E30 m3

[AlexGTT]

Gorilla, I'm surprised at the different exhaust solutions on the Merc (in the undercut sides) and BMW (out rear bumper). Is that not regulated? I think the Audi has the same solution as Merc?

[pinkpanther008]

Dont know which i prefer, but these sounds are winning me over this season:

http://www.youtube.com/watch?v=GCgdfNR9J6w

Originally Posted by The Gorilla

Hi,

Just hope they go as well as they sound
this coming weekend.

Testing times suggest that Merc and Audi
are in front.

Not sure if I prefer the E46 GTR V8, or the
E92 V8's now.

Regards,

The Gorilla.

[The Gorilla]

Hi,

Alex- BMW MS are dis-advantaged for the
2012 DTM. Lack of Data.

Even with the Reg Changes Merc/Audi have
so much more Data and Knowledge from
the previous years that I personally think
BMW could well find it very hard going.

The Exhaust point, well spotted, is one of several, and even
though Engine power, saftey Cell, Rear Spoiler,
Gross Weight etc are very much regulated,
its all the 'Data' from the past years that
prevents making what can be a wrong and
very costly inherent design, that you have
to live with all season long.

Its very similar to Ferrari's problem this year
in that designing the front of the Car for
Pull Rod as well as the rear, following on from Red Bull's success
with their rear Pull Rod set up,
Ferrari discovered that getting it to work
is a nightmare.

Pull rod is not new to F1, and has the advantage
of allowing the suspension to be set down lower
in car, but in most cases takes a lot longer to
Dial into the car, which the current F1 testing rules
now work against.

The other issue discussed is that in that current F1
Cars run a very high nose it makes the angle of
a 'pull rod' on a tangent that makes the Crank bells
difficult to get effective damper travel for the suspension
settings.

Again some of the best brains in the business
not having any previous Data or the time [Regs]
to create their own.

Ironically Ferrari also have a downforce issue
caused by their exhaust positioning, which some think will
see the exhaust moved further forward so that
the 'aero' seals the rear diffuser.

It will be interesting to see how BMW and Ferrari
respond to these respective issues.

Regards,

The Gorilla.

[AlexGTT]

Yes, was very surprised and slightly confused by the BMW exhaust as using the undercut side floor for exhaust blowing has been common place in DTM for some years. I know the external rear wing flick-ups have gone now but there is an obvious use to seal the floor nicely to speed up under-car air flow through the diffuser.

Ref F1, was I thinking an odd decision for Ferrari to go front pullrod. Their exhaust solution looked wrong from the outset. Those solutions with the slot exhausts are very interesting. I think they are using the airflow to direct the exhaust gases to seal the diffuser at high speed, as you say from much further forward than Ferrari. Then at lower speed it blows the rear wheel hub winglets. Ferrari missed a trick here by maybe only concentrating on the later. I also think the use of exhaust gases from much further forward has been underestimated by the FIA. Everyone expected rapid cooling and dissipation of the gases would have negligible effect. It seems that was wrong!

[shimmy]

Originally Posted by AlexGTT

Yes, was very surprised and slightly confused by the BMW exhaust as using the undercut side floor for exhaust blowing has been common place in DTM for some years. I know the external rear wing flick-ups have gone now but there is an obvious use to seal the floor nicely to speed up under-car air flow through the diffuser.

Ref F1, was I thinking an odd decision for Ferrari to go front pullrod. Their exhaust solution looked wrong from the outset. Those solutions with the slot exhausts are very interesting. I think they are using the airflow to direct the exhaust gases to seal the diffuser at high speed, as you say from much further forward than Ferrari. Then at lower speed it blows the rear wheel hub winglets. Ferrari missed a trick here by maybe only concentrating on the later. I also think the use of exhaust gases from much further forward has been underestimated by the FIA. Everyone expected rapid cooling and dissipation of the gases would have negligible effect. It seems that was wrong!

Alex, you missed off the reference for the quote . Those paragraphs don't sound welsh to me!

[AlexGTT]

Originally Posted by shimmy

Alex, you missed off the reference for the quote . Those paragraphs don't sound welsh to me!

My obsession with racecar technology runs deep. I am truely ashamed to say I am a geek of the highest order with this sort of thing!! Therapy required here please.

[DazBlackCSL]

Originally Posted by AlexGTT

Therapy sessions required here please.

I can help out here

[AlexGTT]

Originally Posted by DazBlackCSL

I can help out here

Indeed! What we need is therapy session and soon.

Did Rob text you recently about a getting together before he's off on the high seas again mate?

[DazBlackCSL]

Originally Posted by AlexGTT

Indeed! What we need is therapy session and soon.

Did Rob text you recently about a getting together before he's off on the high seas again mate?

He was up this weekend, one of the lads is leaving the area to head down his way so leaving doo, and mini 2nd wetting of the Chloes head ! we hit Ascot with the pub lot, very messy eve!!

Got Usk in July too tho as per last year

When you around ?

[AlexGTT]

Originally Posted by DazBlackCSL

He was up this weekend, one of the lads is leaving the area to head down his way so leaving doo, and mini 2nd wetting of the Chloes head ! we hit Ascot with the pub lot, very messy eve!!

Got Usk in July too tho as per last year

When you around ?

Cool, sounds like you had fun.

Yeah, around in July. Text you later. Might be passing you next week or so.