Thanks Phillip, I couldn't tell you the math, but they're about as vertical 
as a crank can get, with the square taper buried far to the outside 
Here's the reason I used SunTour FD1300 - figured how to attach the Simplex 
chainguard using a computer board standoff, and the Simplex hardware with 
one of the French M3s tapped to M5

<https://i.imgur.com/UpHze3w.jpg>

This *3x5 half-step plus granny 
<http://home.earthlink.net/~mike.sherman/shift.html?R0=26&R1=42&R2=47&C0=13&C1=16&C2=20&C3=24&C4=28&C5=999&C6=999&C7=999&C8=999&C9=999&C10=999&CAS=0&WI=7&CR=170&RT=1&ST=0&RPM=90&SRT=0&lRPM=80&hRMP=100&G=show&S=yes&TITLE=Lenton%20IRD%203%20x%205&HL=1>*
 
is the best drivetrain I ever designed.  


On Tuesday, February 12, 2019 at 11:13:01 AM UTC-6, Philip Williamson wrote:
>
> That's beautiful, Ron. 
> What's the Q on these cranks on your bikes? 
>
>
>

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