Has anybody ever tried launching from 2nd? I'm thinking maybe some TC/SC guys have tried it launching on street tires... what were the results?

 

I've always thought you should try it, if you haven't already. Since you always claim to not ever have traction in 1st....

I know Cobras that do it with no problem.

 

I know I should have tried it, but for some reason I've always been a big wuss about it, thought it would be too hard on the axles, would bog, not enough power, etc

And is it that hard to believe I don't have traction in 1st? 1st is short enough to give you traction problems on an almost stock car.

I was thinking something like a 3500 dump in 2nd could be good

Gonna have to wait till April to find out. Damn snow.

Meantime, someone is BOUND to have tried it. Anyone that's boosted ought to have given it a shot. Even in 2nd it's probably very hard for a turbo car to get any traction.

With some small @ss tires maybe?

 

wow..i'm no expert, but i don't see how that would be any good for your clutch...or axles...or tranny...

But I wish i had a beater to test it on.

 

Well I calculated that a Grand Prix GTP's first gear almost goes to what our second goes to, and those are one of the better torquey FWD launchers...

 

And how many gears do they have?

 

5











with reverse

 

well, keep in mind they have 4 gears, and a supercharger...something like 280 crank torque stock, so they wouldnt really have a problem winding out that 1st gear. I would look at the individual gear ratios of the 2 cars, or just go out and buy a beater and launhc the hell out of second for the sake of science.

 

Well if I don't have 280 crank torque, it's not far off. 700 lbs less too.

Left=GTP Right=Me
http://fatboyraceworks.com/gears/ind...raph&Compare=1

What diff does it make that they have 4 gears? My point is 1st = my 2nd, roughly. Strictly for the launch. I assumed same tires/rev limit for the sake of comparing both.

 

launching in 2nd gear would be pretty rough on the clutch but seems like itd help out your time if you do it right. some1's gotta try this one out.

 

The self-proclaimed guinea pig

Did some google and it looks like some of the higher power RSX-S like to start in second gear. Same with quite a few Hondas.

Stock LS1 6-speed F-bodies have a 2.66 1st gear with a 3.42 stock rear end, which is roughly the equivalent of what my 2nd will be, taking into account my smaller diameter tires. If everything goes well I should have a similar weight/Torque ratio to a stock 98+ f-body next year so yeah now I'm psyched to try it.

 

hondas do it? i would think that a 16.5 second car would have serious power issues launching from second. must have some goodies on there.

 

Now we have to wait and see ...

Hurry up and wait.

 

Dude, I'm not talking about stock civics. Point I'm making is that Hondas have similar problems with super short first gears that we have.

 

I'm gonna run out and try it in 15-inches of snow

www.sanairracing.com

Schedule for one of my local tracks. Notice how it opens late April. So when we get there, you can start reminding me that I'm all talk and no action. Until then though...

 

I've thought about it but never had any reason or chance to yet. Maybe in the spring.

 

I'm personally just looking for a reason to be able to race on street tires most of the time. One less shift + more consistant launches = better chances of winining when bracket racing. Some drag cars use 2-speed transmissions because of this.

 

or you could just buy slicks right?

 

He's got (or had) slicks. He doesn't want to change tires at the track, or maybe the class he's running brackets in doesn't allow them.

 

1) Slicks carry a 150 lbs weight penalty in heads up super street all motor. My car will be too light to meet the minimum weight next year.

2) Slicks rape your transmission and axles.

3) I race way too often to put slicks on all the time.

4) I'm lazy.

5) Street tires have less parasitic loss and drag after the launch. This, coupled with shifting 2 times instead of 3, should close the gap between my times on slicks and street tires to the point where it's almost not worth it to run slicks to run just a little faster.

6) I want the car to be in 100% street configuration when I race. If it's a 12-second car at the track, it's a 12-second car all the time.

7) We're talking about 1000$+cnd easy for 2 slicks and a wide pair of really light wheels.

8) Reaction times are better and more consistant on street tires.

9) Way too many guys told me I'll never get an N/A FWD on real street tires in the 12s. I unfortunately took it upon myself to make these guys look like total tards next year.

10) Beating slicked, RWD stangs on sawblades and all-seasons = priceless and downright embarassing for them. I promise some videos next year. It's really funny.

 

Oh, and I haven't forgotten this, Neal

13.10 is the ET to beat in 2006.

 

I will try to beat 13.10 on street tires next year then too.

 

Infact I wonder who has the fastest pure street tire pass? No DRs or ET streets or similar tires, but real honest to god street tires.

 

I have never heard of a maxima in the 12s on street tires. Mardi could do it easy I assume.

And yes, I hate it when people say they ran on street tires when they actually used drag radials. DOT or not, street tires are street tires, and drag radials are just that, drag radials. In my book anyway.

 

how does an r-compound tire differ from a drag radial or a normal street tire?

 

I was thinking I might have the quickest street tire time, then I remembered hal went 12s on street tires back in the day with his old setup, 12.7 @ 119. I've got it on video. I'll dig it up later if you'd like to see it, I'm heading to bed now. Gotta be down at the shop early tomorrow morning. Short week means more hours before thursday

 

Nice. Whenever you have time.

 

R comps have a stiff sidewall for improved cornering, exactly the opposite of what you want in a drag tire. Some people run them as a pseudo-drag radial if they have some laying around, but they aren't as good as DRs, which are in turn not as good as slicks.

 

...which is why I use the OEM tires that came with the car. These ***** have a fat, soft sidewall. Unfortunately they only put down 6.3" of contact patch on the ground

 

i thought mardi went 12 on street tires sometime in september??

 

Maybe he did. I am very good at remembering peoples track times (ones worth remembering anyways) but I don't recall that.

 

Mardi went 13.4 on streets babying it but his car has more than enough power for a 12.

 

i see. i read that thread just a few ago and it says he was on M&H slicks... my bad.

 

i thought sr20den launched in 2nd... maybe not?

 

Considering his power and F/D, it makes sense.

 

Nope.

Oy. His 60' was 1.94. I highly doubt an NA max could pull a 1.9 launching in second.

 

yes iam ditching the slicks i bought never really used them. Still have nubs on them.And i hate the way the feel.

and with the DR's not being street tires i cant agree with that.I put 7-8k on a set drove in thunderstorms and back and forth to work every day.and went to the track with steel belts showing thru and busted a 13.35 with a near 2.1 60ft not very good .my new rule is if you can beat my 60ft time best i got with my DR than your tire is not a street tire also

 

neal...didn't Hal run a low or mid 12 on street tires b4 he sold the car to you....

 

I don't know, like I said 12.7 is the fastest I know of him running on street tires. Maybe he did but he never told me.

 

I don't get that reasoning I have more than a dozen runs in the 2.0's, including a 2.03 and a 2.02, and my tires are as "street" as you can get. Hell, they came with the car, they are the stock OEM tires that came on 1995 SE maximas from the factory.

Here is a pic from Tirerack;



You can't get any more streetable than that. They are rated at like 80,000 miles threadwear.