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Dragstrip and Launch Techniques Discussion 1/4 mile, 1/8 mile, launch discussions.

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Old 07-13-2009, 11:58 PM   #1
1320junkie
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13.07 in the 1/4 Bone Stock

Congrats NineBall!!



Time Slip verified and videos to come...Congrats on being the King of the Hill (Bone Stock) so far...I can't wait to see if you hit the 12's soon, once you do I got a cool crest you can throw in your sig if you want.

1. NineBall - 13.07 @ 109.07 mph (LS3, M6)
2. Matt (tunetime) - 13.25 @ 106. 4 mph (L99, A6)
3. Foglin - 13.28 @ 106.8 mph (LS3, M6)
4.Amwellls1 - 13.31 @ 107.0 mph (LS3, M6)
5. BLT4SPD - 13.58 @ 96.34 mph (L99,A6)
6. PatrickfromMD - 13.59 @ 104.55 (L99,A6)
7. I Am Legend - 13.82 @ 106.91 mph (LS3,M6)
8. Toehead93 - 13.86 @ 102.66 mph (L99,A6)
9. Pharmd - 13.90 @ 102.3 mph ( L99, A6)
10. Mlee - 13.99 @ 103.1 mph (L99, A6)
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Old 07-14-2009, 08:47 AM   #2
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Cool .. can't wait to see them !!

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Old 07-14-2009, 09:13 AM   #3
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Well done!!!! So close to 12s... can't wait to hear the details!
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Old 07-14-2009, 05:46 PM   #4
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Yeah, I could have hit 12s with a 1.9X anything 60' time that night. Unfortunately some other car blew its tranny on the line and oiled the track down for the rest of the night. Typical!

I may try to make one more visit before modding the car. I'd really like to get a bone stock 12s pass in the 100F weather....just to do it

Tony
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Old 07-14-2009, 05:48 PM   #5
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Quote:
Originally Posted by Nine Ball View Post
Yeah, I could have hit 12s with a 1.9X anything 60' time that night. Unfortunately some other car blew its tranny on the line and oiled the track down for the rest of the night. Typical!

I may try to make one more visit before modding the car. I'd really like to get a bone stock 12s pass in the 100F weather....just to do it

Tony
I hope you do it
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Old 07-14-2009, 07:30 PM   #6
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Quote:
Originally Posted by Nine Ball View Post
Yeah, I could have hit 12s with a 1.9X anything 60' time that night. Unfortunately some other car blew its tranny on the line and oiled the track down for the rest of the night. Typical!

I may try to make one more visit before modding the car. I'd really like to get a bone stock 12s pass in the 100F weather....just to do it

Tony

LMK when you're going back and I'll go make some runs too...
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Old 07-14-2009, 07:45 PM   #7
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Finally figured out my digital camera. Here is the vid of the pass:



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Old 07-14-2009, 08:10 PM   #8
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where is the person located and how many runs did he/she do?
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Old 07-14-2009, 08:12 PM   #9
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where is the person located and how many runs did he/she do?
Post #4 and #7 are his ask him any questions you may have
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Old 07-14-2009, 09:46 PM   #10
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use launch control on that pass?
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Old 07-14-2009, 10:14 PM   #11
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Yeah, did you use launch control or what setting did you use?
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Old 07-14-2009, 10:19 PM   #12
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Didn't use launch control all night. For this pass, I held the RPM steady between 3500-3700 rpm and gradually slipped out the clutch while applying more throttle. The goal is to keep the rpm in that starting range, and time it so that by the time the clutch is all the way out, your gas pedal is on the floor. Takes a little seat time, and different tracks will vary on the rpm range due to traction/prep.

I'd recommend starting out around 2500-2700 rpm. If you bog the engine, that means you have enough traction to try a higher rpm range. Say 2800-3000 next. If you spin too much, maybe need to drop the rpm down a bit next time around.

Shifts were powershifts (no throttle lift) at ~6300 rpm or so. Stock tach is kind of hard to read accurately.
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Old 07-15-2009, 01:30 AM   #13
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nice run
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Old 07-18-2009, 12:56 PM   #14
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Originally Posted by Nine Ball View Post
Didn't use launch control all night. For this pass, I held the RPM steady between 3500-3700 rpm and gradually slipped out the clutch while applying more throttle. The goal is to keep the rpm in that starting range, and time it so that by the time the clutch is all the way out, your gas pedal is on the floor. Takes a little seat time, and different tracks will vary on the rpm range due to traction/prep.

I'd recommend starting out around 2500-2700 rpm. If you bog the engine, that means you have enough traction to try a higher rpm range. Say 2800-3000 next. If you spin too much, maybe need to drop the rpm down a bit next time around.

Shifts were powershifts (no throttle lift) at ~6300 rpm or so. Stock tach is kind of hard to read accurately.
What settings did you use on the car? Competitive mode? TC? etc. Its crazy hot in AZ right now usually 110-115
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Old 07-18-2009, 01:32 PM   #15
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That's a heck of a run with that DA. From the video and your own account the track was holding a 3500+ rpm clutch slip so I imagine the 60ft was in the 2.0 range.
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Old 07-19-2009, 10:01 AM   #16
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Karfan, it was a 2.057 60' time.

I run with TC off, just one push of the button. Tires were at 37 psi, just like it came from the factory.

Doesn't look like I'll make it back to the track stock. MBRP catback and Magnacharger TVS2300 arrived this past week. I'm eager to get modding... Would rather run 10s
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