Standing Mile: 2.5L + GT40R goes 189.092mph

[jigga]

Originally Posted by Richz

Why run negative camber? I would think you want 0-degrees all around for a straight mile. Is it to get the tires to fit with the lower suspension? A little "bite" to save the car from the side-to-side motions?

The goal was probably to reduce rolling resistance by having as little of the tyre in contact with the ground as possible while traveling in a straight line..

[beaviscih]

Originally Posted by Phatron

i believe he has the power........

Drag is the main component holding the car back. Adding more power to overcome the drag is probably a more difficult solution than making some aero changes because he would need to add a chitload of power. The buggati veyron video is good lesson, they talk about power vs drag starting at 2 minutes. It wasnt in this video, but IIRC it was said in another video that they had to add ~300hp to get from 240-250 mph. But lets say im not remembering that even close to correctly and beavisch would "only" need to add 100hp......thats no simple task on a car that already has a gt40.

When you really look at the different drag equations its quite astonishing how it relates to speed.

"Note that the power needed to push an object through a fluid increases as the cube of the velocity. A car cruising on a highway at 50 mph (80 km/h) may require only 10 horsepower (7.5 kW) to overcome air drag, but that same car at 100 mph (160 km/h) requires 80 hp (60 kW). With a doubling of speed the drag (force) quadruples per the formula. Exerting four times the force over a fixed distance produces four times as much work. At twice the speed the work (resulting in displacement over a fixed distance) is done twice as fast. Since power is the rate of doing work, four times the work done in half the time requires eight times the power."

Now you're cookin with hot grease - thanks for this post. Several of us have had this discussion and came to a similar conclusion. You either add a boatload of power to overcome drag or you look for ways to maximize the power with aeromods. Too much power (e.g. bigger turbo, more aggressive cams, more boost, etc., etc.) risks pushing the car from street / strip use to strip use only. My car is still streetable, albeit there is no way it would pass inspection in a city that is non-attainment for ozone.

Originally Posted by chudlo

Congratulations Bill!!

Thanks Chad.

Originally Posted by jigga

The goal was probably to reduce rolling resistance by having as little of the tyre in contact with the ground as possible while traveling in a straight line..

I've run the same camber setup since switching to the Tic/AST coilovers. I debated about going to 0 degree camber to increase the rubber grabbing the track, but ran out of time and wasn't sure this would help. Friction, resistance, drag...pick your terminology, will increase with the surface area hitting the track. I don't know how much it would help or hurt by minimizing camber, but it's really hard to experiment with the car given the number of times I actually get to run.

[Full-Race Geoff]

Originally Posted by Phatron

But lets say im not remembering that even close to correctly and beavisch would "only" need to add 100hp......thats no simple task on a car that already has a gt40.

a little OT (and i know he needs aero badly!) but its actually pretty easy for this car to make ~130+whp just turning the boost up and making sure the fuel is there. The turbo is not yet at high boost and there is plenty that can be done to the cams and top end beyond that. If/when they are maxxing out the 4088R, and are ready to bolt-on a bigger turbo thats no problem either the evo thats going 220+ is obviously much more developed than bill's STI, but that level of mph is certainly not an impossibility for a subaru

[suby_dude]

Congrats Bill! Your car is very impressive After seeing the Full Race kit @ SEMA a couple years ago I've always dreamed of having a GT4088R in my Suby

I'm happy to see the Rota Grid's are working out well for you

-Dan

[cnstman]

Very nice!! Do they give you a 1/2 mile mph?

[beaviscih]

Originally Posted by Full-Race Geoff

a little OT (and i know he needs aero badly!) but its actually pretty easy for this car to make ~130+whp just turning the boost up and making sure the fuel is there. The turbo is not yet at high boost and there is plenty that can be done to the cams and top end beyond that. If/when they are maxxing out the 4088R, and are ready to bolt-on a bigger turbo thats no problem either the evo thats going 220+ is obviously much more developed than bill's STI, but that level of mph is certainly not an impossibility for a subaru

I hope to meet with Chris at EngineLogics next week and discuss options. While I don't know if I'll do anything before March, I want to at least explore alternatives. Fuel is not a problem...IIRC IDCs were around 80% with plenty of pump capacity as it is set at the lowest flow setting on a very very conservative tune.

Originally Posted by suby_dude

Congrats Bill! Your car is very impressive After seeing the Full Race kit @ SEMA a couple years ago I've always dreamed of having a GT4088R in my Suby

I'm happy to see the Rota Grid's are working out well for you

-Dan

They worked well. While there are lighter wheels out there, I kept coming back to Rota's because of the price and the fact I've run three different sets at the Mile with no issues.

[jamal]

Originally Posted by jigga

The goal was probably to reduce rolling resistance by having as little of the tyre in contact with the ground as possible while traveling in a straight line..

weight/pressure = contact patch. alignment and width [mostly] only change the shape.

[MPS-Dom]

new rear wing for you bill.

[P20SPD]

For comparison, this was me driving a Classic shell back in 2006. Full weight, 2.35 engine, gt35/42 hybrid, 560flywheel bhp at 28psi on Dyno Dynamics Rollers, plus 75shot of Nitrous. 10.6 Quarter mile time at 132mph, going on to 194.8mph at 1 mile from a standing start.

http://video.google.co.uk/videoplay?...9131934105870#

[ScoobKing]

I need a towel....=(

[quadrozontal_1]

daaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaamn! lol thats movin!!

[beaviscih]

Originally Posted by P20SPD

For comparison, this was me driving a Classic shell back in 2006. Full weight, 2.35 engine, gt35/42 hybrid, 560flywheel bhp at 28psi on Dyno Dynamics Rollers, plus 75shot of Nitrous. 10.6 Quarter mile time at 132mph, going on to 194.8mph at 1 mile from a standing start.

http://video.google.co.uk/videoplay?...9131934105870#

Very nice. Another Subaru did 210mph in a 1.25 standing mile in the UK several years ago, but 194.8 in one mile is very impressive. Any pictures of the car?

[Full-Race Geoff]

Originally Posted by beaviscih

I hope to meet with Chris at EngineLogics next week and discuss options. While I don't know if I'll do anything before March, I want to at least explore alternatives.

give me a shout, i have some alternatives to suggest as well

re the wheels, im a huge fan of the enkei rpf-1's, they are really light, very affordable and ultra-strong. worth considering also

[texas05sti]

Originally Posted by beaviscih

Thanks for the props. I was disappointed you couldn't make it but can't wait till March. Ripler is close and once he gets it dialed in it will be much faster than what he posted this time.

I don't care who does it but one of the Subarus has to break 190 March. I saw Matt Monson is considering March with his TT EZ30, which would be cool and probably pretty fast.

Cheers.

I'm not interested in doing anything in the 190's, I'm going straight for the 200's.

I'm sorry I didn't make it out there too, but work got in the way too much at the end and getting it finished didn't happen, then I didn't get to come out there at all because I was at the lot. Oh well, that's life I guess. I'm tuning mine for pump gas/street duty in a couple weeks. Come February it'll be up at the shop for the c16/water tune.

[TheRipler]

Originally Posted by texas05sti

I'm not interested in doing anything in the 190's, I'm going straight for the 120.0's.

Fixed.

[P20SPD]

Originally Posted by beaviscih

Very nice. Another Subaru did 210mph in a 1.25 standing mile in the UK several years ago, but 194.8 in one mile is very impressive. Any pictures of the car?

Hi

The 210 was done by Andy Forrest in 2005.

The car i did 194.8mph is the grey one here

YouTube- Scooby Shoot Out 2005 Final

YouTube- Scooby Shoot Out 2005 Final

and looked exactly like this when it did 194.8.

Begining of 2009 we decided to do this to the car http://forums.nasioc.com/forums/show....php?t=1822756

As the car is now some 200kg lighter than when it did 194.8, and also has some 200bhp more, the aim in 2010 is to try and break 200mph over 1km (0.62 mile).

This should be possible, in the right conditions, as the car has done a 9.6 quarter in its current guise at 147, without nitrous. That's 15mph quicker at the quarter than the run in the video.

I would also like to try and break Andy's world record of 210mph, but i dont know if i am brave enough, as i have had a 170mph side wind wobble, which was a mild brown trouser moment!

Steven

[texas05sti]

Originally Posted by TheRipler

Fixed.

I hate you.

[TheRipler]

Originally Posted by texas05sti

I hate you.

Baby steps, Peter. Have to walk before you can run.

[sburck]

I wonder how much faster it would be without that 8mph head wind

[beaviscih]

Originally Posted by Full-Race Geoff

give me a shout, i have some alternatives to suggest as well

re the wheels, im a huge fan of the enkei rpf-1's, they are really light, very affordable and ultra-strong. worth considering also

I have a set of 17" Enkei RPF-1s on my '98L...I thought about swapping these over - but since the car is for street / strip use I decided to go with a set of 18" that would hopefully give me a little more RPM and still look good on the car after the event.

Originally Posted by texas05sti

I'm not interested in doing anything in the 190's, I'm going straight for the 200's.

I'm sorry I didn't make it out there too, but work got in the way too much at the end and getting it finished didn't happen, then I didn't get to come out there at all because I was at the lot. Oh well, that's life I guess. I'm tuning mine for pump gas/street duty in a couple weeks. Come February it'll be up at the shop for the c16/water tune.

So I guess you've decided to keep the '05 STi. If so, finish the damn thing and get it out there in March!

Originally Posted by P20SPD

Hi

The 210 was done by Andy Forrest in 2005.

The car i did 194.8mph is the grey one here YouTube- Scooby Shoot Out 2005 Final and looked exactly like this when it did 194.8.

Begining of 2009 we decided to do this to the car http://forums.nasioc.com/forums/show....php?t=1822756

As the car is now some 200kg lighter than when it did 194.8, and also has some 200bhp more, the aim in 2010 is to try and break 200mph over 1km (0.62 mile).

This should be possible, in the right conditions, as the car has done a 9.6 quarter in its current guise at 147, without nitrous. That's 15mph quicker at the quarter than the run in the video.

I would also like to try and break Andy's world record of 210mph, but i dont know if i am brave enough, as i have had a 170mph side wind wobble, which was a mild brown trouser moment!

Steven

Thanks for the info - extremely impressive. I can relate to the crosswind bobble... I had to pull the seat fabric from my ass after the last run Friday when the car walked sideways after hitting the brakes (AWD FTW). I didn't read the entire project thread so I may have missed it...what trans / final drive did were you running for the 194.8?

On a separate note, after Andy Forrest's webpage I was fascinated with the best of 3 and 5 race events hosted in the UK - very cool stuff.

[Rexxyou]

Hey would switching to an 06-07 front end help with the aerodynamics? they look a lot more efficient

[armyssoldierboy]

man, i wish i could see all the pics and charts at work what a beast tho!!

[Rexxyou]

hahahaha i feel you this nipr sucks

[Rexxyou]

but ill be home in 17 days sucker

[Phatron]

Originally Posted by Rexxyou

Hey would switching to an 06-07 front end help with the aerodynamics? they look a lot more efficient

The front of the car has very little to do with the drag on the car. No matter what u do to the shape of the front the frontal area stays constant, plus the radiator and fmic needing airflow significantly reduces options for reducing drag at the front.
Keeping the flow attached to the rear of the car is the key.