For those of you who are running 11's or better, does wheel spin cause your mph to be lower? I would assume that if you are hooking then you are increasing your speed quicker therefore giving you more "room" to increase your speed as appose to just spinning down the track. Any positive feedback is appreciated.

 

You will probably yield your highest mph if you dont hook as well.

 

He's correct. Wheelspin almost always has higher traps. My highest traps have been 115mph on a 12.3 run and with the same boost, slicks, track, ect. I ran 11.8 at 112mph. Only difference was the 60ft (1.8 vs. 1.6).

 

I agree. Spinning = higher traps. Also lower 60ft's = lower traps

both around 1.8 60ft's

12.0 @ 140mph spinning (24.5 slicks)

11.0 @ 132mph still spinning but not as much (26 slicks)

 

I'm not too sure that this theory holds true. There are many factors that influence MPH but I wont generalize that no traction = fast mph. Anyone else wanna chime in .

 

Yes ... Mph rises with loss of traction!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluebird &raquo;</TD></TR><TR><TD CLASS="quote">Yes ... Mph rises with loss of traction!! </TD></TR></TABLE>

BS.

 

Thats not why .What happens is the softer your tires are the slower you go.There
is different compounds for that reason. You can get a wide,short, hard tire.And it might mph better than a thin,tall, soft tire.Its all the right combo.Just like every
other thing on your car.The right combo.

 

What is the theory behind that?

 

alot of factors do influence mph AND et but alot of tire spin does = high mph no matter what, atleast as far as i have ever seen. ams mike put it as simple as it gets ive never in 5+ years of racing/ long time watching races seen anything different, if you spin the **** out of your tires then your mph will be high.

 

Am I really responding to this.Think about it.If your spinning your tires how can you be going faster than if your hooked up and accelorating.Have you ever seen two top fuel cars with in car camaras pointing at each other.And one smokes the tires.It looks like he threw out an anchor. The car that hooked goes 330 and the one that smoked em goes 150. Now how can that be faster?

I must really be bored

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RMF &raquo;</TD></TR><TR><TD CLASS="quote">Am I really responding to this.Think about it.If your spinning your tires how can you be going faster than if your hooked up and accelorating.Have you ever seen two top fuel cars with in car camaras pointing at each other.And one smokes the tires.It looks like he threw out an anchor. The car that hooked goes 330 and the one that smoked em goes 150. Now how can that be faster?

I must really be bored</TD></TR></TABLE>
lol
i agree with this point 100%....
however when i was at the track, my gaining of traction while messing with tire pressure yielded lower traps with lower tire pressure and higher traps with higher tire pressure...
and my science and experience tells me its the amount of drag and resistance on the movement of the vehicle causing the lower trap speed...
if your spinning your usually alittle high on tire pressure, causing less resistance and less drag resulting in higher traps...
mild wheel spin is not like smoking a dragster at the 1000ft mark.
but i agree with your logic.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RMF &raquo;</TD></TR><TR><TD CLASS="quote">Thats not why .What happens is the softer your tires are the slower you go.There
is different compounds for that reason. You can get a wide,short, hard tire.And it might mph better than a thin,tall, soft tire.Its all the right combo.Just like every
other thing on your car.The right combo.</TD></TR></TABLE>


Nope...a taller tire will trap higher speeds as it adds gear to a car.
Loseing traction will sometimes let you trap a higher speed. The reason is the car actually accelerates quicker because it has no traction.

 

i can prove this theory on plenty of time slips. as weird as it sounds it seems to be true. trust me 7 yrs worth of runs under my belt. Im pretty sure i can dig up almost every scenerio you can think of on my slips

 

spinning down low will put you further into your powerband...you'll finish the 1/4 deeper into 4th, etc than you would if you hooked, thus more mph.

 

AMS MIKE

In your case, it wasn't traction, it was gearing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ninesecrx &raquo;</TD></TR><TR><TD CLASS="quote">

The reason is the car actually accelerates quicker because it has no traction.</TD></TR></TABLE>

This statement is funny.

I don't understand it myself but from what I have seen and experienced my traps went up as my wheel spin increased. I guess that explains why some people go 10's with a 120ish mph and some can only get there with a 140+ mph. This theory would show that the 120ish mph driver is utilizing their power to the fullest potential while the 140+ mph driver is having a really tough time hooking up. This theory could also be used to dispute all of those fucktards that say "Your mph doesn't match your claimed HP levels blah blah blah" anytime someone posts up a track pass backed by a dyno sheet.

 

I asked because my mph didn't match what I assumed to be at 500whp. It was around 98+ and I spund 1,2,+ 3rd gear. I expected to be in the 100mph range. Its in a 2600lb car with driver. I guess car is just too heavy.


I mean 98mph in an 1/8 mi. We don't have a 1/4 around here. Sorry for the confusion.


Modified by SuperTeg95 at 5:47 PM 11/14/2004

 

see I think MPH is a good indication of HP and traction. if someone is pulling a 10 sec pass @140mph and another is pulling a 10sec pass @120mph for example. Im thinking that the 140mph user has more hp which in turn is causing alot of traction probs. In turn if the traction was increased they would be actually utilizing their power. So in short the person with the lower traps is running less Hp but is able to utilize it and make it work.

I dunno maybe im looking into it too far. lol.I can just go by my experiences. My traps were always high as hell, but no traction at all.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SuperTeg95 &raquo;</TD></TR><TR><TD CLASS="quote">I asked because my mph didn't match what I assumed to be at 500whp. It was around 98+ and I spund 1,2,+ 3rd gear. I expected to be in the 100mph range. Its in a 2600lb car with driver. I guess car is just too heavy.
</TD></TR></TABLE>500whp and your mph was around 98?

 

yea right? my car was about 2700 with me in it and i was trapping 125 on radials on 350whp.

 

holy cow! your mph is kinda low. i made 178hp and was doing 99mph... also, i believe the "high traps=no traction" theory...

 

Heres my take on the subject. Lets forget about traction for a second. Just think of your engine accelerating in terms of rpm's over time. Assuming power stays the same, the amount of time it takes for the engine to accelerate from 1k rpm-9k rpm should always be the same. The more traction you have the quicker you go down the track. (less time to accelerate.) The less traction you have the slower you go down the track. (more time to accelerate.)

Obviously you need traction to gain mph. Which is why spinning will really only gain mph for you if you spin in the first 100' of the track. The first 100' barely effect's your mph but hugely effect's your ET.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jerseykid609 &raquo;</TD></TR><TR><TD CLASS="quote">


that's the best explanation u can have </TD></TR></TABLE>

I agree.

 

I think the reason that your traps are higher when you spin off the line more is because spinning the tires INCREASES your total E.T., and that means you will be accelerating over a longer time span for the rest of the track distance (more time to gain more MPH).