CLASS RACER FORUM
Page 2 of 2 1 2
Show 40 post(s) from this thread on one page

CLASS RACER FORUM (https://classracer.com/classforum/index.php)
-   Stock and Super Stock Tech (https://classracer.com/classforum/forumdisplay.php?f=4)
-   -   Transbrake launch rpm? (https://classracer.com/classforum/showthread.php?t=25573)

L79racer 05-06-2010 04:45 PM
Re: Transbrake launch rpm?
 
Quote:
Originally Posted by Bob Verwold (Post 186117)
L79 ,you know when ya get into the 9.s the rules change!!!
Yea I know, I dont have a license yet and car isnt certified but, I still want the slip baby!! LOL!!

Mike Pearson 05-07-2010 06:35 AM
Re: Transbrake launch rpm?
 
On my car the leave RPM more affects the reaction time than the ET. I would start out about 3800. Then bump up or down to find a comfortable spot on the tree

Darrin Christen 05-07-2010 08:43 AM
Re: Transbrake launch rpm?
 
2850# car with 355" sbc, glide with 1.76 low gear, 5,800 stahl, 33" tall tire, 5.43 rear gear, leaving with trans brake at 4,000-4,600 it will 60' in the low 1.30's and run 9.80's-9.90's at 132-134mph crossing at 8,000rpm. I have only foot braked the car once in the last couple of years and it ran 10.20 leaving at about 1,800 rpm in the middle of the summer. On my car I think the brake is worth about a .10-.15. Hope this helps.

L79racer 05-08-2010 08:21 AM
Re: Transbrake launch rpm?
 
Quote:
Originally Posted by Darrin Christen (Post 186208)
2850# car with 355" sbc, glide with 1.76 low gear, 5,800 stahl, 33" tall tire, 5.43 rear gear, leaving with trans brake at 4,000-4,600 it will 60' in the low 1.30's and run 9.80's-9.90's at 132-134mph crossing at 8,000rpm. I have only foot braked the car once in the last couple of years and it ran 10.20 leaving at about 1,800 rpm in the middle of the summer. On my car I think the brake is worth about a .10-.15. Hope this helps.
Yes this is exactly what I was looking for. Now if you can go a low 1.30
should I be able to do the same because my mph matches yours? I have 4.56 gears with a 29" slick with a 1.80 first gear and 5500 stall.

Darrin Christen 05-08-2010 08:49 AM
Re: Transbrake launch rpm?
 
Quote:
Originally Posted by L79racer (Post 186340)
Yes this is exactly what I was looking for. Now if you can go a low 1.30
should I be able to do the same because my mph matches yours? I have 4.56 gears with a 29" slick with a 1.80 first gear and 5500 stall.
I would think so. How much does your car weigh and what size is your engine?

L79racer 05-08-2010 09:32 AM
Re: Transbrake launch rpm?
 
Quote:
Originally Posted by Darrin Christen (Post 186345)
I would think so. How much does your car weigh and what size is your engine?
Its a pump gas 383 weighing in at 2870 with me in it.

Darrin Christen 05-08-2010 09:51 AM
Re: Transbrake launch rpm?
 
Quote:
Originally Posted by L79racer (Post 186352)
Its a pump gas 383 weighing in at 2870 with me in it.
I'm guessing it crosses at about 7,000 rpm?

L79racer 05-08-2010 12:43 PM
Re: Transbrake launch rpm?
 
Quote:
Originally Posted by Darrin Christen (Post 186357)
I'm guessing it crosses at about 7,000 rpm?
Yup, 7200-7400


All times are GMT -4. The time now is 02:04 PM.
Page 2 of 2 1 2
Show 40 post(s) from this thread on one page

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.