- Anything you would change that is blindingly obvious.
Aero TT setups is a hobby of mine...
No Lightweights in a TT. Best front would be a Zipp 808 FC, Hed 90, or Enve 80. Disc rear. He will easily save more than 20sec right there. Some good data here from Tour. http://www.tour-magazin.de/services/qtr ... page3.html
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Tires. The high TPI cotton casings with glued on tread are good for low rolling resistance but suck for aero... unfortunately. I think the issue is the shape and little lip where the tread meets the sidewall. Still for tubulars, I'd look at the Vittoria Crono... and also the Conti track tires... or the Podium if you are worried about flats. Frankly if I was going for a national championship and running tubulars I'd probably open up some Conti's and replace the tubes with a latex ones.
But... you don't need tubulars. Clinchers are just as fast in a TT... in which case the Conti Supersonics with latex tubes is the best.
Apparently skinsuits make a difference. I've heard from someone who does a lot of testing that the Castelli BP 2 tests consistently well. A new model is coming out that should be even better.
Helmets are highly individual. It needs to fit tight at the sides, and is probably best if it fills in the gap between the head and shoulders. I'd look a the LG P09 and Spec Macleran.
Tweaking position. You don't need a wind tunnel, but you *do* need a PM. If time is short though, I wouldn't worry about that.
That's the low hanging fruit. The BMC frame isn't the fastest BTW, but I'm guessing that would be difficult or impossible to swap for a Cervelo, Canyon, or Scott.
EDIT: Oh chainlube... Jason at FrictionFacts did a test recently and found good old waxing with molybdenum disulfide and teflon added to the mix was fastest. 2nd best was Rock n Roll gold. High teflon, non-cleaning lubes are best... and it's a few watts... shouldn't be ignored. He also sells DA chains that he has treated for a very reasonable price.
High quality ceramic derailleur pulley bearings are another easy one. Bearings all over the bike should be looked at. Very light grease, proper adjustment, etc.