Secrets Of Speed | Shimano Time Trial Tech At Le Tour de France 2019

Ollie went to the Tour de France 2019 Grand Depart to find out how Shimano support the pro cycling teams that they sponsor in time trials.

In association with Shimano

Shimano sponsor 7 WorldTour teams and their equipment is used by many more. With their Di2 groupset providing a benchmark for reliability and performance, it's no surprise that Shimano have a few options available for their pro teams to use in a time trial.

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Leave us a comment below!

[jakementon]

Got to love the guy taking pictures in the background at 6:03 lmao

[sheilastallard]

Nice to see the pro bikes...trying to relate it all to my Brompton.

[kovar]

i just saw pictures of INEOS riders on Lightweight wheels before ttt today XD way to go Shimano.

[canibanoglu]

I've just had a huge bike crash and GCN videos are the only way for me to get my fix, thanks a lot!

[steveyankou]

Surprising amounts of scratches and dings on the bikes. Makes me feel better about myself.

[ChristopherForsyth]

Wow, crazy how that Pinarello turns into a Bianchi between 1:40 and 2:02 and then again at 5:44 and 11:01!

[kalbo]

Beginning to understand this bikes....they are so intricate. Thanks

[adccars]

I run a 53-39 and 11-32 . I live in the middle of the cassette . It works well with my cadence in the big gear.

[jackhammerk_]

"if you use smaller chainrings, it's less efficient" I guess you won't be saying this in the SRAM sponsored videos... 😂

[pascalbocherel]

As always, great job Ollie, nice to see Lapierre TT bikes on GCN, they produce very good MTB, road bikes and TT bikes.

[sgfisher]

Thomas: I'm running a 58t big ring.
Uran: Hold my beer...

[kamucho]

Really nice in-depth look at some of the finer details

[jochem]

Shimano: how many groupsets can you help us sell?
GCN: Yes.

JK, nice video guys 🙂

[uhlmwvn]

Shimano also supports its teams in TT by providing wheels that collapse

[Thracium]

very good explanation of some important details! Thank you! Good Luck!

[samuelhopely]

Seeing that brilliant sprint shifter hack on the FDJ bike makes me regret A. Spending $700 USD on integrated bars that can't accept aero bars and B. Opting for the 3 port junction box that was no less expensive than the five port because "shucks I just don't think I'll need the extra ports!" I freakin love Di2.

[TheMerckxProject]

Ollie, when you're back in the office, can you do a segment for GCNTech to better illustrate the friction savings of running a 58x15 straight line vs a requisite gear inches on a 53T or 54T that would be angled?

[ttbikefitdotcom]

Another reason to not have too much of a gap between chainrings is that the rear derailleur will not be able to handle the chain length difference (chain will be too loose on small ring/smaller cogs). Re: cassettes, Shimano also makes 12/25 and 12/28 (DA only for 12/28). These should be preferred for flatter courses as you get a 18T cog (on 12/25) or 16T cog (on 12/28) which you do not get with the more common 11/28 or 11/25. This gives the rider a smaller gear jump in the midrange so that he can more easily find the perfect gear on flatter terrain. This of course also assumes the 11T is not needed.

[Maxwaehrens]

9:34 yeah that's only available if you pay the some extra €200 for the Bluetooth and Ant+ junction receiver and transmitter and a new battery which works with the new junction box.
Thanks Shimano, as if the huge expense for the full di2 groupset wasn't already enough.

[jkk]

Bigger chainrings are not only more efficient. Gear selection is also better. If you shift from 12t to 11t the gear ratio difference is bigger than if you shift from 14t to 13t.