If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
E46 roof spoiler
Why do I need one?
2001 330 ci SP not convertible |
Ads |
#2
|
|||
|
|||
I don't know, why do you need one?
"sgfan3" > wrote in message ... > Why do I need one? > > 2001 330 ci SP not convertible > |
#3
|
|||
|
|||
Funny! But seriously, why do they even exist? Do they actually help the
air flow over the top? I would think that the smoother lines (without the spoiler) would flow the best. "Jeff Strickland" > wrote in message ... >I don't know, why do you need one? > > > > "sgfan3" > wrote in message > ... >> Why do I need one? >> >> 2001 330 ci SP not convertible >> > |
#4
|
|||
|
|||
On Fri, 30 Sep 2005 22:41:13 -0400, "sgfan3" >
wrote: >Funny! But seriously, why do they even exist? Do they actually help the >air flow over the top? I would think that the smoother lines (without the >spoiler) would flow the best. > A spoiler directs airflow, not improves it - it's chief use at the rear of a car is to increase downforce; to make the air push down on the car. A high speeds, the air moving under the car can create enough lift to make the car unstable and hard to control, since you're essentially creating hurricane-speed winds under and around the car. A front air-dam reduces the air moving under the car, while the rear spoiler interrupts the flow and causes it to push down on the car, counteracting the lift. So, do you need one? Definitely, if you're regularly driving at over 120 mph. At normal US traffic speeds, not so much. Lowering the car to Euro specs (are they different anymore?) would make the car stable up to Autobahn speeds, since that's what the car was designed to handle. You might notice a slight improvement in handling with a rear spoiler at such speeds, but you still wouldn't *need* a spoiler. Emanuel -- 2003 BMW 325i Black/Black 2003 BMW Z4 Black/Black |
#5
|
|||
|
|||
"E Brown" > wrote
> "sgfan3" > wrote: > >>Funny! But seriously, why do they even exist? Do they actually help the >>air flow over the top? I would think that the smoother lines (without the >>spoiler) would flow the best. >> > A spoiler directs airflow, not improves it - it's chief use at the > rear of a car is to increase downforce; to make the air push down on > the car. Except the OP is talking about a *ROOF* sunroof deflector, which is an entirely different subject than you are talking about. FloydR |
#6
|
|||
|
|||
Yes. I'm referring to the roof spoiler. Maybe the two spoilers work together
for optimum airflow? Could it be that they "engineered-in" an aerodynamic flaw so they could sell an accessory "fix" later ( to increase the bottom line)? Shrewd marketing perhaps? Does it extend very far over the rear window and act as a sun visor? "Floyd Rogers" > wrote in message ... > "E Brown" > wrote >> "sgfan3" > wrote: >> >>>Funny! But seriously, why do they even exist? Do they actually help >>>the >>>air flow over the top? I would think that the smoother lines (without the >>>spoiler) would flow the best. >>> >> A spoiler directs airflow, not improves it - it's chief use at the >> rear of a car is to increase downforce; to make the air push down on >> the car. > > Except the OP is talking about a *ROOF* sunroof deflector, which > is an entirely different subject than you are talking about. > > FloydR |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
how useful is that spoiler on my 96 GT vert? | Scotter | Ford Mustang | 28 | April 27th 05 12:24 AM |
Honda Spoiler | TGallo | Honda | 0 | March 31st 05 04:18 AM |
Going convertible. Chop roof and... HELPPPP! | Manuel Macedo | VW air cooled | 11 | February 25th 05 01:00 PM |
Roof Bars for AR 166 from Cooks Motor Spares | dj | Alfa Romeo | 3 | October 9th 04 11:02 AM |
Advice on fitting Rear Spoiler to A4 Please | Gary Murison | Audi | 1 | July 5th 04 05:55 AM |