Thread: This is what the EAI Bareknuckle is made out of...
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Old 10-07-17 | 07:29 PM
  #5  
FBinNY
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From: New Rochelle, NY

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Originally Posted by Scrodzilla
... Seat tube has an OD of 30mm, just like most steel frames that take a 27.2mm seatpost.
Typo?

30.0 - 27.2 = 2.8 / 2 = 1.4mm wall. Pretty thick for a steel frame.

In any case most quality 27.2 ID steel seat tubes are 28.6mm OD (1-1/8") with a 0.7mm wall.

If it's aluminum, the likely OD would be 31.75mm (31.8)
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Last edited by FBinNY; 10-07-17 at 07:45 PM.
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