Drag racing automatic launch question.
#1
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Drag racing automatic launch question.
Ok, I know to turn off T/C while at the track...
But, what about over drive?
I ran a 13.5 with overdrive off and a 13.3 with it on.
I have been told to turn off O/D when racing so why the better time with it on?
But, what about over drive?
I ran a 13.5 with overdrive off and a 13.3 with it on.
I have been told to turn off O/D when racing so why the better time with it on?
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Ok... but when I am driving down the street and punch the O/D disable. The engine revs about 500 rpms higher. Almost like a downshift. So I am sure the O/D is not just a 5th gear.
#6
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I hope I can explain this well enough. When you hit the O/D button, two things happen. The torque converter unlocks, and the car shifts out of 5th gear (if it was in 5th when you hit the button). If the car is in any gear but 5th, the converter will still unlock I think, then relock if it feels necessary. That could be the 500rpm raise you see. Or it just shifted out of 5th gear.
The O/D button just disables the overdrive, which is 5th gear.
The O/D button just disables the overdrive, which is 5th gear.
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Oh, I preload the drive train to about 2000 RPM's any more and it breaks loose.
4:10 gears and all that.
I know you can put it in neutral and back into drive to allow the brake pressure to spike, I just seem too busy to do all that when I stage.
4:10 gears and all that.
I know you can put it in neutral and back into drive to allow the brake pressure to spike, I just seem too busy to do all that when I stage.
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Because in an auto you have to brake torque to load the drive train.
With a torqu converter you can get your launch at a higher RPM.
And with a line lock you can ship the brake torque and use the line lock as a launch controller in union with the torque converter.
With a torqu converter you can get your launch at a higher RPM.
And with a line lock you can ship the brake torque and use the line lock as a launch controller in union with the torque converter.