Bracket Talk
Need to slow down footbrake reaction time
August 29, 2022, 05:41 AM
HolytownNeed to slow down footbrake reaction time
Was consistently 55-75 red. Car has 27" tall tires on front at 24 PSI, and 32" on the rear all the way down to 8 PSI. Leaving at 1800-2000 RPM.
I know larger tires would slow the reaction some, but I don't see it getting rid of more than 20 numbers.
Any ideas on how to get rid of about 70 in the reaction? I can try to go down to 1500 leave, but might be getting into the Stumble zone.
August 29, 2022, 06:33 AM
CURTIS REEDI don't believe -.055 to -.075 is a car reaction issue that you can work out. It's a following the tree issue that needs to have the driver fixed. JMO
____________________________
2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion
2018 Div4 Goodguys Hammer award winner
August 29, 2022, 06:51 AM
HolytownYou are probably correct. I definitely don't claim to know what I'm doing foot braking.
Its just Odd to me that I am anticipating the tree within that close of a range. That range was 6 out of 9 test and tune runs.
August 29, 2022, 07:35 AM
qtrrcrLed or incandescent tree? When we still had incandescent bulbs, I was leaving when i saw yellow, was always red. I had to wait til bulb was fully lit, then I had .030/.035 lights. When the track switched to LED and I was leaving the same way, I was always late. I had to switch back to leaving as soon as I thought I see yellow. I even tried to block out the first two bulbs and concentrate on just the bottom bulb. That didnt work as well as reacting to the light coming on by following the tree.
August 29, 2022, 07:36 AM
HolytownI feel like I'm reacting to the Flash of the LED
August 29, 2022, 08:48 AM
442OLDSHave you tried using a blinder?
August 29, 2022, 08:55 AM
BP758quote:
Originally posted by Holytown:
I feel like I'm reacting to the Flash of the LED
Possibly a dark visor?
We’ve seen peoples head react to an LED brightness.
Raceless in California!
August 29, 2022, 09:53 AM
Eman.055-.075 red? No way you're going to tune the car for that unless you create a stumble. blocking the tree might help as it slows down some and would stop you from counting or possibly anticipating.
August 29, 2022, 10:53 AM
BP758Lengthened my brake pedal.
Raceless in California!
August 29, 2022, 11:34 AM
1320racerquote:
Originally posted by Holytown:
Was consistently 55-75 red.
That’s ALL you!
August 29, 2022, 11:48 AM
markemark^^^^^^^^^^^^ AGREED
You won’t be going red using a blinder to view only the bottom bulb. Works best during daylight hours, but I have used mine at night at tracks that have the tree well lighted.
If you have a practice tree put an activation switch from the pedal to the tree. Set the R.O. so you’re 050 red , then practice going green with that setting.
If none of the above help, push (much) harder on the brake pedal. Doing this with a practice tree will show it slows your RT.
August 29, 2022, 11:54 AM
Holytownquote:
Originally posted by markemark:
^^^^^^^^^^^^ AGREED
You won’t be going red using a blinder to view only the bottom bulb. Works best during daylight hours, but I have used mine at night at tracks that have the tree well lighted.
If you have a practice tree put an activation switch from the pedal to the tree. Set the R.O. so you’re 050 red , then practice going green with that setting.
If none of the above help, push (much) harder on the brake pedal. Doing this with a practice tree will show it slows your RT.
Thanks, I will try all of this.
August 29, 2022, 02:31 PM
B KINGquote:
Originally posted by markemark:
^^^^^^^^^^^^ AGREED
You won’t be going red using a blinder to view only the bottom bulb. Works best during daylight hours, but I have used mine at night at tracks that have the tree well lighted.
If you have a practice tree put an activation switch from the pedal to the tree. Set the R.O. so you’re 050 red , then practice going green with that setting.
If none of the above help, push (much) harder on the brake pedal. Doing this with a practice tree will show it slows your RT.
X2
Plus, many....many moons ago we used a brake pressure gauge also!
1980 Camaro
Taking the Best Working Small Tire Shyt Box & making it Greater Than Before!
3000 lbs.
Pump Gas 436
August 29, 2022, 03:38 PM
THE HAMMERShallow stage your car on a .500 pro tree,and see what your real car-you reaction time is.You will find out your anticipating the last amber watching the tree on the full tree.I blind the tree ,have 1.55 60fts with trans brake 4,200 stall with 3.42 gears cuts low .5 lights .Dont know 60 ft. times you have ,but ft. braking the car leaves a tad slower than trans brake car.
HAMMER.
August 29, 2022, 04:59 PM
imakehpdrink
.
Dave
F J B
August 29, 2022, 11:44 PM
Tom396Wish I could help, but I am really old school. I would simply wait longer. Take care. Tom Worthington
If it seems that bracket racing has gotten too expensive for you, maybe you are just doing it wrong.
September 01, 2022, 02:17 PM
GoobLooser (lots) converter, more suspension travel, swap foot from brake to throttle.
"Despite the high cost of living, it remains popular."
Dave Cook
N375