Stuff you should know about bicycles.

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03-22-07 | 11:02 AM

#26

kemmer

*****es love tarck

Joined: Apr 2006

Posts: 3,301

Likes: 1

From: Sandy, UT

Bikes: so many

You're making it really hard for me to keep it real. I had to barely skim most of this thread.

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03-22-07 | 03:18 PM

#27

Nims

Square-o-dynamic

Joined: Mar 2006

Posts: 418

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From: www.toothpastefordinner.com

Bikes: something fixed, something broken

Quote:

Originally Posted by lbthomps

is there any place to get stress train curves of all the different types of tubes commonly used in bikes or even just a single graph that shows a few different materials all on one graph- ideally i am looking for a stress-strain curve plot of steel vs. aluminum vs carbon vs Ti

Unfortunately this doesn't exist for carbon or any composite of this nature, because the strees/strain information is directional, and is also going to vary greatly based on assembly/layout. Said information does exist for any alloy you're interested in, but I really don't see the point in having that information.

03-22-07 | 04:23 PM

#28

j-lie

Oh god it hurts!

Joined: Dec 2005

Posts: 221

Likes: 0

scandium is another frame material

03-22-07 | 05:44 PM

#29

endform

blacksheep the blemish

Joined: Nov 2004

Posts: 1,063

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From: Portland/Greendale

Bikes: 1973 Schwinn World Voyageur (manufactured by panasonic), Italvega Super Speciale (fixed, primary ride now), Kona 2004 JTS 10 spd

Quote:

Originally Posted by j-lie

scandium is another frame material

No it's not. A "scandium" frame is a really a "scandium butted aluminum" frame. It's added to aluminum alloys that would otherwise be impossible to weld. These alloys are lighter and stronger than a regular old 7005 aluminum alloy.

03-22-07 | 06:20 PM

#30

clancy98

don't be so angry

Joined: Sep 2004

Posts: 612

Likes: 0

you forget there IS a central place for all this info.

...Maybe you should post a thread on how to find this forum?

03-22-07 | 07:06 PM

#31

j-lie

Oh god it hurts!

Joined: Dec 2005

Posts: 221

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well then your discription of scandium should be added to the list cause scandium is listed as a material quite often on bike companies sites. it was my understanding that scandium was an aluminum alloy. so whatever; the tubes are treated(or have another element added to them) so that they can be welded whereas they would otherwise be unworkable. that makes them a different alloy and another frame material in my book.