What is the best way to Launch the Auto Trans

[7thgear]

Originally Posted by feldy

It wont. How do you think its any different then a manual car doing a high rev and dropping the clutch? They sit there and do a burn out in place for a second before taking off. You just cant do burn outs in grid or the pits

after some discussion at my local board, the consensus is that the behaviour exhibited in your video would be brought to the attention of the organizer and a discussion would take place.


what is depicted in the video is not the same as normal slip due to poor traction, you can see that the car is absolutely stationary while the wheels are slipping. You are gaining a benefit of traction by heating up your tires prior to breaking the start beam.


Perhpas at your local autocross this is accepted but please be aware that in other parts it may be brought to the attention of a stewart, esp if your times would put you in a competeteive place.

[feldy]

Well good thing I don't run up north. Are you guys SCCA up there?

Down here I run SCCA Chicago. Scca St.louis SCCA Indy, My local club which is not SCCA. Tri-State in Chicago ect. I have over 400 runs on my personal FRS in the two seasons that I have had it. And 7 different clubs/regions I never once have been protested or talked to. I'm also a active and qualified Safety Steward. I have had a few first places this year alone and a FTDI position no one even batted a eye. If I go to nationals this upcoming season I plan to launch the car the same way. I will tell other auto users. When the fat wide tires in the rear get heat and grip in them launching this way becomes much harder.


Here is more video of the same thing.
[ame="http://www.youtube.com/watch?v=VuoCrp5MZyg"]jeremy 6 23 - YouTube[/ame]

and under the car shots.

[ame="http://www.youtube.com/watch?v=4PToOkNim7I"]KoniYellow RceSprings - YouTube[/ame]


Here is another example of a s2000 launch. Hes roasting the tires before the beam.
[ame="https://www.youtube.com/watch?v=wfS1UltZsTw&feature=mfu_in_order&list=UL"]suspension video.wmv - YouTube[/ame]


Video of a manual BRZ launch. No different then what I'm doing.
[ame="http://www.youtube.com/watch?v=6wcObU6g3Wg#t=14"]TSSCC 8/25/13 838 R Subaru BRZ Kevin - YouTube[/ame]



Your club up north may have different rules then SCCA. but in SCCA the rules are no lighting up the tires in the pits or grids or driving around in circles and what not heating up the tires. What you do at the start line is entirely different.

Originally Posted by 7thgear

after some discussion at my local board, the consensus is that the behaviour exhibited in your video would be brought to the attention of the organizer and a discussion would take place.


what is depicted in the video is not the same as normal slip due to poor traction, you can see that the car is absolutely stationary while the wheels are slipping. You are gaining a benefit of traction by heating up your tires prior to breaking the start beam.


Perhpas at your local autocross this is accepted but please be aware that in other parts it may be brought to the attention of a stewart, esp if your times would put you in a competeteive place.

[7thgear]

um

none of your 2nd videos depict the same thing you did in your first video

all of them have forward motion as they hit the throttle.

watch your own video again

i don't know, maybe it was a one off occurence, but there is a clear difference between your 1st video and the ones you posted after.

We have different events here, both SCCA governed and our own hodge-podge depending.

again, the consensus was it's probably nothing major, but attention would be given to it.


think about it, i noticed it, i wouldn't be talking about it if it wasn't something i was intrigued by. And all i'm saying is that if you were my direct competitor, i would call you on it if it was something you were doing every lap out.

[7thgear]

Originally Posted by feldy

but in SCCA the rules are no lighting up the tires in the pits or grids or driving around in circles and what not heating up the tires. What you do at the start line is entirely different.

So your starting slot isn' part of the grid? Intersting word interpretation.

[feldy]

Originally Posted by 7thgear

So your starting slot isn' part of the grid? Intersting word interpretation.

Correct grid is not the same as the start line. I have yet to see the start line in grid in 3 years of heavy autocross. Grid for us is where the cars just line up and wait there turn. Then they move on to pre-starter then to the start line. Maybe the spaces you run in dont allow for all of that.

Also if you look the surfaces are different in each video. The first video was slippery blacktop. Where the others are concrete. I run rs3s and when cold they spin all day till they get heat. If the surface is cold or slippery it's even more extreme.

[7thgear]

You’re either gridded on the track oryou’re gridded in pit lane.


Anyway, you canargue all you want, but this is what I’m seeing in your first video
a. Car is spinning its wheels

b. Car appears to be “locked” and not in forward motion

A normal car car wouldhave to be on ice, oil, or very dirty/dustry area to exhibit that naturally (orhave a much higher torque to grip coefficient).


Maybe you were thefirst car out that day? Your tires are super cold? I don’t know. Maybe frominside the car you’re not feeling it, but all I’m going off is what I’m seeingin the video. Maybe it doesn’t even look like that in person.

[feldy]

Here is another video.

[ame="http://www.youtube.com/watch?v=DwVh9jizil4"]Decatur 7 14 FTDI - YouTube[/ame]

This event I took FTDI. At the end of the video you can see how far away our grid is from the start line.

This video you can tell the car started to spin the tires in a stationary position. But it was done at the start line and is not against the rules. I'm not arguing with you and you can feel free to protest if we ever ran together its your right.

@Scooby South Whats your take on this? You were a scca rules nazi for years.

[FastWhite]

If you are breaking the rules, not saying you are, then where does this leave all the STI guys who utilize launch control at 4-5000 rpm?
When they launch they spin there wheels, even with race rubber.
ASP, this guy LAUNCHES. Same thing as with the auto.
To me same thing.
But we will leave it up to the official.
The joys of rule interpretation.


Sent from my iPhone using Tapatalk - now Free

[7thgear]

launch control is launch control

if there is even a bit of grip, there will be forward motion

check out these GTR videos

none of them you see "sticking" in one place before launching off, there is instant forward movement.

[ame="http://www.youtube.com/watch?v=oLRo_DK5TkQ&feature=player_detailpage#t=52 "]Nissan GT-R vs Audi R8 V10 1/4 mile - YouTube[/ame]

[ame="http://www.youtube.com/watch?v=35Ah6yNMGK4&feature=player_detailpage#t=73 "]AMS GTR Alpha Omega 2000hp wheelie test passes - YouTube[/ame]

[ame="http://www.youtube.com/watch?v=KlkntXZpOhs&feature=player_detailpage#t=11 3"]2013 Nissan GTR Autocross + Slow Motion Launch! - YouTube[/ame]

[ame="http://www.youtube.com/watch?v=vPvRbpJKSws"]STi Autocross Launch - YouTube[/ame]

here is another neat video of a bunch of slow-motion launches, even the last one you see a mustang peel off, but he doens't "hold" it, the car moves forward instantly

[ame="http://www.youtube.com/watch?v=7zW7dMUuJIw"]Slow Motion Autocross Launches - YouTube[/ame]

[Scooby South]

Originally Posted by feldy

Here is another video.

This event I took FTDI. At the end of the video you can see how far away our grid is from the start line.

This video you can tell the car started to spin the tires in a stationary position. But it was done at the start line and is not against the rules. I'm not arguing with you and you can feel free to protest if we ever ran together its your right.
@Scooby South Whats your take on this? You were a scca rules nazi for years.

no rule against roasting the tires when launching..


sometimes not the fastest way to go..

Bill

[feldy]

Originally Posted by Scooby South

no rule against roasting the tires when launching..


sometimes not the fastest way to go..

Bill

I will agree with that. Saturday it was so cold the tires were spinning from launch till the first element. Lost time. Sunday was warmer and launched much better.

[Eric1855]

Originally Posted by 7thgear

here is another neat video of a bunch of slow-motion launches, even the last one you see a mustang peel off, but he doens't "hold" it, the car moves forward instantly

Woah...small world.

That is my red BRZ there at the start, my buddy Steve made the video.

[Scooby South]

@whataboutbob can chime in as well..


Bill

[whataboutbob]

I have never launched my AT. It is a bit sluggish off the start I'll admit. I just look at as a handicap for my competitors. I'm already beating cars with MTs. Lots of fun when the come up and realize I'm in an AT.