.ucs.indiana.edu (Summer Vacancy)
Subject: Helmets?
Organization: Indiana University
Distribution: usa
Date: Sat, 12 Sep 1992 04:17:06 GMT

Had my first head crunching accident this week.  Do not as yet have 
a helmet, but I used to feel pretty safe on my mountain bike. Hit 
a stretch of treated wood on a bike trail in Ft. Wayne Indiana that
was wet and slicker than snot.  Fell to the side and hit my ear (it
took the entire impact of my fall) on a the rail of a train track.

Had a minor concussion.  

I've looked at all the helmets.  Since I have thick and very long hair
I don't see anything that will offer any protection against what happened
to me.   The rail would have still got me. Those helmets offer not facial
or side protection.They only seem to protect the top of the 
cranium.

I got a spare $50, but lack serious motivation to buy and wear one.

Anyone out there have a few horror stories?  Maybe I got lucky
or maybe these things are just not possible to protect one's self against..
(the accidents).  

All types of stories would be appreciated.  Hearsay, etc... welcome.
Thanks.  

Still struggling with the "survival thing" in indiana.

Organization: Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.bicycles.tech
Date: Fri, 11 Sep 1992 13:09:14 -0400 
From: Dino_P._Chiesa@transarc.com
Subject: Re: drum brakes



detlef@iw.uni-hannover.de (Detlef Adolph) writes:
> At the University of Hannover we want to construct a new hydraulik drum brake, eve\
> ntually with "integral function" of front and back wheel.
> Therefore we would like to get some answers to the following points: 
> 
> 1) We need drawings and material information of good drum brakes
> 2) Who has experiences with the use of drum brakes
> 3) What do you think about hydraulic in connection with drum brakes?
> 

This sounds interesting, but I have a few questions.

What is the advantage of using drum brakes vs. standard calipers?
After reading Bruce Prickett's post re: tandems+drum brakes, I can see
why a heavy tandem might find use for a drum.  But for general use, is
there an advantage? 

Also, why use hydraulics?  Seems to me that hydraulics add
complication and weight, without offering benefits.  What's the story?

-------------

A while back I was reading a generic news magazine
(Time/Newsweek/USNews/etc), and I saw an article predicting the future
of bicycle technology.  There was an expert quoted (I forget his name)
who said that drums and hydraulic brakes were sure to be the wave of
the future.  I can't understand why this would be so. 

My feeling is: 

      drum/hydraulic brakes == 
           more complicated == 
                 heavier + less reliable + more expensive. 

??


-dpc
Newsgroups: rec.bicycles.tech
From: webel@leland.Stanford.EDU (Baird Webel)
Subject: Re: Mispostings
Organization: DSG, Stanford University, CA 94305 USA
Date: Tue, 8 Sep 92 18:07:01 GMT

In article <Bu0rM6.5D6@Novell.COM> kbest@doc.novell.com (Karl Best) writes:
>In article <1992Aug29.223546.23391@CSD-NewsHost.Stanford.EDU>  
>les@SAIL.Stanford.EDU (Les Earnest) writes:
>> In any case, it is also clear that many people do not bother reading
>> the charters of newsgroups they join and instead just read them a bit
>> to determine by example what sorts of things go there.  In view of
>> that, in the formative stage of a newsgroup it is particularly
>> important to point out any general misposting patterns.  Failing that,
>> the distribution of articles might become chaotic, which would defeat
>> the purpose of subdivision.
>
>I'll add my two bits based on the human-computer interface/design/usability  
>stuff I've been reading lately:
>
>If it isn't self evident or intuitive how something works then it's incorrectly  
>designed. 
>
>--
>Karl Best                              Far away, across the field
>Novell Tech Pubs           ...  __o    the tolling of the iron bell
>Provo, Utah  801-429-3428 ..   -\<,    draws the faithful to their knees
>kbest@doc.novell.com      ...(_)/(_).  to hear the softly spoken magic spell
>karl_best@npd.novell.com                  -Roger Waters, Pink Floyd

what if two people have different intuitions about how something
works?

just a question.

Baird
webel@guvax.acc.georgetown.edu
Xref: sparky rec.bicycles.tech:470 rec.bicycles.marketplace:244
From: sutton@lamar.ColoState.EDU (Rich Sutton)
Newsgroups: rec.bicycles.tech,rec.bicycles.marketplace
Subject: Re: New Mavic (Dia-Compe) Brakes?
Date: 14 Sep 92 16:16:59 GMT
Followup-To: rec.bicycles.marketplace
Organization: Colorado State University, Fort Collins, CO  80523

In article <BuHr0J.62D@news.cso.uiuc.edu> tlt38517@uxa.cso.uiuc.edu (Terry Thiel) writes:
>Has anyone seen or used the new Mavic (made by Dia-Compe) road brakes?
>What are your opinions?


Followups directed to rec.bicycles.marketplace



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^^^^^^^^^^^^^^^^^^^^^^^^
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                             ^^^^^^^^^^^^^^^^^^^^^^
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^^^^^^^^^^^^^^^^^
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Newsgroups: rec.bicycles.tech
From: mjohnsto@jenny.shearson.com (Mike Johnston)
Subject: Tire cuts: When is too bad?
Organization: Lehman Brothers
Date: Mon, 7 Sep 1992 04:44:50 GMT


With about 100 miles on a pair of brand new Michelin Super Comp HD's
I got a nasty flat the other day that left a battle scar on my rear
tire. The cut is about 1/3" long and runs across the business side of
the tire perpendicular to the direction of travel. It went all the way
through, cleanly.

I keep my tires at 110psi. Should I worry about a blowout with this tire?
Am I being a worry wart? 

MJ
--
Michael R. Johnston/System Administrator                mjohnsto@shearson.com  
  =-=-=  The official .signature of the 1992 Barcelona Olympics. =-=-=
Newsgroups: rec.bicycles.tech
Subject: Re: Chain Cleaners
From: news@massey.ac.nz (USENET News System)
Date: Mon, 14 Sep 92 01:45:31 GMT
Followup-To: rec.bicycles.tech
Organization: SMIS, Massey University

djconnel@leland.Stanford.EDU (Daniel Connelly) wrote:

stuff about cleaning his chain with Simple Green... 

> This seems to work fine; I have felt no need to buy a chain cleaner.
> For a more complete clean, I periodically give the chain a soak in
> dilute simple green, wipe down with rag, spray with some WD-40, wipe
> with rag, and lubricate with Tri-Flow as above.

I have found WD-40 and/or Tri-Flow doesn't last well, especially in
wet/muddy conditions.  Either Pedros or for really muddy conditions a lube
designed for off-road motorcycle chains (get it from your local motorbike
shop) last better in my experience.  The only trouble with the latter is
that it is messy and is hard to clean off the chain (but by the same token,
it remains in place, doing its job, longer than anything else).  I use
Pedros these days, because it comes in a squeeze bottle rather than an
aerosol, cleaning is done with water, and I'm trying to be more
environmentally friendly O:-)  (similie with a halo).

> Have people observed that hang-on cleaners do a significantly better
> job than a toothbrush?

When I use Pedros, I don't need to take the chain off the bike or use my
Vetta cleaner.  Otherwise however, the hang-on cleaners do a better job
than a toothbrush for me, but that's probably because I'm too
lazy/impatient to do the job thoroughly with a toothbrush.

--
Phil Etheridge               P.Etheridge@massey.ac.nz
Macintosh Consultant         Phone: +64+6-356-9099 x8689
SMIS, Massey University      Fax:   +64+6-350-5611
Palmerston North, NZ         40*23'S 175*37'E,    GMT+12
From: msw10@nepenthe.as (Michael S. Wong)
Newsgroups: rec.bicycles.tech
Subject: Re: hyperglide cassette cogs positions in the cluster
Date: 11 Sep 92 18:23:18 GMT
Reply-To: msw10@nepenthe.as
Organization: Sun Microsystems

In article 100992113527@you-quadra.taligent.com, you@taligent.com (Lawrence You) writes:
>In article <72153@apple.Apple.COM>, mikami@Apple.COM (Eiichiro Mikami)
>wrote:
>> Are the cogs made to be in a certain positions?
>
>In a way, yes.  For a cog with a specific number of teeth, Shimano makes
>several Hyperglide cogs.  The different cogs are marked with several
>letters, e.g. H K 15T.  So it's not so much which position (left to right)
>as which angle/phase of the Hyperglide ramps.  I think the letters indicate
>compatibility between adjacent cogs and I've seen a compatibility chart in
>print (maybe at a bike shop).
>
>To keep a cassette functioning as it is intended, the cogs should be
>replaced so that they are still compatible.  A local shop, Shaw's, carries
>lots of parts but won't stock individual Hyperglide cogs because there are
>too many of them.  Good luck finding individual cogs.
>
>-Lawrence
>
>you@taligent.com

I don't know if this was mentioned in the original post, but the cogs *aren't*
available indiviually. The only way to mix them is to buy several cassettes and
mix and match the cogs you want or find someone else who has several cassettes who
is willing to break a set. I've seen several posts regarding the positioning
of the release gates being the reason for the cog positioning. This is partially
correct. It is the position of the release teeth relative to the pickup teeth.
Both are needed fo shifts under power. I was going to mix cogs from several of
my cassettes until I heard of the matched sets and then took a close look at
how the Hyperglide shifts occur. My conclusion is that the loss in shifting 
performance outweighs any benefits of a custom range. I've heard accounts
of mixed Hyperglide clusters not shifting at all and the chain riding up
on the top of the teeth. This may be the one time in which Shimano's 
incompatibility warnings are true.

Michael  Wong 
msw10@amdahl.com
From: I.Rutson@bradford.ac.uk (Ian Rutson)
Newsgroups: rec.bicycles.tech
Subject: Re: Cateye Vectra -- setting clock
Date: 14 Sep 92 20:41:18 GMT
Organization: University of Bradford, UK
Originator: 91722908@muser

-- 
Ian Rutson                      |     ___     Meet Ozzie the Owl,
2nd Year Electronic Engineering |    <*,->
University of Bradford, England |    [`-']    He's got his beady eye on YOU!
i.rutson@bradford.ac.uk         |    -"-"-
Newsgroups: rec.bicycles.tech