Rear Spoiler for the Cybertruck…thoughts?

[dm5272]

It would definitely need a quick disconnect feature for two reasons:
1) Long distance travel to maximize range
2) When bed is needed to move large items like furniture etc.

Agree. The brackets already exist there. We would use the same as the roof rack.

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[igs]

It won't. I don't think that it can.

Spoilers are generally for increasing rear axle down force. To create that force, you have to steal power from somewhere, and that's the airflow.

So pretty much by definition, a spoiler is going to disrupt the airflow and create drag, increase the CoD and reduce range.

It's pretty much identical to sticking your hand out the window. It's going to be pushed back by drag, period. But you can create positive or negative lift by angling your hand.
But the higher the angle of your hand, the more it gets pushed back.

Like I said, spoilers are generally for negative lift or down-pressure on the rear axle for more traction.

The Cybertruck already has a big battery doing that.

Some people race the truck and want more downforce.

Loss of range is irrelevant.

And you are confusing spoiler with wing, they are not the same thing.

 

[igs]

An angular, stainless steel version of this would be great.

 

[Woodrick]

Some people race the truck and want more downforce.

Loss of range is irrelevant.

And you are confusing spoiler with wing, they are not the same thing.

And those that are going to race them aren't going to look at some random device, they are going to be looking at specific devices to deliver specific requirements.

 

[TeslaKen]

It won't. I don't think that it can.

Spoilers are generally for increasing rear axle down force. To create that force, you have to steal power from somewhere, and that's the airflow.

So pretty much by definition, a spoiler is going to disrupt the airflow and create drag, increase the CoD and reduce range.

It's pretty much identical to sticking your hand out the window. It's going to be pushed back by drag, period. But you can create positive or negative lift by angling your hand.
But the higher the angle of your hand, the more it gets pushed back.

Like I said, spoilers are generally for negative lift or down-pressure on the rear axle for more traction.

The Cybertruck already has a big battery doing that.

Absolutely 100% Agree ---- BUT ---

What if someone is towing behind them and the spoiler re-routes the air over the top of the trailer/camper behind them in a way that is more efficient than letting the air slam into the trailer/camper? That COULD lessen the impact that the trailer/camper would have the range loss, thus improving range in that one particular scenario. (Watch the video the engineering guy did on the towing the 911 competition on the track and he talks about the airflow over the Cybertruck and the towing range impact being determined by the height of what you are towing, shape, etc.)

Anyway, that was the 1 scenario where I thought a spoiler could potentially help with range. Otherwise, as you stated, any spoiler is going to decrease range, decrease top speed or both.

 

[Juicememelord]

I have been trying to figure out best way to do this as well. There are many affordable (ie. cheap) spoilers available, even some for under $100 (like the one in the pic from Vevor) that would be fun to just mess around with and see if I could get it to work. I'm also a very terrible to mediocre welder and metal worker (worker is a strong work for what I do), so I could also potentially make a total redneck one from sheet metal and some tubing I have around ...but im trying to avoid that option.

I'm sure this has been mentioned somewhere on here but what size bolts fit in the CT roof rack mounts?

The two most challenging issues are:
1) Aftermarket spoilers available dont line up with (or are even close) to the roof rack mounts on the CT. But I think I might be able to modify them, they appear to just be bolted on (ie. not welded).
2) Hiding it from the wife.

 

[Woodrick]

I have been trying to figure out best way to do this as well. There are many affordable (ie. cheap) spoilers available, even some for under $100 (like the one in the pic from Vevor) that would be fun to just mess around with and see if I could get it to work. I'm also a very terrible to mediocre welder and metal worker (worker is a strong work for what I do), so I could also potentially make a total redneck one from sheet metal and some tubing I have around ...but im trying to avoid that option.

I'm sure this has been mentioned somewhere on here but what size bolts fit in the CT roof rack mounts?

The two most challenging issues are:
1) Aftermarket spoilers available dont line up with (or are even close) to the roof rack mounts on the CT. But I think I might be able to modify them, they appear to just be bolted on (ie. not welded).
2) Hiding it from the wife.

I think that the answer is going to be much more in aligned with semis and you have the big over cab deflector. For the Cybertruck I'd foresee something that attaches at the roof apex and then raises airflow higher than the camper.

 

[Juicememelord]

I think that the answer is going to be much more in aligned with semis and you have the big over cab deflector. For the Cybertruck I'd foresee something that attaches at the roof apex and then raises airflow higher than the camper.

I didn't think about that, but that's a good point and great idea. The "large" spoilers for cars are still around 20 inches to short (most that I find are around 52 inches).

Maybe I'll get one of those and then also get one of those large semi horns where I can pull the cable to activate it. Go from my original idea of a adding a spoiler to make the CT look sports car-esque (or likely just trashy with my luck) to the other end of the spectrum and make it look like a semi.

This is probably not only a dumb question but something I could figure out with some research on Google, but.....
Is the purpose of the deflector on semis the same basic idea as a spoiler? Like to create downward force?

 

[Woodrick]

not only a dumb question but something I could figure out with some research on Google, but.....
Is the purpose of the deflector on semis the same basic idea as a spoiler? Like to create downward force?

Absolutely not. It's to deflect airflow over the trailer to decrease the drag.

Anytime that you create downward force, you are increasing drag. Drag reduces range and increases tire wear.

 

[Gurule92]

All the range worries in here road trip every day?

 

[Juicememelord]

Absolutely not. It's to deflect airflow over the trailer to decrease the drag.

Anytime that you create downward force, you are increasing drag. Drag reduces range and increases tire wear.

I told you it was a dumb question lol

 

[Woodrick]

I told you it was a dumb question lol

Not dumb, just often misunderstood.

So many cars have spoilers on them that are decorative ONLY.
Real spoilers are complex and tend to have adjustments for the race that the car is in. A high banked track like Bristol has very different needs than a relatively flat bank track, where the wheels are going to try to slide.

 

[igs]

Not dumb, just often misunderstood.

So many cars have spoilers on them that are decorative ONLY.
Real spoilers are complex and tend to have adjustments for the race that the car is in. A high banked track like Bristol has very different needs than a relatively flat bank track, where the wheels are going to try to slide.

You still don't know what you're talking about. A spoiler spoils airflow. A wing creates downforce. The two are totally different.

 

[Haoooc]

Maybe a dumb question. How can I reach to the further part of the bed if a spoiler is added? Now I need to climb on the bed if my stuff slides deep into the bed, but a spoiler will block my way.

 

[Woodrick]

You still don't know what you're talking about. A spoiler spoils airflow. A wing creates downforce. The two are totally different.

There are many sources that use the terms interchangeably. And while their mechanisms are indeed a little different, their outcomes are the same, more weight on the ground.
A spoiler reduces lift
A wing creates downforce.
They both increase the pressure on the ground.

But that brings us back to why we are here. What would you be trying to do to alter the highly aerodynamically tested of the Cybertruck?
Does anyone have any additional insight / wind tunnel testing that suggests how it can be made better.


OR, are they just cosmetic?

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