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 Post subject: Measuring for Mechs
PostPosted: Wed Nov 22, 2006 2:45 pm 
North Wales Deputy AEC
North Wales Deputy AEC
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Joined: Sun Apr 30, 2006 12:50 am
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Bought some sexy vernier calipers to measure various bits of bicycle tubing and am now unsure about how I find the measurement for a front mech - is it the internal (post) size or the external tube diameter?

:?

Neil


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 Post subject:
PostPosted: Wed Nov 22, 2006 2:56 pm 
East Midlands AEC
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I assumed it was external tube diameter - but I may be wrong!


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 Post subject:
PostPosted: Wed Nov 22, 2006 3:05 pm 
BoTM Winner
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external


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 Post subject:
PostPosted: Wed Nov 22, 2006 3:05 pm 
Retro Guru
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Surely it must be external? Internal wouldn't take wall thickness into account... :?


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 Post subject: Doh!
PostPosted: Wed Nov 22, 2006 3:07 pm 
North Wales Deputy AEC
North Wales Deputy AEC
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Now I feel all stoopid!

:oops:


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 Post subject:
PostPosted: Wed Nov 22, 2006 3:09 pm 
Retro Guru

Joined: Sun May 14, 2006 5:38 pm
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Location: Sussex
External - but be sure to measure in the mech mounting area.


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 Post subject:
PostPosted: Wed Nov 22, 2006 3:12 pm 
Retro Guru
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:D
if you have a mech on it, the older ones have the measurment (28.6 31.8 34.9) on the inside of the clamp. The later ones have them (if I'm not mistaken on the outside.


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 Post subject:
PostPosted: Wed Nov 22, 2006 4:34 pm 
East Midlands AEC
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or just measure the outer diameter and see if it is a measurement you would recognise (i.e one of the standard sizes) :wink:


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 Post subject:
PostPosted: Wed Nov 22, 2006 6:55 pm 
Gold Trader / MacRetro rider
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remember that size may vary .1-.2 or so.
mike


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 Post subject: Statistics
PostPosted: Thu Nov 23, 2006 4:34 pm 
North Wales Deputy AEC
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The measurement for the FSR Front Mech is 32.2 - does that sound right?

Neil


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