Delta Wing Discussion ONLY - Page 47

**Aysedasi** · 13 May 2012, 07:42 (Ref:3073476)

Quote:

Originally Posted by DeathOrGlory

Gearboxes has always been a weak point of Nissan backed endurance racing programs...

Yep, just ask Kenny Acheson......

Victor_RO · 13 May 2012, 07:48 (Ref:3073478)

Quote:

Originally Posted by Aysedasi

Yep, just ask Kenny Acheson......

Did he actually make it to the green flag that year? If not, what do we actually call that car's entry that year, a DNF or a DNS? (that year being 1990)

Gingers4Justice · 13 May 2012, 11:26 (Ref:3073593)

Quote:

Originally Posted by Victor_RO

Did he actually make it to the green flag that year? If not, what do we actually call that car's entry that year, a DNF or a DNS? (that year being 1990)

If my memory serves me right (from watching the video of course having not being born) I'm sure it's a DNS

EDIT: I forgot the internet exists, we can just look on there!

**Aysedasi** · 13 May 2012, 14:39 (Ref:3073728)

Yep, DNS - gearbox broke on the warm-up lap.

**bjohnsonsmith** · 13 May 2012, 18:16 (Ref:3073898)

How much of the gearbox problem is related to the vector steering by the rear wheels?

gregtummer · 15 May 2012, 23:30 (Ref:3075076)

Didn't the ACO make then de-tune the engine some so that it could run between LMP1 and LMP2 lap times?

MulsanneMike · 16 May 2012, 00:46 (Ref:3075088)

Quote:

Originally Posted by bjohnsonsmith

How much of the gearbox problem is related to the vector steering by the rear wheels?

None that I'm aware. I did some more inquiring and understand it's a software issue and there simply hasn't been any time to address the problem. And it's a bigger issue for DW because the gearbox is a 30 kg wimp (isn't handling a lot of HP)...when something goes wrong it goes wrong in a big way...

MulsanneMike · 16 May 2012, 00:47 (Ref:3075089)

Quote:

Originally Posted by gregtummer

Didn't the ACO make then de-tune the engine some so that it could run between LMP1 and LMP2 lap times?

The whole concept is "detuned": power, aero-DF and drag, etc.

**joeb** · 16 May 2012, 00:58 (Ref:3075092)

Quote:

Originally Posted by gregtummer

Didn't the ACO make then de-tune the engine some so that it could run between LMP1 and LMP2 lap times?

Quote:

Originally Posted by MulsanneMike

The whole concept is "detuned": power, aero-DF and drag, etc.

Just throwing this out there, but the "detuned" engine may be necessary to meet their fuel economy goals.

MulsanneMike · 16 May 2012, 02:26 (Ref:3075098)

Quote:

Originally Posted by joeb

Just throwing this out there, but the "detuned" engine may be necessary to meet their fuel economy goals.

Chicken and egg situation...only need 300 hp or so to meet LMP2 times. The 300 hp is driven by their performance goals. As a result of the low HP (and drag) the car naturally burns less fuel.

gregtummer · 16 May 2012, 03:52 (Ref:3075106)

Quote:

Originally Posted by MulsanneMike

Chicken and egg situation...only need 300 hp or so to meet LMP2 times. The 300 hp is driven by their performance goals. As a result of the low HP (and drag) the car naturally burns less fuel.

Okay, but I thought I read somewhere (maybe this forum) that after they had the car built and were testing, the ACO made them reduce horsepower so that the car would run slower than LMP1s but faster than LMP2s. I recall seeing that they were limiting it's top speed to 280km.

miatanut · 16 May 2012, 04:26 (Ref:3075107)

It would suck if after getting this far, it went out at two hours because of gearbox software.

MulsanneMike · 16 May 2012, 10:11 (Ref:3075199)

Quote:

Originally Posted by gregtummer

Okay, but I thought I read somewhere (maybe this forum) that after they had the car built and were testing, the ACO made them reduce horsepower so that the car would run slower than LMP1s but faster than LMP2s. I recall seeing that they were limiting it's top speed to 280km.

300 km/h is the limit. They've done 305 in testing.

Catingaround · 16 May 2012, 10:39 (Ref:3075210)

Quote:

Originally Posted by MulsanneMike

300 km/h is the limit. They've done 305 in testing.

Wasn't there a set lap time they were not to drop below? I had seen or read that somewhere along the way but can't remember where now.

MulsanneMike · 16 May 2012, 13:25 (Ref:3075276)

Quote:

Originally Posted by Catingaround

Wasn't there a set lap time they were not to drop below? I had seen or read that somewhere along the way but can't remember where now.

LMP2 lap time is the target. I understand they were dead on that target at Argon.

Tim the Grey · 16 May 2012, 20:18 (Ref:3075438)

I thought it was tail end P2 target. And they are pretty much there. Hopefully they sort whatever issue the cogswapper has...

F50GTPlus · 19 May 2012, 18:07 (Ref:3076540)

I am not sure if this has been mentioned before but I just heard during the nurburgring 24h that the delta wing will have a sort of F1 style DRS, powered by a Nissan Juke power window motor is this true or is there anymore info on this anywhere

JoeMaters · 19 May 2012, 18:58 (Ref:3076551)

Mike Fuller ‏@mulsannescorner
DW's Snetterton test: car is now quicker than LMP2, will be trimming back some to make ACO happier. Still issues w/GB: not 24-hourable yet

nobster · 20 May 2012, 09:32 (Ref:3076730)

Quote:

Originally Posted by F50GTPlus

I am not sure if this has been mentioned before but I just heard during the nurburgring 24h that the delta wing will have a sort of F1 style DRS, powered by a Nissan Juke power window motor is this true or is there anymore info on this anywhere

Interesting, but for what wing will it be used?

Victor_RO · 20 May 2012, 09:57 (Ref:3076742)

Quote:

Originally Posted by nobster

Interesting, but for what wing will it be used?

The gurney flap on the rear trailing edge?

**bjohnsonsmith** · 20 May 2012, 19:44 (Ref:3076976)

Quote:

Originally Posted by JoeMaters

Mike Fuller ‏@mulsannescorner
DW's Snetterton test: car is now quicker than LMP2, will be trimming back some to make ACO happier. Still issues w/GB: not 24-hourable yet

I hope they get that gearbox problem sorted out. It would be shame to see the DW go out early in the race.

Articus · 20 May 2012, 20:09 (Ref:3076988)

Why does it need DRS if it is a ground effects car that doesnt rely on the wings...

Victor_RO · 20 May 2012, 20:18 (Ref:3076993)

Quote:

Originally Posted by Articus

Why does it need DRS if it is a ground effects car that doesnt rely on the wings...

They can still trim out the over-body aero with the gurney on the rear end trailing edge, I suspect that if they do "DRS" anything on that car, it will be that piece.

broadrun96 · 20 May 2012, 21:21 (Ref:3077012)

Plus with a DRS type system they can improve efficiency at high speed without losing the low speed grip. I'm surprised it hasn't been approached by the ACO as an efficiency addition to the rules. This could also help separate the LMPs from GTs, allow the protos to run with less wing in the straights, or conversely as much wing in the straights but more in the corners, could help them get around the GTs without taking as many risks. Yes, just tossing out an idea; might not be practical but could be worth taking the idea to some of the teams.

**skycafe** · 20 May 2012, 21:26 (Ref:3077015)

Quote:

Originally Posted by skycafe

In some of the photos, and it is very difficult to tell because of the uniformly dark bodywork, but it appears the gurney flaps may be 'active?' One rear photo seems to show the inside one higher then the outside one.

Maybe my imagination?

I was wondering about the gurney flaps back at the Sebring display. Each shot seemed to have them at a different angle, on what would have been the same run.

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