Duramax Diesels Forum Truck of the Week
  #1  
Old 09-10-2014, 08:08 AM
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Default Allison Trans-Brake

I decided to move this over to my SunCoast section to post updates easier.

Our initial testing went great and the Trans brake performed as intended. However, there was a cell. Over the weekend we looked into it a little deeper and came up with the solution. Testing commenced this morning and with much excitement, NO cel!

The last few videos are of the new no cel testing

Truck is a 2005 LLY dually with 24' american force wheels, s475 over stock twin kit, NO fuel mods, EFI live, built trans 1057 converter. Sorry for the focus in the vids but i couldn't find our go pros in time. You can see that i'm easily bringing it up to 2500 RPM and have brought it up to 3100 as well ( all with the 1057).

The TB Valve body we are testing in the videos is a 5 speed, we have a 6 speed built as well and will be testing that this week. We also have a controller coming to test with the VB and if all works well, these might hit the market sooner than expected.

https://www.youtube.com/watch?v=_Y7WwdCoZHE

https://www.youtube.com/watch?v=u8WjBvjstNw

https://www.youtube.com/watch?v=axQ-iMIxQ1w
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Old 09-10-2014, 08:24 AM
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  #3  
Old 09-10-2014, 08:25 AM
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Subd
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Old 09-10-2014, 08:26 AM
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Andrew, could this be done in a truck that wasn't track only? Being that I have no idea what you guys did internally, I just want to know if it will drive normally otherwise.
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Old 09-10-2014, 09:29 AM
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Quote:
Originally Posted by PACougar View Post
Andrew, could this be done in a truck that wasn't track only? Being that I have no idea what you guys did internally, I just want to know if it will drive normally otherwise.
The truck will drive completely normal with the TB VB. The brake is all modifications done to the VB. So to answer your question, you can put it on any truck. Just hope you never hit the switch while you are moving. Your day will go south very quickly
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  #6  
Old 09-10-2014, 08:40 AM
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Also in to learn more.
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Old 09-10-2014, 09:05 AM
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subd this is interesting!!
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Old 09-10-2014, 09:44 AM
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So, your saying it is not like the Powerglide T brakes that need to be in 1st gear to operate Where reverse and 1st gear are forced together and when u release reverse backs off? this can be activated in any gear selection?
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02 Chevy CC/SB 4x4
[COLOR=red]

Motor Build: DeRailed
Bought a 40FT diesel Pusher with a 8.9 Liter Cummins.
everything being sold.
Done :
MA pump rub & DHD TC brace
Total chassis, suspension overhaul with everything new except rear internals.All new brakes, hard and soft lines,UCA's and poly bushings,body bushings
Air bags/ KYB Mono Max shocks
DHD Steering Brace,Rare parts G2 tie rods with self fabbed Idler Gusset.

2012 Chevy Cruze LTZ daily driver
2004 American Coach Tradition 40 FT 8.9 Liter Cummins
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  #9  
Old 09-10-2014, 10:00 AM
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Quote:
Originally Posted by SilveradoTwins02 View Post
So, your saying it is not like the Powerglide T brakes that need to be in 1st gear to operate Where reverse and 1st gear are forced together and when u release reverse backs off? this can be activated in any gear selection?
I'm saying that currently with the revision we are working with you need to be at a Complete stop before activating the brake. This doesn't rule out the possibility of a revision with fail safes in place but it's going to take some time
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  #10  
Old 09-11-2014, 09:55 AM
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Quote:
Originally Posted by 03BadMaxxx View Post
I'm saying that currently with the revision we are working with you need to be at a Complete stop before activating the brake. This doesn't rule out the possibility of a revision with fail safes in place but it's going to take some time
Why not just build a little box that monitors VSS, brake pedal, throttle pedal, and boost?

That would be super super easy to make and provide lots of fail-safes.

You could even incorporate launch control in it...so when certain parameters are met, the box releases the trans brake, and away you go.
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Old 09-17-2014, 08:11 PM
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Quote:
Originally Posted by duratothemax View Post
You could even incorporate launch control in it...so when certain parameters are met, the box releases the trans brake, and away you go.
This would do away with the purpose of the trans brake. You want to let go of the button when you feel it is time to take off, not when the truck thinks you want it to go. A simple push button would work, just mount it somewhere you won't be prone to hitting it on accident.
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  #12  
Old 09-17-2014, 08:43 PM
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Quote:
Originally Posted by dirtracer347 View Post
This would do away with the purpose of the trans brake. You want to let go of the button when you feel it is time to take off, not when the truck thinks you want it to go. A simple push button would work, just mount it somewhere you won't be prone to hitting it on accident.
x2
You would actually want the opposite. If certain parameters are not met it won't engage for the safety factor - no matter what the position of the switch is.
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Old 09-18-2014, 06:25 AM
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Quote:
Originally Posted by dirtracer347 View Post
This would do away with the purpose of the trans brake. You want to let go of the button when you feel it is time to take off, not when the truck thinks you want it to go. A simple push button would work, just mount it somewhere you won't be prone to hitting it on accident.
At the very least, you would need to have some sort of smart box that requires 0 mph and foot brake applied to engage it....
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BT DieselWorks, LLC - EFILive tuning - Duramax/Allison/gasser STANDALONE HARNESSES - Allison lockup controllers - Allison tapshift kits - Digital DSP-5 switches - full assortment of great electronic improvements and gadgets for your GM truck/SUV

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Old 09-10-2014, 09:54 AM
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In for more info as it comes available!
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Old 09-10-2014, 09:56 AM
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