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PostPosted: Fri Jul 01, 2011 10:12 am 
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Joined: Sun Apr 24, 2011 6:23 am
Posts: 643
Location: Melbourne, Australia
So... It's finally released. Time to start saving... :wink:

Image

Image

More here.

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PostPosted: Fri Jul 01, 2011 10:37 am 
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Joined: Mon Sep 27, 2010 8:38 am
Posts: 502
Easton needs to come up with a less obnoxious decal for those TT wheels.


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PostPosted: Fri Jul 01, 2011 10:40 am 
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Joined: Tue Sep 28, 2010 10:30 pm
Posts: 313
It must be reeeeeeealy good...look at the dude's response in the second picture (the one with the glasses).

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It's not how much you spend on a bike it's how hard you can ride it.


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PostPosted: Fri Jul 01, 2011 10:41 am 
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Joined: Tue Sep 28, 2010 10:30 pm
Posts: 313
LOVE the front brake calliper idea too. Looks like a few bike manufacturers are catching on that idea

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PostPosted: Fri Jul 01, 2011 10:50 am 
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Location: Melbourne, Australia
Mikmik wrote:
It must be reeeeeeealy good...look at the dude's response in the second picture (the one with the glasses).

Ah... the drooling of bike envy :mrgreen:

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PostPosted: Fri Jul 01, 2011 11:27 am 
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Posts: 313
hansonator69 wrote:
Mikmik wrote:
It must be reeeeeeealy good...look at the dude's response in the second picture (the one with the glasses).

Ah... the drooling of bike envy :mrgreen:


I bet he is on the verge of not being able to stop himself from touching it.....neither would I :)

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It's not how much you spend on a bike it's how hard you can ride it.


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PostPosted: Fri Jul 01, 2011 6:23 pm 
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Joined: Sun Sep 21, 2008 9:07 pm
Posts: 1036
Location: Slovenia---that forest land
is it the most aero? (faster than Trek,Speci, Cucuma..)

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PostPosted: Fri Jul 01, 2011 6:54 pm 
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Posts: 960
Location: USA
kavitator wrote:
is it the most aero? (faster than Trek,Speci, Cucuma..)


I would say no, but I am no Aerodynamicist.

I think they missed the boat not continuing the frame around the rear wheel for a longer distance like the the DA or P series bikes. I think test show a fairing over the wheel does help clean up air. There is a reason the P3 has been so successful with it's enclosed rear wheel design and why so many others have followed a similar path.


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PostPosted: Sat Jul 02, 2011 12:43 am 
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Posts: 655
Location: so. cal.
i think this bike is illegal under uci rules.


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PostPosted: Sat Jul 02, 2011 1:42 am 
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Posts: 425
roca rule wrote:
i think this bike is illegal under uci rules.

why?

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PostPosted: Sat Jul 02, 2011 2:00 am 
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Posts: 1298
Location: by Crystal Springs (Sawyer Creek Trail)
I'm an aero engineer, and I would go all in on the fact that this isn't really all that aero. Subjective, but pretty ugly as well


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PostPosted: Sat Jul 02, 2011 2:13 am 
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Location: Peak District
I'm liking the Ride BMC T in pic 1 :thumbup:

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PostPosted: Sat Jul 02, 2011 2:15 am 
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Location: Melbourne, Australia
justkeepedaling wrote:
I'm an aero engineer, and I would go all in on the fact that this isn't really all that aero. Subjective, but pretty ugly as well

I'm no aero engineer, but just by looking at the sharp corners on the seat stay/seat tube join, that will create vortices. (like the Specialized Transition)

According to BMC, the truncated aerofoil with "tripwire" is more aero than a standard aerofoil, but then again they would say that...

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PostPosted: Sat Jul 02, 2011 2:36 am 
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Joined: Fri Apr 22, 2011 11:53 pm
Posts: 44
I can see that working to an extent. On our Learjet's we have boundary layer energizers which create small disturbances in the boundary layer of air as it moves over them. By creating a small amount of turbulence (relative to the total volume of air moving past) in the boundary layer you can make the airflow stay attached longer. AIrplanes use them to delay portions of the wing stalling until a slower airspeed but the concept would work on aero bikes to reduce drag by keeping laminar (smooth) flow longer.

Having said all that, that is coming from a pilot and all engineers will tell you know pilots don't know squat. :lol:


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PostPosted: Sat Jul 02, 2011 3:43 am 
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Posts: 1298
Location: by Crystal Springs (Sawyer Creek Trail)
Yep :) It works on Learjets because the Reynold's number is so different that it is much more difficult to maintain laminar flow and preventing early separation. Nowadays, there are specific airfoils like the NLF-0215 or NLF-0416 with specific geometry to delay separation by having a thicker midsection than a complete teardrop. This works big time at over 100 mph. Not so much at bike speeds.


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