Notices
Drag Racing Find out the best way to launch and see what kind of times other people are posting. No posting of street racing related stories!

Shifting and Trap speeds....

Old May 9, 2004 | 01:49 PM
  #1  
umiami80's Avatar
Thread Starter
Account Disabled
iTrader: (1)
 
Joined: Jun 2003
Posts: 2,026
Likes: 0
From: NJ
Shifting and Trap speeds....

Been wondering a few things while drag racing....

OK, so I guess a more agressive launch will yeild higher traps and I know better 1/4 times.

So I guess what I am saying is that a real agressive launch and a 5 second or faster 330 foot time will yelid higher traps or are traps goning to be the same and only the 1/4 time can change with shifting (to a point).


Just wondering cuz I am racing with a stock clitch, pretty docil launch at 5000 rpms, slip till moving, then bang it, shift at 7500, do a slow 330 shift @ 5.5 seconds. I do this cuz my car does not like 1-2 shifts that much , also the stock clutch is simply not holding the power as well. Not that it slips but ti does protest somewhat. Even If I bang it from a roll, it does stink a little after wards.

Also do you thing a better clutch and 6000 RPM launch and a quicker 330 foot time will yeild a better trap?


Again, minor launch with 1.8 60 foots, shifting at 7500, slow 1-2 shift, what do I have to do to get the traps up?
Reply
Old May 9, 2004 | 02:03 PM
  #2  
rACerS's Avatar
Evolving Member
iTrader: (9)
 
Joined: Dec 2003
Posts: 421
Likes: 0
From: Bay Area
trap speed usually equals hp. to bring up your trap speed you need more power (or traction if your making too much hp). And since traction isnt a problem for the evo's I would say you need more hp to get what you want. In my z06 I could run a 11.40 or a 12.20 and it would always have the same 121mph trap speed no matter what I did. With a bad launch, good launch, Et streets, or goodyear f1's my trap would never change. This has always proven true in the cars that I have had. A couple weeks ago I ran my wifes evo, and with a bog on the launch It ran a 12.80 @ 111.8mph and with a good launch it would run a 12.3 @ 112mph, so not a bid difference in trap speed.
Reply
Old May 9, 2004 | 02:23 PM
  #3  
4g63powered's Avatar
Evolving Member
 
Joined: Dec 2003
Posts: 103
Likes: 0
From: Southern California
Originally Posted by umiami80
Been wondering a few things while drag racing....

OK, so I guess a more agressive launch will yeild higher traps and I know better 1/4 times.

So I guess what I am saying is that a real agressive launch and a 5 second or faster 330 foot time will yelid higher traps or are traps goning to be the same and only the 1/4 time can change with shifting (to a point).


Just wondering cuz I am racing with a stock clitch, pretty docil launch at 5000 rpms, slip till moving, then bang it, shift at 7500, do a slow 330 shift @ 5.5 seconds. I do this cuz my car does not like 1-2 shifts that much , also the stock clutch is simply not holding the power as well. Not that it slips but ti does protest somewhat. Even If I bang it from a roll, it does stink a little after wards.

Also do you thing a better clutch and 6000 RPM launch and a quicker 330 foot time will yeild a better trap?



Again, minor launch with 1.8 60 foots, shifting at 7500, slow 1-2 shift, what do I have to do to get the traps up?
I had the same problem with 1st to 2nd. My friend had it too. try shifting before getting to 7k rpm. Anything above that my car doesnt like it. Its just for this shift. the rest is fine.
Reply
Old May 14, 2004 | 11:16 PM
  #4  
umiami80's Avatar
Thread Starter
Account Disabled
iTrader: (1)
 
Joined: Jun 2003
Posts: 2,026
Likes: 0
From: NJ
Next Wednesday, I will re-dyno my ride and see what is up.
Reply
Old May 16, 2004 | 04:42 PM
  #5  
bolsen's Avatar
Evolved Member
iTrader: (2)
 
Joined: Apr 2004
Posts: 1,940
Likes: 1
From: Milwaukee, WI
Originally Posted by umiami80
Been wondering a few things while drag racing....

OK, so I guess a more agressive launch will yeild higher traps and I know better 1/4 times.

So I guess what I am saying is that a real agressive launch and a 5 second or faster 330 foot time will yelid higher traps or are traps goning to be the same and only the 1/4 time can change with shifting (to a point).


Just wondering cuz I am racing with a stock clitch, pretty docil launch at 5000 rpms, slip till moving, then bang it, shift at 7500, do a slow 330 shift @ 5.5 seconds. I do this cuz my car does not like 1-2 shifts that much , also the stock clutch is simply not holding the power as well. Not that it slips but ti does protest somewhat. Even If I bang it from a roll, it does stink a little after wards.

Also do you thing a better clutch and 6000 RPM launch and a quicker 330 foot time will yeild a better trap?


Again, minor launch with 1.8 60 foots, shifting at 7500, slow 1-2 shift, what do I have to do to get the traps up?
Your traps will be higher with more HP.

I was at the track last night. Car fully stock (first time at the track with this car only raced 4 times, with 1500 miles on it.) I could only get a 2.0 60', but my highest trap is 102. My higher traps were at lower shifts since the power band is so weak up high. I'm goina try a lower shift point and hopefully let the torque pull me through the powerband
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Fourdoor
09+ Ralliart Engine/Turbo/Drivetrain
8
Nov 2, 2009 03:06 PM
Joe's Evo X
Drag Racing
28
Jul 10, 2009 04:22 PM
kouzman
Drag Racing
34
Dec 4, 2008 07:15 AM
EvoDan2004
Drag Racing
14
Apr 5, 2007 05:47 PM
PeteyTurbo
Drag Racing
5
May 8, 2005 11:43 AM


Thread Tools
Search this Thread

All times are GMT -7. The time now is 01:49 PM.