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Sprinters(8 posts)

Oct 1, 2002 7:58 AM
What is a good Top end sprint for respective cats, without leadout.

Lion King 45mph?
Pro 42+?
1/2 ?
3 ?
4 ?
5 ?
re: SprintersLactate Junkie
Oct 1, 2002 8:18 AM
Too many variables to be able to put a set speed down.
re: Sprintersbrider
Oct 1, 2002 8:28 AM
I think the better question is how the sprint plays out. Speed alone won't win it.

One of the big differences I see is that sprinters will TRY to do it without a lead out in the 5s and 4s. 3s and up won't. That's a big influence on the top-end speed of the sprint.
re: SprintersDougSloan
Oct 1, 2002 9:44 AM
I don't think I've ever seen a true sprinter sprint without a lead out, including Cipo. So, it's hard to estimate how fast they would sprint without one. Not sure any of them could hit 45 mph solo.
re: SprintersRIAN
Oct 2, 2002 3:19 AM
Top track sprinters qualification times are between 42 and 43 mph for a flying 200m. Very few roadmen/sprinters would be able to match this.
re: SprintersVeloflash
Oct 3, 2002 11:14 AM
Track sprinters (even endurance riders) can top these speeds in training by jumping out from behind a derny/motor pacer doing those speeds plus.

Most of the sprint power is wasted in acceleration so a deliberate lead out will preserve this power to be concentrated in developing high end speed. That is why it is possible (plus wind & gradient factors) for road sprinters to achieve higher speeds.

The golden rule is to try not to accelerate in undisturbed air.
Oct 4, 2002 2:39 PM
There are too many variables in a RR to say roadies can't hit those speeds. I'm sure even Cipo would get chewed up on the track by world class trackies.

I've seen over 40 myself at the end of a sprint, but that was with a slight tailwind and I had a perfect leadout. The Pros at that race were hitting the high 40s at the line. Other races felt much faster and harder and I barely hit the low 30s at the line.

Totally agree with your golden rule.
re: Sprinters53T
Oct 16, 2002 7:36 AM
There are a lot of variables. Here is some data:
I'm a second-year Cat5, team sprinter, or #2 man at the crits.
On my sprint road on my block (flat, smooth, straight, 250m+, no traffic)(doesn't everyone have this at home?), I get 35 reliably, 37 on the good days. That's in a 53 x 15 or 14.
At a crit a few weeks ago, I won two primes and took 2nd in the pack finish (a break of 3 had gotten away) without going over 33mph.

I don't think the lead out changes the top speed, but that is what gets you to front, and you can't win without being at the front sometime. It also saves your energy so you can hold top speed for a few seconds longer. Many sprints in the lower cats are slowing down when they reach the line.

The power required to go from 33 to 36 out in the wind is considerable (???Watts) The power required to go from 36 to 45 (flat, calm) is probably beyond most pro cyclists.