Originally Posted by
RobbieTunes
Good brother.
Makes up for using his toothbrush to clean your chain rings, and all the other stuff you did....
55cm for the 54cm model
56cm for the 56cm model
Probably would be, not many 5'11" people ride a 54cm.
Appears to be a plan.
Spaghetti Legs is that height and rides a 56cm.
Yes.
Really? 
Hmm.
Helping your brother is helping you. No problem.
Methinks two stems are in order here, and building with long enough cables to go with a stem change after you ride.
So, to make it simple, I have a 56cm Turbo. I can make it yours.
You build it for you, ride it, modify it for your brother and leave it.
Or take 2 bikes.
We'd forgive you not riding an Ironman because, well, it's
a Turbo.
A short stem for you and a longer one for your brother?
You could go quill and re-do one side of the bars to swap, or a quill adapter and just swap modern stems.
It's not the TT length I am worried about. I think that can be worked out. I have a Zoom adjustable stem I could use. Or I could put one of those threadless headsets on like on the IM up thread. The issue would be if a 56 ST is to short. Anyway, we have time. Here's the good news if it happens. They have some acreage in the country. We can probably have a big a$$ shindig at their house instead of settling on a restaurant. They like to host.
