Trans Brake launching vs. TC Stall...Drag question
#1
Restricted User
Thread Starter
iTrader: (9)
Join Date: Sep 2002
Location: Sierra Vista, AZ
Posts: 7,603
Likes: 0
Received 0 Likes
on
0 Posts
Trans Brake launching vs. TC Stall...Drag question
Ok, I am running a Rossler TH350 Terminator II with Rossbrake and an ATI 4,000stall TC. If I add in the Harlan 2step, where should I end up RPM wise? Does it defeat the stall per-sae or no? My confusion is, using the Brake, I can lock the trans 1st & R together, and if I throttle to 5,000rpms, is there any benefit of having a 4,000 stall? Or would I only want to 2step up to say 3,500rpms? ****. Not even sure I am going to hook the 2step up, but I wanted to tie in the 2Step, Rossbrake, and Nitrous into one, Arm the Nitrous, Hit the big red Trans Brake button locking the trans, activating the 2step, mash the throttle, and when I release...2step goes off, and Nitrous goes on away we go!
Thanks
Charlie
Thanks
Charlie
#2
TECH Junkie
iTrader: (10)
Join Date: Nov 2002
Location: Deerfield Beach, FL
Posts: 3,672
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by CAT3
Ok, I am running a Rossler TH350 Terminator II with Rossbrake and an ATI 4,000stall TC. If I add in the Harlan 2step, where should I end up RPM wise? Does it defeat the stall per-sae or no? My confusion is, using the Brake, I can lock the trans 1st & R together, and if I throttle to 5,000rpms, is there any benefit of having a 4,000 stall? Or would I only want to 2step up to say 3,500rpms? ****. Not even sure I am going to hook the 2step up, but I wanted to tie in the 2Step, Rossbrake, and Nitrous into one, Arm the Nitrous, Hit the big red Trans Brake button locking the trans, activating the 2step, mash the throttle, and when I release...2step goes off, and Nitrous goes on away we go!
Thanks
Charlie
Thanks
Charlie
#3
TECH Junkie
iTrader: (9)
Join Date: Jun 2003
Location: Winter Garden, Florida
Posts: 3,428
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by CAT3
Ok, I am running a Rossler TH350 Terminator II with Rossbrake and an ATI 4,000stall TC. If I add in the Harlan 2step, where should I end up RPM wise? Does it defeat the stall per-sae or no? My confusion is, using the Brake, I can lock the trans 1st & R together, and if I throttle to 5,000rpms, is there any benefit of having a 4,000 stall? Or would I only want to 2step up to say 3,500rpms? ****. Not even sure I am going to hook the 2step up, but I wanted to tie in the 2Step, Rossbrake, and Nitrous into one, Arm the Nitrous, Hit the big red Trans Brake button locking the trans, activating the 2step, mash the throttle, and when I release...2step goes off, and Nitrous goes on away we go!
Thanks
Charlie
Thanks
Charlie
I'd definitely hook up the 2 step. Devon's right about you can only stall as high as your converter will let you. Without the 2 step you won't have much choice on consistantly launching from anywhere (RPM-wise) except against the full stall of the converter. With the 2 step you will have a chance to adjust and get more flash. There's a great sling shot effect from not being fully on the converter.
Here's my favorite benefit - adjusting it to your R/T. If you are just little early or late on the tree a few hundred RPM's can make a big difference. I'm a student of trying to constantly improve on R/T and try every tool possible.
#4
Restricted User
Thread Starter
iTrader: (9)
Join Date: Sep 2002
Location: Sierra Vista, AZ
Posts: 7,603
Likes: 0
Received 0 Likes
on
0 Posts
Well that makes me feel better. I have only launched from the brake once to test it, and it was on my way downtown...just a little one though Well, guess I will definatley have to hook up the two step then. I can just imagine the fun it will be "testing" to find the right launch rpm
#5
TECH Junkie
iTrader: (10)
Join Date: Nov 2002
Location: Deerfield Beach, FL
Posts: 3,672
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by CAT3
Well that makes me feel better. I have only launched from the brake once to test it, and it was on my way downtown...just a little one though Well, guess I will definatley have to hook up the two step then. I can just imagine the fun it will be "testing" to find the right launch rpm
#7
10 Second Club
iTrader: (12)
Join Date: Dec 2004
Location: Birmingham, Alabama
Posts: 2,034
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by The Juggernaut
A 2 step is always a good idea, but with a 4000 stall, I know I wouldn't need one.
The higher you can stall it up, the better the 60's until wheelies/traction become a problem.
The higher you can stall it up, the better the 60's until wheelies/traction become a problem.
A 2-step is highly recommended for the nitrous though..
Trending Topics
#8
6 Second Club Moderator
iTrader: (7)
Join Date: Sep 2002
Location: Lombard .IL
Posts: 3,682
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Loudmouth LS1
Be careful with that on the street, don't know what kind of tires you run on the street or how they hook, but i've heard that if you launch off the t-brake and are just annhialating the tires, that it will burn the t-brake up, don't know if that's true, but a buddy of mine told me that Carl Rossler told him that when he bought his turbo 400 from him. Cuz I was dicking around one night a doin t-brake launches on my street tires in a parking lot and then told my buddy the next day and that's when he told me that.
#9
Restricted User
Thread Starter
iTrader: (9)
Join Date: Sep 2002
Location: Sierra Vista, AZ
Posts: 7,603
Likes: 0
Received 0 Likes
on
0 Posts
Well, a prime concern for the 2step is for the consistency, since our track is almost alwasy unprepped, I can dial in the launch rpm. I tried the stock tach, and yep, its slow as **** and never the same amount behind The brake will only be used on sticky tire night, after some ET Street practicing for reaction of course. I heard about braking on the street as well, and avoided it since, and didnt roast the tires that time either. Just stalled up, and released to get a feel for it. Thanks everyone.
#10
TECH Addict
iTrader: (7)
Originally Posted by 1QuickT-A
A 2-step is highly recommended for the nitrous though..
when I was on nitrous I set the 2 step at 3500 and the window switch
at 4100 (stall speed was 4200).
When I was cam only(NA), I always put it right on the converter(5100)
H/C the 2 step was necessary again.
#11
TECH Junkie
iTrader: (10)
Join Date: Nov 2002
Location: Deerfield Beach, FL
Posts: 3,672
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by The Juggernaut
when I was on nitrous I set the 2 step at 3500 and the window switch
at 4100 (stall speed was 4200)
at 4100 (stall speed was 4200)
#12
10 Second Club
iTrader: (12)
Join Date: Dec 2004
Location: Birmingham, Alabama
Posts: 2,034
Likes: 0
Received 0 Likes
on
0 Posts
I could be wrong, but it looks to me like his converter would flash to 4200 rpms so he set the nitrous to come on about the same rpm as the converter was flashing.. and with a 1.36 short time I think he's got it dialed in pretty nicely..
#13
Restricted User
Thread Starter
iTrader: (9)
Join Date: Sep 2002
Location: Sierra Vista, AZ
Posts: 7,603
Likes: 0
Received 0 Likes
on
0 Posts
So I will hopefully get some TransBrake sticky tire launches this upcoming w/e. Find out where the flash point is, and then work on getting the nitrous hooked back up and start dialing that in. There's some pretty good info here. Thanks.
Charlie
Charlie
#14
TECH Junkie
iTrader: (10)
Join Date: Nov 2002
Location: Deerfield Beach, FL
Posts: 3,672
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 1QuickT-A
I could be wrong, but it looks to me like his converter would flash to 4200 rpms so he set the nitrous to come on about the same rpm as the converter was flashing.. and with a 1.36 short time I think he's got it dialed in pretty nicely..
#16
Restricted User
Thread Starter
iTrader: (9)
Join Date: Sep 2002
Location: Sierra Vista, AZ
Posts: 7,603
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by The Juggernaut
This allows a brief (milli)second before the nitrous hits which allows the tires
to plant and load the chassis before the monster torque hit.
I'm gonna have to start charging for all my secrets.
to plant and load the chassis before the monster torque hit.
I'm gonna have to start charging for all my secrets.
I was going to comment on the sharing of info.. Jugg.. I really appreciate the amount of info you shared on your setup. Rather than getting the "yeah it's gearing" or such response, you went and explained what yoru doing and then why. Thats some good poop there! Thanks. Once I get the new rearend, I will try to follow your staging process and hopefully will have similar results. Thanks.
Charlie
#17
TECH Junkie
iTrader: (10)
Join Date: Nov 2002
Location: Deerfield Beach, FL
Posts: 3,672
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by The Juggernaut
This allows a brief (milli)second before the nitrous hits which allows the tires
to plant and load the chassis before the monster torque hit.
I'm gonna have to start charging for all my secrets.
to plant and load the chassis before the monster torque hit.
I'm gonna have to start charging for all my secrets.
#18
I have gotten a 1.30 60ft on the brake.
I have gotten a 1.30 60ft on the brake with the 2step set 400rpms shy of the converter stall.
I have gotten a 1.30 60ft on the foot brake.
The only thing it does for me is helps with my reaction time.
I have gotten a 1.30 60ft on the brake with the 2step set 400rpms shy of the converter stall.
I have gotten a 1.30 60ft on the foot brake.
The only thing it does for me is helps with my reaction time.
#19
The way I set up my transbrake in my old car was hold down the transbrake button and floor it, it stalled to 4,500 when I let off the transbrake button the nitrous activates, I ran a 250 shot with a 4.86 gear M/T 33x16.5s tire. When it works right and you ask yourself am i doing a big wheelie when you see the sky, the transbrake is working good =P
#20
Restricted User
Thread Starter
iTrader: (9)
Join Date: Sep 2002
Location: Sierra Vista, AZ
Posts: 7,603
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by christophermorales
The way I set up my transbrake in my old car was hold down the transbrake button and floor it, it stalled to 4,500 when I let off the transbrake button the nitrous activates, I ran a 250 shot with a 4.86 gear M/T 33x16.5s tire. When it works right and you ask yourself am i doing a big wheelie when you see the sky, the transbrake is working good =P
Good lord thats a lot of tire! I havent wired my Nitrous into the TB yet, but will hopefully soon. As of now, I soft foot the throttle while on the brake to avoid the WOT tripping. Once the tires are swapped and suspension sorted out I hope to short time like GueSS Who!