Scootin' through a downhill traffic signal yesterday, I discovered that the 14 th on my '65 Paramount had decided that skipping was easier than carrying torque. Not good, but gives a sense of how often this older rider uses that gear... So, tonight I decided to replace it from my stock of maybe a dozen scrounged Regina FW. Good news: The Suntour FW vise actually holds well. Clamp it on the biggest cog, in the shop vise, and whip out the whip for the bag cog and it does the job. More stable than wrasslin' two whips, even on a wheel.
Bad news: Somewhere, in pages long since turned to dust, maybe there is some grand strategy on why Regina wound up with so many different threadings for the outermost cog. It depends, I guess, on which body. How many cogs. Phase of the moon. Why did it take so long for the shift to splined cogs on a constant diameter? Cyclo-Pan more or less got it, but I guess just got swamped by the SunTour wave of innovation. http://www.sheldonbrown.com/freewheels.html.
By the way, what's the name of the Regina gold chain with the little drilled holes through the middle of each outer plate?