At 06:24 AM 2/11/2000 -0800, you wrote:
>When he says steel he's probably refering to a billet crank, which means
>it's not a casting method. They tahe a big block of forged steel and then
>cut the crank out ot it. Supposed to be mondo strong and lighter than
>forged. Of course the price tag of $1000+ reflects that as well.
>Joe W.
You've got three types of cranks. Cast, forged (traditional and non-twist)
and billet. Cast is where molten steel alloy is poured into a mold, then
machined and heat treated. Forged steel is a steel stock that is shaped
into a crank in a forging machine, then machined and heat treated. Billet
is made from solid stock and is machined by a CNC machine. This is the
strongest crank available. Metal grain is kept true and is not twisted or
compressed in any way.
Mike
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