I want to disconnect the rear wing completely so it does not come up. I’ve tried fuse #20 which disables the wing but an alarm comes on @ about 80 mph. I’ve tried all the wires to the motor which disables the wing but the stupid alarm still comes on.

Any more ideas? There must be a sensor somewhere in the system to be bypassed. Any techs have wiring schematic?

And by the way the car is perfectly stable all the way to 135 mph with no wing. The only danger is the stupid and distracting alarm going off.

(If the wing did not look so cheap, like some boy-racer in a Honda Civic, I'd keep it.)

 

I prefer to think of the wing as more Porsche-like rather than boy-racer Honda Civic. However, I do not know off hand how to bypass the warning.

 

Do you have a Roadster? Because if it's a coupe, it's hard for me to believe that you don't get any lift at high speeds like that. What if the road isn't really good, or it's windy?
Good luck with your endeavor. I like the spoiler and the fact that it goes up and down. Maybe you should look into the srt6. It's wing is fixed and it goes even faster!

 

Yeah, the boat tail design does tend to cause the back end to become "lighter" when going fast. I read somewhere a while back saying the spoiler adds something like 100 pounds of downforce at highway speed. I can't remember the source, though.

 

The Crossfire info CD I have says the spoiler adds 40 lb downforce at 80 mph.

 

There's no stability issue with the wing disconnected on windy or rough roads. I drive a lots in WI where there are plenty of open stretches and twisties. It may help on a race track but on public roads it is more than useless. It evens block the rear window along the bottom.

Tha Porsche wing has a 'boot' to cover the mechanicals, so it doesn't look like a wing from Pep Boys. Favorite Porsche - 1967 911s - no wing.

 

That makes sense given the size and shape of the wing. My source was undoubtedly less than reputable.

 

40 lbs is not a great deal when one considers just the weight differencial of each of the drivers. The drivers seat is pretty much over the rear axel.

Nobody has the wiring diagram to show which wires go to the sensors?

 

I HAVE HAD MY WING FUSE PULLED SINCE DAY ONE...I HATE THE UNDER PINNINGS AS WELL...ESPECIALLY ON A WHITE CAR.

I THINK THE CHIME WHICH COMES ON AT 90 MPH IS SHARED WITH THE CENTRAL CHIME DESCRIBED BELOW....

The chime warning system uses a single chime tone generator that is integral to the Instrument Cluster to provide an audible indication of the vehicle conditions that may require the attention of the vehicle operator. The chime warning system includes the following major components:

- Headlamp Switch, Door Ajar Switch, Seat Belt Switch, Ignition Switch, Instrument Cluster, Coolant Level Sensor, Fuel Level Sensor, Washer Fluid Level Sensor.

Hard wired circuitry connects many of the chime warning system components to each other through the electrical system of the vehicle.

If the Instrument Cluster or the chime tone generator is damaged or faulty, the Instrument Cluster assembly must be replaced.

 

After taking the cover off the inside of the rear tail-gate, I can see two sets of wire. The larger wires seem to go to the motor and then there are secondary wires that lead to some conectors on wing mechanism. Could these be the sensor wires? Can I fool the system?

 

one question, why would anyone want to do this?

 

The wing is god awful ugly, gets in the way of the rear view and rattles, looks like some cheap add-on from pep-boys that some honda civic go fast boy would bolt on to his trunk on a Sunday. That's why. Plus the aesthetic of the 'boat-tail' are ruined. Read the thread.

 

i fully agree!

 

I disagree. More and more cars are coming out with deployable spoilers at high speeds. Do a search for the Mercedes SLR, for example.

I also notice it seems to help more during the rain, when your doing under 65, if its raining hard, putting up the spoiler seems to give you more control.

Also I think the true reason for the spoiler is not stability over 65 mph, but stability when your braking. If you have to brake hard, the car pitches forward, and the back comes up. Picture a guy on a sports bike doing an endo if you know what that is.

If your doing 80 and and everyone in front of you brakes, and you slam on it.. the rear end can become significantly lighter, leading to significant oversteer. Imagine doing 100 in it.. When your driving in a straight line or braking, oversteer is the last thing you want. If your braking on a curve, it gets even worse since your front wheels will already be turning the car a bit, I bet that rear end can snap out easily and spin you out of control..

So to sum it all up, I'd say disconnect it at your own risk, but at least be aware of the risk. And just remember... if you think its ugly.. remember... most of the time it's down.. most of the time your cruising around town or down the strip.. its down... Its when your doing 65 and above, does it really matter if the driver next to you doesn't like your spoiler? Who the hell cares? At least it makes you safe. And I think it's one of the coolest features of the car, why on earth would you ever get rid of it?

Oh yeah and it's NOT ricey. I have not seen one ricer with a deployable spoiler!! lol.. The only cars with deployable spoilers are Porsches, and other new high end cars like the Mercedes Mclaren SLR.. Why would you make your Crossfire leave such an exclusive club?

 

Base Price: 2004 Mercedes-Benz SLR McLaren - $435,000

"At the rear of the SLR an adaptive spoiler provides additional downforce. From a speed of 60 mph, it automatically adopts a 10-degree position, increasing the contact pressure at the rear axle. The spoiler also doubles as an airbrake: when the driver brakes heavily, it rises to an angle of 65 degrees, not only ensuring increased aerodynamic drag but also shifting the aerodynamic centre further towards the rear. This lends the SLR excellent stability when braking from high speeds."

Now why on earth would you not want an awesome feature that a $435,000 car has?

Some other sweet cars with deployable spoilers:

Bugatti Veyron

Lambroghini Murcielago

Chrysler Crossfire

Who still thinks it's ricey?

Welcome to the future, gentlemen.

 

Don't forget the Bentley Continental GT

 

The downforce number indicated is missing a key part. Force is measured in an amount of force per a given area. The wing exerts 40 lbs per square inch of down force.

IMO the wing makes the car; I enjoy watching people's reaction when it deploys!

Many engineers designed it to do exactly that deploy to add down force at high speed, but hey maybe you dissagree with the laws of physics...

 

I don't mean to pick on you, but that is about the funniest thing I've heard today.

Force is not measured in an "amount of force per a given area." That would be pressure.

Any no, our spoiler does not put down 40psi. If that WERE the case we'd all be doing wheelies when we hit 60mph... that is if the spoiler mechanism could resist what I estimate to be about 3 tons of additional downforce at 40psi on a 6"x24" spoiler.

On a side note, never use the word you are defining in its definition. You likely don't know what you are talking about if you use the word in its own definition.

-Heb, structural engineer.

 

40# / sq in? Wow what happened to common sense?

I haven't measured the wing, but it is something like 4 inches deep by 25 inches wide (100 sq inches) which means, under your estimate of 40# / sq in, that those little tinny arms on the spoiler are supporting something like 4000# at 80 mph......

I think physics is too much for you, maybe a little math and common sense.......

 

OK this is getting silly. I got the car for me not what others think about it. I hate the 'rice burner' wing. Its nothing like the Porsche or Merc wings. Its and aero afterthought. If you got the car to have people look at you, go get help.

The car I saw at the Chicago Auto show had no wing and is one of the best looking cars I've seen the U.S. ever design. Its not fast, it goes round corners faster than I have the testosterone to take to the limit and its just a great drive.

Mechanically and aerodynamically at speeds under 80-90 mph the wing has little effect. At these speeds mechanical grip determined by chassis geometry and tyres are more important. Some of the 'squirlyness' folks talk about are more than likely a combination of tyre and road surface.