Originally Posted by jgedwa
Did anyone ever address the heart of my original question: does a long spindle substantially increase flex at the BB?
I would seriously doubt that an inch longer spindle creates any substantial extra flex to the BB. Look upon it as a leverage arm against the BB - an inch extra is probably going to add just a small fraction of pressure to the BB shell.
I would not rule out, however, that a long spindle is under considerable more stress then a short one. That I am quite certain of.
-Kurt