Re: [CR] Thickness of Flanges ???

(Example: Component Manufacturers:Chater-Lea)

In-Reply-To: <W1832625518229121264618805@webmail44>
References:
Date: Wed, 27 Jan 2010 17:20:22 -0500
From: "Ken Freeman" <kenfreeman096@gmail.com>
To: Scott Edrington <scott@edrington.net>
Cc: Amir Avitzur <walawalaoxenfree@gmail.com>, classicrendezvous@bikelist.org
Subject: Re: [CR] Thickness of Flanges ???


If you're duplicating an existing hub, then Scott is dead on. If you're trying to engineer a new hub, it also depends on knowing the tension the spokes will be under, both in static and loaded conditions. I think Jobst has given equations for that, in his book. Given knowing those forces, one could design the flanges for adequate strength and stability over time.

On Wed, Jan 27, 2010 at 2:00 PM, Scott Edrington <scott@edrington.net>wrote:
> Amir,
>
> It depends on the type of material you are using to machine flanges.
>
> The easy answer is take the hub you are trying to copy to a machine shop
> that can test for material hardness and then duplicate the hub exactly;
> otherwise, find an engineering student who can make you a solid/finite
> element model.
>
> Regards,
>
> Scott Edrington
> San Diego CA
>
>
>
> -----Original Message-----
> From: Amir Avitzur [mailto:walawalaoxenfree@gmail.com]
> Sent: Wednesday, January 27, 2010 06:20 AM
> To: classicrendezvous@bikelist.org
> Subject: [CR] Thickness of Flanges ???
>
> Anybody know what is the maximum and minumum acceptable width of aluminum
> hub flanges (near the spokes)? Any studies done, to find out what hole size,
> hole shape, flange thickness, etc. is best for a 3 cross wheel? Amir Avitzur
> R"G Israel ->| |<--------- Dimension needed ___ | | \__| spoke / ¯ | | | | |
> | | | | / \ / \_____ | __________| Axle, cones, & ball bearings ___________
> | | _______________________________________________ Classicrendezvous
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--
Ken Freeman
Ann Arbor, MI USA