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29er "pedals easier"



 
 
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  #1  
Old July 15th 18, 06:00 PM posted to rec.bicycles.tech
[email protected]
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Posts: 275
Default 29er "pedals easier"

I have a friend who just bought a new 29"-wheel Motobecane MTB and swears that, due to the larger-diameter wheels, it "pedals easier" than his old 26"-wheel MTB did.

Have you ever heard anyone say this before? I have.

Since the contention does not seem correct to me, I was just curious about how you gentlemen would respond to it?


  #3  
Old July 16th 18, 12:45 AM posted to rec.bicycles.tech
Andre Jute[_2_]
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Posts: 10,422
Default 29er "pedals easier"

On Sunday, July 15, 2018 at 7:34:25 PM UTC+1, AMuzi wrote:

...a big fat 700x54 rolls
over .... zombie bodies etc much
better than, say, a skateboard wheel:
--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971


The 29er rider is prepared for all eventualities!

AJ
Heh-heh!

  #4  
Old July 16th 18, 04:36 AM posted to rec.bicycles.tech
Jeff Liebermann
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Posts: 4,018
Default 29er "pedals easier"

On Sun, 15 Jul 2018 13:34:23 -0500, AMuzi wrote:

But in typical riding conditions, a big fat 700x54 rolls
over depressions, rocks, debris, zombie bodies etc much
better than, say, a skateboard wheel:

https://www.youtube.com/watch?v=kdwROHgPask


Ever notice that none of the numerous disaster movies show people
escaping on bicycles? The crowds are always running away from the
chaos either on foot or in various vehicles that eventually are
stomped flat by the monster or zapped by an alien flying machine.
Also, no motorcycles (except in "Meteor" and "Deep Impact"). I guess
the zombies know what they're doing by first destroying all the
bicycles.

"Bug Out Bike - Apocalypse Bicycle"
http://www.instructables.com/id/Bug-Out-Bike-Apocalypse-Bicycle/
I like the paint job. Unfortunately, I couldn't find any advice
suggesting that a 29" wheel was in any way superior to smaller wheels
for attacking or rolling over zombies. I suspect that the added
weight of the survivalist junk might ruin any benefits gained by a few
mm larger diameter tire. According to the movies, dead zombies will
bleed profusely, which will be too slippery to traverse on slick
tires. Instead, I recommend tires with some tread.

Or, just build your own 29" zombie crusher from plans:
http://www.atomiczombie.com


--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
  #5  
Old July 16th 18, 05:57 AM posted to rec.bicycles.tech
[email protected]
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Posts: 2,041
Default 29er "pedals easier"

On Sunday, July 15, 2018 at 10:36:09 PM UTC-5, Jeff Liebermann wrote:
On Sun, 15 Jul 2018 13:34:23 -0500, AMuzi wrote:

But in typical riding conditions, a big fat 700x54 rolls
over depressions, rocks, debris, zombie bodies etc much
better than, say, a skateboard wheel:

https://www.youtube.com/watch?v=kdwROHgPask


Ever notice that none of the numerous disaster movies show people
escaping on bicycles? The crowds are always running away from the
chaos either on foot or in various vehicles that eventually are
stomped flat by the monster or zapped by an alien flying machine.
Also, no motorcycles (except in "Meteor" and "Deep Impact").



I think no motorcycles escaping the zombies is simply because motorcycles are really not very prevalent in the USA. And the screen writers are simply reflecting reality in their movie. On the road near my house, I hear about one or two motorcycles per day riding up the road. Compared to about 500 or more cars traversing the same road over 24 hours. 1/500th is about 0.2% I'd guess that is about the percentage of motorcycle ownership in the USA. No one I know owns a motorcycle. But I think they all own two or three or four cars apiece.





I guess
the zombies know what they're doing by first destroying all the
bicycles.

"Bug Out Bike - Apocalypse Bicycle"
http://www.instructables.com/id/Bug-Out-Bike-Apocalypse-Bicycle/
I like the paint job. Unfortunately, I couldn't find any advice
suggesting that a 29" wheel was in any way superior to smaller wheels
for attacking or rolling over zombies. I suspect that the added
weight of the survivalist junk might ruin any benefits gained by a few
mm larger diameter tire. According to the movies, dead zombies will
bleed profusely, which will be too slippery to traverse on slick
tires. Instead, I recommend tires with some tread.

Or, just build your own 29" zombie crusher from plans:
http://www.atomiczombie.com


--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558


  #6  
Old July 16th 18, 07:11 AM posted to rec.bicycles.tech
Jeff Liebermann
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Posts: 4,018
Default 29er "pedals easier"

On Sun, 15 Jul 2018 21:57:01 -0700 (PDT), "
wrote:

I think no motorcycles escaping the zombies is simply because motorcycles are really not very prevalent in the USA. And the screen writers are simply reflecting reality in their movie. On the road near my house, I hear about one or two motorcycles per day riding up the road. Compared to about 500 or more cars traversing the same road over 24 hours. 1/500th is about 0.2% I'd guess that is about the percentage of motorcycle ownership in the USA. No one I know owns a motorcycle. But I think they all own two or three or four cars apiece.


Estimates from various web pages:
8.4 million motorcycles registered in the US in 2017.
263.2 million vehicles overall registered in the US in 2017.
66.5 million bicycle riders in 2016.

--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
  #7  
Old July 16th 18, 05:11 PM posted to rec.bicycles.tech
Doug Cimperman
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Posts: 147
Default 29er "pedals easier"

On 7/15/2018 10:36 PM, Jeff Liebermann wrote:
...
"Bug Out Bike - Apocalypse Bicycle"
http://www.instructables.com/id/Bug-Out-Bike-Apocalypse-Bicycle/
I like the paint job. Unfortunately, I couldn't find any advice
suggesting that a 29" wheel was in any way superior to smaller wheels
for attacking or rolling over zombies. I suspect that the added
weight of the survivalist junk might ruin any benefits gained by a few
mm larger diameter tire. According to the movies, dead zombies will
bleed profusely, which will be too slippery to traverse on slick
tires. Instead, I recommend tires with some tread.

Or, just build your own 29" zombie crusher from plans:
http://www.atomiczombie.com



I don't really think the idea of a "disaster bicycle" is really all that
good of an idea--but even ignoring that--running 29" tires would be
dumb, since 26" is way more common.
  #8  
Old July 16th 18, 05:25 PM posted to rec.bicycles.tech
AMuzi
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Posts: 13,447
Default 29er "pedals easier"

On 7/16/2018 11:11 AM, Doug Cimperman wrote:
On 7/15/2018 10:36 PM, Jeff Liebermann wrote:
...
"Bug Out Bike - Apocalypse Bicycle"
http://www.instructables.com/id/Bug-Out-Bike-Apocalypse-Bicycle/

I like the paint job. Unfortunately, I couldn't find any
advice
suggesting that a 29" wheel was in any way superior to
smaller wheels
for attacking or rolling over zombies. I suspect that the
added
weight of the survivalist junk might ruin any benefits
gained by a few
mm larger diameter tire. According to the movies, dead
zombies will
bleed profusely, which will be too slippery to traverse on
slick
tires. Instead, I recommend tires with some tread.

Or, just build your own 29" zombie crusher from plans:
http://www.atomiczombie.com



I don't really think the idea of a "disaster bicycle" is
really all that good of an idea--but even ignoring
that--running 29" tires would be dumb, since 26" is way more
common.


I changed my mind about that. 26" seemed to me, a medium
sized Italian guy, about right for offroad/technical riding;
lower to the ground, effectively smaller gearing, shorter
top tube and all that. My opinion changed once I saw a full
sized (muscular 6'5") rider on a his new 700-54 Gunnar.
That said, women just over five feet who ride in with
whatever new chinese 29-inch thing the local outlet store
foisted on her looks bizarre to me if not dorky.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971


  #9  
Old July 17th 18, 08:47 PM posted to rec.bicycles.tech
Joerg[_2_]
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Posts: 6,016
Default 29er "pedals easier"

On 2018-07-16 09:25, AMuzi wrote:
On 7/16/2018 11:11 AM, Doug Cimperman wrote:
On 7/15/2018 10:36 PM, Jeff Liebermann wrote:
...
"Bug Out Bike - Apocalypse Bicycle"
http://www.instructables.com/id/Bug-Out-Bike-Apocalypse-Bicycle/

I like the paint job. Unfortunately, I couldn't find any
advice
suggesting that a 29" wheel was in any way superior to
smaller wheels
for attacking or rolling over zombies. I suspect that the
added
weight of the survivalist junk might ruin any benefits
gained by a few
mm larger diameter tire. According to the movies, dead
zombies will
bleed profusely, which will be too slippery to traverse on
slick
tires. Instead, I recommend tires with some tread.

Or, just build your own 29" zombie crusher from plans:
http://www.atomiczombie.com



I don't really think the idea of a "disaster bicycle" is
really all that good of an idea--but even ignoring
that--running 29" tires would be dumb, since 26" is way more
common.



29" tires are very easy to obtain by now. There is a nice selection of
low cost Asian tires that hold up very well on rocky trails.


I changed my mind about that. 26" seemed to me, a medium sized Italian
guy, about right for offroad/technical riding; lower to the ground,
effectively smaller gearing, shorter top tube and all that. My opinion
changed once I saw a full sized (muscular 6'5") rider on a his new
700-54 Gunnar. That said, women just over five feet who ride in with
whatever new chinese 29-inch thing the local outlet store foisted on her
looks bizarre to me if not dorky.


I am 6'2" and don't feel right on a 26" MTB which I rode before. 29"
large frame but with the stem shortened to 80mm feels perfect. On
pavement it doesn't matter much but on some trails it does.

--
Regards, Joerg

http://www.analogconsultants.com/
  #10  
Old July 15th 18, 09:00 PM posted to rec.bicycles.tech
Frank Krygowski[_4_]
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Posts: 10,538
Default 29er "pedals easier"

On 7/15/2018 1:00 PM, wrote:
I have a friend who just bought a new 29"-wheel Motobecane MTB and swears that, due to the larger-diameter wheels, it "pedals easier" than his old 26"-wheel MTB did.

Have you ever heard anyone say this before? I have.

Since the contention does not seem correct to me, I was just curious about how you gentlemen would respond to it?


I might point someone to the book _Bicycling Science_ by Wilson.

All things being equal, on typical road surfaces, a larger diameter
wheel should roll easier. But for slight differences in diameter, I'd
expect the differences in rolling resistance to be slight.

I'd expect tire choice to have a greater effect. That includes tire
width, as well as tire construction. Choice of pressure will also be
significant, and higher pressures do not always mean lower rolling
resistance on real roads.

Then there are the psychological effects to deal with. If he believes it
rolls easier, his 29er may indeed post faster times. Ditto if he paints
the bike red, if it has European cachet, if he replaces his steel water
bottle screws with titanium ones, if he buys more aerodynamic
sunglasses, etc.


--
- Frank Krygowski
 




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