smutchin
Cat 6 Racer
- Location
- The Red Enclave
Gap's getting smaller now... 45 seconds... 13km to go... oo-er...
The early season day races thread 2013 *SPOILERS*
- Thread starter Flying_Monkey
- Start date
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smutchin
Cat 6 Racer
- Location
- The Red Enclave
Don't think they're going to catch him now though. Too little, too late.
deptfordmarmoset
Full time tea drinker
- Location
- Armonmy Way
Probably a silly question but is the time gap measured as distance divided by average speed or the time gap between when the chaser reaches the same point? I'm just asking because, as the gap climbs back up to around a minute, the earlier lower difference seems to have more to do with the terrain than the ''real'' time gap
smutchin
Cat 6 Racer
- Location
- The Red Enclave
Nice of G to lead out Sagan for 2nd place. Looked like he pipped Oss to 3rd as well.
[Edit: No, Oss held on to 3rd, G was 4th.]
[Edit: No, Oss held on to 3rd, G was 4th.]
smutchin
Cat 6 Racer
- Location
- The Red Enclave
It's not a silly question - I've never been quite sure about this either, but I think it's measured at fixed points, eg a landmark by the side of the road.
OP
OP
Flying_Monkey
Recyclist
- Location
- Odawa
Well, Cancellara's back with a vengence! We are also really seeing the contenders for the rest of the classics coming to the fore now. Sagan, Thomas, Oss - all looked like business today. EBH flattered to deceive again, but I wouldn't count him out. Boonen is still easing his way back into things.
deptfordmarmoset
Full time tea drinker
- Location
- Armonmy Way
Thanks. The reason I wasn't sure was because the time gap seems to concertina too much for it to be measured at fixed points. It seems more in line with the concertinaing of distance when, say, the rider up front is climbing and the following rider is still on the flat. On the other hand, with GPS it would be easy to calculate the gap between riders at a given coordinate. So I'm still confused by the variations....
deptfordmarmoset
Full time tea drinker
- Location
- Armonmy Way
That would explain the concertinaing if A's climbing and B's rolling. A ''truer'' gap, I suppose, could only be measured once B has reached the same point as A did before.
thom
____
- Location
- The Borough
It has been a while since Cancellara has won like that - I'm glad to see his powers have not slipped away.
Regarding time gaps, I googled and found this excellent article. A summary:
For TV, it appears it is done by transponders on motos, so sometimes you see variations because the moto moves relative to the riders.
For race board purposes, there are timing bikes that will do things like stopping at fixed points with stop watches.
Bikes with gps won't help with timing as they receive a gps signal but don't have transponders (weighty) to transmit.
Regarding time gaps, I googled and found this excellent article. A summary:
For TV, it appears it is done by transponders on motos, so sometimes you see variations because the moto moves relative to the riders.
For race board purposes, there are timing bikes that will do things like stopping at fixed points with stop watches.
Bikes with gps won't help with timing as they receive a gps signal but don't have transponders (weighty) to transmit.
Get In The Van
Senior Member
- Location
- West Lothian
Cancellara looked very strong today, seemed to get a second wind as well, thought at one point Sagan and co were working well together and would reel him in, but alas C held on and by a big margin as well.
Good day on the telly box today with the ToC followed by this.
Good day on the telly box today with the ToC followed by this.
smutchin
Cat 6 Racer
- Location
- The Red Enclave
Mark Renshaw has tweeted that it's snowing in Ghent...
Strathlubnaig
Guru
- Location
- Alberta
Finally managed to watch the E3 out here, great race by Spartacus, back in the saddle right enough, good solo effort. Things look good for Sagan too, he is not the most experienced at these narrow roads where positioning can be crucial, which comes through knowledge, so look out for him to take some wins as he gets that experience. Flanders racing is great.
