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How much time is lost in a TT turnaround ?(10 posts)

How much time is lost in a TT turnaround ?MR_GRUMPY
Aug 7, 2003 8:47 AM
I know that most TT's are out and back, but not all of them are. In fact, I've done some that have two turnarounds.
I usually go in pretty fast, jam on the brakes, tip-toe around the cone, and try to accelerate out, the best that I can.
I was thinking that a turnaround might cost 10 sec, but am just guessing. Does anyone have any real idea ?
re: How much time is lost in a TT turnaround ?Jon Billheimer
Aug 7, 2003 10:28 AM
Probably about right. If you're me, always too much time!! Getting back up to speed is always a grunt:)-
I guess if you really want to analize it...biknben
Aug 7, 2003 11:08 AM
Does you computer have a lap function? I guess you could do this:
Hit your lap button as you hit the breaks to prepare for the turn. Then hit it again when you are back up to cruising speed.

Now you need 3 things. The distance covered during the turn lap, the average speed for the turn lap, and the avg. for the entire ride. Compare the time it would take to complete the distance for both average speeds to get the difference in time.

I'll use some easy numbers for an example:
The distance covered during the turn lap is 500 feet.
The avg. speed for the turn lap is 15 mph.
The avg. speed for the entire ride was 25 mph.

It takes 22.7 seconds to cover that distance at 15 mph.
It takes 13.6 seconds to cover that distance at 25 mph.

You lost 9.1 seconds during the turn.

I hope my math is correct because my brain is hurting.
Good idea.MR_GRUMPY
Aug 7, 2003 12:47 PM
My X-trainer plus will give me that info. The only problem is getting my brain to remember to "press button two times."
Doing a Time Trial is a little like the old movie "Altered States."
re: How much time is lost in a TT turnaround ?LC
Aug 7, 2003 12:17 PM
Not just time for the actual turn, but energy that haunts you a few min latter too. I am no TT expert, I notice that my slowest speeds and highest heart rates are a couple of minutes after the turn.
re: How much time is lost in a TT turnaround ?rogue_CT1
Aug 7, 2003 7:58 PM
If you do it like me and skid 30 feet past the cone then come to a stop before turning around and trying to get back up to speed you probably lose more than 30 seconds.
re: Some recommend easing off before the turn.Ping_Pong
Aug 8, 2003 6:17 AM
It is worth easing off very slightly before jamming the brakes on for the turn to allow a slight recovery ready for the acceleration out of the turn. The muscular tension during heavy braking does not allow any such recovery so you often find yourself in oxygen debt after coming out of the turn.

Of course this is a fine balance, I usually only ease off for a couple of seconds before braking, otherwise I feel a panic rising !
I hate narrow roads that you have to slow.....MR_GRUMPY
Aug 8, 2003 6:53 AM
down to two to three mph, just to make the turnaround. Even then, you get within a few inches of the edge of the road.
re: How much time is lost in a TT turnaround ?tdflance
Aug 8, 2003 7:34 AM
From my experience, the faster you try to go through it, the more time you lose.
re: How much time is lost in a TT turnaround ?Veloflash
Aug 10, 2003 12:11 PM
I wonder if the time gained by using high tech equipment (aero frames, skinsuits, aero helmets. etc) is lost totally or partially by TT riders not practising starts and turnarounds ad nauseum.