I'm doing the same thing, currently pondering gearing for my (far, far too large) Langster framed TT bike.
The TT that I am going to do is the Bexley 10, which goes uphill for 4 miles and then downhill for 6, so you need a gear that you can push up the hill that you then don't spin out coming down.
This is something of a challenge- FixedWheelNut was running 97 gear inches, which he pushed up a hill that had me shift to the inner ring.
I'm doing the same thing, currently pondering gearing for my (far, far too large) Langster framed TT bike.
The TT that I am going to do is the Bexley 10, which goes uphill for 4 miles and then downhill for 6, so you need a gear that you can push up the hill that you then don't spin out coming down.
This is something of a challenge- FixedWheelNut was running 97 gear inches, which he pushed up a hill that had me shift to the inner ring.