Stupid things non petrolheads say....

Stupid things non petrolheads say....

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big_boz

1,684 posts

209 months

Tuesday 20th November 2012
quotequote all
akaRob said:
I know a chap who's 'into his cars' as they put it but really they're into money. Recently they bought a sub 2k 4 pot convertable for no reason other than to show off how wealthy they are (appear to be). Next thing a V8 badge appeared on its boot (classy) and aftermarkey DRLs on order (wooow) but the best bit was the 'V8 XXX' format reg that was purchased for £300. The car is an P reg. Whoops!!! I keep asking why it isn't on the car... Not had time to transfer apparently.

Edited by akaRob on Tuesday 20th November 13:52
You can re-post this in the "One single thing that makes you think "knob" " thread.

The number of Audi RS4's that knock about in Bradford with no body kit, raised ride height and stinking of Diesel often with a taxi license on is phenominal

GBB

1,737 posts

161 months

Tuesday 20th November 2012
quotequote all
akaRob said:
I know a chap who's 'into his cars' as they put it but really they're into money. Recently they bought a sub 2k 4 pot convertable for no reason other than to show off how wealthy they are (appear to be). Next thing a V8 badge appeared on its boot (classy) and aftermarkey DRLs on order (wooow) but the best bit was the 'V8 XXX' format reg that was purchased for £300. The car is an P reg. Whoops!!! I keep asking why it isn't on the car... Not had time to transfer apparently.

Edited by akaRob on Tuesday 20th November 13:52
I've £100 here for it if he needs rid fast. Will go nicely on my 535, I decided the money asked for anything close to what I wanted wasn't worth it. smile

cv01jw

1,136 posts

197 months

Tuesday 20th November 2012
quotequote all
I’m a little concerned that this post might backfire on me, however I think I am correct, so I will plough on.

My little lad recently asked me why the ‘thing’ on the back of our Volvo is called a spoiler and yet the same ‘thing’ on a racing car is called a wing. I tried explaining it to him (simplified a lot - he is five) along the lines that a spoiler is designed to make the air flow over the car more easily, which decreases the drag coefficient of the car and thus improves economy, whereas a wing is designed to produce downforce and therefore increase grip.

I was then laughed at by my father in law, who told me I was completely wrong and that spoilers and wings were the same thing and the names were interchangeable – they have nothing to do with improving aerodynamics and are purely there to improve grip. He did caveat that with a statement saying most wings/spoilers are only for show, but then went on to say his Legacy has a wing on it to improve grip when cornering, and that it makes a massive difference. It is a standard UK Legacy estate with a 2 litre boxer diesel engine.

Baryonyx

18,035 posts

161 months

Tuesday 20th November 2012
quotequote all
Back to the old one you always get when you have a car with a big engine:

"how much does that cost to fill up?"

"Plenty, it's got a 90 litre tank - though you're probably more interested in how many miles it does to the gallon, yes?"

GroundEffect

13,864 posts

158 months

Tuesday 20th November 2012
quotequote all
Baryonyx said:
Back to the old one you always get when you have a car with a big engine:

"how much does that cost to fill up?"

"Plenty, it's got a 90 litre tank - though you're probably more interested in how many miles it does to the gallon, yes?"
I bet there's a lot of people that think all cars go the same distance, but it's just the amount it costs to fill up that changes.

I'm sure of it.

I have no faith in humanity when it comes to anything remotely logic-based.

Robb F

4,578 posts

173 months

Tuesday 20th November 2012
quotequote all
cv01jw said:
I’m a little concerned that this post might backfire on me, however I think I am correct, so I will plough on.

My little lad recently asked me why the ‘thing’ on the back of our Volvo is called a spoiler and yet the same ‘thing’ on a racing car is called a wing. I tried explaining it to him (simplified a lot - he is five) along the lines that a spoiler is designed to make the air flow over the car more easily, which decreases the drag coefficient of the car and thus improves economy, whereas a wing is designed to produce downforce and therefore increase grip.

I was then laughed at by my father in law, who told me I was completely wrong and that spoilers and wings were the same thing and the names were interchangeable – they have nothing to do with improving aerodynamics and are purely there to improve grip. He did caveat that with a statement saying most wings/spoilers are only for show, but then went on to say his Legacy has a wing on it to improve grip when cornering, and that it makes a massive difference. It is a standard UK Legacy estate with a 2 litre boxer diesel engine.
No, you're spot on. Although he is right about most of them being largely redundant (when road driving)

vinnie83

3,367 posts

195 months

Tuesday 20th November 2012
quotequote all
Robb F said:
cv01jw said:
I’m a little concerned that this post might backfire on me, however I think I am correct, so I will plough on.

My little lad recently asked me why the ‘thing’ on the back of our Volvo is called a spoiler and yet the same ‘thing’ on a racing car is called a wing. I tried explaining it to him (simplified a lot - he is five) along the lines that a spoiler is designed to make the air flow over the car more easily, which decreases the drag coefficient of the car and thus improves economy, whereas a wing is designed to produce downforce and therefore increase grip.

I was then laughed at by my father in law, who told me I was completely wrong and that spoilers and wings were the same thing and the names were interchangeable – they have nothing to do with improving aerodynamics and are purely there to improve grip. He did caveat that with a statement saying most wings/spoilers are only for show, but then went on to say his Legacy has a wing on it to improve grip when cornering, and that it makes a massive difference. It is a standard UK Legacy estate with a 2 litre boxer diesel engine.
No, you're spot on. Although he is right about most of them being largely redundant (when road driving)
So what is the thing on the back of my 997 turbo, a spoiler or a wing? - it rises as the speed gets past IIRC 70 - I always assumed that it rose to increase downforce? (puts on flame suit)

GroundEffect

13,864 posts

158 months

Tuesday 20th November 2012
quotequote all
Robb F said:
cv01jw said:
I’m a little concerned that this post might backfire on me, however I think I am correct, so I will plough on.

My little lad recently asked me why the ‘thing’ on the back of our Volvo is called a spoiler and yet the same ‘thing’ on a racing car is called a wing. I tried explaining it to him (simplified a lot - he is five) along the lines that a spoiler is designed to make the air flow over the car more easily, which decreases the drag coefficient of the car and thus improves economy, whereas a wing is designed to produce downforce and therefore increase grip.

I was then laughed at by my father in law, who told me I was completely wrong and that spoilers and wings were the same thing and the names were interchangeable – they have nothing to do with improving aerodynamics and are purely there to improve grip. He did caveat that with a statement saying most wings/spoilers are only for show, but then went on to say his Legacy has a wing on it to improve grip when cornering, and that it makes a massive difference. It is a standard UK Legacy estate with a 2 litre boxer diesel engine.
No, you're spot on. Although he is right about most of them being largely redundant (when road driving)
Yep. Spoilers are literally there to spoil the airflow regime. They are designed to reduce drag OR reduce lift/improve stability.



cv01jw

1,136 posts

197 months

Tuesday 20th November 2012
quotequote all
Robb F said:
No, you're spot on. Although he is right about most of them being largely redundant (when road driving)
Thanks smile Usually he is correct and so I was doubting myself a little.

GokTweed

3,799 posts

153 months

Tuesday 20th November 2012
quotequote all
Why on the back of boxters and, i think, caymans does the spoiler/wing/whatever rise on a block of metal about as aerodynamic as a brick?

bicycleshorts

1,939 posts

163 months

Tuesday 20th November 2012
quotequote all
GroundEffect said:
Baryonyx said:
Back to the old one you always get when you have a car with a big engine:

"how much does that cost to fill up?"

"Plenty, it's got a 90 litre tank - though you're probably more interested in how many miles it does to the gallon, yes?"
I bet there's a lot of people that think all cars go the same distance, but it's just the amount it costs to fill up that changes.

I'm sure of it.

I have no faith in humanity when it comes to anything remotely logic-based.
Indeed, someone once said to me they were happy with their new car as it cost less to fill up than the old one...

cv01jw

1,136 posts

197 months

Tuesday 20th November 2012
quotequote all
vinnie83 said:
So what is the thing on the back of my 997 turbo, a spoiler or a wing? - it rises as the speed gets past IIRC 70 - I always assumed that it rose to increase downforce? (puts on flame suit)
I think you are correct - it is a wing. I would argue a 997 Turbo is a long way from a run of the mill roadcar though.

GroundEffect

13,864 posts

158 months

Tuesday 20th November 2012
quotequote all
GokTweed said:
Why on the back of boxters and, i think, caymans does the spoiler/wing/whatever rise on a block of metal about as aerodynamic as a brick?
That's not how aerodynamics works. They are there specifically to change the airflow, so the 'block' is part of the design.


GokTweed

3,799 posts

153 months

Tuesday 20th November 2012
quotequote all
GroundEffect said:
GokTweed said:
Why on the back of boxters and, i think, caymans does the spoiler/wing/whatever rise on a block of metal about as aerodynamic as a brick?
That's not how aerodynamics works. They are there specifically to change the airflow, so the 'block' is part of the design.
How does it help anything?

GroundEffect

13,864 posts

158 months

Tuesday 20th November 2012
quotequote all
GokTweed said:
GroundEffect said:
GokTweed said:
Why on the back of boxters and, i think, caymans does the spoiler/wing/whatever rise on a block of metal about as aerodynamic as a brick?
That's not how aerodynamics works. They are there specifically to change the airflow, so the 'block' is part of the design.
How does it help anything?
In many cases with flow near the boundary layer (I haven't seen the airflow on a Boxster at high speed) you want the flow to detach to reduce lift. By having this large disturbance you can force it to do so. It's not the most elegant design for ensuring aero stability but the body stylists are our gods, I'm afraid.

xRIEx

8,180 posts

150 months

Tuesday 20th November 2012
quotequote all
GokTweed said:
GroundEffect said:
GokTweed said:
Why on the back of boxters and, i think, caymans does the spoiler/wing/whatever rise on a block of metal about as aerodynamic as a brick?
That's not how aerodynamics works. They are there specifically to change the airflow, so the 'block' is part of the design.
How does it help anything?
I'm guessing the air exerts a force on the spoiler (given the shapes and angles of the boxster and the spoiler) creating downforce.

GokTweed

3,799 posts

153 months

Tuesday 20th November 2012
quotequote all
GroundEffect said:
GokTweed said:
GroundEffect said:
GokTweed said:
Why on the back of boxters and, i think, caymans does the spoiler/wing/whatever rise on a block of metal about as aerodynamic as a brick?
That's not how aerodynamics works. They are there specifically to change the airflow, so the 'block' is part of the design.
How does it help anything?
In many cases with flow near the boundary layer (I haven't seen the airflow on a Boxster at high speed) you want the flow to detach to reduce lift. By having this large disturbance you can force it to do so. It's not the most elegant design for ensuring aero stability but the body stylists are our gods, I'm afraid.
I bet it creates a st load of drag. Sorry but with my limited knowledge of aerodynamics etc. i'd tend to think if it doesn't look right it probably doesn't work properly

AlfaDogvan

2,240 posts

156 months

Tuesday 20th November 2012
quotequote all
cv01jw said:
vinnie83 said:
So what is the thing on the back of my 997 turbo, a spoiler or a wing? - it rises as the speed gets past IIRC 70 - I always assumed that it rose to increase downforce? (puts on flame suit)
I think you are correct - it is a wing. I would argue a 997 Turbo is a long way from a run of the mill roadcar though.
Maybe talking out my arse, but I thought its primary function was to improve engine cooling at speed?

ADV

Captain Muppet

8,540 posts

267 months

Tuesday 20th November 2012
quotequote all
GokTweed said:
GroundEffect said:
GokTweed said:
GroundEffect said:
GokTweed said:
Why on the back of boxters and, i think, caymans does the spoiler/wing/whatever rise on a block of metal about as aerodynamic as a brick?
That's not how aerodynamics works. They are there specifically to change the airflow, so the 'block' is part of the design.
How does it help anything?
In many cases with flow near the boundary layer (I haven't seen the airflow on a Boxster at high speed) you want the flow to detach to reduce lift. By having this large disturbance you can force it to do so. It's not the most elegant design for ensuring aero stability but the body stylists are our gods, I'm afraid.
I bet it creates a st load of drag. Sorry but with my limited knowledge of aerodynamics etc. i'd tend to think if it doesn't look right it probably doesn't work properly
I read "Competition Car Downforce: A Practical Guide" by Simon McBeath and it cleared all this sort of stuff up.

Sometimes it's better to read a book and understand something than to poke at it with a stick and say it's wrong.

big_boz

1,684 posts

209 months

Tuesday 20th November 2012
quotequote all
Captain Muppet said:
Sometimes it's better to read a book and understand something than to poke at it with a stick and say it's wrong.
Na this is Piston heads!
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