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Old 08-22-2010, 08:38 PM
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Default video of my car launching

let me know wut you think and wut i can do to get the 60ft down
am leving off the trans brake 3800rpm 5.5psi and its 60ft 1.62
i have afco da on it its set up 16 bottom form all the way lose and
top is 8 from all the way lose next time out am going to try 4000 rpm
8psi should i do anything with the shock seting befor i try it thx
http://s778.photobucket.com/albums/y...t=MOV03151.mp4
Old 08-23-2010, 07:19 AM
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Make 1 change at a time, make a log of all pertinent info, including weather, etc.
For a baseline, I'd suggest you set the shocks at mid point, and work from there.
Some better vids from the side, will allow a look at how the tires are working...
Old 08-23-2010, 07:38 AM
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Just assuming it was late in the evening on the 21st, 10-11 PM, based on the altitude of the track at 672 feet, humidity levels in the 60s, temperature about 63, barometric pressure at 29.85 (ish) this leads to about a 1333 density altitude. Not bad.
Old 08-23-2010, 08:37 AM
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that's the seting on the shocks that madman told me to strat with and seemed to work good and that's is on the 21st about 11:30 it was humdity seemed high but the car did run good its a 3800lb car also
Old 08-24-2010, 08:10 AM
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Originally Posted by Old Geezer
Make 1 change at a time, make a log of all pertinent info, including weather, etc.
For a baseline, I'd suggest you set the shocks at mid point, and work from there.
Some better vids from the side, will allow a look at how the tires are working...
I completely agree with this. Madman is awesome and can definitly ball park you better then most people here, over the internet. BUT you wont know what the car is doing until you try something different and basically its one adjustment at a time.

Also like said, a rear/side view of the tire is optimal. IF you can get some white tape and mark the tire and you will definitly know if it is spinning or actually sticking as the Tape would spin faster and then slow back down and thatn would indicate where your spinning be it from the line to the 60' foot, or if you hook and then unload.
Old 08-24-2010, 08:29 AM
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What converter are you running and what gear? Don't touch the suspension just yet. Do like the others said see if you are spinning and get a side video. If you are not spinning then you need to up the boost or check your converter to get that hit you need to pop the car off the line and bring your 60ft down. Try just the boost change after you make sure you are not spinning.
Old 08-24-2010, 09:47 AM
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what did it run? whats the 1/8 as well?
Old 08-24-2010, 10:10 AM
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ok ill diff find out if am spining 1st by puting the tap on it and it has a custom built mike ridding coverter and a 3.73 gear in a D60 the car ran 9.90 at 140mpr
Old 08-24-2010, 10:12 AM
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ok ill diff find out if am spining 1st by puting the tap on it and it has a custom built mike ridding coverter and a 3.73 gear in a D60 the car ran 9.90 at 140mpr not sure on 1/8 ill have to go back and look
Old 08-25-2010, 06:27 PM
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15" rims 28" tires and more BOOOST! Youll go faster! lol
Old 08-25-2010, 07:06 PM
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Interesting launch...it really loads up and almost looks like it creeps a little when you stall it up...but then just doesn't take off.
Old 08-25-2010, 07:31 PM
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will its only making 5.5 up intel 60ft than the 2nd stage comes on and it hits high boost and am not sure wut you mean by (creeps) and its the only tire setup i got lol
Old 08-25-2010, 07:36 PM
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here one more video i got from that night this is at 3500rpm 4.5 psi

http://s778.photobucket.com/albums/y...nt=1033138.mp4
Old 08-25-2010, 08:59 PM
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The car "creeps" meaning that it moves forward slightly...literally "creeping forward." It shouldn't do that on the transbrake.
Old 08-25-2010, 09:45 PM
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am perrty sure its not creeping wut I do is foot brake 2step and than trans brake 3step and when I let the foot brake go the car rocks a lil but that's it and I keep looking over the video and I don't see the tires move at all
Old 08-25-2010, 11:14 PM
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The body of the car kinda hunker'd down which made it look like it moved forward.
Old 08-25-2010, 11:21 PM
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The car definitely rocks forward in the first video. It doesn't clip the beams, but it rocks forward. It may be a null point in this thread, but every inch you move forward in prestage will hurt your 60' time.
Old 08-26-2010, 06:44 AM
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o ok yea when I see a lot of cars that foot brake 2step to build boost than trans brake the cars rock like that but only if you let the foot brake go I see it on the heads ups DR cars all the time so I figerd it was no big deal
Old 08-27-2010, 04:19 AM
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first off your preloading that rear suspension way too much so the split second after you let off the trans brake before the power reaches the back the suspension is unloading slightly then loading again and secondly i cant really tell from the video but im not seeing any tire spin and you want a little tire spin. hope this helps. -tony-
Old 08-27-2010, 06:42 AM
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so by me footbrakeing it am preloading the susp to much any was around this and still build boost
thx for all the help



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