View Single Post
  #10  
Old September 9th 03, 07:42 PM
Chris B.
external usenet poster
 
Posts: n/a
Default MA3 rim failure, where to now

On Tue, 09 Sep 2003 17:05:07 GMT, Simon Brooke
wrote:

"Just zis Guy, you know?" writes:

"Tim McNamara" wrote in message
...

A bicycle wheel does not support a
load by elongation of the spokes- exactly the opposite, in fact. The
wheel "stands" on the spokes between the hub and the ground, rather
than hanging from the top of the rim as your model would require.


Whoop! Whoop! Flamewar Alert!


Yeah, yeah, spotted it.

This must be why spokes have that significant shoulder for the rim to
sit on - otherwise when the wheel 'stood' on the spoke the nipple
would just slide into the rim tape. It also explains why spokes have
to be thicker in the middle than at the ends, as on cart wheels, so
they won't distort out of column under compression loads.

I'm always impressed by the levels of mathematics, physics and
engineering taught in US colleges. They're so, uhhhmmm, _differently_
educated over there.


They dun lurn dere fizziks fraam wheelbuilders, dat's fer darn shure!

--
Chris Bird
Ads
 

Home - Home - Home - Home - Home