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Best Launch Technique with Transbrake
I must admit...i am not good at launching with a transbrake with a pro tree.
I understand that practice makes perfect but can someone suggest a good technique I can practice? I have a TE-60 with a 3200 stall. I never seem to be able to build enough boost fast enough to leave with a decent reaction time and a good 60ft. Thanks in advance for the help. RS
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87 GN Best ET so far: Not Fast Enough
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I tried using one of those manual brakes for a couple seasons, and finally threw the piece of crap away. It's great for time trials, etc. but absolutely sucks if you're bracket racing, etc. If you've got an electronic brake, then get in first and early, and be ready. Practice, practice, practice
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TurboDave EWCS(SW) USN Ret Email Us Sevierville, TN TranslatorPro MAFless fuel, spark and boost management 86 GN(TranslatorPro/ExtenderPro on speed density w/boost & fuel pump control,PLX-WB) (original owner) 87 GN (second owner) 84 L69 Z28 (original owner) 01 Excursion LTD 7.3L PSD(Power Stroke Diesel), Turbo, 4X2 08 Honda Accord EX-L, 3.5V6, AT My Photo Gallery |
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Prestage as deep as you can, power brake it to get it over the hump (where the boost really starts to build fast). Hit the transbrake button, release the brakes, and then the car should roll into the staging lights. As soon as you see the amber, release the brake. And like TurboDave said, "practice, practice, practice."
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Kevin Bolger ![]() '87 Turbo T 9.83 @ 138.56 11/3/07 Engine, V1 intercooler and transmission by Extreme Automatics http://extremeautomatics.com/ Also thanks to Kip at Excessive Acceleration #4 in TSM points series for 2007 |
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yep.. i had to practice alot for the PINKS event.. (i freaked the guy out next to me, thats why he jumped LOL)..
you can see the car jumping on and off the trans brake on this video.. i was up on boost (around 20psi launch) and trying to walk the car into the beams.. mvi_0104.avi videos from friends & fun videos on webshots
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![]() SOLD87 GN Anderson Powered.. 9.65 at 140mph in 100* weather... 6.04 at 114 1/8 65* temps, (thats a 9.43 ET in the 1/4 )
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87 GN Best ET so far: Not Fast Enough
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Since my t-brake is the manual type that is controlled from the shifter, you are saying while prestaged, power braking and build boost, put the shifter into low engaging the t-brake, release foot brake and car should move forward enough to stage and then release and hold on? If that is correct, the only problem I see happening is if the car doesn't move forward enough to stage...then what? Thanks for the reply and advise. I really appreciate it. RS
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87 GN Best ET so far: Not Fast Enough
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lol...
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Digital LED Tail lights ![]() 1986 T-Type GNXRay (X-ray clone) White W/black out trim, Grey leather int., LED taillights from InjectionX, H&R engine Mounts, 55lb injectors, G-body parts S.L.I.C, 9.5" (Dusty Bradford) PTC N/LU conv, Trans re-worked by Todd Lyle, Walbro 340, Hot wire kit, RJC powerplate, 3" TH down pipe, ATR 3" Stainless Steel dual exhaust, 4-Adjustable drag shocks, Southside uppers & lowers, Carrilo rods, JE forged pistons, Driveshaft loop, powdercoated & polished GTA rims.. 1986 GN - 6.76 @ 103.8 1/8th - SOLD 1987 WE4 - SOLD |
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Kevin Bolger ![]() '87 Turbo T 9.83 @ 138.56 11/3/07 Engine, V1 intercooler and transmission by Extreme Automatics http://extremeautomatics.com/ Also thanks to Kip at Excessive Acceleration #4 in TSM points series for 2007 |
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best launch transbrake
I was speaking to Brian Hofer about this same thing, lets get this striaght 1. Do burn out in drive make the car shift into second or third. 2. Roll up to line place the trans into manual low watch stage light build boost bump shifter to Drive and make launch when crossing the line bump one more time to overdrive
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What happens to me is...1. do burnout 2. prestage 3. stage 4. slam transbrake down into low gear and try to build boost 5. pro tree drops VERY FAST and I am left at the line trying to build boost and my opponent is 60-100 feet in front. If i bump shifter to drive before green light then i red light. Thanks for the advise.
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87 GN Best ET so far: Not Fast Enough
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You shouldn't even consider racing with a Pro light unless your car is capable of at least low 1.4 60 foots.
Regardless, the answer for a quick launch without embarrassingly being caught at the line trying to boost your shtuff is... nitrous!!! Step up. Everyones doing it now.It may even allow you to take off from just above idle off the foot brake. Making a transbrake unnecessary.
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Donnie Wang 1984 BUICK Grand National with a baaad alcohol and nitrous chaser habit. 100% Methyl Alcohol Injected/Nitrous Oxide Assisted/Forced Inductions FI91X Turbocharged/TA Performance blocked/M&A headed/DRW TH475 Transmission/Neal Chance Racing Converters Pro Mod Torque Converter/Moser Engineering 12 Bolt Rear Axle Housing Warning: Do not try this at home without proper adult supervision. Ultimate Stage I BUICK V6 v3.2 GN details 9.19@145 from a 224 CID 5.73@122.1 in the 1/8 mile. Latest best. 1.28 60 foot. 'Perseverence is the key to innovations endless possibilities and varieties locked within each of us.' |
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Deep staging with a flat footed t-brake launch is the way to achieve the best reaction times. You really need an electronic boost controller with a time delay to avoid overboost on the line.
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Blue GN: Old combo 559whp/706wtq. New buildup to come with race ported GN 1 heads and intake . Black GN:Stock 134k shortblock except cam ,KB 70 mm TB and plenum, ported irons 1.77in 1.5ex, RJC head gaskets, ported stock intake, 212-212 comp roller, 1.65 T&D's, RJC powerplate, 1" plenum spacer, 83 lb/hr injectors, double pumper, FAST XFI, G-Body FMIC, welded ported stock manifolds, 3.5 dp, T66BB GTQ, Dusty PTC 9.5", 200 4-R by me with billet shafted forward drum, input, and planet. 8.5 rear with Auburn and 28 spline Moser axles. Time with old combo 10.88@126mph. Stage II coming soon .WORK HARDER! THOSE ON WELFARE DEPEND ON YOU!
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Am I missing something or is this TE60 something different. Shouldn't a 60 spin up in no time with a 3200 converter. I've ran a TE60 with a stock D5 and it wasn't much worse than a 44/49
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87 GN: .030 TRWs, Stock heads ported & polished, stainless valves, ATR 313 cam, pte54, 55s, Max Effort chip, AC3500nl, v4, SM2 & DS, SMC dual nozzle alky.... |
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I run a manual transbrake. My technique is just as mentioned above. I would PREFER the other guy stage first so I am up on boost as little as possible. I pre stage then creep up a couple more inches(this takes a little practice to get it just right). Then I foot brake it to about 2 psi to get some chassis preload. I then engage the transbrake. For a pro tree I go ahead & increase to my desired launch boost then let off the foot brake, roll into the 2nd beam & release the transbrake as soon as I see yellow. I only hit a pro tree a couple times a year but it usually nets .075-.150 reaction times. If the car doesn't roll into the second beam just let off the gas, disengage the transbrake, footbrake a LITTLE more & do it again. This is the part that takes practice in how far to pre stage & how hard to foot brake it.
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87 gnX clone, girdled 109, j & e's, ported stock heads, atr headers, THDP, te67, 60lb mototrons, precision FMIC and a 2004r trans by Brian. ET 10.16 at 132.21 mph 1.45 60ft. |
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I really appreciate your input. That makes sense but it does seem like it would take some/a lot of practice to get this down. I only race at one event that has a pro tree setup but it has always gotten the best of me. Just to clarify...you prestage, build boost with footbrake then while boost level is achieved, engage t-brake then let off footbrake and that should "bump" you forward to completely stage then once you see yellow..... go? RS
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87 GN Best ET so far: Not Fast Enough
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Prestage, then go a couple more inches, foot brake to a couple psi. engage transbrake. Now go to desired boost(with the transbrake engaged) & let off footbrake when ready. The car should roll from the chassis preload just enough to light the 2nd beam. The part that takes practice is how far to go after you prestage & how much to footbrake before engaging the transbrake. I use the same technique on a standard tree except I only go to 5 psi or so before fully staging, creep in & go to desired boost while the tree starts counting down. I go 1 to 2 tenths after the 3rd yellow.
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87 gnX clone, girdled 109, j & e's, ported stock heads, atr headers, THDP, te67, 60lb mototrons, precision FMIC and a 2004r trans by Brian. ET 10.16 at 132.21 mph 1.45 60ft. |