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Speaking of innovation...



 
 
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  #1  
Old October 14th 11, 04:48 PM posted to rec.bicycles.tech
Frank Krygowski[_3_]
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Posts: 1,365
Default Speaking of innovation...

Speaking of innovation: Here's an article on wireless bicycle brakes
from a British online engineering magazine www.theengineer.co.uk

http://tinyurl.com/3jr2qax

One disturbing detail is the claim that "The current design enables the
cruiser bike to brake within 250 milliseconds, meaning a cyclist
travelling at 30kph has a 2m stopping distance." (Stopping at over 1.75
gees on a bicycle? Sorry, that's impossible in several ways.)

I'm sure that statement is not the fault of the brake system designers,
but the journalist. But if an engineering journalist gets such a thing
wrong, how can we expect good information from the popular press?

Now, having drawn attention to that exercise, it seems the designers
were not really interested in bike brakes at all, except as a conceptual
test bed. The actual exercise was to work on IT concepts related to
reliability and speed, as explained much better in this article:
http://www.itworld.com/mobile-wirele...ess-bike-brake

or http://tinyurl.com/5uzk59x

--
- Frank Krygowski
Ads
  #2  
Old October 14th 11, 05:11 PM posted to rec.bicycles.tech
Dan O
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Posts: 6,098
Default Speaking of innovation...

On Oct 14, 8:48*am, Frank Krygowski
wrote:
Speaking of innovation: *Here's an article on wireless bicycle brakes
from a British online engineering magazinewww.theengineer.co.uk

http://tinyurl.com/3jr2qax

One disturbing detail is the claim that "The current design enables the
cruiser bike to brake within 250 milliseconds, meaning a cyclist
travelling at 30kph has a 2m stopping distance." *(Stopping at over 1.75
gees on a bicycle? *Sorry, that's impossible in several ways.)

I'm sure that statement is not the fault of the brake system designers,
but the journalist. *But if an engineering journalist gets such a thing
wrong, how can we expect good information from the popular press?

Now, having drawn attention to that exercise, it seems the designers
were not really interested in bike brakes at all, except as a conceptual
test bed. *The actual exercise was to work on IT concepts related to
reliability and speed, as explained much better in this article:http://www.itworld.com/mobile-wirele...-wireless-apps...

orhttp://tinyurl.com/5uzk59x


Well (without having looked at any of the links), I will say they
certainly picked an application where reliability is key.
  #3  
Old October 14th 11, 05:11 PM posted to rec.bicycles.tech
kolldata
external usenet poster
 
Posts: 2,836
Default Speaking of innovation...

On Oct 14, 8:48*am, Frank Krygowski
wrote:
Speaking of innovation: *Here's an article on wireless bicycle brakes
from a British online engineering magazinewww.theengineer.co.uk

http://tinyurl.com/3jr2qax

One disturbing detail is the claim that "The current design enables the
cruiser bike to brake within 250 milliseconds, meaning a cyclist
travelling at 30kph has a 2m stopping distance." *(Stopping at over 1.75
gees on a bicycle? *Sorry, that's impossible in several ways.)

I'm sure that statement is not the fault of the brake system designers,
but the journalist. *But if an engineering journalist gets such a thing
wrong, how can we expect good information from the popular press?

Now, having drawn attention to that exercise, it seems the designers
were not really interested in bike brakes at all, except as a conceptual
test bed. *The actual exercise was to work on IT concepts related to
reliability and speed, as explained much better in this article:http://www.itworld.com/mobile-wirele...-wireless-apps...

orhttp://tinyurl.com/5uzk59x

--
- Frank Krygowski


Frank, I stop in 8 feet. Have scars to prove it.
  #4  
Old October 14th 11, 05:29 PM posted to rec.bicycles.tech
DirtRoadie
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Posts: 2,915
Default Speaking of innovation...

On Oct 14, 9:48*am, Frank Krygowski *

But if an engineering journalist gets such a thing
wrong, how can we expect good information from the popular press?


Got it.
Anything "engineering" related, journalists included, is expected to
be perfect.
ALL other human endeavors are flawed.

Frank, You are hilarious!
DR
  #5  
Old October 14th 11, 05:57 PM posted to rec.bicycles.tech
Ben Pfaff
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Posts: 176
Default Speaking of innovation...

Frank Krygowski writes:

One disturbing detail is the claim that "The current design enables
the cruiser bike to brake within 250 milliseconds, meaning a cyclist
travelling at 30kph has a 2m stopping distance." (Stopping at over
1.75 gees on a bicycle? Sorry, that's impossible in several ways.)


A cyclist traveling at 30kph travels about 2 m in 250 ms, so the
correct statement may be that a cyclist traveling at that speed
may *start* braking after traveling 2 m.
--
"Sanity is not statistical."
--George Orwell
  #6  
Old October 14th 11, 06:18 PM posted to rec.bicycles.tech
Chalo
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Posts: 5,093
Default Speaking of innovation...

DirtRoadie wrote:

Frank Krygowski **

But if an engineering journalist gets such a thing
wrong, how can we expect good information from the popular press?


Got it.
Anything "engineering" related, *journalists included, is expected to
be perfect.
ALL other human endeavors are flawed.

Frank, You are hilarious!


An engineer to bungling the numbers that badly would be like a print
journalist flagrantly misspelling common words, or a video journalist
letting the camera wander off the subject. It's central to what they
do, and you can expect them to do at least a passable job.

Just like a fashion and celebrity reporter is supposed to get names
and events right, and engineering reporter is supposed to get units
and orders of magnitude right.

Chalo
  #7  
Old October 14th 11, 06:55 PM posted to rec.bicycles.tech
DirtRoadie
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Posts: 2,915
Default Speaking of innovation...

On Oct 14, 11:18*am, Chalo wrote:
DirtRoadie wrote:

Frank Krygowski **


But if an engineering journalist gets such a thing
wrong, how can we expect good information from the popular press?


Got it.
Anything "engineering" related, *journalists included, is expected to
be perfect.
ALL other human endeavors are flawed.


Frank, You are hilarious!


An engineer to bungling the numbers that badly would be like a print
journalist flagrantly misspelling common words, or a video journalist
letting the camera wander off the subject. *It's central to what they
do, and you can expect them to do at least a passable job.

Just like a fashion and celebrity reporter is supposed to get names
and events right, and engineering reporter is supposed to get units
and orders of magnitude right.



The error.appears to be confusing "response" time with "stopping"
time. But Frank can barely restrain his distorted perspective that
engineering is a discipline which somehow stands above all other human
endeavors in its expectation of accuracy. As you aptly point out, this
expectation is not exclusive to engineering. And in any arena,
INCLUDING engineering, accuracy slips from time to time.

Frank would see a story with a typo about a "bare" getting into trash
at a campground and conclude that the story was erroneous because
there is no such animal as a "bare." A more supple mind would simply
make the mental correction from "bare" to "bear" and move on.

DR

  #8  
Old October 14th 11, 06:56 PM posted to rec.bicycles.tech
Mike Causer[_3_]
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Posts: 188
Default Speaking of innovation...

On Fri, 14 Oct 2011 11:48:25 -0400
Frank Krygowski wrote:

Speaking of innovation: Here's an article on wireless bicycle brakes
from a British online engineering magazine www.theengineer.co.uk

http://tinyurl.com/3jr2qax

One disturbing detail is the claim that "The current design enables the
cruiser bike to brake within 250 milliseconds, meaning a cyclist
travelling at 30kph has a 2m stopping distance." (Stopping at over 1.75
gees on a bicycle? Sorry, that's impossible in several ways.)

I'm sure that statement is not the fault of the brake system designers,
but the journalist. But if an engineering journalist gets such a thing
wrong, how can we expect good information from the popular press?


By the look of other articles there the magazine does not employ
journalists to write. It employs a copy-typist/sub-editor who takes
press releases and cuts them to fit on the page.


However it could be a mistake in translation somewhere along the line.
the original press release ( http://idw-online.de/pages/de/news445601 )
says: "Mit der aktuellen Ausstattung schafft es das Cruiser Bike
spätestens nach 250 Millisekunden zu bremsen, was bei einer
Geschwindigkeit von 30 Kilometer pro Stunde einem Reaktionsweg von zwei
Metern entspricht."

Which I read as a reaction distance of 2 meters (for the mechanism).


Making the design fail 100 times in 100 attempts is of course trivial.....




Mike

  #9  
Old October 14th 11, 07:07 PM posted to rec.bicycles.tech
AMuzi
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Posts: 13,447
Default Speaking of innovation...

Frank Krygowski
But if an engineering journalist gets such a thing
wrong, how can we expect good information from the popular press?


DirtRoadie wrote:
Got it.
Anything "engineering" related, journalists included, is expected to
be perfect.
ALL other human endeavors are flawed.
Frank, You are hilarious!


Chalo wrote:
An engineer to bungling the numbers that badly would be like a print
journalist flagrantly misspelling common words, or a video journalist
letting the camera wander off the subject. It's central to what they
do, and you can expect them to do at least a passable job.

Just like a fashion and celebrity reporter is supposed to get names
and events right, and engineering reporter is supposed to get units
and orders of magnitude right.


Speaking of which, the first entry in this link from Mr
Liebermann:
http://showbikers.com/category/bicycle/future-bike/

used the descriptor, "very unique".

sheesh!

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971
  #10  
Old October 14th 11, 07:18 PM posted to rec.bicycles.tech
DirtRoadie
external usenet poster
 
Posts: 2,915
Default Speaking of innovation...

On Oct 14, 12:07*pm, AMuzi wrote:
Frank Krygowski *
But if an engineering journalist gets such a thing
wrong, how can we expect good information from the popular press?

DirtRoadie wrote:
Got it.
Anything "engineering" related, *journalists included, is expected to
be perfect.
ALL other human endeavors are flawed.
Frank, You are hilarious!

Chalo wrote:
An engineer to bungling the numbers that badly would be like a print
journalist flagrantly misspelling common words, or a video journalist
letting the camera wander off the subject. *It's central to what they
do, and you can expect them to do at least a passable job.


Just like a fashion and celebrity reporter is supposed to get names
and events right, and engineering reporter is supposed to get units
and orders of magnitude right.


Speaking of which, the first entry in this link from Mr
Liebermann:http://showbikers.com/category/bicycle/future-bike/

used the descriptor, "very unique".

sheesh!

I understand your (pedantic) point, but it relies upon the first
definition found he
http://www.merriam-webster.com/dictionary/unique

Jump to the third definition and the cited usage may be less
objectionable.

And your specific perspective is addressed in the commentary.

I suppose we could endlessly debate whether language should or should
not be allowed some flexibility and ability to evolve.

DR
 




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