How to build boost using the Trans Brake?
Third gear and reverse would start going out at the same time. The first time I ate the pump. Not sure this time. I was offered $350 from someone for it even with it broke so I sold it to off set the cost of the PG.
Here soon, I will also get the bump box. If anyone has a part number for it.
Here soon, I will also get the bump box. If anyone has a part number for it.
For your setup, get your new brakes installed and working before you go off buying all this other ****.
IMO, you shouldnt need a bump box.
Will you? Possibly, but I dont think so.
In our car, I get into the pre stage bulb and get on the brakes (ours has dual rear calipers though) and give it around 1/2 throttle. It will start to build boost and once its built enough boost, 2 things will happen. It will either start to push through the brakes into the stage beam, or if the brakes are really strong, it will WANT to push, but it cant so then you need to let it push through just enough by letting off the brakes just BARELY.
After your in the stage beam, then jump on the T/B.
Heres an example of a footbrake-to-transbrake deal
Heres a vid after we swapped to dual waste gates, no foot braking anymore at all...straight to the tree and fast spool.
IMO, you shouldnt need a bump box.
Will you? Possibly, but I dont think so.
In our car, I get into the pre stage bulb and get on the brakes (ours has dual rear calipers though) and give it around 1/2 throttle. It will start to build boost and once its built enough boost, 2 things will happen. It will either start to push through the brakes into the stage beam, or if the brakes are really strong, it will WANT to push, but it cant so then you need to let it push through just enough by letting off the brakes just BARELY.
After your in the stage beam, then jump on the T/B.
Heres an example of a footbrake-to-transbrake deal
Heres a vid after we swapped to dual waste gates, no foot braking anymore at all...straight to the tree and fast spool.
Thread Starter
TECH Fanatic
Joined: Oct 2011
Posts: 1,425
Likes: 0
For your setup, get your new brakes installed and working before you go off buying all this other ****.
IMO, you shouldnt need a bump box.
Will you? Possibly, but I dont think so.
In our car, I get into the pre stage bulb and get on the brakes (ours has dual rear calipers though) and give it around 1/2 throttle. It will start to build boost and once its built enough boost, 2 things will happen. It will either start to push through the brakes into the stage beam, or if the brakes are really strong, it will WANT to push, but it cant so then you need to let it push through just enough by letting off the brakes just BARELY.
After your in the stage beam, then jump on the T/B.
Heres an example of a footbrake-to-transbrake deal
http://www.youtube.com/watch?v=lYKynvfWkLw
Heres a vid after we swapped to dual waste gates, no foot braking anymore at all...straight to the tree and fast spool.
http://www.youtube.com/watch?v=P0IhkRuaEs8
IMO, you shouldnt need a bump box.
Will you? Possibly, but I dont think so.
In our car, I get into the pre stage bulb and get on the brakes (ours has dual rear calipers though) and give it around 1/2 throttle. It will start to build boost and once its built enough boost, 2 things will happen. It will either start to push through the brakes into the stage beam, or if the brakes are really strong, it will WANT to push, but it cant so then you need to let it push through just enough by letting off the brakes just BARELY.
After your in the stage beam, then jump on the T/B.
Heres an example of a footbrake-to-transbrake deal
http://www.youtube.com/watch?v=lYKynvfWkLw
Heres a vid after we swapped to dual waste gates, no foot braking anymore at all...straight to the tree and fast spool.
http://www.youtube.com/watch?v=P0IhkRuaEs8
Thanks for posting.
you will be switching to a glide so you will have a lower starting line ratio and your brakes will hold.
i know i cant footbrake my car in first gear without it rolling, but in second gear, i can hold it wide open all day( on a 3500 rpm 2 step) and it will get to my wastgate setting of about 11 psi and not move an inch.
do you have a 2 step?
i know i cant footbrake my car in first gear without it rolling, but in second gear, i can hold it wide open all day( on a 3500 rpm 2 step) and it will get to my wastgate setting of about 11 psi and not move an inch.
do you have a 2 step?
Thread Starter
TECH Fanatic
Joined: Oct 2011
Posts: 1,425
Likes: 0
you will be switching to a glide so you will have a lower starting line ratio and your brakes will hold.
i know i cant footbrake my car in first gear without it rolling, but in second gear, i can hold it wide open all day( on a 3500 rpm 2 step) and it will get to my wastgate setting of about 11 psi and not move an inch.
do you have a 2 step?
i know i cant footbrake my car in first gear without it rolling, but in second gear, i can hold it wide open all day( on a 3500 rpm 2 step) and it will get to my wastgate setting of about 11 psi and not move an inch.
do you have a 2 step?
Man, thanks for posting that. I wasn't planning on getting the bump box unless I couldn't get it done with the new brakes. I will see how she does with the new brakes first. I think a key point here is that you use half throttle to get it going. That got me thinking and most the time we are just flooring it because of the transbrake. However, when I practiced this last time on the street I also only used half throttle until it built boost and it hit 12lbs. That may be the key more than anything else in my set up. I may just need to use half throttle until I get the boost I want and it hits the 2 step.
Thanks for posting.
Thanks for posting.
Seat time is key, you start learning more about what the car wants/needs, what it feels like, how it reacts to certains ways/things, etc etc.
Now that I look at my vid, I still thing the first vid is after we switched to dual W/G's...I cant find a vid from using the single...it definitely took longer than that to spool. Even in the second vid, im late on the reaction time b/c I was still learning the new spool time with the dual W/G's and didnt think it was at full boost yet.
Cant wait for spring and we can get this bitch on 20#'s and put some more boost in for leaving the starting line.
