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PostPosted: Thu Jan 05, 2017 6:24 am 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 953
Spotted this on my travels,

"Cervelo claims that mounting the Garmin on top of the stem is faster in a wind tunnel than out in front."

http://www.bikeradar.com/us/road/news/a ... 015-42254/


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Posted: Thu Jan 05, 2017 6:24 am 


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PostPosted: Thu Jan 05, 2017 7:32 am 
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Joined: Sat Apr 18, 2009 8:59 am
Posts: 1009
Location: Surrey UK
Not having widely available front mounts for Cervelo aero bar on the market, I'm not surprise that they came with this statement :)

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PostPosted: Thu Jan 05, 2017 7:52 am 
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Joined: Tue Jan 20, 2015 3:43 pm
Posts: 116
1415chris wrote:
Not having widely available front mounts for Cervelo aero bar on the market, I'm not surprise that they came with this statement :)

+1

Sent from my SM-G930F using Tapatalk


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PostPosted: Thu Jan 05, 2017 8:40 am 
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Joined: Wed Jan 22, 2014 11:48 am
Posts: 2453
Location: Vienna Austria
Mount it to the top tube behind the stem.


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PostPosted: Thu Jan 05, 2017 8:41 am 
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Joined: Wed Oct 06, 2004 6:55 pm
Posts: 2590
Location: Vienna, AUT
Not sure about the aerodynamics, but out front is easier to read when going fast and arguably safer; that counts for something.


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PostPosted: Thu Jan 05, 2017 9:40 am 
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Posts: 953
Aye, they would say that wouldn't they! :P

Out in front also looks better to my eye.


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PostPosted: Thu Jan 05, 2017 11:22 am 
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Joined: Fri Sep 25, 2015 3:12 pm
Posts: 136
dat insane +2cm^2 of frontal area....

Stolichnaya wrote:
but out front is easier to read when going fast and arguably safer; that counts for something.

agreed


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PostPosted: Thu Jan 05, 2017 11:40 am 
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Joined: Sun Jun 18, 2006 10:29 am
Posts: 6678
Location: Athens, Greece
Underneath the saddle is the most aero. Aero rules! :thumbup:

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PostPosted: Thu Jan 05, 2017 1:24 pm 
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Another bullshit Cervelo claim.

Take everything from Cervela with a grain of Salt.


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PostPosted: Thu Jan 05, 2017 1:43 pm 
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Joined: Wed Jan 27, 2016 1:39 pm
Posts: 678
Rather than just make a claim, Specialized put it o the "win" tunnel test.

https://youtu.be/emBR0gOb6oE?list=PLcmaLnqmqDnmn_bCR0RJ-soSCDKCKR97t

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PostPosted: Thu Jan 05, 2017 3:03 pm 
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Location: Athens, Greece
So Cervelo's claim is scientificaly proved BS. Good.

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PostPosted: Thu Jan 05, 2017 6:21 pm 
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Posts: 31
Specialized used 17 degree stem in test, I think.

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PostPosted: Thu Jan 05, 2017 6:45 pm 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 953
Okay so bullshit then, thanks for the vid!

Got the bike home today and was dying to get some sort of ride on it. Couldn't get the mount on the stem, no band long enough. Got it on the bar though and found a Lezyne light that was stretchy enough to go over the bars. Sun had set so wanted some blinky thing.

Have a posh light like Strada MK7 and posh K-Edge mounts for Garmin, and GoPro. All useless!

This is my current setup :|

Image


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PostPosted: Thu Jan 05, 2017 6:46 pm 
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Joined: Sat Apr 16, 2016 6:52 pm
Posts: 308
Location: London
Same as mine:

Image

I'm seriously contemplating changing to an Enve Aero bar and stem combo due to their out front mount looking so sleek...

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'15 Scott Addict Team - 6850g Sold
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Posted: Thu Jan 05, 2017 6:46 pm 


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PostPosted: Thu Jan 05, 2017 7:04 pm 
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Joined: Wed Jan 27, 2016 1:39 pm
Posts: 678
kgt wrote:
So Cervelo's claim is scientificaly proved BS. Good.


yes and no... I'm not an aero expert, but I do a fair bit of TT racing, so I pay attention to the aero tests and from what I gather, anything out front, in the wind, in clean air, has a pretty dramatic effect, while stuff toward the back of the bike doesn't seem to be as important because the air is already seeing a lot of turbulence. Here's how I analyze their claim.... let's assume a standard baseline bike, a general, all-around climbing bike, maybe an R5 with a standard round bar. Then, Cervelo designs the S5 with their handlebar/stem combo and that set up improves the aero over the baseline by 3%, putting the Garmin on stem (because an out front doesn't quite work) doesn't negate that 3%, maybe it only knocks it down to 1.5%. So the bar stem combo still puts you ahead in the aero game even if you do have to mount the Garmin on stem.

mortirolo wrote:
Specialized used 17 degree stem in test, I think.


Yes, the bike being used is Cam Piper's personal bike and it appears as if he's using a -17* Zipp Service Course SL. Specialized has stated in numerous materials and aero reports that a -17* stem is the most aero because it puts the entire length of the stem behind the faceplate, shielding it from the wind.... its because of this, that they came up with the rider handlebars for the Venge Vias, allowing for riders to keep the same fitment with a -17* as they would with maybe a -12* or -6* stem and standard bars.

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http://www.skratchlabs.com
2015 Specialized S-Works Allez
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