HDTenEightyP/NetNews huggingface dataset:
From: dfarrow@spam.ua.oz (Duncan Farrow)
Newsgroups: rec.bicycles.tech
Subject: Re: Cateye Micro average speed algorithm?
Date: 9 Oct 92 05:26:01 GMT
Organization: Stats Pure & Applied Maths, Uni of Adelaide, Australia

On the subject of dodgy cyclometer readouts, I have a similar experience
with my Avocet computer with the maximum speed shotting up to fanciful
values. I rarely look at it as it is either v_max or v_avg and I choose
the latter but one time when I looked at it, it said my maximum speed
was 119km/h which is absurd, the fasted I could remember going (and one
normally remembers that) was about 60km/h. So what's going on here? I 
think it might be connected to taking the computer on and off the bike
and this is in some way 'stimulating' the speed responce in the computer,
remember that you only have to be going 119km/h for a millisecond for it
to be a maximum speed. Anyone else had this happen with their computers?

Duncan.
From: shenry@cs.rice.edu (Sam Henry)
Newsgroups: rec.bicycles.tech
Subject: Re: Mail-order tools
Date: 8 Oct 92 21:16:00 GMT
Organization: Rice University, Houston

In article <1992Oct7.230357.18658@midway.uchicago.edu>
jss5@midway.uchicago.edu dislexizes: 
>The phone number I have for The Third Hand ( 916-262-2600 ) doesn't
>seem to work.  Does anyone have the correct number?

From my directory:

Third Hand       916/926-2600


-- 
sam henry <shenry@rice.edu>
Wanna ride?
Newsgroups: rec.bicycles.tech
From: brianh@hprisc-12.cae.wisc.edu (Brian Huilman)
Subject: Re: My sensor question
Distribution: usa
Date: 8 Oct 92 13:06:01 CDT
Originator: brianh@hprisc-12.cae.wisc.edu


In article <00961C8E.E942C7C0@vms.csd.mu.edu>, 2641nabedian@vms.csd.mu.edu writes:
> 	Thanks to all who have helped with my sensor question.  I have not yet 
> decided which is the best solution, but I certainly know more know than 
> before.  
> 
>  [stuff deleted]
> 
> 	Don't let this stop you from offering any other suggestions, though. 
> I TRULY appreciate all the guidance I have received from the net.  I have 
> learned a lot more from your comments than from the class itself!
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 Just curious Jay, what is your major and what year are you in.  From what I've
been following on the net, there hasn't been much help at all.  You are still
going to have to do the research and designs on your own, test, redesign, re-
test, re-redesign, etc.  I realize your thankful for the input, but there is
a lot more involved than just taking someones advice and going out and buying
a cycloputer sensor or reading the Thomas Index...

> 	Thanks again.
> 
> Jay Nabedian
> 2641nabedian@vms.csd.mu.edu

Good luck on your project.

Brian Huilman           University of Wisconsin - Madison
                        Department of Electrical/Computer Engineering
"Avoid the Bonk"        brianh@cae.wisc.edu
              _   __o
            ___  '\<,   "Speed is the reward for hard training."
              -  O/ O 
Newsgroups: rec.bicycles.tech
From: jscott@vardamir.next.nd.edu (James Scott)
Subject: TIME pedal maintenance
Keywords: clipless, time, overhaul, maintenance
Organization: University of Notre Dame
Date: Sat, 10 Oct 1992 17:57:16 GMT

After riding on them for more than a year, it's time to overhaul my time  
Sport pedals.  However, I recently realized that I don't have the  
slightest idea of how to get to the bearings.  Of course, I threw away any  
lit. that came with the pedals.

Has anyone done this before?  What tools are required?  What's the method?

Thanks,

James

--
James Scott                                        
jscott@cleese.next.nd.edu
University of Notre Dame                NeXTMail Appreciated
NeXT, Inc. Campus Consultant
(219)283-1599				AUDIX: x5429
Steve Jobs on son Reed:  "We had our own little custom app."
		(NeXTWORLD magazine, Fall 1992)
Newsgroups: rec.bicycles.tech
From: shenry@cs.rice.edu (Sam Henry)
Subject: Re: Triple chainrings on road bikes
Organization: Rice University, Houston
Date: Wed, 14 Oct 1992 16:45:34 GMT

In article <1992Oct14.142146.17304@athena.mit.edu>
aviator@athena.mit.edu (Joakim Karlsson) writes: 
>As an avid (but novice) mountain biker, I have come to relish
>my granny chainring for steep uphill single track ...

>I've started to look at road bikes, and see two basic decisions
>I need to make regarding components: ... (2) Dual chainrings vs.
>triple chainrings.  

>I plan to ride mostly in Massachusetts, but also in Vermont, Maine,
>and New Hampshire. 

As an avid tourer, I have come to appreciate the triple on my touring
bike.  It enables me to use half step gearing with the two larger, and
relatively close together (nr teeth) chainrings, and still have
steep-hill climbing ability.  I read "hills" where you are talking
about touring. 

Why I like the half-step/granny.

I have figured out why I have never been and will probably never be a
competitive cyclist. I forget to keep my head down and bore through.
I spend too much time, instead, gawking.  That means when I go up a
hill and it becomes real work, I will often switch to the granny to
support my gawking habit.  Still, with the half-step gearing, I can
handle most things with a shift and small adjustment in cadence.
Under loads, it is especially nice to have that really low ratio to
pull all that crap up the hills, especially the kind I usually
encounter around here (well, 70 mi north and west of here)--not very
steep, but they go on forever. 
-- 
sam henry <shenry@rice.edu>
Wanna ride?
From: slo@otter.hpl.hp.com (Steve Loughran)
Date: Wed, 7 Oct 1992 12:06:57 GMT
Subject: Re: helmet mounted lights?
Organization: Hewlett-Packard Laboratories, Bristol, UK.
Newsgroups: rec.bicycles.tech

In rec.bicycles.tech, conway@cstr.ed.ac.uk (Steve Conway) writes:


> I've vaguely thought about putting an LED rear light (Vetta ?) on my
> bike permanently so I always have a rear light for those days when I
> don't take lights because I won't be riding in the dark, but the
> Scottish weather decides to imitate darkness at noon.

I used to live there too: there are very few "will I be benighted?" problems.
1. Use the lights from October to February.
2. Take the lights off from April to August -it may be dark between 11pm and 
   2 am, but with the pubs still open it doesn't matter.
3. Worry about September and March

I find the little led lights good because they don't get stolen -yet,
even when the saddle, seatpost and anti-theft seatpost-QR mech next to it
are. So I can cycle home standing up all the way but still safely lit ;-)

> I've also thought about borrowing my friend's Silva head-torch setup
> (used for night orienteering - 30W standard light switchable to 60W if
> I recall correctly) to take on a run (not cycling) I do, where I am
> mainly on unlight roads, with sidewalk, and the motorists never dip
> their headlights for mere pedestrians - "If you won't dip neither will
> I !!!" :-) 

Head torches are good for this and cars thinking of turning across your 
path. Although maybe a better way to psych out cars who dont dip their
lights would be to have a flexible mirror hanging off the side of their bike-
then all they'll see will be a car racing towards them....

	-Steve


Newsgroups: rec.bicycles.tech
From: kiisaka@csi.uottawa.ca (Ken Iisaka (the mad pianist))
Subject: Chris King headset opinion solicited
Organization: Dept. of Computer Science, University of Ottawa
Date: Thu, 8 Oct 92 03:30:10 GMT

I am stunned by how components wear so fast on our Burley Duet.  After 1500
miles, one chainring, a freewheel, and a headset needs replacing.

The original equipment, Tange/Tioga Avenger is getting rough, though it has 
been maintained properly.  (I mean, my Chorus headset has last 7000 miles on
my Pinarello, already.)  I could give it a second life by replacing the caged
ball bearings with loose balls, I am seriously considering getting a better
quality headset.

I noticed that Steve Roberts is using a Chris King headset on his BEHEMOTH
recumbent.  I understand that it uses cartridge bearings.  Now, questions to
those who have had experience with a CK headset.

Are the cartridge bearings easily replaceable?
What is the stack height?
How durable is it, anyway ('d better be, at $100 U.S. a set)
How well sealed are the bearings?

Other alternatives include Onza and American Classic needle bearing headsets,
but if cartridges are easily replaceable, I'd consider a CK.

Whaddyathink?
-- 
Ken Iisaka               \ NEXT RECITAL  |12:00 pm, Thursday, January 7th, 1993
kiisaka@csi.uottawa.ca     \ Produced by |National Gallery of Canada, Ottawa
AI Lab, University of Ottawa \ CBC Stereo|Berg        Sonata, b minor, op. 1
H: +1 613 237 6642 W: 564 8155 \ 103.3 FM|Mussorgsky  Pictures at an Exhibition
Newsgroups: rec.bicycles.tech
From: J105270@LMSC5.IS.LMSC.LOCKHEED.COM
Subject: Re: Building up a frame
Organization: Lockheed Missiles & Space Company, Inc.
Date: Wed, 14 Oct 92 18:47:32 GMT

I hope some of the more knowledgeable cyclists post some good stuff since I
am in the same situation except that I have already bought a frameset. It came
with some parts but not enough to make it worthwhile to piece together with
additional parts from elsewhere (I did not want junk). I drew up a budget with
what I had v. needed and found it would be better to sell what I had and get
a group. I have pretty much resigned myself to a more expensive bike if I do
it myself rather than a shop but I will be doing it to learn. I, too, would
like to know about special tools/costs and would be interested in pointers.

MJG
Newsgroups: rec.bicycles.tech
From: "richard underwood" <richard.underwood@canrem.com>
Subject: computer attachments
Reply-To: "richard underwood" <richard.underwood@canrem.com>
Organization: Canada Remote Systems
Distribution: rec
Date: 9 Oct 92 00:00:13 EST

To: arpepper@math.uwaterloo.ca

Hi Adrian,

You might remember me from your last days
at Motorola Dacscan.  How is Waterloo?  Are you
still riding and eating those enourmous lunches?

I've been riding to work most of the summer and
now that we have a shower installed, will try to
ride into the winter.  Mountain Equip. Co-Op has
helped with long pants, gloves, silk balaklava
and warm jersey.  What do you wear for cold, (or
does your beard suffice).

Actually I have been wanting to get hold of you to
ask for some recipes.  This bike riding uses a
lot more fuel than pedling a desk!  I seem to
remember you having tasty low fat lunches
every day.  The doctor wants me to go on a very low
fat diet (anti cholesterol) but it's boring and leaves
me hungry.  If you still have good lunches, I would
apreciate if you share the recipes.

Another favour to ask if you don't mind.  I would
like to be able to E-Mail my brother is South Africa.
Could you find the usenet maps of RSA for me, I think they
are called UZAF or similar.

Incidently, I did the 1000km Cycle for kids 92 from
Qubec City to Toronto.  Sponorship money goes
to Christian Childrens Fund of Canada - a non profit
organization helping third world children regardless
of race or religion.

The reason for the shower is that we have now shrunk
to only 22 people and two bays.  The landlord has
remodeled, moving the lunch room to where Garry's office
was, the drawing office into the computer room, and the
entrance is through what was Aarons office.

AP>Has anyone ever seen or made something to attach to the mounting
AP>bracket of a cyclocomputer which will allow a signal to be sent to some
AP>input port of a computer.  Then all manner of software could be written
AP>which could do everything from automatically recording logs to
AP>providing imaginary scenery and adversaries for roller riding.

The electronics for this are straight forward, the mechanical
aspects (for the 'one of' hobby project) are probably more
complex than just soldering a connector onto the wires.
Give me a call if you are at all serious about the commercial
possibilites of such a gizmo.  (416) 292-7948

richard.underwood@canrem.com (Richard Underwood)
---
  DeLuxe 1.25 #1711  I tried the rest but bought the best!!!!
--
Canada Remote Systems  - Toronto, Ontario
World's Largest PCBOARD System - 416-629-7000/629-7044
Newsgroups: rec.bicycles.tech
From: pardo@cs.washington.edu (David Keppel)
Subject: Re: Anti-lock brakes
Organization: Computer Science & Engineering, U. of Washington, Seattle
Date: Wed, 7 Oct 92 16:37:46 GMT

>jdg41088@uxa.cso.uiuc.edu (Pickaxe) writes:
>>[What about anti-lock brakes for bicycles?]

Eric Praetzel writes:
>[It's been done, here's what some systems look like: ...]

Most auto-type antilock brakes have an inertial device to control the
brake.  The inertial device spins with the wheel and if the wheel slows
gradually, so does the intertial device.  If the wheel locks suddenly,
the inertial device keeps spinning and that drives a mechanism to
momentarily release the brakes.  Newer systems use electronics and
if the wheel suddenly appears to be decelerating at 5g, the system
momentarily releases the brakes (it's more complicated than that, but I
don't understand all the details).

Most bicyle ``antilock'' brakes rely on forces produced by the brakes.
The example in Whitt & Wilson's _Bicycling Science_ actuates one brake
with forces modulated by another brake.  If the rim stops, the main
brake is released, hence it is antiskid.  However, if the rim gets wet,
the brake forces on the `leading' brake go down, reducing the brake
forces produced by the `follower' brake, thus reducing your total brake
capacity even though there hasn't been a skid.

>[You'd have trouble staying upright with pulsing brakes.]

Experiments by BMW with motorcycle antilock brakes indicate exactly the
opposite: when the front wheel loses traction the antilock brake can
recover front wheel traction fast enough to keep the cyclist from
spilling, whereas even professional riders have difficulty recovering
from front wheel skids.

Another issue is How is panic braking affected by the antiskid feature?
Various antiskid systems were developed for cars in the 1960's and they
did help to stop the car in control.  However, they increased the total
distance needed to stop.

I suspect the biggest problem is getting something that is both
effective and lightweight.  Traditional bike systems have caused more
problems than they solve and auto/motorcycle systems have been heavy.
Probably electronic systems coupled with hydraulic brakes are the most
promising.

	;-D on  ( Worth it to stop and weight? )  Pardo

---- Begin digression

tomk@netcom.com (Thomas H. Kunich) writes:
>[I only lock up brakes in the rain or on oily surfaces.]

I'm sure glad it never rains in Seattle.  Or snows in Nebraska.  Or
gets slushy in New England.

somebody else writes:
>[Hey, skidding is good, somtimes it's the best way to steer.]

Sometimes a fixed-gear bike with no brakes is the best choice for a
given course.  Let's all ride them always.  Then we don't need to worry
about antilock brakes!

---- End digression
Newsgroups: rec.bicycles.tech
From: hoppe@cs.cornell.edu (Bruce E. Hoppe)
Subject: Re: TIME pedal maintenance
Organization: Cornell University, CS Dept., Ithaca, NY
Distribution: usa
Date: Tue, 13 Oct 1992 21:36:44 GMT

John T. Rasper writes:
|> OK, we've answered the question about the rear cover plate. Now,
|> what does that red lever wrapped around the 'axle' do?
|> 
|> John Rasper                         Hewlett-Packard COL
|> johnr@col.hp.com                    P.O. Box 2197
|> (719) 590-5895                      Colorado Springs, CO 80901-2197

From experience, I can report that there is a lot more slop in the cleat-
pedal interface when this do-hickey is broken.  The pedals work much better
with the red things in.

Bruce Hoppe
hoppe@cs.cornell.edu
Newsgroups: rec.bicycles.tech
From: stecko@cntrol.enet.dec.com ()
Subject: Re: I need advice with my MTB brake cables...
Reply-To: stecko@cntrol.enet.dec.com ()
Organization: Digital Equipment Corporation
Distribution: usa
Date: Fri, 9 Oct 1992 21:36:39 GMT



|>From: paynter@bnr.ca (Stuart Paynter)
|>
|>This is not a "low end setup", This is the same for Deore DX
|>brakes.  It is a pain in the ass to center without the special
|>Shimano tools.


	What special tools?  It is a pain it the butt to center and
	I don't see any reasonalble advantage to this setup.


	TDS
From: dodd@mycenae.cchem (N/A)
Newsgroups: rec.bicycles.tech
Subject: Re: Cateye Micro average speed algorithm?
Date: 14 Oct 92 04:16:46
Organization: Dept of Chemical Engineering, Polytechnic Univ, NY, USA
NNTP-Posting-Host: mycenae.cchem.berkeley.edu
In-reply-to: weaver@chdasic.sps.mot.com's message of 13 Oct 92 23:47:02 GMT


>>>>> "Dave" == Dave Weaver <weaver@chdasic.sps.mot.com> writes:

>On the subject of dodgy cyclometer readouts, I have a similar experience
>with my Avocet computer with the maximum speed shotting up to fanciful
>values. I rarely look at it as it is either v_max or v_avg and I choose
>the latter but one time when I looked at it, it said my maximum speed
>was 119km/h which is absurd, the fasted I could remember going (and one
>normally remembers that) was about 60km/h. So what's going on here? 

  Dave> I had that problem with my Avocet 40. It was at the steepest section of 
  Dave> a long climb where, in my lowest gear, I could barely keep the pedals turning.
  Dave> The Avocet 40 went nuts and showed my speed at 80 to 110miles/hr. I think it 
  Dave> is related to the positioning of the receiver next to the magnetic ring. I 
  Dave> adjusted mine a few times and I haven't had that problem in a while.

My Cateye Micro used to go crazy occasionally also...average speeds of 70 mph
or more were not uncommon (and not unappreciated :)).  I always attributed it
to all the salt from my sweat that had dripped on to the display for two
years.

Newsgroups: rec.bicycles.tech
From: naidu@cbnewsg.cb.att.com (naidu.gandham)
Subject: SPD Shoe Modification
Keywords: Adding heel material
Organization: AT&T
Date: Wed, 7 Oct 1992 21:07:14 GMT


I just got a pair of Specialized's SPD Ground Control Sport Shoes.
I plan to use them mainly while touring/recreation riding (road) 
and for walking around when I'm not on the bike.  

The heels of these shoes are a 1/2" to 3/4" lower than the front
portion of the shoe, making them uncomfortable for walking around.
I was wondering if I could add material to the heel area of the sole 
for a more even walking position.

Has anybody with these shoes tried this?  Any pros and cons?

PS: I'm not sure if this belongs in r.b.tech.  Please re-direct if
it does not.  Thanks.
Newsgroups: rec.bicycles.tech
From: mjs@fc.hp.com (Marc Sabatella)
Subject: Re: I need advice with my MTB brake cables...
Date: Fri, 9 Oct 1992 19:44:57 GMT
Distribution: usa
Reply-To: marc@hpmonk.fc.hp.com
Organization: Hewlett-Packard Fort Collins Site
X-Newsreader: TIN [version 1.1.2 PL6]

:        this side is	  -----> |
: 	all one piece		 |
: 				/ \
: 			  --->/     \<-------this is a separate piece  
:      	                    /         \
: 
: I seem to see this setup on the lower-end MTB's, and I was wondering why?

As someone else observed, it's not lowend only; it is on DX and for all I know
XT as well.  You are right, it is a pain in the butt.  I often cheat, and
rather than keep the legs the same length, I use the shoe adjustment (ie, slide
the shoe in and out) to keep the pads the same distance from the rims, and
don't sweat the centering on the pull all that much.  Which almost certainly
will lead to faster wear on one side than the other, meaning I'll have to keep
readjusting more often than if I did it right to begin with.

I have been led to believe this design aids in the "low profile" aspect - you
can get better leverage and tighter angles without compromising the cable this
way, so the cantilevers don't have to stick out so far.  I'm not sure I buy it,
but that's what I've been told.

--
Marc Sabatella
marc@hpmonk.fc.hp.com
Newsgroups: rec.bicycles.tech,rec.bicycles.marketplace
From: M16302@mwvm.mitre.org
Subject: Re: shock absorbing seatposts
Organization: The MITRE Corporation, McLean VA 22102
Date: Thu, 15 Oct 1992 19:50:28 GMT

I done't know about shock-abs post,but tried a turbomatic shock abs. saddle.
The shock absorbing worked well but the shape of the saddle didn't fit my
rear. P.S., Do you know anything about Ribble framemakers in the UK?
In article <1992Oct14.184330.8455@lut.ac.uk>
 
P.Skilbeck@lut.ac. writes:
 
>
>In article <1992Oct13.181115.12087@kestrel.edu> king@reasoning.com (Dick King) writes:
>>
>>Has anyone out there tried one?
>>
>>>I have used a USE sprung seat pin: off road for mountain bike racing;
>>>on road for aound town and cycle touring uses.
>>>mtb racing:
>>>Forget it.  This is a tough sport and the sprung seat pin doesn't
>>>make it any less so.  No matter what the pre-load,  bottom-out still
>>>occurs, which defeats the purpose and worse because the rider is less
>>>prepared for the jolt than on an unsprung pin.  Also, the seat bobs
>>>up and down in rhythm with the cadence.  This is biomechanically
>>>inefficient and is also downright irritating.
>>>on road around town:
>>>Highly recommended.  Crank up the pre-load to a hard setting (I weigh 78kg)
>>>and have a comfortable ride.  The seat still bobs, but it is not a
>>>source of irritation, as biomechanical efficiency comes beneath comfort
>>>on my list of priorities when not racing.
>>>on road touring: Highly recommended.  Much the same applies as for
>>>around town use.  The spring absorbs a lot of shock that would have
>>>jolted the pelvis and spine throughout the course of a day's riding.
>>>It would be difficult to quantify it, but the liklihood exists that
>>>I actually arrived at the day's destination in a slightly less
>>>fatigued state.
Newsgroups: rec.bicycles.tech
From: paynter@bnr.ca (Stuart Paynter)
Subject: Re: I need advice with my MTB brake cables...
Reply-To: paynter@bnr.ca (Stuart Paynter)
Organization: Bell-Northern Research Ltd.
Distribution: usa
Date: Fri, 09 Oct 92 17:35:21 GMT

This is not a "low end setup", This is the same for Deore DX
brakes.  It is a pain in the ass to center without the special
Shimano tools.


Stuart
Organization: Stanford Linear Accelerator Center
Date: Tuesday, 13 Oct 1992 12:17:01 PST
From: <TOM@SLACVM.SLAC.STANFORD.EDU>
Newsgroups: rec.bicycles.tech
Subject: Expensive/Inexpensive Tires

I saw the ad in Nashbar on Michelin Super Comps, rides like a tubular they clai
m.  I also read the Re. by KOREN on Kelvar belted tires.  Now my concern is,
is it really worth buying the more expensive tires?  Can you tell the differenc
e?
Newsgroups: rec.bicycles.tech
Subject: Re: Dealing with broken MTB derailleur
From: news@massey.ac.nz (USENET News System)
Date: Mon, 12 Oct 92 01:00:53 GMT
Followup-To: rec.bicycles.tech
Organization: SMIS, Massey University

r.g.olsen@att.com (Ron Olsen) wrote about shortening a chain to make his
bike a single speed after a branch broke his rear derailleur...

And went on to say:

> I may invest in a rear derailleur guard; it seems as if
> tree branches have an affinity for my derailleur...

I lost a rear derialleur to the same fate.  Initially, I solved the problem
by replacing it with a short cage rear derailleur.  The increased clearance
seemed to prevent branches, etc from being picked up, but extra caution on
my part when riding over them probably helped just as much.  In the end, I
wasn't happy with the limited ratios available in the granny chainring, so
I'm back to a standard rear derailleur. I have possibly prevented a
recurrence a couple of times by stopping if there was resistance to
pedalling or anything else suspicious going on down there.

--
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+13
Organization: Pittsburgh Supercomputing Center, Carnegie Mellon, Pittsburgh, PA