At 6:09 PM -0400 4/22/08, Via Bicycle wrote:
>secret=oiler holes! plus they have the earlier hangers. but the oiler
>holes is the big deal.
Yes, oiler holes were used only one or two years after the brakes were introduced in 1952 - until they figured there was no need to oil the pivots. Also, the arm shape changed soon after the oiler holes were deleted. The earlier arms are more blocky and square in shape - see here for a good profile shot
(bottom of page, click on image for higher resolution).
140 Lakeside Ave #C
Seattle WA 98122