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onsight512
11-09-2011, 09:57 AM
What's the difference/purpose between a high-flange and a low-flange hub? If it matters I'm specifically asking about track hubs.

thanks,
Chris
ergott
11-09-2011, 10:34 AM
High flange hubs like Phil Wood's will slightly increase the bracing angle of the spokes and will make for laterally stiffer wheels.

You have to compare flange widths to get the whole picture. You can make a low flange hub stiffer than a high flange hub if they aren't designed well.
Mark McM
11-09-2011, 01:09 PM
What's the difference/purpose between a high-flange and a low-flange hub? If it matters I'm specifically asking about track hubs.


It was originally thought that high flange hubs made for more torsionally rigid wheels, and that low flange hubs made for wheels with more vertical compliance. Hence, wheels for track racing were made with high flanges, because races were short (and therefore comfort was not a concern) and sprints had high maximal torques; and wheels for road racing were made with low flanges, because races were long (and often on rough roads) and maximal torques were usually lower than for track racing.

It has since been learned that flange diameter has minimal affect on either torsionally or vertical stiffness, and high flange hubs have only been kept around on track hubs for tradition rather than function (although many track wheels now use low flange hubs).
Ti Designs
11-09-2011, 01:17 PM
No math??? If you're going to talk torsional strength, talk about the angle of the spoke at the hub, or the COS(the angle at the hub) as well as the radius of the spoke holes from the center.


Really, I could care less about the math. Large flange hubs come in larger boxes...
sg8357
11-09-2011, 01:36 PM
High flange hubs are cooler looking.

Airlite, the Phil Wood of 1940s Britain.
fiamme red
11-09-2011, 01:38 PM
High flange hubs are cooler looking.

Airlite, the Phil Wood of 1940s Britain.Another advantage: you could slice bacon with these Harden hubs.

http://www.velobase.com/ViewComponent.aspx?ID=aa86b3f2-547e-40d9-9acf-facf5c798eb5&Enum=110
rustychisel
11-09-2011, 05:06 PM
it was so trackies could tell their road wheels from their track wheels without having to ask coach.... :beer:
rice rocket
11-09-2011, 08:28 PM
Somewhat related, what's w/ wheels that have a high flange hub on the NDS, and low flange on the drive side?
kc0yef
11-09-2011, 08:30 PM
I have been riding at 235 to 260lbs the high flange on a 27 inch wheel has been my mainstay they are stiffer and transfer more power combine that with 36 spokes or 40 and well I have a better riding experience.
combine that with a 700c or 650 and again more strength...

Go ride your bike...
11.4
11-09-2011, 09:59 PM
it was so trackies could tell their road wheels from their track wheels without having to ask coach.... :beer:

Hisssssssssssssss.

You'll get yours in the afterlife.
Mark McM
11-10-2011, 10:03 AM
Somewhat related, what's w/ wheels that have a high flange hub on the NDS, and low flange on the drive side?

The size of each flange is often related to space constraints around the flanges for that particular hub design. For example, on some disc brake hubs, the disc rotor bolts onto the side of the NDS flange, and the spoke holes have to be at a larger diameter than rotor bolt holes, so the NDS flange ends up being larger than the DS flange. On other hubs, the freehub pawl mechanism is located inside the DS flange, and due to the space requirements of the pawl mechanism the DS flange ends up being larger than the NDS flange.

And then there is the case of Phil Wood rear hubs. In an attempt to use the same length spokes on both sides of a dished rear wheel (to reduce the number of spare spokes that have to be carried while touring), the NDS flange is a few millimeters larger than the DS flange.
ergott
11-10-2011, 10:19 AM
snipped

Okay, smarty-pants. Try to explain this;-)

http://cdn3.media.cyclingnews.futurecdn.net/2010/03/09/2/rolf_rear_hub_600.jpg

:beer:
Mark McM
11-10-2011, 10:51 AM
Okay, smarty-pants. Try to explain this;-)

http://cdn3.media.cyclingnews.futurecdn.net/2010/03/09/2/rolf_rear_hub_600.jpg

:beer:

Because this design was already taken?

http://gallery.roadbikereview.com/data/roadbike/500/medium/78849IMG_1725.jpg
ergott
11-10-2011, 11:20 AM
Too-shay.
Chance
11-10-2011, 02:10 PM
High flange hubs are cooler looking.

Airlite, the Phil Wood of 1940s Britain.
That fork is something else.