Delta 7, a bicicleta quase transparente.

xman

Member
Mais uma marca, com um quadro muiro original, o IsoTruss...

"The IsoTruss® frame uses an open lattice carbon fiber structural design concept that was originally developed at BYU under the direction of Prof. David W. Jensen, Director of the Center for Advanced Structural Composites™. Center for Advanced Structural Composites™. Tyler Evans, who s pearheaded the project at the Center for Advanced Structural Composites™ at BYU, has been hired by Delta 7 Sports as Program Manager to develop the new frame which will go into production early next year. “The Arantix is an entirely new composite format that creates a whole new set of rules and possibilities in bicycle design; It’s lighter, stiffer, and less vulnerable to damage than other forms of carbon fiber,” said Tyler Evans."

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http://delta7sports.com/index.html

E um belo de um video com uma explicação.

http://link.brightcove.com/services/player/bcpid1185071583
 

Silvas

New Member
Bytes said:
Isso deve ser bom é para acumular lama... :shock:

Eles pensaram nisso e se reparares o tubo diagonal e as escoras inferiores têm uma espécie de protecção em plástico.

Pax_Eco said:
Parece renda!! :shock: :shock:

O mesmo tipo de renda utilizado nas plataformas das pontes de ferro, por exemplo. Parecem treliças.
Pelo menos de falta de originalidade e inovação eles não podem ser acusados :mrgreen:.
 

sinais

New Member
as 7 razões para comprar esta bike

1. Higher Performance Materials:Not all carbon fiber materials are created equal. The Arantix is made of high-grade aerospace carbon fiber that is more than twice as strong as carbon fibers that are commonly used in the sporting goods and recreation industries.

2. Most Efficient Structure: The open lattice design of the IsoTruss® leverages even greater efficiency from carbon fiber’s inherent strength by concentrating material at precise reinforcement intervals and then eliminating all other material everywhere else. IsoTruss® squeezes more strength per gram out of carbon fibers.

3. Lighter Structure: The IsoTruss® structure enables the Arantix to withstand all of the same high loads as other carbon fiber mountain bikes. The difference is that the Arantix can do it with fewer fibers.

4. Increased Stiffness: Standardized stiffness and deflection tests show that the IsoTruss® structure has characteristics similar to high grade aluminum alloys. The rigid truss geometry and large diameter format provide ultra responsive handling and efficient transfer of pedaling forces.

5. Superior Resilience: At first glance the IsoTruss® tubes in the Arantix frame may look fragile. The reality is that the redundant lattice structure is exactly what makes the Arantix frame even tougher in impact and crash scenarios than other continuous skin carbon bicycle frames. With traditional carbon fiber bike designs, damage from impact has the risk of propagating a crack around the entire surface of the frame tube. In a worst case scenario even if an impact were to damage an area of the IsoTruss®, a crack will rarely propagate beyond one single truss member. Furthermore, if a single truss member does fail in an extreme impact scenario, forces are still transmitted through as many as 23 other truss members in that region. The IsoTruss® will retain a much higher percentage of its structural integrity even if one or a few truss members have been damaged.

6. Ride-Optimization: The redundant lattice geometry of the IsoTruss® allows for a direction-specific design. For example, IsoTruss® frame members can be customized to have more fibers on the sides for increased lateral stiffness. Simultaneously, it can be constructed to have fewer fibers on the top and bottom, to allow for some degree of vertical compliance. The IsoTruss® format in the Arantix mountain bike frame opens up a whole world of ride-tuning possibilities.

7. Unparalleled: The Arantix is an extreme performance hand-crafted composite mountain bike frame produced in a limited production run. With its unique patented IsoTruss® technology, there is nothing else like it on the planet. The Arantix by Delta 7 Sports is the most advanced carbon fiber mountain bike frame in the world.


e fica o site sobre a tecnologia de fabrico do quadro http://www.isotruss.org/
 

Dadupe

New Member
Uma razão para não comprar:

Já pensaram em dias de lama, o que aquilo não deve agarrar??? Acabam o dia com mais 10kg só em Lama. E depois para limpar aquilo???
 

Pax

New Member
Mas é excelente para andar dentro de àgua! Ao menos não a acomula dentro dos tubos!

É cá uma corrente de ar... :mrgreen: :mrgreen:
 

Dadupe

New Member
Pax_Eco said:
Mas é excelente para andar dentro de àgua! Ao menos não a acomula dentro dos tubos!

É cá uma corrente de ar... :mrgreen: :mrgreen:

Outra razão para não comprar: Um gajo no fim da volta acaba constipado!! :mrgreen:
 

sinais

New Member
colocando um bocadinho de seriedade na matéria até porque quando inventaram a roda provavelmente no fórum lá do sítio diziam que aquilo servia para moer a azeitona ou o milho....

Alguém consegue sabe o peso desta bike? trará, comparativamente com outros quadros de carbono melhor estabilidade e absorverá melhor as irregularidades do terreno?
 

jonypaul

New Member
Para mim, para além de bom funcionamento acho que as bikes devem ser uma coisa: espetaculares em sentido estético ( por outras palavras, devem merecer bike pr0n :mrgreen: ), algo que escapa bastante a esta. Mas gostos são gostos...
 

mendes

New Member
não gosto muito do quadro, mas acho optimo estas invenções porque é assim que as coisas evoluem.
talvez daqui a uns anos só se use disto, entretanto as pessoas que têm muito dinheiro vão comprando isto e financiando a evolução que um dia vai permitir que toda a gente ande com esta tecnologia.

Por isso comprem disto que a tecnologia parece boa.
 

jginja

New Member
já tinha visto uma bike destas numa revista, mas já à muito tempo. na altura recordo-me que a legenda da foto não era a correct, pois falavam em "renda" com uma malha muito apertada e com resisa a proteger. seria a mesma coisa? não sei, mas era similar.
bike6.gif

bike3.gif

BikeMay2AB.jpg

isotruss1-iblv.jpg

http://www.cyclingnews.com/photos/2004/tech/shows/interbike/isotruss/isotruss2-iblv.jpg[img]
[img]http://www.cyclingnews.com/photos/2004/tech/shows/interbike/isotruss/isotruss3a-iblv.jpg
e um artigo da Interbike de Las Vegas de 2004:
Perhaps the most unique bicycle that Cyclingnews saw at Interbike was not even on display. We ran into Brigham Young University engineering student Tyler Evans outside the show with this unique mountain bike that uses IsoTruss open grid structure in composite instead of traditional round or shaped tubing.
"It is part of a student project at B.Y.U.", explained Evans, "and we wanted to make a useable mountain bike." This bike was created under Prof. David W. Jensen the Director of the Center for Advanced Structural Composites at Brigham Young University in Provo, Utah.
The tubes can be either open or sheathed
Developed at Brigham Young University, and usually used for structural components in meteorological, surveillance and Wi-Fi Towers, these B.Y.U. students modelled the IsoTruss grid structure as a closed, multi-cell box beam for this mountain bike in carbon fibre and Kevlar to demonstrate its application in other areas.
The longitudinal frame tubes in IsoTruss were designed to resist all axial and bending loads, while helical members like chain and seatstays support transverse shear and torsion loads. "We put a clear sheathing over some of the tubes to show how it can be protected", said Evans. "It's pretty dusty in Utah so the open IsoTruss works well but it could use protection in muddy conditions."

boas pedaladas
 

lumitoca

New Member
Eu sou completamente a favor da experiência e das coisas novas... até porque senão, andaríamos todos com aquelas rodas ENORMES à frente... :wink:

Mas que não é lá muito bonita, não é...
 
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