Framebuilders - What do these terms mean?
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03-30-09, 07:52 AM
I've recently gotten into biking more seriously, and with that I've realized that I don't know what the hell certain words or terms mean.
For example, when I read about a frame, I see words like butted, double-butted, offset horizontal drop out, forgedeleived
and so on.
Please help me out, and post what these mean and any other things that have to do with frames.
03-30-09, 07:56 PM
Welcome! When I was new to cycling I just cruised around the internet and slowly learned the meaning of all the terms.
Butting generally refers to the way variable wall thicknesses are made into a frame to to achieve lower weight while maintaining strength. Double butting refers two having to different wall thicknesses, usually thicker at the ends than in the center.
Horizontal dropouts have a slot for the axle that is horizontal and often long enough to allow ease of chain tensioning.
It consists of uniform heating of a structure to a suitable temperature below the transformation range, holding at this temperature for a predetermined period of time, followed by uniform cooling.
From http://www.ayzar.com/english/estabilizado.html :
Forge relieving is applied to relieve stresses that remain locked in a structure as a consequence of a manufacturing sequence, welding, cutting, smelting, initial mechanized or forge.
This treatment supplies to pieces a great dimensional stability previously to the application of:
other heat treatments
The control system of these equipments enable us to process the pieces at any range of temperature.
03-31-09, 12:02 PM
Lots of framebuilders bits are named (http://www.framebuilding.com/)here.
There is a good bike glossary here (http://www.sheldonbrown.com/glossary.html)
03-31-09, 08:13 PM
Thanks a lot, both of you. The internet glossaries helped a ton.
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