hooking = better mph...
hooking = better mph... I believe this to be 100% true do to the fact that you are shortening the track when spinning and dead hooking will get you a better mph...however, i can't get ANYONE to believe me...can anyone explain it better than I can?
thanks
thanks
I've seen cars trap 114 w/ drag radials and then switch to slicks and run two tenths faster and two mph slower. I know where your coming from but that does seem to be how it goes.
Originally Posted by SStolen
I've seen cars trap 114 w/ drag radials and then switch to slicks and run two tenths faster and two mph slower. I know where your coming from but that does seem to be how it goes.
The loss in mph is due to tire growth, not the hook.
Originally Posted by Damillio
How does the EVO and WRX get their good times? Traction. Who is gunna win between two stock T/A's - One with a crappy start or one with a perfect launch.
ehh?? The thread is about traction vs MPH, not who can hook better.I always thought that more traction would = MPH increase. But the outcome is different.
I mean.. How do you gain more MPH when you are spinning? It is weird. But more traction does tend to lower you MPH for some reason.
Last edited by Keenov; Aug 9, 2004 at 11:54 AM.
Trending Topics
Originally Posted by scott ws6
it seems that the less hook the more mph because when the tires spin you gain momentum even though your 60ft was bad and your et will be slower.
What if you spun through the whole 1/4, would you have a better MPH than actually hooking up from the get go?
I was thinking that, since the tires are spinning and the motor is revving higher, when you finally get traction the car takes off faster. Which increases MPH but lowers ET, since you were spinning
If you can even understand what I just wrote... lol!!
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Originally Posted by scott ws6
it seems that the less hook the more mph because when the tires spin you gain momentum even though your 60ft was bad and your et will be slower.
Everytime I put on a DOT tire compared to street tires I gain 2-4mph and 8tenths to 1 second. everytime
Originally Posted by Chris ARE 385
I find it the total opposite. It depends on gearing though.
Everytime I put on a DOT tire compared to street tires I gain 2-4mph and 8tenths to 1 second. everytime
Everytime I put on a DOT tire compared to street tires I gain 2-4mph and 8tenths to 1 second. everytime
.
Originally Posted by Chris ARE 385
I find it the total opposite. It depends on gearing though.
Everytime I put on a DOT tire compared to street tires I gain 2-4mph and 8tenths to 1 second. everytime
Everytime I put on a DOT tire compared to street tires I gain 2-4mph and 8tenths to 1 second. everytime
I would say you are right. Cause I am sure I will be gaining atleast 2 or more MPH. I spin at the top of first and all of second (even when lifting) and I get a little sideways in third. I am sure some stickier tires would straighten that out and improve my MPH/ET. If not, I am pissed
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
Sometimes, M6 folks see a little better MPH when they spin a little as it lessens or eliminates the "bog" off the line. However, this is bandaiding the problem. If you're geared right and launch at a high enough RPM, there will be no bog even if you hook.
For auto guys it's a little simpler. You don't have a bog (well, unless you're using a stock or too tight TQ converter) so tire spin only serves to shorten the track. All else being equal (meaning that your haven't changed the tire size or weight), auto cars will normally see better trap speeds when hooking.
For auto guys it's a little simpler. You don't have a bog (well, unless you're using a stock or too tight TQ converter) so tire spin only serves to shorten the track. All else being equal (meaning that your haven't changed the tire size or weight), auto cars will normally see better trap speeds when hooking.
If you switch from street tires to slicks....basically, the slicks will dead hook in most cases, which means that over the same time interval, you are now farther down the track (and hence, the better ET). Since you are farther down the track this essentially "shortens" the track...think of it as the available room you have to get to XXX mph, which is why the trap speed will be slightly lower.
STF Veteran
Joined: Oct 2003
Posts: 3,486
Likes: 0
From: Greensboro, North Carolina
The way I understand it is: The reason some people see higher trap speeds when they spin in a M6 car it puts their rpm's closer to the power band. I imagine it as having the same affect (basically) as a torque converter slipping and bringing the engine into the power band. Obviously if you just light the tires up you aren't going to run faster. But, if you hover on the edge of traction spinning slightly faster than you are going then it can increase your mph a little. Your ET will be worse but your trap can increase a little. This seems to be less acurate with the more horsepower that a car has. Someone like Chris ARE 385 isn't going to see any mph improvement by spinning because his car has enough horsepower to push right through a bogg. Where as my car will pick up, maybe, 1-3 mph if I spin a little. I hope this made sense.
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
"If you switch from street tires to slicks....basically, the slicks will dead hook in most cases, which means that over the same time interval, you are now farther down the track (and hence, the better ET). Since you are farther down the track this essentially "shortens" the track...think of it as the available room you have to get to XXX mph, which is why the trap speed will be slightly lower."
You should rethink this logic. Yes, when you hook you are farther down the track at a given time interval but how did you get there? You accelerated quicker which means that you are at a higher MPH at any given point on the track. When you spin you're wasting track while not picking up MPH very quickly. This leaves you with a shorter track ahead of you once you do finally hook. You are also at a lower MPH at that point on the track than what you would have been if you'd been accelerating during that distance rather than spinning.
I hope that made sense.
You should rethink this logic. Yes, when you hook you are farther down the track at a given time interval but how did you get there? You accelerated quicker which means that you are at a higher MPH at any given point on the track. When you spin you're wasting track while not picking up MPH very quickly. This leaves you with a shorter track ahead of you once you do finally hook. You are also at a lower MPH at that point on the track than what you would have been if you'd been accelerating during that distance rather than spinning.
I hope that made sense.
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
P.S. The reason MPH often suffers with slicks as compared to street tires is multi-fold.
1. They are almost always taller than the street tire they replace which takes away mechanical advantage. This is no different than using a numerically lower rearend ratio.
2. They are almost always heavier and since they are also taller, this weight travels are longer arch...farther away from the center of rotation.
3. Slicks have larger AND stickier contact patches. This means more rolling resistance.
4. Slicks have softer rubber and more flexible sidewalls. Any flex (that is motion) that takes place is wasted energy. Also, more energy is converted into heat due to this flexing and rolling resistance rather than being used to accelerate that car.
1. They are almost always taller than the street tire they replace which takes away mechanical advantage. This is no different than using a numerically lower rearend ratio.
2. They are almost always heavier and since they are also taller, this weight travels are longer arch...farther away from the center of rotation.
3. Slicks have larger AND stickier contact patches. This means more rolling resistance.
4. Slicks have softer rubber and more flexible sidewalls. Any flex (that is motion) that takes place is wasted energy. Also, more energy is converted into heat due to this flexing and rolling resistance rather than being used to accelerate that car.
STF Veteran
Joined: Oct 2003
Posts: 3,486
Likes: 0
From: Greensboro, North Carolina
Originally Posted by Colonel
P.S. The reason MPH often suffers with slicks as compared to street tires is multi-fold.
1. They are almost always taller than the street tire they replace which takes away mechanical advantage. This is no different than using a numerically lower rearend ratio.
2. They are almost always heavier and since they are also taller, this weight travels are longer arch...farther away from the center of rotation.
3. Slicks have larger AND stickier contact patches. This means more rolling resistance.
4. Slicks have softer rubber and more flexible sidewalls. Any flex (that is motion) that takes place is wasted energy. Also, more energy is converted into heat due to this flexing and rolling resistance rather than being used to accelerate that car.
1. They are almost always taller than the street tire they replace which takes away mechanical advantage. This is no different than using a numerically lower rearend ratio.
2. They are almost always heavier and since they are also taller, this weight travels are longer arch...farther away from the center of rotation.
3. Slicks have larger AND stickier contact patches. This means more rolling resistance.
4. Slicks have softer rubber and more flexible sidewalls. Any flex (that is motion) that takes place is wasted energy. Also, more energy is converted into heat due to this flexing and rolling resistance rather than being used to accelerate that car.
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
When I spoke of spinning in the case of an M6? I was speaking of small to moderate spin. Not enough that your RPMs would go above your HP peak or cause you to lift in any way. For autos, less is better.