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Maz 11 January 2015 11:29 AM


Originally Posted by RS_Matt (Post 11600779)
I know it's slight but I'm looking at accumulative factors. Why are they lighter? Stronger (but lighter) material for strength or to reduce already heavy drivetrain losses?

Material composition is superior, alloy as opposed to steel iirc, by virtue of the fact they were handling more power and torque.

RS_Matt 11 January 2015 12:18 PM


Originally Posted by The Pink Ninja (Post 11600800)
You know everything about why the WRX is a better, faster, stronger car yet you still asking the obvious questions, Do the maths on the numbers then try and work it out...obviously in private,
Its not all about 400m runs, Chuck some corners in and its a different ball game, but then you cant be that naive to think to think otherwise can you?

Corners on a skin smooth track or bumpy potholed road?

TBH I'm only scratching the surface on why the STI is significantly slower than a WRX. It was only a matter of months ago I realised just how much of a difference there is and weeks since I realised it was just more than an extra gear change lol.

It's definitely accumulative and I'd like to know all the factors in tuned and OE examples.

Weight difference
All transmission loss contributors
Extra gear change
Hitting limiter
Wheelspin from extra torque/shorter ratios
Extra drag
Ride height
Lift
Engine/oil heat management for top end performance i.e. your first run will give an higher terminal time than your last

I want to know everything.

RS_Matt 11 January 2015 12:19 PM


Originally Posted by Maz (Post 11600802)
Material composition is superior, alloy as opposed to steel iirc, by virtue of the fact they were handling more power and torque.

So weight will negate length? A lighter propshaft will transfer more power to the wheels than a shorter one? (Did Norris Designs run a shorter propshaft this with their bogey EVO?)

JGlanzaV 11 January 2015 12:35 PM

I think the right place to start with this Matthew is a physics degree and you will answer all your own questions, turning forces, inertia, energy etc, or start googling ;)

The Pink Ninja 11 January 2015 02:21 PM


Originally Posted by RS_Matt (Post 11600865)
Corners on a skin smooth track or bumpy potholed road?

TBH I'm only scratching the surface on why the STI is significantly slower than a WRX. It was only a matter of months ago I realised just how much of a difference there is and weeks since I realised it was just more than an extra gear change lol.

It's definitely accumulative and I'd like to know all the factors in tuned and OE examples.

Weight difference
All transmission loss contributors
Extra gear change
Hitting limiter
Wheelspin from extra torque/shorter ratios
Extra drag
Ride height
Lift
Engine/oil heat management for top end performance i.e. your first run will give an higher terminal time than your last

I want to know everything.

Such a poor attempt at trolling that, I`m kinda disappointed, So your Modified and extremely Lightened WRX was still slower over a 1/4 mile than a standard remapped sti spec-c with an exhaust swap and a 12 year old clutch ....Thats is a fact apart from no one has ever seen proof of a 12.6 from you have they...but please feel free to correct me if i am wrong??

Maz 11 January 2015 04:24 PM


Originally Posted by RS_Matt (Post 11600867)
So weight will negate length? A lighter propshaft will transfer more power to the wheels than a shorter one? (Did Norris Designs run a shorter propshaft this with their bogey EVO?)

At the risk of giving you some confidential info have a read of this article. It gives an insight in to MOI and how to reduce it. As someone said above I could have mentioned Googling Newton's second law of motion and studying Dynamic Physics but this article puts it in layman's terminology.

http://www.stockcarracing.com/techar...#__federated=1

RS_Matt 21 January 2015 01:13 PM


Originally Posted by The Pink Ninja (Post 11600944)
Such a poor attempt at trolling that, I`m kinda disappointed, So your Modified and extremely Lightened WRX was still slower over a 1/4 mile than a standard remapped sti spec-c with an exhaust swap and a 12 year old clutch ....Thats is a fact apart from no one has ever seen proof of a 12.6 from you have they...but please feel free to correct me if i am wrong??

lol.

Tidgy 21 January 2015 01:32 PM

should add basic engine specs and gearbox to the list of info, puts some context on achievement.

AndyF - 3.0 Flat 6, twin turbo, sequential gearbox
SMG - 2.5, GT42, ? gearbox
Mikee - 2.1, GT35, manual gearbox


etc etc

RS_Matt 21 January 2015 02:25 PM

It's hard enough just to source the 1/4 time and terminal off most members.

The Pink Ninja 21 January 2015 03:55 PM


Originally Posted by RS_Matt (Post 11608622)
lol.

You can lol now you have posted you time but my post was put up prior to yours Mr Gill.

RS_Matt 21 January 2015 07:32 PM


Originally Posted by The Pink Ninja (Post 11608733)
You can lol now you have posted you time but my post was put up prior to yours Mr Gill.

Double lol.

RS_Matt 28 August 2015 07:59 PM


Nothing changes, STI still a waste of fcukin money.

stevebt 05 September 2015 05:22 PM

Mine was on 11 dead before my gearbox gave up, I don't have the timeslip for it but it was on the 22b team at TOTB two years ago so would be timed somewhere. The time would of been lower if not for gearbox issues :)

mickywrx 05 September 2015 07:00 PM


Originally Posted by stevebt (Post 11732761)
Mine was on 11 dead before my gearbox gave up, I don't have the timeslip for it but it was on the 22b team at TOTB two years ago so would be timed somewhere. The time would of been lower if not for gearbox issues :)

IIRC Gav did a 10.? in it Steve, before the box luched itself. Could be wrong though.

cookstar 05 September 2015 07:01 PM

I managed a 10.9 recently with 518 BHP

stevebt 06 September 2015 04:18 PM


Originally Posted by mickywrx (Post 11732810)
IIRC Gav did a 10.? in it Steve, before the box luched itself. Could be wrong though.



I got told nothing Micky, it could of for all I know.

RS_Matt 12 September 2015 09:52 AM


Originally Posted by cookstar (Post 11732811)
I managed a 10.9 recently with 518 BHP

In the Turbo 2000?

boosted 28 September 2015 01:57 PM

1 Attachment(s)
Add me to the list:
Full weight inc spare wheel 03 blob wrx, 353bhp 346lbft, 13.18 1/4 @ 103mph. This is a proper road car.
Attachment 42370

RS_Matt 28 September 2015 03:36 PM

Sorted bud, gonna have to go the lightweight route sooner or later with that power!

boosted 28 September 2015 09:37 PM


Originally Posted by RS_Matt (Post 11742563)
Sorted bud, gonna have to go the lightweight route sooner or later with that power!

Cheers, I like to keep it a car! Needs to be comfortable and safe for my wee girl, actually putting an organic clutch in it and doing away with the paddle

RS_Matt 29 September 2015 09:48 AM


Originally Posted by boosted (Post 11742800)
Cheers, I like to keep it a car! Needs to be comfortable and safe for my wee girl, actually putting an organic clutch in it and doing away with the paddle

Some lightweight parts make the car safer and more reliable. You can even lessen transmission losses.

Save 40kg with just bucket seats!
Lightweight battery 7kg
Lightweight flywheel 6kg
Lightweight pulleys
Carbon fibre propshaft
Polycarbonate windows
Lightweight alloys
Lightweight wheel nuts
Lighter aftermarket suspension
Lighter calipers
Lightweight tyres
Spare wheel and jack removal

A good 80kg there which is equivalent to 20-30bhp factoring in transmission losses as well.

It's a nice little package for a maxed out 350/350 WRX, a 380bhp WRX is the equivalent to a 460bhp STI imo

cookstar 29 September 2015 10:56 AM


Originally Posted by RS_Matt (Post 11735559)
In the Turbo 2000?


Yep. :thumb:

boosted 29 September 2015 02:19 PM


Originally Posted by RS_Matt (Post 11742930)
Some lightweight parts make the car safer and more reliable. You can even lessen transmission losses.

Save 40kg with just bucket seats!
Lightweight battery 7kg
Lightweight flywheel 6kg
Lightweight pulleys
Carbon fibre propshaft
Polycarbonate windows
Lightweight alloys
Lightweight wheel nuts
Lighter aftermarket suspension
Lighter calipers
Lightweight tyres
Spare wheel and jack removal

A good 80kg there which is equivalent to 20-30bhp factoring in transmission losses as well.

It's a nice little package for a maxed out 350/350 WRX, a 380bhp WRX is the equivalent to a 460bhp STI imo

I need to keep the seats as they are for child seats, just bought a brand new battery two months ago so it's staying! I made the flywheel, it's kinda already lightweight, the audi prop is already light compared to a. Impreza one, and is only 1 meter long too. Not sure I'm ready for plastic windows! Although I have just bought some oem WRX 17" wheels to replace my heavy 18" ones. I could just put three wheel
Nuts on each wheel, that would be lighter? 😂
Above all I think I need to weigh the car as it stands just now, and also compare the weight of the wheels

RS_Matt 29 September 2015 07:39 PM

Yeah nuts aren't that heavy but their weight increases x125 when the wheel is spinning! Like that spinning ride at the fairground where the nipper sits on the inside and still crushes you.

boosted 29 September 2015 08:45 PM

Your physics is quite questionable Mathew. Not exactly following you on that one lol

RS_Matt 29 September 2015 08:53 PM


Originally Posted by boosted (Post 11743250)
Your physics is quite questionable Mathew. Not exactly following you on that one lol

They probably double in weight when the wheel is spinning so a 1KG saving technically becomes a 2kg saving etc.

boosted 29 September 2015 09:03 PM


Originally Posted by RS_Matt (Post 11743256)
They probably double in weight when the wheel is spinning so a 1KG saving technically becomes a 2kg saving etc.

It doesn't work like that.
The mass of the nuts doesn't change. They will exert a centrifugal force when spun but that will in no way change their mass or weight.

ossett2k2 29 September 2015 09:10 PM


Originally Posted by RS_Matt (Post 11743215)
Yeah nuts aren't that heavy but their weight increases x125 when the wheel is spinning! Like that spinning ride at the fairground where the nipper sits on the inside and still crushes you.

Pmsl :lol:
So you're saying my car is 187kg when my wheels are turning?
75g x 20 x 125

RS_Matt 01 October 2015 01:11 PM


Originally Posted by ossett2k2 (Post 11743269)
Pmsl :lol:
So you're saying my car is 187kg when my wheels are turning?
75g x 20 x 125

Under hard braking my nuts triple in weight too but the tail pipe becomes lighter.

Weight transfer works in mysterious ways.

RS_Matt 01 October 2015 01:47 PM

Am I right in saying if you put low friction oil in a 350lbft Impreza and drove it around the Nurburgring flat out that the torque figure would be around 400lbft when you crossed the finishing line?


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