[Topic Split] Does spinning = higher mph in the 1/4 - Page 4

rtusnake · 01-12-2007, 01:23 PM

Quote:

Originally Posted by TheJeanyus

Actually he has a Billetflow IRS brace and adjustable shocks. Without the BF brace, I'm sure he'd have blown the differential cover up the way he launches, and the adjustable shocks do a LOT against wheel hop.

I have the stock shocks on mine and mine doesn't hop at all with the slicks on. Believe it has to do more with the tires

Italian LX · 01-12-2007, 03:02 PM

Quote:

Originally Posted by coupe

But, there is no "magic" mph gain associated with tire-spin.

No, that's not what I'm saying.

I'll prove my point by throwing your statement back at you: There is no "magic" mph gained when you hook.

Looks like your the one trying to invent the perpetual motion machine.

Italian LX · 01-12-2007, 03:04 PM

Quote:

Originally Posted by Skillet

I ran the same MPH on a 2.1 60 as I did on a 1.70 60 with a 15" street tire the first time and a 28" slick the 2nd. 13.2@104 and 12.8@104.

That right there supports my theory.

coupe · 01-12-2007, 03:44 PM

There are other factors causing it...That's all I'm trying to say.

Wheelspin does not cause your mph to be higher in a run. Nope.

Mph is gained when you hook because you are accelerating at a greater rate than when your spinning. It's not magic.

It's physics.

Wickd GT · 01-12-2007, 05:19 PM

When you spin from you 60' to 330' mark, which are the most critical phase on a run, if it spins and the car stays straight, the tires have a motion on them, then when it hooks, you final et is going to be slow, but it would show a slight bit of mph, not in the effect on the hp, it shows that the car recover and put at the other half of the track its hp. Example: my 60ft time will be in a hooking track 1.55 blowing the tires(At FFW) and spinning through the 330' mark, my 1/8 mile shows a 6.40 at 112 mph and then run faster at the other end with a 9.95 at 137.90 mph at the other end the mph stays in between 138-139mph, but in the 1/8 it says that the et should of been slower, but the mph says the car was spinning. I don't mean that car gains mph in the 1/4 mile, but it would show a mph that makes raise your eye brows.

Edgar

Sorry I have not been around, but have been sick as a dog. Have not been ar work for a week, been in bed.

TheJeanyus · 01-12-2007, 06:05 PM

My car traps higher the harder it hooks. 2.1 or worse 60' is usually 115 mph, 2.0 is about 116 mph, Matt's 1.9 60' was 118 mph.

Italian LX · 01-12-2007, 10:38 PM

Quote:

Originally Posted by TheJeanyus

My car traps higher the harder it hooks. 2.1 or worse 60' is usually 115 mph, 2.0 is about 116 mph, Matt's 1.9 60' was 118 mph.

Not a very good comparison because none of those were all-out pedal-to-the-floor runs.

TheJeanyus · 01-12-2007, 11:33 PM

Quote:

Originally Posted by Italian LX

Not a very good comparison because none of those were all-out pedal-to-the-floor runs.

Are you saying that I lifted on all of those passes? At Steele my car spun all the way through 2nd without me letting off on multiple passes. I've run in the neighboorhood of 12.5 without lifting, 60' around 2.0, and trapped 116.

Or are you just trying to find a nice way to say I'm a shitty driver?

Greg03Cobra · 01-13-2007, 12:10 AM

Joseph i'm not doing the solid axle now. I'm building the shit out of the irs. After talkin with broke a few times & my mechanic i realized that the irs is the way to go. My question for everyone is back in november i saw a 03 cobra at steele that has the same mods at me. His 1st run was a 10.4 at 132 sideways with the backend almost on the wall the entire 1/4/ then he hooked real hard & didn't spin at all & ran a 10.3 at 132. He was on slicks & skinnies. I'm just tryign to learn as much as i can here so lets keep this goin.

TheJeanyus · 01-13-2007, 12:48 AM

I'm a firm believer in keeping the IRS - I just thought you'd mentioned a solid axle before. I didn't know you were planning to build the IRS up. My long-term goal (if I keep my car) is to have it in the 10's on IRS with full weight and all the creature comforts still in place.

01-12-2007, 03:44 PM	#34
coupe Super Moderator Join Date: Dec 2004 Posts: 6,313	There are other factors causing it...That's all I'm trying to say. Wheelspin does not cause your mph to be higher in a run. Nope. Mph is gained when you hook because you are accelerating at a greater rate than when your spinning. It's not magic. It's physics. __________________ " If you can't explain it simply, you don't understand it well enough. " - Albert Einstein

01-12-2007, 06:05 PM	#36
TheJeanyus Administrator Join Date: Dec 2004 Location: Huntsville, AL Posts: 14,774	My car traps higher the harder it hooks. 2.1 or worse 60' is usually 115 mph, 2.0 is about 116 mph, Matt's 1.9 60' was 118 mph. __________________ 1998 Mustang GT Coupe - World's Slowest Racecar 2005 Toyota 4Runner SR5 V8 2013 Volkswagen Jetta Sportwagen TDI

01-13-2007, 12:10 AM	#39
Greg03Cobra Senior Member Join Date: Nov 2005 Posts: 516	Joseph i'm not doing the solid axle now. I'm building the shit out of the irs. After talkin with broke a few times & my mechanic i realized that the irs is the way to go. My question for everyone is back in november i saw a 03 cobra at steele that has the same mods at me. His 1st run was a 10.4 at 132 sideways with the backend almost on the wall the entire 1/4/ then he hooked real hard & didn't spin at all & ran a 10.3 at 132. He was on slicks & skinnies. I'm just tryign to learn as much as i can here so lets keep this goin. __________________ 2003 SVT Cobra Torch Red : 952 of 8,394 640hp & 600trq :Sold 2007 Shelby GT : Sold 2004 SVT Cobra Oxford White : Sold Ricer import has become the Silver Submarine : Stolen & totaled Last edited by Greg03Cobra; 01-13-2007 at 12:13 AM.

01-13-2007, 12:48 AM	#40
TheJeanyus Administrator Join Date: Dec 2004 Location: Huntsville, AL Posts: 14,774	I'm a firm believer in keeping the IRS - I just thought you'd mentioned a solid axle before. I didn't know you were planning to build the IRS up. My long-term goal (if I keep my car) is to have it in the 10's on IRS with full weight and all the creature comforts still in place. __________________ 1998 Mustang GT Coupe - World's Slowest Racecar 2005 Toyota 4Runner SR5 V8 2013 Volkswagen Jetta Sportwagen TDI

01-12-2007, 05:19 PM	#35
Wickd GT Friends Join Date: Dec 2004 Posts: 1,645	When you spin from you 60' to 330' mark, which are the most critical phase on a run, if it spins and the car stays straight, the tires have a motion on them, then when it hooks, you final et is going to be slow, but it would show a slight bit of mph, not in the effect on the hp, it shows that the car recover and put at the other half of the track its hp. Example: my 60ft time will be in a hooking track 1.55 blowing the tires(At FFW) and spinning through the 330' mark, my 1/8 mile shows a 6.40 at 112 mph and then run faster at the other end with a 9.95 at 137.90 mph at the other end the mph stays in between 138-139mph, but in the 1/8 it says that the et should of been slower, but the mph says the car was spinning. I don't mean that car gains mph in the 1/4 mile, but it would show a mph that makes raise your eye brows. Edgar Sorry I have not been around, but have been sick as a dog. Have not been ar work for a week, been in bed.