Notices
Drag NHRA, IDRC, IHRA, NDRA

13.3 at 106mph and the Axle carnage :(

Thread Tools
 
Search this Thread
 
Old 10-27-2006, 09:05 PM
  #21  
Zincognito
Registered User
iTrader: (2)
 
Zincognito's Avatar
 
Join Date: Jan 2006
Location: SoCal
Posts: 3,793
Likes: 0
Received 0 Likes on 0 Posts
Default

that must have been something else when you snapped it. What was the announcer saying?
Old 10-27-2006, 10:02 PM
  #22  
VeeTec
Registered User
 
VeeTec's Avatar
 
Join Date: Jun 2004
Location: Jackson County, GA
Posts: 1,384
Likes: 0
Received 0 Likes on 0 Posts
Default

Congrats on the new PB.
Old 10-28-2006, 12:28 AM
  #23  
GFrnk69
Registered User
iTrader: (1)
 
GFrnk69's Avatar
 
Join Date: Aug 2005
Location: Los Angeles
Posts: 807
Likes: 0
Received 0 Likes on 0 Posts
Default

what did u run alberto?
Old 10-28-2006, 05:35 AM
  #25  
Z-Gad
Registered User
iTrader: (1)
 
Z-Gad's Avatar
 
Join Date: May 2005
Location: Orlando, Fl
Posts: 103
Likes: 0
Received 0 Likes on 0 Posts
Default

Congrats on the new time.
If you look at your timeslips, you'll see that it is all in the 60'.
Every .10 improvement you make in the 60' = .15 in the 1/4 mile.
It's always a good day at the track when you beat your previous best.
Bummer about the axle though. Are axles a weak link in the drivetrain?
Old 10-28-2006, 07:45 AM
  #26  
Alberto
Cranky FI Owner
iTrader: (14)
 
Alberto's Avatar
 
Join Date: Mar 2003
Location: DMV
Posts: 34,716
Likes: 0
Received 8 Likes on 8 Posts
Default

He already described preloading-its basically pushing the clutch in 1/2-1" so the car doesnt move forward but is ready to disengage. You do this instead of holding the clutch down to the floor and coming up and dropping it from that point, if you did that you would shock the drivetrain upon release.

I posted my video/story in the FI section on what I did
Old 10-29-2006, 07:05 PM
  #28  
diwun67
Registered User
iTrader: (13)
 
diwun67's Avatar
 
Join Date: Jun 2005
Location: In the wrong lane
Posts: 6,433
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by plumpzz
are you using stock clutch?
When i had the 05 transmission, any preload of the clutch would cause it to stick. With the newer 009 transmission its FAR better and it bites real hard when warmed up.
How the hell do you preload the transmission without the car moving when staged???

Ok n/m, it's just keeping the clutch pedal pushed in right before it engages, correct? If so, that's what I do

Last edited by diwun67; 10-29-2006 at 07:08 PM.
Old 10-29-2006, 09:35 PM
  #29  
mrtomcat
Registered User
iTrader: (3)
 
mrtomcat's Avatar
 
Join Date: Nov 2004
Location: Studio City, CA
Posts: 2,697
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by diwun67
How the hell do you preload the transmission without the car moving when staged???

Ok n/m, it's just keeping the clutch pedal pushed in right before it engages, correct? If so, that's what I do
the z clutch has a high engagement point, you just need to practise and find that sweet spot just before it engages.

This is another good argument for having line locks, since it's much easier to let the clutch out a bit knowing the car won't move until you let the button go, that's the way prostock cars launch
Old 10-30-2006, 07:17 AM
  #30  
TheCajunStyle
Registered User
iTrader: (6)
 
TheCajunStyle's Avatar
 
Join Date: Dec 2005
Location: Berkshires
Posts: 532
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by mrtomcat
the z clutch has a high engagement point, you just need to practise and find that sweet spot just before it engages.

This is another good argument for having line locks, since it's much easier to let the clutch out a bit knowing the car won't move until you let the button go, that's the way prostock cars launch
agree, but for the wednesday night test & tuner who only goes twice per season, they need to learn how to properly launch a car. introducing line locks takes away from that necessary learning experience.
Old 10-30-2006, 11:30 AM
  #31  
mrtomcat
Registered User
iTrader: (3)
 
mrtomcat's Avatar
 
Join Date: Nov 2004
Location: Studio City, CA
Posts: 2,697
Likes: 0
Received 0 Likes on 0 Posts
Default

true.

using a bit of ebrake helps as well btw
Old 10-30-2006, 11:36 AM
  #32  
Alberto
Cranky FI Owner
iTrader: (14)
 
Alberto's Avatar
 
Join Date: Mar 2003
Location: DMV
Posts: 34,716
Likes: 0
Received 8 Likes on 8 Posts
Default

Originally Posted by TheCajunStyle
agree, but for the wednesday night test & tuner who only goes twice per season, they need to learn how to properly launch a car. introducing line locks takes away from that necessary learning experience.
No it doesnt, having line locks IMO wont make the launch any easier, if anything slightly harder as you not only have to concentrate on holding the wheel, shifter and revs right but you have to launch and let that button go at the exact same time, too much BS IMO, Id use them for warming up tires only.
Old 10-30-2006, 11:43 AM
  #33  
mrtomcat
Registered User
iTrader: (3)
 
mrtomcat's Avatar
 
Join Date: Nov 2004
Location: Studio City, CA
Posts: 2,697
Likes: 0
Received 0 Likes on 0 Posts
Default

even though I agree it's another step however at least on our tracks here. If don't hold the ebrake or line lock the car starts rolling the second I revv above 4000 so I have to have some kind of brake no matter what.

maybe you east coast guys are blessed with better prepped tracks but here it's a pain
Old 10-30-2006, 11:50 AM
  #34  
supra crazy
Registered User
iTrader: (22)
 
supra crazy's Avatar
 
Join Date: Feb 2003
Location: SoFlo
Posts: 1,940
Received 0 Likes on 0 Posts
Default

Originally Posted by Alberto
Wow-that broke the shaft, impressive

Todd's car def runs strong. With a 1.760ft he'd be right around 12.9's, only a matter of time tillhe beats my NA time and takes the crown...Todd I have yet to get the camera from my friend, Ill grab it ASAP and try to makethat vid of your runs, although he is out of the area for the next few days Ill get the video up

edit-it was the drivers side right? You only replaced that side I assume?
yea but who has the best time that isnt running slicks?
Old 10-30-2006, 11:55 AM
  #35  
Alberto
Cranky FI Owner
iTrader: (14)
 
Alberto's Avatar
 
Join Date: Mar 2003
Location: DMV
Posts: 34,716
Likes: 0
Received 8 Likes on 8 Posts
Default

Originally Posted by supra crazy
yea but who has the best time that isnt running slicks?
You mean who is fastest on DR's or on only street tires excluding slicks/DR's? I know Veetec on here ran 13.2 but Im pretty sure that was on drag radials, as far as street tire only he may have also done 13.3-13.4 likethat. NA I only ran 1X on stock rims/street tires after running slicks, I launched horrible (2.2 60ft) and ran 13.5 @ 106mph...
Old 10-30-2006, 01:55 PM
  #36  
ACEMAN
Master
Thread Starter
iTrader: (29)
 
ACEMAN's Avatar
 
Join Date: Jun 2002
Location: Hagerstown MD
Posts: 2,774
Likes: 0
Received 1 Like on 1 Post
Default

Hey Alberto,

You think the light weight flywheel could be one of the reasons i am bogging off the line?

Im also tossing around the idea of going back one more time this year before the season is out There are 4 more test and tunes and a street night yet in November.

Going to see if i can get the time to replace a axle down to 20mins

Later
Aceman
Old 10-31-2006, 08:17 AM
  #37  
sfarrah
Registered User
iTrader: (4)
 
sfarrah's Avatar
 
Join Date: Sep 2002
Location: Austin
Posts: 800
Likes: 0
Received 0 Likes on 0 Posts
Default

Congrats on the times and sorry to hear about the axle. What slicks and in what size were you using? Any plans to upgrade the axles?

I've never preloaded on my launches-luckily I haven't snapped anything yet as I've launched at 7k rpm with as little as 11psi in the ET streets. Hope to get back to the track soon as it's starting to cool off here in TX.
Old 10-31-2006, 04:22 PM
  #38  
Alberto
Cranky FI Owner
iTrader: (14)
 
Alberto's Avatar
 
Join Date: Mar 2003
Location: DMV
Posts: 34,716
Likes: 0
Received 8 Likes on 8 Posts
Default

Originally Posted by aceman
Hey Alberto,

You think the light weight flywheel could be one of the reasons i am bogging off the line?

Im also tossing around the idea of going back one more time this year before the season is out There are 4 more test and tunes and a street night yet in November.

Going to see if i can get the time to replace a axle down to 20mins

Later
Aceman
It may make your launching a little more difficult, but all of the NA 12 sec Z's are running lightened FW's...I never had a chance to run my car NA with the clutch/fw combo it would have launched so much harder as my tired stock clutch was softening up my launches considerably.
Old 11-02-2006, 07:21 PM
  #39  
sfarrah
Registered User
iTrader: (4)
 
sfarrah's Avatar
 
Join Date: Sep 2002
Location: Austin
Posts: 800
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by aceman
Hey Alberto,

You think the light weight flywheel could be one of the reasons i am bogging off the line?

Later
Aceman
If you're bogging the launch either increase your launch rpm or raise your tire pressure. Last time out I kept adding a pound at a time and reached about 16psi with minimal bogging at the top of 1st and 7k rpm launches. I'll start at 16psi and go from there next time as the track closed before I could try any more runs with more tire pressure.
Old 11-02-2006, 07:33 PM
  #40  
Gators2001
Registered User
iTrader: (12)
 
Gators2001's Avatar
 
Join Date: Jan 2005
Location: Miami, FL
Posts: 1,298
Likes: 0
Received 1 Like on 1 Post
Default

DAmn, nice Break!


Quick Reply: 13.3 at 106mph and the Axle carnage :(



All times are GMT -8. The time now is 05:58 AM.