Bill

Great report.    RBW had these FD's on the website on Fri, 5/20/22, and 
they looked ok to me.
  
They state a 48.8mm chainline.      This seems excessive if you are using a 
45mmm chainline road triple, like an XD-2.  The FD *may not* have inward 
swing to shift to the Inner chain ring. 

John Hawrylak
Woodstown NJ

On Monday, April 25, 2022 at 3:07:06 PM UTC-4 Bill Lindsay wrote:

> On the March 18th email update, Rivendell reported that the container full 
> of frames would also contain *1400 Front Derailers*.  They indicated this 
> model will work with all their bikes, but they didn't say exactly what it 
> is, giving it the nickname "skeleton key".  I wonder how much space 1,400 
> front derailers will take up.  
>
> For those who don't know what's special about "Rivendell Front Derailers", 
> it's a combination of a few things:
>
> 1. Rivendells typically have a bit more BB drop than most other bikes
> 2. Rivendell builds often have a small-sized "big" chainring.  Like a 42 
> big ring, or a 38, or a 34!
> 3. Rivendells typically have a more laid back Seat Tube Angle than most 
> other bikes
>
> the combination of those three things brings the trailing edge of the 
> front derailer down close to the chainstays.  So close, that in many cases 
> you flat out can't set up the front derailer "correctly".  You have to run 
> it floating way above the chainrings.  For a lot of people, this works just 
> fine, and some people actually brag about it.  When somebody claims that 
> Combination X is a problem, it's fun to retort "I have Combination X and 
> it's just fine!"  
>
> Anyhow, 650B bikes have less of this problem (because less BB drop).  
> Still, it's something to think about.  I prepared by stocking up on Shimano 
> CX70 Front Derailers when they existed, and now I'm super stingy with 
> those.  I'm going to give the "skeleton key" FD a look and may buy a few of 
> those also.  As an amateur machinist and maker, I've even dabbled with 
> making my own Front Derailers.  
>
> Or, you can avoid this altogether and run a 1xDrivetrain!
>
> Bill Lindsay
> El Cerrito, CA
>

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