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Adjustable Transbrake Buttons for Bottom bulb Racing?? #2625554
02/24/19 05:55 PM
02/24/19 05:55 PM
Joined: Oct 2005
Posts: 1,646
Ringtown, Pa.
Dartsport540 Offline OP
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Dartsport540  Offline OP
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Ringtown, Pa.
NHRA Division 1 is allowing transbrake, 2 steps , and air shifters this year. I have the air shifter and 2 step taken care of.

My question is about adjustable Transbrake buttons. I am looking at BIONDO - Terminator, or COLLECTOR TETHERS- Just-n-time. Anyone have any experience and or preference.

My car will go about .040 RED if I am leaving at the flash of the last yellow. Car is 1973 Dodge Dart sport, 540 cu. in. 727 3 speed auto, 4.10 gears. Torgue converter flashes to 5700. Usually 60 foot of 1.24 to 1.25 . Will carry front wheels out to about 50'.Best et 9.14 at 146 mph. Usually 9.20's et. We are freshening the engine now. will have a few more horsepower, guessing about 40 - 50 hp.

Trying to figure out what to order....


548 cu. in., Bill Mitchell Aluminum Block, CRT 727 auto trans, Alston Chassis. 8.981et at 149.46 mph. 1.204et - 60 foot, So Far....
Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: Dartsport540] #2625614
02/24/19 09:12 PM
02/24/19 09:12 PM
Joined: Jun 2009
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ky
68roadrunner Offline
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68roadrunner  Offline
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ky
i have the terminator in mine, i dont bottom bulb very much.

i mount it under the dash pad close to the steering wheel

with all the shims in it is supposed to be .015 slower than a mushroom button, and each shim is worth .005

i like it ok, if i cant get there with the button i have to make a launch chip change

Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: 68roadrunner] #2625795
02/25/19 11:56 AM
02/25/19 11:56 AM
Joined: Jul 2007
Posts: 250
bonney lake washington
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w2stroker Offline
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I bought this late last year and have only been able to use it for 2 races but really like it.https://www.facebook.com/pg/DuranRacingProducts/posts/
easily adjustable by the turn of a knob

Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: w2stroker] #2625827
02/25/19 01:29 PM
02/25/19 01:29 PM
Joined: Feb 2004
Posts: 34,828
S.E. South Dakota !
bigdad Offline
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bigdad  Offline
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Terminator has .040 adjustment , the Just -in -Time has .120

Just in time costs about twice as much


I have been using the Terminator , really worked good with ol combo

But for 2019 I am going to buy a new Just In time


The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: bigdad] #2625840
02/25/19 01:55 PM
02/25/19 01:55 PM
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Posts: 989
Addison,IL
OUTLAWSSAA Offline
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Better check with NHRA first. They had a list of acceptable vendors for trans break buttons.

Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: w2stroker] #2627175
02/28/19 05:35 PM
02/28/19 05:35 PM
Joined: Oct 2005
Posts: 1,646
Ringtown, Pa.
Dartsport540 Offline OP
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Originally Posted By w2stroker
I bought this late last year and have only been able to use it for 2 races but really like it.https://www.facebook.com/pg/DuranRacingProducts/posts/
easily adjustable by the turn of a knob


Duran Racing Products is what I ended up ordering. We will see how it works in a month....


548 cu. in., Bill Mitchell Aluminum Block, CRT 727 auto trans, Alston Chassis. 8.981et at 149.46 mph. 1.204et - 60 foot, So Far....
Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: Dartsport540] #2627695
03/01/19 10:54 PM
03/01/19 10:54 PM
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A39Coronet Offline
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What rpm on the 2 step? Lower it by 600 and try it. $0 change.


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Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: Dartsport540] #2627721
03/02/19 12:06 AM
03/02/19 12:06 AM
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bean town ....Ca
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WHITEDART Offline
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bean town ....Ca
This is what I used it's made by Biondo.. I had the Terminator and just did not care for all the shims.

53001.jpeg

In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: Dartsport540] #2627749
03/02/19 01:27 AM
03/02/19 01:27 AM
Joined: Jan 2008
Posts: 2,363
Cotati, CA
Dave Hall Offline
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Dave Hall  Offline
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I bought the .500 button in 2003. The telescope part was plastic and one time I left the steering wheel on the dash at Famoso, in hot weather and the thing melted into a "J"! "WhaaaCK!" is the noise it made when you sent it.

Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: A39Coronet] #2627815
03/02/19 09:04 AM
03/02/19 09:04 AM
Joined: Oct 2005
Posts: 1,646
Ringtown, Pa.
Dartsport540 Offline OP
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Originally Posted By A39Coronet
What rpm on the 2 step? Lower it by 600 and try it. $0 change.


I don't know what rpm on 2 step I will be using. When I footbraked it the last 3 years, I staged and left at 2000 Rpm.


548 cu. in., Bill Mitchell Aluminum Block, CRT 727 auto trans, Alston Chassis. 8.981et at 149.46 mph. 1.204et - 60 foot, So Far....
Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: Dartsport540] #2627817
03/02/19 09:10 AM
03/02/19 09:10 AM
Joined: Oct 2005
Posts: 1,646
Ringtown, Pa.
Dartsport540 Offline OP
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Ringtown, Pa.
This is a pic of The Predator Button, with the Piranha mount, made by Duran Racing Products. It will mount to my 1/4 stick shifter. It is NHRA approved.

Duran Racing Products Transbrake adjustable switch 3-1-19.jpg

548 cu. in., Bill Mitchell Aluminum Block, CRT 727 auto trans, Alston Chassis. 8.981et at 149.46 mph. 1.204et - 60 foot, So Far....
Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: Dave Hall] #2627818
03/02/19 09:12 AM
03/02/19 09:12 AM
Joined: Oct 2005
Posts: 1,646
Ringtown, Pa.
Dartsport540 Offline OP
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Dartsport540  Offline OP
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Posts: 1,646
Ringtown, Pa.
Originally Posted By Dave Hall
I bought the .500 button in 2003. The telescope part was plastic and one time I left the steering wheel on the dash at Famoso, in hot weather and the thing melted into a "J"! "WhaaaCK!" is the noise it made when you sent it.


That was why I didn't want to order any plastic buttons or switchs.


548 cu. in., Bill Mitchell Aluminum Block, CRT 727 auto trans, Alston Chassis. 8.981et at 149.46 mph. 1.204et - 60 foot, So Far....
Re: Adjustable Transbrake Buttons for Bottom bulb Racing?? [Re: Dartsport540] #2627959
03/02/19 04:25 PM
03/02/19 04:25 PM
Joined: Jan 2008
Posts: 2,363
Cotati, CA
Dave Hall Offline
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Dave Hall  Offline
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Originally Posted By Dartsport540
Originally Posted By A39Coronet
What rpm on the 2 step? Lower it by 600 and try it. $0 change.


I don't know what rpm on 2 step I will be using. When I footbraked it the last 3 years, I staged and left at 2000 Rpm.



That looks like a high quality piece on the shifter like that. Pretty cool! You got it right with leaving low and slow on the rpm with a car that yanks the wheels out of the beams. Flatten out that drive line graph with the shift points and you can't believe the consistency.







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