1.4 60' time?
10-20-2004, 08:53 AM
#13
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at our kansas meet, one of the silverado SS owners did a burnout using the waterbox. roll through, stop on the dry, let'r fly (also used the 150 shot for the burnout). all 4 smoked and it pushed him through the beams, but it sure was cool. using the water a burnout would be easy with your truck.
i also think your 60' should make 1.5's easy and 1.4's should be very possible.
i also think your 60' should make 1.5's easy and 1.4's should be very possible.
10-20-2004, 10:03 AM
#14
Jim, I know that some of the fast (i.e. 9 second) Sy/Ty guys switched over to RWD. Some of it I'm sure is due to parts failure, but the big advantage is being able to run drag-style suspension setups and get good short times.
Is a 1.6x the limit of your setup? There will be a point that you just can't hook anymore. Will Caltracs make the front end unload at launch?
I hate having more questions that answers. I just hope you haven't reached the limit of your suspension setup. Prove me wrong.
Is a 1.6x the limit of your setup? There will be a point that you just can't hook anymore. Will Caltracs make the front end unload at launch?
I hate having more questions that answers. I just hope you haven't reached the limit of your suspension setup. Prove me wrong.
10-20-2004, 10:07 AM
#15
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Originally Posted by Scream
Jim, I know that some of the fast (i.e. 9 second) Sy/Ty guys switched over to RWD. Some of it I'm sure is due to parts failure, but the big advantage is being able to run drag-style suspension setups and get good short times.
Is a 1.6x the limit of your setup? There will be a point that you just can't hook anymore. Will Caltracs make the front end unload at launch?
I hate having more questions that answers. I just hope you haven't reached the limit of your suspension setup. Prove me wrong.
Is a 1.6x the limit of your setup? There will be a point that you just can't hook anymore. Will Caltracs make the front end unload at launch?
I hate having more questions that answers. I just hope you haven't reached the limit of your suspension setup. Prove me wrong.
10-20-2004, 04:26 PM
#16
i am geting my plan from the sy/ty guys. there are several of them pulling 1.4's with their trucks. there is a way to adjust the caltac's so they dont provide a lot of front end lift, just use them to keep the rear from twisting and rolling up under the truck. the front end suspension limiters are nothing more than some type of cable or bump stop that keeps the front from lifting(suspension from droping).
here is how the problem was explained to me. when the truck launches the front lifts a lot. with the suspension droping so far down it is way out of alighnment, the tires are towed in and the camber is way off. both of these things effect the contact patch. then there is also the fact that the parts(steering and driveline) are much stronger when kept paralelle rather than a sharp angle downward. the steering will be less likely flex helping the tirs stay in alighnment better
so, keep the truck flat, keep the tires all flat and stable. keep the best contact patch i can and not worry about weight transfer. use some stickier tires too. i am 99% sure i can cut consistant 1.5x 60' times but pulling a 10sec run would be much easier with some 1.4's
seems like my mph would have to be in the 130's to get a 9sec run.
here is how the problem was explained to me. when the truck launches the front lifts a lot. with the suspension droping so far down it is way out of alighnment, the tires are towed in and the camber is way off. both of these things effect the contact patch. then there is also the fact that the parts(steering and driveline) are much stronger when kept paralelle rather than a sharp angle downward. the steering will be less likely flex helping the tirs stay in alighnment better
so, keep the truck flat, keep the tires all flat and stable. keep the best contact patch i can and not worry about weight transfer. use some stickier tires too. i am 99% sure i can cut consistant 1.5x 60' times but pulling a 10sec run would be much easier with some 1.4's
seems like my mph would have to be in the 130's to get a 9sec run.
10-20-2004, 04:53 PM
#18
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sounds sick Jim. Definatly get the 4 wheel burnout on video!!
my truck is a 2wd, and even with caltracs its hard to get under a 1.9 with slicks, launching with a 150 shot. Im only using 27"tall slicks, and 3.42's
Keep up the good work!
my truck is a 2wd, and even with caltracs its hard to get under a 1.9 with slicks, launching with a 150 shot. Im only using 27"tall slicks, and 3.42's
Keep up the good work!
10-20-2004, 04:57 PM
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Sounds like a plan Jim....
Remember when we also talked about a firmer shock for the rear to reduce squat also. Do they mention anything about that on those trucks? Or would you have to use a heavier spring rate?
Remember when we also talked about a firmer shock for the rear to reduce squat also. Do they mention anything about that on those trucks? Or would you have to use a heavier spring rate?
10-20-2004, 05:00 PM
#20
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Originally Posted by parish8
i am geting my plan from the sy/ty guys. there are several of them pulling 1.4's with their trucks. there is a way to adjust the caltac's so they dont provide a lot of front end lift, just use them to keep the rear from twisting and rolling up under the truck. the front end suspension limiters are nothing more than some type of cable or bump stop that keeps the front from lifting(suspension from droping).
here is how the problem was explained to me. when the truck launches the front lifts a lot. with the suspension droping so far down it is way out of alighnment, the tires are towed in and the camber is way off. both of these things effect the contact patch. then there is also the fact that the parts(steering and driveline) are much stronger when kept paralelle rather than a sharp angle downward. the steering will be less likely flex helping the tirs stay in alighnment better
so, keep the truck flat, keep the tires all flat and stable. keep the best contact patch i can and not worry about weight transfer. use some stickier tires too. i am 99% sure i can cut consistant 1.5x 60' times but pulling a 10sec run would be much easier with some 1.4's
seems like my mph would have to be in the 130's to get a 9sec run.
here is how the problem was explained to me. when the truck launches the front lifts a lot. with the suspension droping so far down it is way out of alighnment, the tires are towed in and the camber is way off. both of these things effect the contact patch. then there is also the fact that the parts(steering and driveline) are much stronger when kept paralelle rather than a sharp angle downward. the steering will be less likely flex helping the tirs stay in alighnment better
so, keep the truck flat, keep the tires all flat and stable. keep the best contact patch i can and not worry about weight transfer. use some stickier tires too. i am 99% sure i can cut consistant 1.5x 60' times but pulling a 10sec run would be much easier with some 1.4's
seems like my mph would have to be in the 130's to get a 9sec run.
You could crank the compression damping on the rear, and the rebound damping in the front. I wonder if that would help?