BANG bang

[Pedro_The_Swift]

I was interested enough to drive from Toowoomba (6am on a saturday) to Nambour (9am kick off) to see the Asia Pacific rally cars run around the Nambour Showgrounds in a short Time Trial, media event, top ten shootout type thing.

The only interesting thing I found, (other than our guys **** on asia pacific cars) is the total lack of revs from the modern turbo evo 4wd rally car.

talk about short shift!!!

I reckon about two thousand revs is all they get to play with,, from 3 to 5?

and backfire?!?!?!?!
you have no idea,, a moments hesitation and BANG!
some of them didnt require that! every single lift of the right foot and BANG!
and not just a single BANG!,
BANG! BANG! BANG! BANG!
untill the lower gear is pulled,,
unbelievable.

every single asia pacific car ran like this,,,

waste of good turbo's I reckon:mad:

[awabbit6]

I think you'll find that's the antilag that they fit to the turbo cars Pedro. Between gears they burn fuel in the exhaust manifold to maintain gas flow through the exhaust and hence keep boost pressure up. At least that's my understanding from a mate of mine who has prepped some Asia-Pac Subarus.

YouTube - Subaru STi Antilag

[moose]

Anti-lag sounds amazing coming thru the forest towards you! You are correct that it's to keep the turbo spinning at full speed whilst off throttle, but it's also switchable so they can turn it off while on a transport stage or similar.

[isuzurover]

Indeed, Paul is correct.

If I recall correctly, as soon as they back off, the computer stops the engine firing on one cylinder, so the fuel burns in the turbo instead, making it work somewhat like a jet turbine, and stays spooled up so boost is always there. This is much easier than the old method of accelerating and braking at the same time...

The short rev range may be for the same reason???

Pedro - any pics/vids???

[Pedro_The_Swift]

Sorry Ben:(

just out of curiosity---

can everyone else HEAR that vid??

[d@rk51d3]

Sorry Ben:(

just out of curiosity---

can everyone else HEAR that vid??


Loud and clear. :cool:

[Cap]

What a waste of fuel. The prob is I wonder how much advantage that would give the average Joe driver! Its like motorbikes, they manhufacturers come out with ever increasing lighter bikes to have the 'advantage', but what advantage when a lot of riders are overweight or can never use the full potential of the bike anyway.

[rick130]

What a waste of fuel. The prob is I wonder how much advantage that would give the average Joe driver!
<snip>

But they aren't your average cars ! ?

It's motorsport, where you do whatever to give your blokes an advantage (within the rules, of course :angel: )

[rick130]

Aren't the latest crop of WRC and AP rally cars inlet restricted ?
If they still are, it really drops the torque band down to where mere mortals tend to drive.
The same thing happened in F3 years ago with the inlet restrictors.
IIRC a Formula Ford out revs an F3 car, you short shift the wings and slicks car and use the torque. I think they just stopped revving at about 5500 :lol2:

Anyone old enough to remember when Toyota had a moveable sleeve to by-pass the restrictor on the WRC Celicas ?
Talk about sprung big time :twisted:

[Barefoot Dave]

Love the sound of a car machine gunning through the forest : ))
'
Pedro, as a result of the spectacular loss of life during the 'Group B' days of rallying, FIA decide that it was easier to limit the power of the cars rather than limit the poor crowd control that allowed too many people too close to the action.
The format went to 'Group A' based on real cars and a drastic cut in power. The focus went to suspension, tyres and TORQUE.
Cars are now required to have a 32mm (yes 32mm!) restrictor up from the turbo. As a result greater airflow results in more inlet turbulence/ reversion etc.
That said, the current crop of ~280kW WRCars have far better stage times than the 550kW Gruppe B monsters.

mmm, Time to watch 'Too fast to race' again

Dave.

[Barefoot Dave]

Must be time for 'Climb Dance' again:

YouTube - Climb Dance (High Quality)

[rick130]

<snip>

mmm, Time to watch 'Too fast to race' again

Dave.

Still have that old Audi film on VHS with Walter Röhl on the San Remo in the Quattro.

Also loved the sound of a BDA reverberating through a forest.

Only heard it a few times, the first time we were checking out Glow Worm tunnel near Newnes and someone was doing a test run up the valley.
My two mates and I just sat on the side of the ridge listening, absolutely captivated.
I think I was only about 15 or 16 at the time. It made a lasting impression. :D

[rick130]

I'm old enough to remember twin cam escorts with forest flares(had a replica,not twin cam) and SAAB 96V4.There's a weird rally car.:D

Geez Coops, you must be getting up near Pedro's years :eek:

Back when I was a young fella karting, my engine builder was the owner/builder of the infamous 'Trench Digger' Milodon Sprint Car Chev engined Commodore that Wayne Bell piloted.
When Belly was piloting the Corolla Levin we went out testing with him a few times, but I never got to go for run unfortunately. He came kart testing with us a few times and used to have a few laps in my kart, just for fun, and when my mates Dad was out of circulation for a bit, we had the use of his Datto 720 sweep ute for our kart trips.
Amazing how quick an L20 datto engined ute with twin 45 Webers is :D

[Pedro_The_Swift]

Geez Coops, you must be getting up near Pedro's years :eek:
:p
I worked in many pit areas that Mr Bell also went to,,,


Amazing how quick an L20 datto engined ute with twin 45 Webers is :D

Yea Baby!:cool:

[Pedro_The_Swift]

Love the sound of a car machine gunning through the forest : ))
'
Pedro, as a result of the spectacular loss of life during the 'Group B' days of rallying, FIA decide that it was easier to limit the power of the cars rather than limit the poor crowd control that allowed too many people too close to the action.
The format went to 'Group A' based on real cars and a drastic cut in power. The focus went to suspension, tyres and TORQUE.
Cars are now required to have a 32mm (yes 32mm!) restrictor up from the turbo. As a result greater airflow results in more inlet turbulence/ reversion etc.
That said, the current crop of ~280kW WRCars have far better stage times than the 550kW Gruppe B monsters.

mmm, Time to watch 'Too fast to race' again

Dave.

hmmm,, two things spring to mind,,,
to compare times, it has to be the same section,,,
and if it IS,,
I'd certainly hope they'd be faster after practising for 30 years.
;):p

[moose]

Anyone old enough to remember when Toyota had a moveable sleeve to by-pass the restrictor on the WRC Celicas ?
Talk about sprung big time :twisted:

Don't need to be that old to remember that one. Quite a clever design it was though!

[frantic]

To hazard a guess on the short rev range , It would most likely be the restriction they put on the size off the air intake to try and level the playing field: limited air in= limited revs. But i am not 100% sure if that class is covered by a restricted intake.

[Pedro_The_Swift]

To hazard a guess on the short rev range , It would most likely be the restriction they put on the size off the air intake to try and level the playing field: limited air in= limited revs. But i am not 100% sure if that class is covered by a restricted intake.

could be,,

in our case the 5900 limit is set due to small injectors,,
another 1500 revs are available (and the nice bump in playability that goes with it) with bigger injectors,,
just add $$$$.

so maybe there is an "common" injector used,,

[scarry]

Can anyone else see the insect on Rick130 post,or is it just me.....

How did that get there:eek::eek::)

[SuperMono]

Have a listen to the new (non Turbo) S2000 cars like the Bates Corolla.
Plenty of revs in use, like an old BDA Escort, but better.

[Pedro_The_Swift]

yes! Master Bates was there!

did ONE run:p

TOTALLY different car to the rest of the field.:(

[rick130]

yes! Master Bates was there!

<snip>

Famously christened thus by Mulligan. :D
Used to love his column in the fishwrappers fortnightly.

Mad bastard used to share accommodation in the seventies (before my time) with another mad mate of mine Steven Brook.
The stories Brookie has told me over the years, usually involving woman and/or cars :eek:

I dips me lid to the generation of racers that preceded me, they really did live the dream. :twisted: