On a previous post I cited how the innovation in CX bikes by Bianchi from Italy was followed by Ridley from Belgium taking the approach to a next level.
When I posted about the TT bikes I forgot to mention also from where came the inspiration for this masterpiece
The only TT bike with a reverse/sloping top tube you say ?
not really
Bianchi started this trend all on the 70s
Looks very uncomfortable isn't it ?
Well it is all about getting the rider on the most aero efficient position possible and the low head tube helps to do so.
The same concept was applied during the late 80's on composite materials
this one won the world championships
This shape was made illegal by the UCI that requires that the bike has the diamond ( 2 triangles ) shape.
So it was back to that shape and the use of Alloys during the 90's that make them not that interesting,
like this prototype in Alu and with disk brakes ( tell me about who were the innovators ? Colnago comes to mind too but they deserve a full other post)
Until the new Bianchi D2 TT concept bike on the mid 2000's
This is an sculpted monocoque frame, that actually helps the air to flow smoothly around it, and still with a reverse sloping top tube.
Looks kinda weird, somewhat ugly, but it is indeed aero efficient, and uses the Oval concepts Jetstream fork, a fork that gives an proven aero advantage.
here another better pic, by Johnatan from turbocharged bikes, a fellow bike lover and hobby builder... he specializes on TT bikes
See now the Cervelo P3C this was the latest breakthrough on the TT bike design, they did a frame that molds around the rear wheel and is profiled on a very efficient aero shape. function over form, plain ( not ugly, not beautiful )
It became soon the reference and the approach was copied by almost all bike builders.
Ridley didn't just copied the P3C, what they did is to take the two most innovative approaches to the TT bike, that is, the Bianchi D2 concept and the Cervelo P3C and merged both into this masterpiece
This has the top tube and the air flow approach of the Bianchi ( actually they bought the license from Oval to be able to mold the fork to the bike and not just to have it as an addon ) and also incorporated the concept on the rear seat stays. and also has the profiled and smooth aproach of Cervelo. Additionaly the paint has an special surface that traps the air and this create an "air layer" over the paint, so you'll have the air going over a thin layer of air and not the bike surface itself, smoothing the air flow. A complete revolutionary concept that has been prooven effective on the wind tunnel.
Some detail pictures.
The seat tube is also molded in a way it helps the dirty air flow ( comes clean from the front but is messed up by your moving legs ) to go smooth through the clean rear wheel ( has to be a disk wheel ) and the seat stays with R-Flow.
Similar ideas even though not as advanced but indeed beautiful you can find on the Pinarello Montello
As you maybe have guessed by now, I love TT bikes, those are the equivalent of a Formula 1 Ferrari, not for your everyday commute, or for your leasure drive, but to enjoy on a special day.
I sold my own TT bike at the beginning of the season and now I have my heart set on one of these 2.
A TT bike p0rn post wouldn't be complete without mentioning briefly ( because they deserve a complete article about ) the Look time trial bikes.
I'll just post 2 of them ( thanks Jonathan )
the 486
and the 596
funny how they have names of microprocessors , they are all high tech.
French Look bikes go to my head, Italian Bianchis and Pinarellos go to my heart. and the Belgian Ridleys go to both.
what more can a man ask ?