Help Sizing Square Taper BB Spindle Length?

[David Benson]

Originally Posted by andy.mgnr

Hey all - I'm building a 93' Ritchey Road Logic and snagged a set of these Ritchey Logic Compact cranks that I will use set up as a compact double (like in the attached example)...
I checked Sheldon Brown's BB Size database and found this crankset listed with a 110-113 spindle length, however should I go a bit slimmer since I am setting this up double and not triple? Thanks!

I have used Ritchey Sub Compact cranks on a Ritchey Breakaway and a couple of gravel bikes over the last ten years.
On my current gravel bike I am using a 98mm Phil Wood ISO bottom bracket, which results in chainline around 44-45mm and 143mm Q factor with a minimal offset to the left.
Prior to finding the 98mm Phil BB I used Phil and Campagnolo 102mm ISO bottom brackets. Either of these will be easier to find than 98mm.
With 42/29 rings, shifting to the big ring is acceptable but not excellent using either a Campagnolo 10 speed or IRD front derailler.
When I tried the same cranks with 48/32 a Campagnolo 10 speed derailler would not shift to the big ring out of the stand. Your mileage may vary with some other derailler.