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FrontEngineDragsters.Org Forum
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Technical
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Dan Dishon's Transmission Den
(Moderator:
GlennLever
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Slowing down Transbrake
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Topic: Slowing down Transbrake (Read 5617 times)
BK
Sr. Member
Posts: 310
Your Best Time: 8.45 / 5.30
Your Track: Empire Dagway
Your Vehicle: Late 70's FED
Slowing down Transbrake
«
on:
January 31, 2020, 04:57:32 PM »
Dan,
I run classes were your not allowed a delay box.
I already have an older slower brake in the car but its still not slow enough.
Long through buttons help some but not enough and dont fit well in the cockpit.
I was wondering if you have tried or heard of leaving out reverse springs?
I know there is an odd number of springs.
Do you think it would create a problem cocking the reverse piston in the bore?
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Paul New
Hero Member
Posts: 743
Your Best Time: 6.47 @ 214 MPH SBC
Your Engine: 387" SBC
Your Track: Woodburn Dragstrip
Your Vehicle: 2005 FED
Re: Slowing down Transbrake
«
Reply #1 on:
January 31, 2020, 06:17:07 PM »
Taller front tires may help
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THE FRENCHTOWN FLYER
Sr. Member
Posts: 360
Your Best Time: 8.28@168 door; 9.00@147 6-cyl alt; 8.53@160 RED
Your Engine: 300 Ford six NA w/ crossflow and prod. heads
Your Track: Milan, Thompson
Your Vehicle: (3) Advanced Chassis altered , The Last Logghe altered, '30 RPU
General Location: North Coast
Re: Slowing down Transbrake
«
Reply #2 on:
February 01, 2020, 07:49:46 AM »
I thought of that too, but there's not a lot of options for a FED, especially if you want to maintain "the look". Also lower air pressure can make a difference, even a 5 psi reduction, assuming you're not pulling the wheels up out of the beams.
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dreracecar
Guest
Re: Slowing down Transbrake
«
Reply #3 on:
February 01, 2020, 11:03:02 AM »
50ft spool of wire from the button to the solenoid
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bikeguy307
Full Member
Posts: 241
Re: Slowing down Transbrake
«
Reply #4 on:
February 01, 2020, 05:17:07 PM »
Not sure what springs you have now, but putting weaker springs in will slow it down, I have several customers using stock springs. Also you can orfice the feed hole in the case. Most are drilled at 5/16" you can go as small as 7/32".
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Paul New
Hero Member
Posts: 743
Your Best Time: 6.47 @ 214 MPH SBC
Your Engine: 387" SBC
Your Track: Woodburn Dragstrip
Your Vehicle: 2005 FED
Re: Slowing down Transbrake
«
Reply #5 on:
February 01, 2020, 07:41:17 PM »
Jon Hansen has 19” wheels available and tires for
http://haydenent.com/Pages/TireKenda.html
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AF150
Jr. Member
Posts: 92
The Devil is in the Details
Your Best Time: 7.37 1/4 mile
Your Engine: Early Hemi, 365", Blown Alky
Your Track: Tulsa Raceway Park
Your Vehicle: 200" FED
Re: Slowing down Transbrake
«
Reply #6 on:
February 02, 2020, 08:06:29 AM »
Wire wheels or solid? If wire, do you run a guard ring? Do you stage too deep? Minimum roll out can make things happen real fast.
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MB
wideopen231
Hero Member
Posts: 1911
Your Best Time: 1/8 3.70@ 198 1/4 5.78@245
Your Engine: Hemi 526 ci alcohol
Your Track: Piedmont
Your Vehicle: 225 CMC FED
General Location: NORTH CAROLINA
Re: Slowing down Transbrake
«
Reply #7 on:
June 13, 2020, 04:37:00 AM »
AF150 has very good point.I know with bracket deal you have to stage exact same spot every run or it will be red.I mean 1 or 2 inches makes big difference,especially now days when it take 00- to win most rounds.
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Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot
tcoupekyle
Sr. Member
Posts: 354
Your Best Time: 4.70 1/8
Your Track: Houston Motorsport park
Your Vehicle: 225" slip joint FED
General Location: Houston
Re: Slowing down Transbrake
«
Reply #8 on:
September 07, 2021, 04:14:37 PM »
One thing I’ve done to slow down the TB is wire a relay in between the button and the brake.
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THE FRENCHTOWN FLYER
Sr. Member
Posts: 360
Your Best Time: 8.28@168 door; 9.00@147 6-cyl alt; 8.53@160 RED
Your Engine: 300 Ford six NA w/ crossflow and prod. heads
Your Track: Milan, Thompson
Your Vehicle: (3) Advanced Chassis altered , The Last Logghe altered, '30 RPU
General Location: North Coast
Re: Slowing down Transbrake
«
Reply #9 on:
September 07, 2021, 07:56:25 PM »
OK.
I'll divulge one of my little techniques I developed to keep from going red when bottom bulb racing without a box.
I two-count each bulb. Or three-count it if I'm still too early.
Like this, for each yellow:
2-1
2-1
2-
1
!
and release on the last
1
.
If still too early try a three-count.
3-2-1
3-2-1
3-2-
1
!
I've been doing this for decades. It takes a little practice to get good (what doesn't?) but its cheaper than mechanical changes and easier to revert back when using the box.
You're welcome.
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FrontEngineDragsters.Org Forum
»
Technical
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Dan Dishon's Transmission Den
(Moderator:
GlennLever
) »
Slowing down Transbrake