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-   -   What will it take to get my car to pull 1.5+ lateral G's (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/what-will-take-get-my-car-pull-1-5-lateral-gs-345409/)

xfeastonarsex 09-04-04 07:04 PM

What will it take to get my car to pull 1.5+ lateral G's
 
If thats possible, if it is then make the number 2ish :D

chris_stampe 09-04-04 07:17 PM

no 1 g is like freefalling....9.8m/s2

Sir Rupert Hobo 09-04-04 07:18 PM

i would first try to reach the 1.0g:D

xfeastonarsex 09-04-04 07:24 PM

well the car can pull a .92 now right?

bingoboy 09-04-04 07:35 PM

superstickies, massive downforce, wider stance, dropped to the ground, stiff as all hell.

sub9lulu 09-04-04 09:24 PM

is that even possible ?

Kenteth 09-04-04 09:40 PM


Originally Posted by chris_stampe
no 1 g is like freefalling....9.8m/s2

Hey chris, ever get the ecu tuned yet?

Scott 89t2 09-04-04 10:28 PM

go buy a racing go cart.... it'll pull like 3 and cost alot less then trying to make your car do 1.5 LOL

Madrx7racer 09-04-04 10:33 PM

rubber cement on the ground.........

torean 09-04-04 11:29 PM

hahaha.....why?.....

drago86 09-05-04 02:00 AM

Downforce and high speeds or

Super wide super sticky tires,.. like out way beyond the fenders,.. rubber has the unique property that the less force applied to it the higher its coeficient of friction appears to be,..

andrew lohaus 09-05-04 02:11 AM

getting a fc to 1.0g is enough of a task. i doubt 1.5 would even be possible without SOO much modification that you couldnt even call it an FC anymore.

serriously. NO street car pulls more than like 1.1g (thats a VERY rareified set too)

not gona happen without slicks and REDICULOUS levels of modification, if at all.

why do people just pull these questons out of their ass, like their the first to ever want to pull more than 1.0g, or that THEY discovered the magic secret to make their car faster than an enzo AND on a budget comprised soley of their lunch money.......

people, get a grip on reality!!!!

maverick2.0 09-05-04 02:18 AM

Shit all i can say is if you wanna pull g's go get on an airplane....or strap a jet engine to your car........Why you wanna screw up a perfectly good rx anyway,...

NZConvertible 09-05-04 02:30 AM

Why are you even interested in this acedemic number, especially such a high one? It has little to no relevance in street driving anyway, since you'll most likely never corner on a surface and smooth and flat as a skidpan. High lateral acceleration numbers don't necessarily mean a car handles well.

RXSevenSymphonies 09-05-04 02:56 AM

In the Eagle F1 tires vid a modified E46 M3 supposedly pulled around 1.4g on a normal road.

ddub 09-05-04 03:10 AM


Originally Posted by MaYnard5000
In the Eagle F1 tires vid a modified E46 M3 supposedly pulled around 1.4g on a normal road.

I have Eagle F1's >_<

RX-Heven 09-05-04 01:33 PM

Among many other things, first you would have to go with a widebody such as the one from Tri-Point like Carl Byck and I have.
I have no tires for my widebody car yet, but Carl has managed to stuff 13" wide Trans Am slicks in the rear and 11.5" up front I believe.
This setup with some decent aero at speed, after a lap or so to heat up the tires would get you around that number probably.

His car will be track ready pretty soon and I'm as anxious as he is to see how it does around the corners. btw, notice I said track, as imho, you couldn't get a car on the street near that level.

PureSephiroth 09-05-04 03:52 PM

i remember seeing someone in the Race Car Tech forums that was pulling well over 1g. I don't think it would be that incredibly hard or expensive.

Widebody
Wide Rims
Racing Slicks
Coilovers

should get you close at least.

edit: found it, DamonB's FD pulled just over 1.3 g's of lateral acceleration on the road course. Keep in mind this is an FD, but the dimensions of the car are close enough to those of the FC that I would think you could get similar or better number without huge modifications.

drago86 09-05-04 05:15 PM

FD has a much better suspension setup then the FC.

DerangedHermit 09-05-04 06:01 PM


Originally Posted by drago86
FD has a much better suspension setup then the FC.

Stock...

PureSephiroth 09-05-04 06:19 PM


Originally Posted by DerangedHermit
Stock...

my point exactly ;)

snub disphenoid 09-05-04 07:50 PM


Originally Posted by MaYnard5000
In the Eagle F1 tires vid a modified E46 M3 supposedly pulled around 1.4g on a normal road.

Not on a skidpad.

rotarygod 09-05-04 08:05 PM

An FB with full suspension upgrades from G Force Engineering has pulled 1.3 g's cornering. It had an extremely stiff suspension and was using autocross compound tires. 1.3 is pretty damn good. To go from 1.1 g's to 1.3 g's is harder than going from 1.3 to 1.5. If you go out and buy a Formula 1 car you an hit 3+ g's. I'm going to just say that it can not be done by anyone in an FC.

gxlspeeder 09-06-04 03:50 AM

more camber, sticky as hell tires, completely stripped lightweight everything car

SPiN Racing 09-06-04 05:13 AM

E Production FBs are having a new problem. You cant buy the OEM Front rotor/hubs anymore. For the most part (ALL) of the aftermarket hub/rotors are having a problem in the high end peoples cars.
The problem is the Rotor WITH the tire attached is breaking off the hub under hard cornering.
What you end up with is a cast hub unit attached to the spindle.. and the disc itself attached to the tire goes bounding down the track as you crash into whatever is in front of you.
(Thread listing the problem: http://www.coloradoscca.org/prodcar/...pic.php?t=3291)
Pic of the rotor: http://coloradoscca.org/images/20040...otor%20005.jpg

NOW... That being said... these cars have 9.5 Inch wide slicks all the way around. They are lighter than stock.. quite a bit.. and have full suspension.
Suspention at a minimum would consist of shocks, 2.5" springs, perches, sway bars, camber/caster, lowered a lot... etc.
These cars corner as hard as anything without ground effects. I cannot say how hard because I havn't seen and G plots of it. But I do know if you break off your hubs.. you are hanging the turns pretty hard.
When my FC is done.. I will be able to find out.

RX-Heven 09-06-04 11:53 AM


Originally Posted by rotarygod
To go from 1.1 g's to 1.3 g's is harder than going from 1.3 to 1.5. .

Are you sure about the info of going from 1.1 to 1.3 is harder than going from 1.3 to 1.5?
I'm not sure, but I thought it was a function not unlike that of how much hp vs. drag it takes to go faster. I know that is essentially an exponential function and figured the amount of grip, i.e. friction, it takes to keep a car on the road vs. load would be something similiar.


Originally Posted by rotarygod
I'm going to just say that it can not be done by anyone in an FC.

Now that is an overstatement for sure....

MichaelFregoe 09-06-04 12:06 PM

Get 3 giant stickers and put them across 2 body panels.. that should be close to getting you there.

Seriously.. To pull such a high number I doubt the car would even be streetable and the tires necessary would not be something easily afforded for a daily driver... (wear quickly)

PureSephiroth 09-06-04 12:15 PM

the tires required to achieve 1.5 g's would definately not last on the street but it is far from impossible to achieve 1.5g's with an FC. Tires are more capable these days than you think.

also, keep in mind that the 1.3 g's was on the track, not a skidpad. I would expect to see even more on a skidpad.

digitalsolo 09-06-04 06:15 PM

1.5 g is attainable, certainly, but not cheap and not likely to be a practical street machine.

Snrub 09-06-04 06:33 PM

23racer posted a datalog from a few weeks ago at Mosport where he was hitting 1.4Gs. I I don't know every detail of how he acheived this so I'd suggest you look into FC race cars (eg. race forum), as it is rare for anyone in the FC forum to have this type of vehicle and you'll end up getting poor response.

Syonyk 09-06-04 06:42 PM

Easiest way? Side thrusters. Car weighs, what? 3000 lbs? So 6000 lbs of side thruster force should get you around 2 Gs. :D

-=Russ=-

xfeastonarsex 09-06-04 11:39 PM


Originally Posted by torean
hahaha.....why?.....

because I want to snap peoples necks clear off when I take a turn!

xfeastonarsex 09-06-04 11:43 PM


Originally Posted by NZConvertible
Why are you even interested in this acedemic number, especially such a high one? It has little to no relevance in street driving anyway, since you'll most likely never corner on a surface and smooth and flat as a skidpan. High lateral acceleration numbers don't necessarily mean a car handles well.

because it is an academic number, it was a number pulled out of my ass. I was thinking about the DTSS and started thinking about skidpads, then started wondering about getting to 1g ease, to I decided to make it 1.5 and if someone could come up with that number how about 2 then? That answer your question?
I never said anything about it being streetable.

xfeastonarsex 09-06-04 11:45 PM


Originally Posted by MichaelFregoe
Get 3 giant stickers and put them across 2 body panels.. that should be close to getting you there.

Seriously.. To pull such a high number I doubt the car would even be streetable and the tires necessary would not be something easily afforded for a daily driver... (wear quickly)

I wasnt thinking of it being streetable, mabey this should have been in the race car tech...

Madrx7racer 09-07-04 02:12 AM

several of these in strategic places:
http://cgi.ebay.com/ws/eBayISAPI.dll...489086248&rd=1

xfeastonarsex 09-07-04 02:22 AM


Originally Posted by Madrx7racer
several of these in strategic places:
http://cgi.ebay.com/ws/eBayISAPI.dll...489086248&rd=1

I dont even need to look at the link, I just saw your post in the lounge, hehe.

Madrx7racer 09-07-04 02:33 AM

:D

marlaman 09-07-04 02:52 AM

DUH, it's so easy. Cross the freeway when it's busy with Semis and don't look either way, i hear there is a 76% chance you might hit about 2.5 g's for at least a second!

How could you guys have forgotten that?!

sooo soo simple....
Matt:)

Travis R 09-07-04 07:31 AM

Assuming you've already resolved yourself to the fact that the car will be totally unstreetable, here are a couple rules of thumb:
Lower weight
lower CG
wider track (not JUST wider tires)
stickier tires (Hoosier R25A compound road racing slicks)
Good luck

Ronald E. Jacques 09-07-04 07:52 AM

How about two steel cables, one attached to the front and one to the back, and a really strong pole to attach them to! Just kidding.

BDoty311 09-07-04 08:35 AM

You are going to need some very extensive aerodynamic work to get up there aswell.

Carl Byck 10-15-04 05:52 PM

put these http://www.teamfc3s.org/forum/member...hp?img_id=6999

Carl Byck 10-15-04 05:58 PM

on this, https://www.rx7club.com/attachment.p...chmentid=73534

And then hire Ground Control/Huffaker/ SpeedSource, ETC to help you dial it in. This is the car that Dave (RXHeaven) was talking about. I have no idea what it will be capable of, but it should at least equal a good EP car. Given the much larger tires, it MAY be possible to improve on EP grip, we shall see. Carl

slidingsky 10-16-04 12:12 AM

more important than the coilover or tires. SWAY BARS self explanatory. Cheap too.
Well of course you need the whole package, but thats the most important.
I was running my 20b with no front bar. Konis, 500lb" springs and the car still rolled like crazy. THe bar makes the most noticable diffrence.

SPiN Racing 10-17-04 12:43 AM


Originally Posted by Carl Byck
on this, https://www.rx7club.com/attachment.p...chmentid=73534

And then hire Ground Control/Huffaker/ SpeedSource, ETC to help you dial it in. This is the car that Dave (RXHeaven) was talking about. I have no idea what it will be capable of, but it should at least equal a good EP car. Given the much larger tires, it MAY be possible to improve on EP grip, we shall see. Carl


With those tires Carl.. if the weight is down, and as you said.. dialed in properly.. you should be flirting in GT levels of lateral grip.

A Team that runs a F500 car I was helping our with recently does 2.5 in the corners via the telemetry data. All the time. Spikes higher.
I am certain with a properly setup car.. and enough meat.. you can certainly break 1.5

Shoot now that I re-read this.. watch any of the TOP Gear vids of the Skyline... they do 1+ just yanking on the steering wheel... and those are BOATS... with DOT street tires.

RotaryWeaponSE7EN 10-17-04 01:45 AM


Originally Posted by marlaman
DUH, it's so easy. Cross the freeway when it's busy with Semis and don't look either way, i hear there is a 76% chance you might hit about 2.5 g's for at least a second!

How could you guys have forgotten that?!

sooo soo simple....
Matt:)

:werd: LOL!


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