R32 Aero Problems

[Weaselman]

Hello all.

Can anyone who races their 32 point me in the direction of a rear wing or lip that actually works. I have a GTR wing on my car and at speeds approaching 200 the back gets very very light. I have a front splitter to keep the front under control but am curious to what other people run cheers.

[GH05T]

would the rocket dancer lip help? it about as aggressive as you can get on angle.

[bcozican]

Depends on $$ and how much 'race' you want vs look etc

there are alot of fast cars around without any aero etc so obviously make sure suspension, tyres etc sorted first

Obviously the proven bigger 'GT' rear wings are there being Voltex, Topstage and APR - with the AUD going down so much it puts even the basic versions of the above into the $2.5K mark though

A rear lip probably wouldnt do much at all compared to a proper wing

on r32 gtst had a basic Origin 1700mm CF rear wing on and put a gurney flap on it... made the car feel solid in the rear.. though have absolutely nothing to compare it too so probably doesnt mean much but a decent starting point .... the angle i ran it etc prob causing too much drag vs downforce etc

recently it snapped going 200ks + so now going Topstage rear wing

when the wing snapped at tunuing session came in took it off went out 5 mins later so same track / tyre temps everything car felt very noticably unstable in the rear after that

its also about balance front to rear, i dont run a front splitter yet so I understeer alot, so yes your front splitter on vs no decent rear wing would prob make rear more unstable to usual ?

Edited February 10, 2016 by bcozican

[Weaselman]

The front splitter is a new edition. At the high 100's before the front felt like it was off the ground and the rear would threaten to come around if the wind shifted down the straight. I don't really want to rip the GTR wing off and would prob go a full wing on a spare boot lid. I don't want to pay thousands either.

Anyone use a lip/rear diffuser combo?

Also I run bilsiten all around with adjustable whileline sway bars front and rear. Front and rear strut bracing and a half cage. Also full nolethane bushes and camber cancelers. I couldn't say the set up is horrible. It has a little understeer and a pretty passive rear with predictable oversteer through bends. It is however a very stiff set up.

Edited February 10, 2016 by Weaselman

[Hadouken]

Do you still have hicas? Just thinking outside the box to your problem

[Weaselman]

No mate. Lock bar in the back.

[sneakey pete]

Cheap knockoff big wang jobbie may do the trick of getting the car settled and not be huge bucks.

[RBN1]

The front splitter is a new edition. At the high 100's before the front felt like it was off the ground and the rear would threaten to come around if the wind shifted down the straight. I don't really want to rip the GTR wing off and would prob go a full wing on a spare boot lid. I don't want to pay thousands either.

Anyone use a lip/rear diffuser combo?

Also I run bilsiten all around with adjustable whileline sway bars front and rear. Front and rear strut bracing and a half cage. Also full nolethane bushes and camber cancelers. I couldn't say the set up is horrible. It has a little understeer and a pretty passive rear with predictable oversteer through bends. It is however a very stiff set up.

Interesting. I have no such issues with that wing on my GTR on the track. Nor have I heard of anyone else having issues like you describe with standard wing. Possibly a problem elsewhere that a big GT wing will only mask?

Btw also I notice your car is super low. From my conversations with the ppl that built my GTR this is not ideal due to roll centers etc. Also I've noticed that they've setup my car with the front visibly higher than the rear. I can only assume this is due to needing front suspension travel and having a front heavy car with a cast iron block. "About a 100mm off the ground at lowest point is about right"

Either way the handling is night and day compared to when I first got it from Japan when it was super low with rock hard spring rates. Now running Racepace coilovers with white line sway bars and some minor bushes changed here and there.

Looking forward to seeing what the final solution is for you

[blind_elk]

I understand that the R32 GT-R rear wing produces something like 120kg downforce. It may just seem like its light in the rear because the front splitter is generating better front grip.

Just looked at my Nissan Race Team GT-R models, and they just have the Gurney lip thingo across the rear of the bootlid, so it would seem that might be the way to go.

[niZmO_Man]

A.k.a Nismo boot lip?

Maybe look at rear under body flow, i.e. diffuser?