Sep Vanmarcke no likey Di2 @Roubaix
 

http://www.cyclingnews.com/news/vanm...ce-at-roubaix/

For the love of God why isn't there a reset button for pros?

Sicko mode and game over.

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Seemed like the gap was big enough for the team cars of the lead group to be up with them, surprised it took so long for the team car to work its way up to him.

I wonder what causes something like this? A friend of mine had some sand clog up his buttons on di2 . Is this common or is it a software thing?

RD wire could have shaken loose from the mech

My friend has di2 full road setup on his ibis Hakka and i have the same but with clutch Ultegra rear on mine. Neither of us are particularly easy on the bikes a d we’ve never had a problem. Must just be a gamble with jarring and movement from riding over such terrain. Add in a little dust and ...

Also the inherent risk of electronics I guess. Sad day for him though. Between that and Wout’s mechanicals/crashes two possible winners taken out.

Lots of connectors(like 10?) and altho they 'snap' into place really securely, I'm betting a connector came loose or a wire got cut...

There is a reset button in di2. Push and hold the button on the junction box for 5+ seconds while pedaling till it turns red and flashes. it will then run through a crash recovery mode. The derailleur will cycle through all the gears and re-connect the motor to the cage to restore shifting capabilities.

possibly:
At that point of the race, the field tends to be scattered out quite a bit, lots of small groups relatively close to each other. No idea in which position the team cars are allowed to sit. Also, possibly very difficult to pass these smaller and bigger groups with all the 90° bends and narrow carrefours. We saw how hard it was for drivers to pass single cars, its 2x harder the other way around due to the riders not expecting cars overtaking.

Seemed like he was trying that at one point. It was agonizing to watch.

DA mechanical is so good (relatively speaking ;)) - why gamble w Di2 on this of all days?

Guess it would send the wrong signal from a sponsorship perspective.

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Next year I was him I would go mechanic... Feel sorry for him... at least he is not crying Anyd Schleck style :P

Sure some riders picked mechanic just for this race. Contador was not fan of electronic at all...

During the race I saw him pressing the reset button, trying to get that to work. I think the real question here is, what happened that got the Di2 stuck in the 11? A wire shaking loose wouldn't do it (and those wires snap together very tightly) - I saw another interview with somebody else from the team who said that the derailleur was pretty smashed and barely functional. Seems like whatever was responsible for that would have done in a mechanical RD, too.

Probably right. I know they have wheels at the side of the road. I wonder if they'll consider (if it is allowed) whole bikes at the side of the road.

Yes, it was. Guy can't catch a break.

If not for his injury at E3, he's probably have been the captain at Flanders. He was super strong riding support, and again super strong at Roubaix, just had this problem with the gearing. Next year looks good for him, as they appear to have figured out his training build up for these races.

I hope he wins both races.

I'm just here to see what the Sram haters have to say.

Racing over cobble stones destroys things and always has.

more pertinently, Cancellara used mechanical for Flanders and Roubaix

I had the shifter paddle on my RHS Sram Red shifter snap during a race. Granted, local training race, and the big hitters would have dropped me eventually, but I was also far ahead of rest of the field (which still contained a few big hitters). Would have gotten a top 5 in a 1/2/3 race (by staying with the other cat-3s in the break), but had to watch the break sail up the road when my chain got dumped on the 11t...

Sagan too, after his Di2 came unplugged in 2015.

that is true.

Water or dust intrusion into the electronics... bad solder joint or trace on a circuit board that got hit just right, something breaking through a seal in a stepper motor... there are so many things that can go wrong.

No matter what anyone says about their personal experience Di2 is orders and orders of magnitude more complex than mechanical... when you have way more complexity you have way more things that can go wrong. It is a universal truth in engineering, then the issue becomes how do you control that. Electronic groups cost more.. how much of that is cause they put in ever more engineering to solve all the extra new failure cases.

Cables go bad from moisture/dirt/corrosion over time but they don't go bad instantly like electronics can.

If you have a foolproof, robust, reliable, simple system that worked for decades, tell people its old fashioned and make it new, more complicated, less reliable, and tell people they want it. Works every f*** time.

Gravel too...well, Type D groad anyway...

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"Crash recovery" -- are you referring to a software reboot in the event of a software crash, or are you talking about a bicycle crash with physical impact to the drivetrain?

Logically it's more likely that it's the former - hard to see how a reboot could fix actual physical damage to the derailleur mechanism - but I can't recall anyone ever mentioning that electronic shifters suffered from software crashes and the derailleur equivalent of BSOD.

Actually, it's the latter (physical crash):

https://www.artscyclery.com/road/ask...recovery-mode/

The situation totally sucks and maybe for the Roubaix a mechanical drive train is best.

However, I've been on the other side of this where if I had a mechanical set-up I wouldn't have been able to shift due to all the mud (other riders in the same race/ride experienced this). You can argue that I could have gotten off the bike and used a stick or something dislodge the mud but the salient point to me is that there are pros and cons to all gear and it really depends on the situation/preference with regard to what you choose.

What I don't get is when sponsors, riders, and/or teams try to make one solution be the solution. Examples that come to mind are 1x for road racing, apparently tubeless for the Roubaix, etc.

I've had a road derailleur jam from mud before too.. but I was able to get it working pretty quickly, quickly enough that he would not have had this result.

The whole Trek squad was on 1x too (with K-edge keepers).

Di2
 

Hmm? What was Phillip Gilbert riding?

I have DI2 on my gravel bike- Works great in extreme situations.

A lot of the Di2/EPS bikes will have the connectors taped and then heatshrinked together to stop them 'Popping' during races.

Slight drift, but a question that came up the other day:

Could one use electrical (or bulb) grease like on a car on the Di2 connections? I just wasn't sure of effectiveness, warranty, etc.

Ha ha—nice! :)


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Dielectric grease can also be applied to the parts of virtually any electrical connection that will be exposed to the elements to serve as a sealant that protects the connection from contamination and corrosion.

reasons aside, what a pity Sep couldn't exploit his potential. I like his style, and he's been due to win a big one for a while.

Sounds like the RD was damaged and there is no way to say that a mechanical RD would have faired any better. For perspective: I am a mechanical user all the way. No axe to grind against e shifting.

This race has utmost value toward the evolutionary improvement of a bike's comfort and reliability, that's for sure.

Put more of these kind of races on the calendar and production bikes can only benefit from it.

Maybe pay the riders extra.

I believe riders are only allowed to take spare bikes that come from one of the support cars. Bikes taken from someone at the side of the road are not permitted, afaik.

Cancellara used mechanical for everything on the road. He did use DI2 on his TT bikes from time to time, but never on the road bike.

Umm, nope:

http://autobus.cyclingnews.com/features/tdu02c40.shtml

"Anyone got a spare C40? Spectator saves Rogers' day
By Gerard Knapp In Adelaide

Adam Pyke came to the Jacob's Creek Tour Down Under to watch the cycling, but ended up saving the day for the new leader of the race on general classification.

Pyke, 29, was standing on the side of the road just half a kilometre into the climb up Mengler's Hill, when only 10 metres away, Michael Rogers came to a screeching halt after a tangle with a motorcycle had ripped his rear derailleur off the back of his bike and pushed it into his rear wheel. Cursing loudly, Rogers dismounted and looked down at his bike to assess the damage and realised he wasn't going any further on that machine, so he threw the blue, Mapei team-issue Colnago C40 onto the ground in disgust.

"So Michael's taken one look at my bike and he's taken off," Pyke said. In an uncanny coincidence, Pyke is the proud owner of a 56cm centre-to-top Colnago C40, which uses the latest Shimano SPD-R pedals. Oddly enough, it was the same size as Rogers' bike - "or close enough" - and also uses the same type of pedals (see picture)."

you are partially correct; racers cannot take bikes/wheels from spectators, but this rule is not always enforced, as it would generate really bad publicity

top of my head, I recall another rider taking a bike at a more recent edition of Tour down Under; also, someone took a wheel at Tour of California a while back (think it was Julich)

What about that german one hour record holder that ended a stage at the tour in a bike that belong to a junior rider?

Freddy Maertens was famously disqualified from the 1977 Tour of Flanders for taking a bike after the Koppenberg from the side of the road and not from a team car as his fellow breakaway riders did. He was notified of his dq while the race was unfolding and refused to stop. He towed Roger de Vlaeminck to the line, with RDV not taking a single pull in the final 70 km, before sprinting around Maertens to cross the line first.

The Tour Down Under was almost an exibition race at the time when the Rogers switch happened and the Commissars turned a blind eye to help the show and the sport in Australia, imo.

I watched the P-R replay yesterday and there was a point where he was alongside the Mavic car, I guess asking for a bike. He didn’t get one I guess they either didn’t have his size or his pedals. He changed bikes from team car with something like 7-8 km left when it was clear Gilbert or Politt would win the race.

Tough day for the EF support crew; hung two of their riders out to dry.