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Author Topic:   Roll Out Times?
steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 01-01-2002 06:57 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Need some guesses of roll out times for the '66. Assuming it'll do 1.6X 60'ers with the auto launching off a trans brake. Leaf spring/traction bar & 10" slicks. Will it be possible to "go red" off a .500 light with the 351w running low 12s. ?

We want to set up the "Eliminator 2000" practice tree as close as possible to how the car will perform. It's normal settings are .320 rollout and you have to wait about .1 sec after the last yellow or you'll go red. I really don't think the car will rollout that quickly. What do you think, .400 rollout or even longer?
Thanks for your help!

SteveW

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Moneymaker
Administrator

Posts: 19686
From: Lyons, IL, USA
Registered: May 99

posted 01-01-2002 08:30 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Steve you will need to measure the circumferance of the front tires at full air pressure right down the middle.

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Alex Denysenko
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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 01-01-2002 08:41 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
OK Alex,

76 1/8"

SteveW

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Moneymaker
Administrator

Posts: 19686
From: Lyons, IL, USA
Registered: May 99

posted 01-01-2002 08:55 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
We also need the diameter Steve. I used to know how to figure that out from the circumferance, but I am very high on RC Cola and cookies right now. ( oh wow man)

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Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
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SteveLaRiviere
Administrator

Posts: 32961
From: Saco, Maine
Registered: May 99

posted 01-01-2002 08:59 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
76.125 / 3.14 = 24.24"

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'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC

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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 01-01-2002 09:10 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Thanks Steve L!

Happy NewYear!!


SteveW

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SteveLaRiviere
Administrator

Posts: 32961
From: Saco, Maine
Registered: May 99

posted 01-01-2002 09:17 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
Welcome, SteveW!

Happy New Year to you, too!

------------------

'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC

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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 01-01-2002 11:11 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
For simplicity, let me ask this. Can you "go red" on a .500 light with a traction bar equipped, leaf sprung, automatic drag car? (Not back halved, no 4 link, no ladder bars, no huge slicks, etc. If so how much delay would you need to cut .500 lights? Thanks!

SteveW

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V8 Thumper
Gearhead

Posts: 3366
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 01-01-2002 11:20 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
---------------------------------------------
Originally posted by Moneymaker:

... but I am very high on RC Cola and cookies right now. ( oh wow man)
---------------------------------------------


LMAO

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Moneymaker
Administrator

Posts: 19686
From: Lyons, IL, USA
Registered: May 99

posted 01-02-2002 12:05 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Dial in a 240 for roll out into your practice tree Steve.

------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Moneymaker Bio
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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 01-02-2002 11:47 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Thanks Alex,

Now how much time for the vehicle's reaction ? Maybe .110 sec, for .350 seconds total vehicle reaction time + rollout?

What I'm thinking is that the car staged shallow will be around .350 seconds (VRT + RO) plus .200 seconds for driver reaction time for about .550 seconds leaving off the last yellow. But on the practice tree you have to wait til after the last yellow or you'll go red. Like a back-halved 9 sec. ET Pro car may be capable of, where they have to throw .010 seconds into the delay box, to leave off a .400 tree.

Do you think that the '66 is capable of going red on a .500 light leaving on the last yellow and shallow staged? Taking into account the 19 year old driver's reflexes.


SteveW

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Money Maker
Administrator

Posts: 63
From: Lyons IL, USA
Registered: Jan 2002

posted 01-02-2002 02:16 PM     Click Here to See the Profile for Money Maker   Click Here to Email Money Maker     Edit/Delete Message   Reply w/Quote
Steve, what I have found with a trans brake and a button that you are either on or you are not. I always shallow stage and leave off of the last yellow. More often then not I am under .550 and not red. If I try to stage too deep then I will go red every time. You will also have to take into consideration Melissas finger dexterity and reaction in the car, not just on a practice tree. Adreniline flows much more freely with the sound of a stout motor pounding in your ears.

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Co-Administrator and Moderator
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NHRA and IHRA SS/LA National Record Holder
2000, 2001, and 2002
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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 01-02-2002 02:24 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
That's what we needed!
Thanks Alex!

SteveW

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