wide forks are more aero...?

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Brucey
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wide forks are more aero...?

Post by Brucey »

Have you noticed? GB track squad are using forks that are about 4" wide near the crown!

They look like they came off an MTB, not a track iron!

Presumably testing has shown that fork blades that run close to disc wheels don't show a full aero benefit because they are running in the disturbed boundary layer of the wheel.

Weird looking though....

Shame VP and JV got DQd....

cheers
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[XAP]Bob
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Re: wide forks are more aero...?

Post by [XAP]Bob »

Spoiler in thread, not in title?
A shortcut has to be a challenge, otherwise it would just be the way. No situation is so dire that panic cannot make it worse.
There are two kinds of people in this world: those can extrapolate from incomplete data.
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cycleruk
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Re: wide forks are more aero...?

Post by cycleruk »

Yes, just watched Hoy get his 5th Gold and looked specifically at the forks.
Virtually parallel to the crown so is it aero dynamic or for strength?
A man can't have everything.
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Steveo2020
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Joined: 26 Apr 2012, 8:57pm

Re: wide forks are more aero...?

Post by Steveo2020 »

I think it is for aerodynamics. I remember reading that tri spoke wheels perform v well in wind tunnel until they are put in a fork, because there is an area of high pressure created. Also remember reading about cadel Evans using a fork with a hole in the blade, presumably to let this air "out" from between the forks. So this looks like a solution to the same issue.

On phone so can't send links but pretty sure the point about trispokes came from a debate between hed and zipp on the my velocity.com website

Seems to be working anyway!!

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uphillbothways
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Re: wide forks are more aero...?

Post by uphillbothways »

The wide-set forks are for stiffness. Team GB have two sets of forks, the wide sprint forks and a pursuit fork with a conventional low-clearance design.
Steveo2020
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Re: wide forks are more aero...?

Post by Steveo2020 »

The team pursuiters are using a wide fork too.

I assume the uk sport website is aimed at disinformation
Brucey
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Re: wide forks are more aero...?

Post by Brucey »

Steveo2020 wrote:The team pursuiters are using a wide fork too.

I assume the uk sport website is aimed at disinformation


that is what I wondered, too....

cheers
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[XAP]Bob
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Re: wide forks are more aero...?

Post by [XAP]Bob »

VP using narrow forks in the keiran.
A shortcut has to be a challenge, otherwise it would just be the way. No situation is so dire that panic cannot make it worse.
There are two kinds of people in this world: those can extrapolate from incomplete data.
Brucey
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Joined: 4 Jan 2012, 6:25pm

Re: wide forks are more aero...?

Post by Brucey »

[XAP]Bob wrote:VP using narrow forks in the keiran.


not slowing her down much, either... :shock: :shock: :shock:

:mrgreen: :mrgreen: :mrgreen:

cheers
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Ayesha
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Re: wide forks are more aero...?

Post by Ayesha »

Laminar flow.
LWaB
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Re: wide forks are more aero...?

Post by LWaB »

Airflow between 'fixed objects' (like fork blades) and spinning wheels is non-intuitive. Sometimes more clearance is less drag.
Steveo2020
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Re: wide forks are more aero...?

Post by Steveo2020 »

Forgot to look today - too excited!
SilverBadge
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Re: wide forks are more aero...?

Post by SilverBadge »

Steveo2020 wrote:Forgot to look today - too excited!
Pendleton used the wide forks with disc in the team sprint, the narrow forks with a 5spoke in the keirin, Clancy used the narrow forks with a disc in the omnium flying lap. I think they're playing mind games . . . .
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