What's the lightest aero bike/ frame

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wheelsONfire
Posts: 6283
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

BeeSeeBee wrote:I understood that he was talking about the ride quality as being plush as compared to him previously calling the Foil harsh. My point is that for frames where ride quality probably isn't a top engineering priority, people still wax poetic about the ride quality. And yet other people think the extra 500g that go into heavier frames that are known for their ride quality is necessary because of the meticulous layups, etc. Some people love the ride of Tarmacs, others find it too harsh. He says the Foil is a harsh ride, another person says it's not, there's not really any consensus. Basing this stuff on the perception of people (even reviewers, as another poster recommended) is just a poor way of teasing out any differences. Things like branding, tube shapes, sounds when you hit a bump, hearsay from other people, etc. all create expectations and form biases within us that make us.

I work in the sensory industry (food related), and we go through great lengths to blind things as best as possible because as soon as just a bit of information is given to our testers, they all of a sudden taste/smell/feel all the things that they "know" they should based on the brand/ingredients/etc. I absolutely believe we are subject to so many biases that if we don't control for them, experiences should be treated very tenuously.


As far as frames and ride quality.
I have been in contact with Guru, Argonaut, Parlee, Paduano racing, Legend bikes, Ax Lightness, Rolo bikes, Jure Berk (Berk Composites) to name a few!
Most claim that a frame with some more weight is more easy to tune for a less road feedback frame when we talk of feedback as vibrations that you may find fatiguing.
In terms of Foil, i took a great interest to further check it's tubings profiles and ask / search information on what the shapes of tubes aswell as layup had to or could have to do with a harsh ride.
Finally it was broke down for me what is the most resonable explanation.
Some say tubes shape and size have no or little effect, but i don't think so. I work only with metal being a former welder but not now.
So no carbon composite knowledge. But i very much "buy" the reasons i have been told/ learned from people actually working carbon with their own hands, designing layups every single day.
Further i have a contact riding Scott bikes and now from Foil to Addict SL, i have had this difference of ride feel very much confirmed. Bear in mind, Foil and Addict line carry same geometry.
Now, the Addict rides nicer than Foil. Ax Lightness inspite of it's very light weight is in it's core a frame that feels nimble and snappy, but it also offers a very nice ride feel.
This along with a stiff front end.
I don't suggest it is the opposite in the rear, i think it feels very balanced. If you would build to bikes with same wheels and tires, and carry over handlebar, stem and saddle you would feel this to. I don't suggest it is so vague you think it's a placebo effect. It is not! If you rely on reviews, well i think it seems you are like me a bit skeptic. But as is, Foil was extensively used by one mag and they also rode Look 695. 695 won hands down in direct compairson over Foil and many things came down to how the actual ride feel was.
Forget the wider tire and lower pressure as all and everything. Ofcourse it matters very much, but frames are different!
It just so happens that stiff all over has been a trend, perhaps not for some and Ax Lightness has a receipt that works if you like a good mix.
I don't say only Ax has, Look and Pinarello are well known for this to. A good dealer which has some brands could point you towards these frames, for instance Time is also well known for this.

It is wise to be a skeptic in this hobby, but at times there are actually differences that you really feel and appreciate.
Bikes:

Ax Lightness Vial EVO Race (2019.01.03)
Open *UP* (2016.04.14)
Paduano Racing Fidia (kind of shelved)


Ex bike; Vial EVO D, Vial EVO Ultra, Scott Foil, Paduano ti bike.

by Weenie


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XCProMD
Posts: 1125
Joined: Sat Jan 26, 2008 10:25 am
Location: Cantabria

by XCProMD

Material yield strength (tensile for carbon)-width of the panels/wall thickness-buckling and post critical behavior.

All that makes possible to make something very thin/light that deflects a LOT. Actually is the way mobile cranes are evolving in Europe: more reach and capacity for the same weight with thinner, high strength steel (up to Re=1300MPa). The limit is actually fatigue, but with CFRP fatigue is less of a limit than with plate steel, more so if there are holes and welds involved.

LitMerry
Posts: 3
Joined: Sun Dec 02, 2018 12:42 pm
Location: Tokyo, Japan

by LitMerry

The world lightest aero bike frame as of January 2019 is “YONEX Aeroflight” that hold 830g of the frame weight (frontfork 395g, seatpost 180g)-- designed /manufactured in Nigata, Japan.

http://www.yonex.co.jp/sp/roadbike/news ... 41700.html

Technology: Reduced 20% air-drag than Cabonex models, Multi-uniformed prepreg with CNT, carbon fiber and resin for the frontfork (“Namd” technology by NITTA Corp.)-- large tensile with a lightning return, “Vibslayer Carbon” on the toptube, seattube and seatstay, “Gummetal” on the downtube and seatstay, “OvalpPessedShaft” on the chainstay,

Prise (a seatpost included): 700,000- JP Yen + a local tax.

Review <https://cyclist.sanspo.com/437812> by a roadbike review writer (a former UCI Continental team rider): Very comfortable yet very fast, fun riding, excellent acceleration, enable easily holding a high speed cruising ride.

Other YONEX roadbike frames:
Cabonex: frame 650g (720g painted), bent fork 335g/straight 355g.
Cabonex HR: frame 745g (805g painted)

For enquiry:<inquiry@www.yonex.co.jp>

Hope this helps.

osw000
Posts: 87
Joined: Fri Jun 01, 2018 7:23 am
Location: Girona

by osw000

LitMerry wrote:
Sun Dec 02, 2018 12:52 pm
The world lightest aero bike frame as of January 2019 is...
We are still in Dec 2018. Something lighter might come out for Christmas.

Anyway Pinarello F10 X-light claimed weights seem already lower than those (760gr + 340gr)

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wheelsONfire
Posts: 6283
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

Do you say Pinarello F10 Lite is lighter than Yonex?
That's probably not happening...
Bikes:

Ax Lightness Vial EVO Race (2019.01.03)
Open *UP* (2016.04.14)
Paduano Racing Fidia (kind of shelved)


Ex bike; Vial EVO D, Vial EVO Ultra, Scott Foil, Paduano ti bike.

LitMerry
Posts: 3
Joined: Sun Dec 02, 2018 12:42 pm
Location: Tokyo, Japan

by LitMerry

Aeroflights will be available on Japan market in January 2019, The YONEX hosted/hosts Aeroflights demonstration to lend to people for a streets ride at two places in Japan in December 2018.

From a structural design engineering point of view, Pinarello F10 X-light seems not to be counted as so-called an aero road bike in the production history of frame builders

osw000
Posts: 87
Joined: Fri Jun 01, 2018 7:23 am
Location: Girona

by osw000


LitMerry wrote:Pinarello F10 X-light seems not to be counted as so-called an aero road bike in the production history of frame builders
Correct. I get it.

Enviado desde mi SM-J530F mediante Tapatalk


r3m
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Location: Aix en Provence

by r3m

Canyon aeroad ?!

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ryanw
in the industry
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Joined: Sat Apr 16, 2016 6:52 pm
Location: London

by ryanw

2016 Cervelo S5 - 56cm

Frame only - 1,055g
SL8 S-Works Project Black - 6.29kg
IG: RhinosWorkshop

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