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Olympic MTB Race

Whether it's cross country, marathon or gravity, post all your MTB chat here.

Moderator: Red Rick

21 Aug 2016 19:32

Just caught up with the replay. Annoying how the coverage missed key moments like Schuster pulling away from Kulhavy and Coloma from Marotte. Also disappointed that Sagan was torpedoed by the flat. Wanted to see if he could be competitive. Shame they don't have technical support elsewhere on the course. The Israeli guy was another badly affected.
Andy262
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Re: Re:

21 Aug 2016 19:37

mr61% wrote:
meat puppet wrote:Dunno how much the flat, riding on it for five-ish minutes plus the mechanic changing the wheel cost, exactly. But I think three min initially. No idea how the gap has developed since.

I think that's the key thing. Riding with a flat for several minutes will have taken a hell of a lot out of him. Sagan was looking great until his first puncture. Some people were saying before the race he wouldn't even be able to move up from last through the field to get anyway near challenging the leaders. He managed to do it in the space of a few corners! No question for me he would have medalled.

They really need to look at how they address punctures/mechanical etc. Having just one zone on the lap where a wheel can be replaced just isn't good enough. I'm sure for a lot of people Sagan's puncture ruined the race as a spectacle.
Couldn't Sagan have just carried or walked the bike to the "mechanic's zone", or whatever you fine MTBers call it? (I have to agree that riding on a flat will do absolute hell to a rim no matter the type of bike you ride.)

Didn't ruin the rest of the race for me either way, and at any rate.
User avatar Tricycle Rider
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Re: Re:

21 Aug 2016 20:15

Tricycle Rider wrote:Couldn't Sagan have just carried or walked the bike to the "mechanic's zone", or whatever you fine MTBers call it? (I have to agree that riding on a flat will do absolute hell to a rim no matter the type of bike you ride.)

Didn't ruin the rest of the race for me either way, and at any rate.


He was kilometers away from the zone (I think they call it the "tech zone"?) when he flatted. He did what he could. They swapped out his front wheel when he got there, but was minuted down at that point.

He started in last place, and was in the front three by the first climb. Real shame, I wanted to see him rock it. He didn't quash any questions about the overall talent pool of the XC MTB field vs the roadies with that start, that's for sure. The questions will remain.

Good race though, that's a great point. I am glad to see the Izu course for 2020 looks a bit more scenic than the burned-out, shantytown hillside we saw this week.

http://www.city.izu.shizuoka.jp.e.jj.hp.transer.com/form1.php?pid=6109
User avatar red_flanders
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Re: Re:

21 Aug 2016 21:43

red_flanders wrote:
Good race though, that's a great point. I am glad to see the Izu course for 2020 looks a bit more scenic than the burned-out, shantytown hillside we saw this week.

http://www.city.izu.shizuoka.jp.e.jj.hp.transer.com/form1.php?pid=6109
Hon, you are presuming most of us will still be alive by then, correct?
User avatar Tricycle Rider
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21 Aug 2016 23:20

Great race, despite producer missing a couple of key moments (especially the moment Coloma made his decisive move).

Now I know what to do with some logs and rocks I gathered for years in my backyard.

Great performances from Coloma + Villegas (Colombians everywhere :D ).
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Re: Re:

21 Aug 2016 23:47

Tricycle Rider wrote:
red_flanders wrote:
Good race though, that's a great point. I am glad to see the Izu course for 2020 looks a bit more scenic than the burned-out, shantytown hillside we saw this week.

http://www.city.izu.shizuoka.jp.e.jj.hp.transer.com/form1.php?pid=6109
Hon, you are presuming most of us will still be alive by then, correct?


I am. Do you know something I don't?
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22 Aug 2016 09:16

Well that course was absolute garbage. Not as bad as London but still.

Shame about Sagan, the flat may have been his fault as he was obviously lacking technical skills but flats are part of racing MTB. I'm unsurprised about the start, he's obviously very strong and would have planned to follow a wheel of one of the top guys as it's much easier to follow through features than it is to pick your own line. He was struggling with the technical aspects whenever he was slightly down on Fontana and Schurter and he seemed to have the most problems in corners leading to either sharp climbs or technical downs, he couldn't maintain the rhythm. Very hard to say what he would have done but I think top 5 was a possibility, especially on that course.


The best thing to come out of the racing was Nino getting the gold, massively deserved and I'm very glad he did it.
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User avatar King Boonen
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22 Aug 2016 14:08

Two flats usually means poor tire choice, poor skills, or both.

As to having more pits, don't get me started...
jmdirt
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Re:

22 Aug 2016 15:37

jmdirt wrote:Two flats usually means poor tire choice, poor skills, or both.

As to having more pits, don't get me started...


Usually yes, and I seem to remember flats in at least one of the warm up races?
Vincenzo Nibali:
"I know how to ride a bike"

Reduce your carbon footprint, ride steel.
User avatar King Boonen
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Re:

23 Aug 2016 21:05

jmdirt wrote:Two flats usually means poor tire choice, poor skills, or both.

As to having more pits, don't get me started...
Wouldn't that just defeat the whole purpose of MTBing? I mean... never mind.

I'll defer to you guys' opinion, seeing as I know absolutely squat about MTBing.

EDIT: by "pits" you mean pit stops, like in car racing? (Sorry, I just don't know your language. :( )
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25 Aug 2016 17:41

Nobody here to answer my genuine questions?

I guess this means I'm not cool enough for the MTB crowd. (Don't think I'm cool enough for the roadies either, so I'll just take my bikes and be all cool with myself.)
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25 Aug 2016 18:12

Yeah pits are like pit stops.

I don't think it would really, say over a 6.5km.circuit having two pits, one at the start/finish straight and one in the middle would help the riders considerably. If you get a flat at the start of the circuit then you have to race 6km at 20 an hour which ends up taking like 20 minutes, and with a flat that really takes it out of you. On the technical sections it just becomes almost impossible. Then sometimes you run with the bike, which also makes it harder... Imagine running with a 10kg bike for 10 minutes over rocks :D becomes pretty tiring. I imagine the riders would be pretty up for it, and as a fan I see no reason why not - you'd still lose time with a flat so maybe bad technique is still punished but not by so much your race is over

To your last bit: Mtb guys and gals are among the most laidback and chill people I know, and are usually really friendly. As long as you're willing to rip it up down on the rocks and through the dirt then they let you be part of the crew ;) even if you're bad (like me quite often) then they're still nice to you and let you ride with them, and wait at the bottom a minute or two. Roadies can be slightly more uptight imo. Mtbers are like snowboarders. :D
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Re:

25 Aug 2016 18:53

Brullnux wrote:Yeah pits are like pit stops.

I don't think it would really, say over a 6.5km.circuit having two pits, one at the start/finish straight and one in the middle would help the riders considerably. If you get a flat at the start of the circuit then you have to race 6km at 20 an hour which ends up taking like 20 minutes, and with a flat that really takes it out of you. On the technical sections it just becomes almost impossible. Then sometimes you run with the bike, which also makes it harder... Imagine running with a 10kg bike for 10 minutes over rocks :D becomes pretty tiring. I imagine the riders would be pretty up for it, and as a fan I see no reason why not - you'd still lose time with a flat so maybe bad technique is still punished but not by so much your race is over

To your last bit: Mtb guys and gals are among the most laidback and chill people I know, and are usually really friendly. As long as you're willing to rip it up down on the rocks and through the dirt then they let you be part of the crew ;) even if you're bad (like me quite often) then they're still nice to you and let you ride with them, and wait at the bottom a minute or two. Roadies can be slightly more uptight imo. Mtbers are like snowboarders. :D
Thank you for answering my questions, that was very cool of you. :cool:

If you ever have any kind of a mechanical along the road/mountain in my area I'll be sure to help you out as much as I can!
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25 Aug 2016 20:19

I'd have to get to the US first! Then sure, thanks
Brullnux
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Re: Re:

27 Aug 2016 18:26

Tricycle Rider wrote:
jmdirt wrote:Two flats usually means poor tire choice, poor skills, or both.

As to having more pits, don't get me started...
Wouldn't that just defeat the whole purpose of MTBing? I mean... never mind.

I'll defer to you guys' opinion, seeing as I know absolutely squat about MTBing.

EDIT: by "pits" you mean pit stops, like in car racing? (Sorry, I just don't know your language. :( )

I am opposed to pits. I think that it was a bad decision by the UCI to add them a few years back.
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27 Aug 2016 20:21

I wonder if any company ever tried to invent a run-flat tire.
avanti
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Re:

28 Aug 2016 19:09

avanti wrote:I wonder if any company ever tried to invent a run-flat tire.

There are a few out there but none light enough for XC. There are some really good ones for off road motorcycle use in "your going to get a flat for sure" areas and long 250, 500, 100 miles races.

Tubeless with sealant (Stan's etc) are tough to flat if you use the correct tire for the trail/your riding style, and the correct pressure.
jmdirt
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Re: Re:

28 Aug 2016 21:15

jmdirt wrote:
avanti wrote:I wonder if any company ever tried to invent a run-flat tire.

There are a few out there but none light enough for XC. There are some really good ones for off road motorcycle use in "your going to get a flat for sure" areas and long 250, 500, 100 miles races.

Tubeless with sealant (Stan's etc) are tough to flat if you use the correct tire for the trail/your riding style, and the correct pressure.


Oh wow, I would have assumed they were all running tubeless and he burp flatted or tore a sidewall. They run tubes? I can't believe that. What's the thinking there? I would have thought tubeless was a bit lighter and far more reliable...as it is for all of us out on the trail...
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Re: Re:

31 Aug 2016 12:49

red_flanders wrote:
jmdirt wrote:
avanti wrote:I wonder if any company ever tried to invent a run-flat tire.

There are a few out there but none light enough for XC. There are some really good ones for off road motorcycle use in "your going to get a flat for sure" areas and long 250, 500, 100 miles races.

Tubeless with sealant (Stan's etc) are tough to flat if you use the correct tire for the trail/your riding style, and the correct pressure.


Oh wow, I would have assumed they were all running tubeless and he burp flatted or tore a sidewall. They run tubes? I can't believe that. What's the thinking there? I would have thought tubeless was a bit lighter and far more reliable...as it is for all of us out on the trail...

I was implying that he used the wrong tire. Burp flats were an issue years ago, but rim and bead design have eliminated that problem unless you run way too low psi/bar.
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Re: Re:

02 Sep 2016 17:29

jmdirt wrote:
red_flanders wrote:
jmdirt wrote:
avanti wrote:I wonder if any company ever tried to invent a run-flat tire.

There are a few out there but none light enough for XC. There are some really good ones for off road motorcycle use in "your going to get a flat for sure" areas and long 250, 500, 100 miles races.

Tubeless with sealant (Stan's etc) are tough to flat if you use the correct tire for the trail/your riding style, and the correct pressure.


Oh wow, I would have assumed they were all running tubeless and he burp flatted or tore a sidewall. They run tubes? I can't believe that. What's the thinking there? I would have thought tubeless was a bit lighter and far more reliable...as it is for all of us out on the trail...

I was implying that he used the wrong tire. Burp flats were an issue years ago, but rim and bead design have eliminated that problem unless you run way too low psi/bar.


Gotcha, thanks. I wonder about the number of flats we saw if they're running tubeless. Blown sidewalls maybe?
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