[CR]lightest 70s cranks?

(Example: Production Builders:Teledyne)

From: "Charles Andrews" <chasds@mindspring.com>
To: <classicrendezvous@bikelist.org>
Date: Sat, 1 Dec 2007 17:15:05 -0800
Subject: [CR]lightest 70s cranks?

what was the lightest crank in the 1970s? If you were a weight-geek then, and you wanted to put the lightest possible double-chainring alloy crankset on your bike, which one would you use? I'm thinking a factory crank, not one milled and drilled aftermarket.

Thanks.

Charles Andrews
Los Angeles