[Trizzle]

Howdy folks.

2016 Charger.

Motor and transmission are stock

Running ET Street R on beadlocks

Viking double adjustable out back, stock up front, and HHP's "Demon springs".

Im trying to learn how to launch this vehicle and cut a consistent 60ft. Im all over the place and havent really changed much of anything. I run 22psi in the tires and have set the rear shocks to 13 C and 13 R to get the car to stand up on the tires. Whats a good starting point to build off of to get something somewhat consistent? Track prep is alright usually. I can get 1.68-1.72 60fts every now and then. If there are any articles or videos to explain how to tune this suspension and tire to get a better 60ft im all ears.

 

[fumanchu182]

Whats it like leaving from idle?
Whats it like power brake up to 1k rpm, 1500 etc?
Does the track prep for radials, slick? What track?

 

[Trizzle]

Whats it like leaving from idle?
Whats it like power brake up to 1k rpm, 1500 etc?
Does the track prep for radials, slick? What track?

Track prep is fairly good for the radials i run if i warm them up properly. I dont know what they prep it for specifically. I know a lot of the guys local to the track run slicks from what i see. I foot brake up to 14xx rpms and launch from there.

 

[Jonx96]

Are you stock or tuned? The tune can affect best launch rpm. But you should be in the 1.5x range if stock. Are you spinning? Hopping? Or neither and just not getting out of the hole fast enough?

 

[Jonx96]

As far as the Viking shocks I will be no help. I am cutting low 1.3s on the stock shocks and springs

 

[797rdeye]

when i first got my 315 50r 17 , i went to atco in nj. drove there from li 3hrs plus. on the pzeros. changed tires in pit, #5 to start the day on line. was a nice cool day, track prep was great when i got there. had the tires at17lbs approx, avoided the water, did small burn out before the line. all in track mode,foot braked to 1300 to 1500, then to the floor.it squated bit down and that was the best run of the day.all stosk no tune no springs or shocks. p4 rear end brace and a saftey loop.thats it. on a half tank of 93 oct. by the time came for the second run the line was all the way around the whole parking lot.and alot of other classes were going first. with no extra track prep, that i could see ,did the same procedure but this time i spun a little at launch and ran a 10.7 same mph130.just goes to show how important your 60ft is in your et. hope this helped

 

[Trizzle]

Are you stock or tuned? The tune can affect best launch rpm. But you should be in the 1.5x range if stock. Are you spinning? Hopping? Or neither and just not getting out of the hole fast enough?

Tuned. Still dialing it in with MS109

 

[Barbell_Cat_717]

Find what works best with your car and that comes with several runs down the track and a lot of practice. Play with different launch techniques and take note of your time slips to compare and see which run gave you the best time and what you did exactly during that run.

My Cat is bone stock and have only ran 17 MT street R's at the track at 20 psi. No modifications to the car like springs, suspension upgrades etc.

My best 60's came from foot braking it up to 2k rpms and holding that for a good few seconds and launch.

I've done it all... leaving at idle, leaving at different rpm launches, different tire psi, etc. In good DA I was consistently getting 1.5 60's as this launch technique worked best for me.

I was very consistent showing up to the track every consecutive week at Test n Tunes. I've even practiced a bit on some backroads to try and master the car as best I can. Op, just keep practicing and showing up at the track often playing with different techniques and see what works for your car.

There's only so much we can do to modify the cars this or that, when practicing launching the car often to see how it responds is one of the best ways to do first. Find the perfect technique for your car and execute that every run.

 

[juanagofast]

Track prep is fairly good for the radials i run if i warm them up properly. I dont know what they prep it for specifically. I know a lot of the guys local to the track run slicks from what i see. I foot brake up to 14xx rpms and launch from there.

What track?

 

[drive_55_not]

rear shocks to 13 C

13 seems a little stiff on the compression. I have Vikings on my Mustang, using 5C / 12R and cut 1,4xx 60's with a T56 and the 17" Hoosier slicks.

Best thing to do is either mount a Go Pro on the fender or have someone film your launches so you can see what the car looks like on the hit.

Like Jon posted, you should cut 1,55 60's with stock suspension, I even cut a couple 1,53x with a 'Little' 275/50-17 M&H DS after installing the Wiles DS.

.

 

[Jonx96]

Tuned. Still dialing it in with MS109

I'd talk to your tuner see what they can do to help you launch.
My last car I spent a lot of time on the launch and the tune. Took a lot of days at the track.

 

[Trizzle]

I'd talk to your tuner see what they can do to help you launch.
My last car I spent a lot of time on the launch and the tune. Took a lot of days at the track.

We are messing with the tune. Ive only have one revision so far. Juggling kids, wifes work, and my own stuff i get to the track as often as possible.

13 seems a little stiff on the compression. I have Vikings on my Mustang, using 5C / 12R and cut 1,4xx 60's with a T56 and the 17" Hoosier slicks.

Best thing to do is either mount a Go Pro on the fender or have someone film your launches so you can see what the car looks like on the hit.

Like Jon posted, you should cut 1,55 60's with stock suspension, I even cut a couple 1,53x with a 'Little' 275/50-17 M&H DS after installing the Wiles DS.

.

I know its a different vehicle all together but i just went off what i was doing with my truck. Thinking about it now, i just needed every bit of weight on those tires to stick. I think i ran 17/17 on that vehicle to get a 1.8x in a NA 5000lb 4x4. Ill mess with the settings a bit to get the car to lean back more.

 

[Trizzle]

What track?

Onawa Dragway in Onawa , IA

 

[HC5120]

I'd try like 17 psi cold and go up from there. I ran 16.5 cold at my track last weekend (1.66 60' at 6300 DA) and that was still too much at my track. A lot depends on the track and DA. I am going to start at 15 psi cold next time out.

Tire pressure would be simple to experiment with. And like someone else said, have someone video your launch so you can see what the car is doing, and then you will have an idea on the shocks. 1 to 1.5 pounds of pressure can make a significant difference.

I'd work the tire pressure and shock settings before messing with the tune, imho.

 

[Linda's Hell Cat]

Howdy folks.

2016 Charger.

Motor and transmission are stock

Running ET Street R on beadlocks

Viking double adjustable out back, stock up front, and HHP's "Demon springs".

Im trying to learn how to launch this vehicle and cut a consistent 60ft. Im all over the place and haven't really changed much of anything. I run 22psi in the tires and have set the rear shocks to 13 C and 13 R to get the car to stand up on the tires. Whats a good starting point to build off of to get something somewhat consistent? Track prep is alright usually. I can get 1.68-1.72 60fts every now and then. If there are any articles or videos to explain how to tune this suspension and tire to get a better 60ft im all ears.

I cut 1.5 while stock and it took a lot of seat time. It has always been hard for me to be consist ant because for the T&T and R&D of parts and Tuning were changing every week. Then my life changed RIP my Husband @Top Cat and then Covid. My Hellcat is %100 street legal now ( I have only been at the track 1 time this year But I was able to still cut a 1.4 9.8. I know I will do better with seat time and be back into the 1.3s

I think your RPMs are too much first off. Go Lower....like just enough that you know some fuel is going through. Launching is a seat time thing to be finessing and understanding the Hook feeling. The hook feeling happens in like a 1 second and then you can smash it to the floor!

You have too much PSI in your tires. I have 18's for wheels+ 309 gears it's a good combo! Sometimes I go as low as 16.5 psi. @HC5120 is giving you good advice.

Consistency is going to be all you. The back end of your hellcat is and you have been modifying important. Hemis throw a lot of torque to the back. It's working the Power to the Ground.

What size are your wheels?

Where are you from sea level, that's makes a huge difference too for the advice we are giving.

Linda

 

[Trizzle]

I cut 1.5 while stock and it took a lot of seat time. It has always been hard for me to be consist ant because for the T&T and R&D of parts and Tuning were changing every week. Then my life changed RIP my Husband @Top Cat and then Covid. My Hellcat is %100 street legal now ( I have only been at the track 1 time this year But I was able to still cut a 1.4 9.8. I know I will do better with seat time and be back into the 1.3s

I think your RPMs are too much first off. Go Lower....like just enough that you know some fuel is going through. Launching is a seat time thing to be finessing and understanding the Hook feeling. The hook feeling happens in like a 1 second and then you can smash it to the floor!

You have too much PSI in your tires. I have 18's for wheels+ 309 gears it's a good combo! Sometimes I go as low as 16.5 psi. @HC5120 is giving you good advice.

Consistency is going to be all you. The back end of your hellcat is and you have been modifying important. Hemis throw a lot of torque to the back. It's working the Power to the Ground.

What size are your wheels?

Where are you from sea level, that's makes a huge difference too for the advice we are giving.

Linda

DA in the summer hovers around 3000. Im using a 305 45 17 on 17x10 beadlocks.

 

[SickToo]