I would think that with the prevalence of STI/Ergo/Rapidfire/Gripshifters 
and their lack of a lockout, it will be a significant liability when one 
attempts to upshift to a larger gear while pushing super hard and 
got...nothing but a freewheeling crank with its associated crash.

Bishop Bikes made a rando bike with an integrated portacatena:

http://www.flickr.com/photos/bishopbikes/sets/72157628089348263/

I saw that in person at NAHBS-2012 and it was pure sex on wheels.



On Sunday, January 13, 2013 8:07:49 PM UTC-8, Patrick Moore wrote:
>
> http://campagnolo.wikispaces.com/Portacatena (Scroll down a bit.)
>
> And of course Eric knows about it: 
> http://campyonlyguy.blogspot.com/2010/08/today-history-lesson-portacatena.html
>
> That's a really neat device, too -- wonder why it never became more 
> popular. Much better to have a chainrest and easy wheel removal instead of 
> another blanking cog. I wonder if I can jury rig something on the Ram I am 
> building up. I am using (for the moment) seven speed freewheel wheels while 
> the Ram has (I've been told) 132.5 OL spacing. 
>
> -- 
>
> -------------------------
> Patrick Moore, Albuquerque, NM, USA
> For professional resumes, contact Patrick Moore, ACRW
> http://resumespecialties.com/index.html
> -------------------------
>

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