New Airfoil Rim - Full of Swarf

This is just a warning to anyone getting a new airfoil, got mine today
and so far I've manged to remove atleast 20 extremley sharp pieces of
metal from inside the rim, anyone of which could quite easily shred an
inner tube. I strongly reccomend you check every single spoke hole for
left over metal from the drilling of the rim and try and hook it out
with a pair of pliers, even if you don't cut your tyre or yourself on
it, it runs round inside the rim and makes a really annoying noise.

On a more positive note, loving the airfoil, I havn't put any tension
in the spokes yet and it's still stiffer than my old setup.


--
kington99

Dave

- what a thoroughly post-modern subversion of the cycling genre -
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Are the new airfoil rim as big as the old one because the last batch of
them was a bit smaller and could only fit the TA tire ?


--
kapoute

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No as far as I know mine is the smaller batch, it's certainly several mm
smaller than my steel coker rim. I'm really not bothered, there haven't
been any coker tyres in the UK for over a year I believe.


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kington99

Dave

- what a thoroughly post-modern subversion of the cycling genre -
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That's not unheard of for a new rim. Part of the procedure when
building a new wheel is to clean out shavings from the spoke holes.

What's bad is when you find a shaving inside the rim after the wheel
has been built. That means the wheel builder either didn't check for
metal shavings or happened to miss one.


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john_childs

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What does swarf mean?
It sounds a cool word!


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one wheely

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Complicated:
Swarf is the razor-sharp thin slices of metal that are produced during
any machining process. Since metal is so tough, when you machine it you
have to do it very gradually, effectively shaving the metal to the
required shape, producing lots of very small, very thin, very sharp
bits of metal.

Simple:
Wood shavings, but made of metal.

Loose.


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Loosemoose

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how do i tell if i have the smaller or the normal size airfoil rim?
thanks.


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Loosemoose wrote:
Simple:
Wood shavings, but made of metal.



Can you dumb it down a tad?

Mike


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Mikeswarbrick
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When you machine metal you end up with metal chips from the cuttings.
Those chips are also called 'swarf'
(http://en.wikipedia.org/wiki/Swarf).

Here's a 'video' (http://www.youtube.com/watch?v=Wk2VYwCIcZE) that
shows what metal chips look like from machining. Drilling the spoke
holes in a rim also produces swarf or metal chips. The chips are
sharp. Easily sharp enough to poke through rim tape and cause a tube
puncture. The swarf can get caught between the walls (hollow cavities)
inside the rim. The swarf can remain inside the rim after it has been
shipped to the bike shop or the wheel builder. The wheel builder needs
to check for swarf still in the rim. It is not unusual to find swarf
in the rim during the wheel build.


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john_childs

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I think Mike was joking, John


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rob.northcott

'Dartmoor Muni Weekend'
(http://www.unicyclist.com/forums/showthread.php?t=46116) - Last
weekend in May 2006
'Same again this year anyone?'
(http://www.unicyclist.com/forums/showthread.php?t=57785) It'll be
dry, I promise.
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