What is the most radical frame to date?

Discuss light weight issues concerning road bikes & parts.
DamonRinard
in the industry
Posts: 335
Joined: Fri Apr 29, 2011 8:32 pm
Location: Connecticut, USA

by DamonRinard

Good idea, I hadn't thought of that.

Crossed spoke lengths are quite sensitive to skipping holes; radial spokes are less sensitive.

On your 32 hole hub, crossing the 8 left spokes might be easier to calculate, given the even spacing. Then radial on the right side. You'd want a stout shell to transfer the torque. Right side heads in or out? I guess it depends on the flange location, to clear the RD. Might be interesting whether heads in would clear - it might, given many (not all) hub flanges must also work with a spoke protector...
Damon Rinard
Engineering Manager, Road Bikes
Cycling Sports Group, Cannondale
Ex-Kestrel, ex-Velomax, ex-Trek, ex-Cervelo

Berzin1
Posts: 17
Joined: Wed Jul 20, 2016 9:35 pm

by Berzin1

How about this frame? Was it ever available to the general public?

Image

by Weenie


mag
Posts: 172
Joined: Thu Mar 16, 2017 12:23 pm

by mag

Not much radical, but De Rosa trying something funny with their new Metamorphosis http://www.derosanews.com/en/2018/06/27/metamorphosis/
Image

wingguy
Posts: 4130
Joined: Thu Mar 08, 2012 11:43 pm

by wingguy

I don't think retro really counts as radical. I quite like it, but it's just a normal two triangle frame with an art deco/streamline/1950s sci-fi inspired top tube.

Theologian
Posts: 38
Joined: Sat Jun 23, 2018 3:34 am

by Theologian

Well, I was going to say some iterations of beam bike frame, then I found this:
Image
Image

It's art, literally.

uraz
Posts: 86
Joined: Thu Dec 12, 2013 9:48 pm

by uraz

Image

Theologian
Posts: 38
Joined: Sat Jun 23, 2018 3:34 am

by Theologian

That is awesome, but the cross wind must be a nightmare :lol:

DamonRinard
in the industry
Posts: 335
Joined: Fri Apr 29, 2011 8:32 pm
Location: Connecticut, USA

by DamonRinard

Yes it is awesome, but I notice it looks like a track bike.
Maybe only ride it on indoor velodromes?
Damon Rinard
Engineering Manager, Road Bikes
Cycling Sports Group, Cannondale
Ex-Kestrel, ex-Velomax, ex-Trek, ex-Cervelo

C36
Posts: 293
Joined: Fri Mar 03, 2017 3:24 am

by C36

DamonRinard wrote:Yes it is awesome, but I notice it looks like a track bike.
Maybe only ride it on indoor velodromes?
Curious if the fully enclosed rear wheel doesn’t have a negative effect linked to the air trapped around the wheel. On race cars the turbulences in the wheel arches are a serious problem the engineers try to overcome for decades.


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Dan512
Posts: 32
Joined: Tue Sep 16, 2014 9:13 pm

by Dan512

What about this?

DDR (Eastern Germany) time trial champion 1988.
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Dan512
Posts: 32
Joined: Tue Sep 16, 2014 9:13 pm

by Dan512

Or this, no clue if there is an english name. We call them « Steher ». It’s a type of track race behing a motorbike.

The speeds they ride at are incredible (just check out the gearing)
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C36
Posts: 293
Joined: Fri Mar 03, 2017 3:24 am

by C36

Dan512 wrote:Or this, no clue if there is an english name. We call them « Steher ». It’s a type of track race behing a motorbike.

The speeds they ride at are incredible (just check out the gearing)
Indeed, the geometry is absolutely extreme to be as close as possible from the derny then use the aspiration as much as possible, explains the small wheel, the fork geometry and the weird reinforcement to support a position such much “in front”


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Dan512
Posts: 32
Joined: Tue Sep 16, 2014 9:13 pm

by Dan512

C36 wrote:
Tue Jul 03, 2018 10:01 pm
Dan512 wrote:Or this, no clue if there is an english name. We call them « Steher ». It’s a type of track race behing a motorbike.

The speeds they ride at are incredible (just check out the gearing)
Indeed, the geometry is absolutely extreme to be as close as possible from the derny then use the aspiration as much as possible, explains the small wheel, the fork geometry and the weird reinforcement to support a position such much “in front”


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I just googled it. Speeds above 100 km/h. The races can last up to 24 hours. CRAZYYYYYYY :shock:

mattr
Posts: 3688
Joined: Fri May 25, 2007 6:43 pm
Location: The Grim North.

by mattr

Dan512 wrote:
Tue Jul 03, 2018 9:52 pm
Or this, no clue if there is an english name. We call them « Steher ». It’s a type of track race behing a motorbike.
Stayers is the english term. One of them anyway.

by Weenie


wingguy
Posts: 4130
Joined: Thu Mar 08, 2012 11:43 pm

by wingguy

Good lord that looks absolutely terrifying. Much respect! :shock:

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