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Old 12th June 2009, 14:27   #1
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Default Spoilers

This is a question that has always baffled me.

Why is a spoiler called a spoiler ??

WHat does it spoil ?

Kindly englighten me.

cheers,
ac
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Old 12th June 2009, 14:32   #2
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Default Spoils unfavourable air movement

Spoiler (automotive) - Wikipedia, the free encyclopedia

Quote:

A spoiler is an automotive aerodynamic device whose intended design function is to 'spoil' unfavorable air movement across a body of a vehicle in motion. Spoilers on the front of a vehicle are often called air dams, because in addition to directing air flow they also reduce the amount of air flowing underneath the vehicle which reduces aerodynamic lift. Spoilers are often fitted to race and high-performance sports cars, although they have become common on passenger vehicles as well. Some spoilers are added to cars primarily for styling purposes and have either little aerodynamic benefit or even make the aerodynamics

Hope that helps.

Last edited by Technocrat : 12th June 2009 at 14:39. Reason: Removed Color tags
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Old 12th June 2009, 14:37   #3
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It is called a spoiler because it "spoils" the streamlined flow of air in order to create downforce.

A friend of mine has another definition, she says its called a spoiler as it spoils the look of the car . she doesnt like cars with spoilers.
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Old 12th June 2009, 14:38   #4
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Good question. It disturbs the airflow hence is called a spoiler. Specifically it is supposed to spoil the turbulence. Can be used to increase the downforce or to giide more air into the hood/brakes.

Rear spoilers in a sedan are not very useful since the region behind the rear screen is a highly disturbed airflow. Thus they are almost totally cosmetic. The 'lip' on the top rear edge of a hatchback can be very effective, since it breaks up the turbulence behind the car, and thus reduces the drag and hence improves the fuel consumption.
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Old 12th June 2009, 14:46   #5
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Good thread! I never knew this and never cared to think about it!
Thanks for the info guys.
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Old 12th June 2009, 16:38   #6
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the average spoiler on indian cars fitted by some road side pappu is a spoiler because it's really pathetic!
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Old 12th June 2009, 18:41   #7
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Spoiler - spoils many things

- if not done properly - it spoils your car - your money - your mood - you get a feeling of being like a goat

- after a while it just looses its gumming or screws and becomes loose and hangs like dentures - again spoiling everything

- some cars have very weird spoilers - again spoiling everything mentioned in point 1.
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Old 6th September 2010, 18:37   #8
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Default Spoiler on Indica Vista

Hi

Please suggest if I can put a spoiler on Indica Vista.

I think it will look good and technically also, I don't think there is any issue.

Please please suggest.

-Ajay
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Old 6th September 2010, 19:55   #9
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After I fixed the spoiler on my Swift, a strange humming sound is coming which increases with speed. I wonder if this is due to the spoiler?? Any ideas anyone!!
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Old 6th September 2010, 20:16   #10
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Quote:
Originally Posted by buntydey View Post
After I fixed the spoiler on my Swift, a strange humming sound is coming which increases with speed. I wonder if this is due to the spoiler?? Any ideas anyone!!
Does the car have a carrier?If yes,that's the cause of the noise
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Old 6th September 2010, 20:25   #11
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Quote:
Originally Posted by vigsom View Post
Does the car have a carrier?If yes,that's the cause of the noise
Nope, its just the spoiler.. no carrier at all. Initially i thought that my tyres are running low on air, but checked it today, and still the sound remains. Just for info, my tyres are 2 months old Yoko A drives (185/70/14), so it is definitely not a case of bad tyres.
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Old 6th September 2010, 20:38   #12
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Spoilers are useful only when you approach high speeds,its only then when you can feel the downforce.And also spoilers are only effective when they are designed keeping that particular car in mind.Its not like one size fits all.In fact badly fitted spoilers increase your drag and also as a result the top speed and FE.

@buntydey yours is surely caused due to wind noise,just like any other protruding part of the car like the orvms.Is yours those small spoilers fixed to the top of the rear windscreen?
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Old 7th September 2010, 06:48   #13
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Quote:
Originally Posted by buntydey View Post
Nope, its just the spoiler.. no carrier at all. Initially i thought that my tyres are running low on air, but checked it today, and still the sound remains. Just for info, my tyres are 2 months old Yoko A drives (185/70/14), so it is definitely not a case of bad tyres.
If you could post a pic,maybe a solution would emerge
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Old 7th September 2010, 08:11   #14
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Red face

Spoilers spoil the look of the car, period.

Esp the rear spoilers, actually havent seen any front spoilers. On highways agreed that some aerodynamics are involved but in city drive, no chance.

I have seen some hideous looking spoilers on Mumbai roads, fail to understand the logic on installing one.
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Old 7th September 2010, 08:22   #15
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At high speeds the shape of a Car is like an Aerofoil. aerofoil - Google Search
An upward force or Lift as it is called in Aviation is generated. This acts through the CG and is countered by the weight of the Car.

At sufficiently high speed this lift will be greater than weight. ( I dont know but I have always assumed that the car loses its road grip when this happens)

A Spoiler spoils the airflow bringing the Seperation point of the Airflow forward thereby Spoiling the Lift and hence stay on the ground.

Some pro Mechanics can help clarify if this assumption is right.
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