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Car Engines-Aerodynamics

14 posts by 11 people · 07 Jan 1997 - 12 Jan 1997

Rok And 07 Jan 1997#352401
Does anyone know how does car aerodynamics (Ford, Chevy,...) influence on your car?
> Does anyone know how does car aerodynamics (Ford, Chevy,...) influence > on your car? Chevys are better on superspeedways, because of nose design. Ford Thunderbirds are better on the short tracks due to their slightly shorter wheelbase.
Nick Totor 07 Jan 1997#352403
> > Does anyone know how does car aerodynamics (Ford, Chevy,...) influence > > on your car? > Chevys are better on superspeedways, because of nose design. Ford > Thunderbirds are better on the short tracks due to their slightly > shorter wheelbase. In Winston Cup racing, all the cars have the same wheelbase, which is 110 inches. Nick -- ______________________________________________________________ #6 & #94 in the quest for the Cup! My home away from home... http://www.mindspring.com/~ntotoro/ ______________________________________________________________
Quoted text (17 lines)> : > Does anyone know how does car aerodynamics (Ford, Chevy,...) influence > : > on your car? > : Chevys are better on superspeedways, because of nose design. Ford > : Thunderbirds are better on the short tracks due to their slightly > : shorter wheelbase. > After tweaking my Chevy Monte Carlo for Taladega, I tried the same set up > with the Pontiac. Immediately I gained close to 1 mile an hour at that > track. Quite a difference, but not sure exactly why. I certainly don't > slide up the banking when going into turn 3 at 206 as easily as in the > Chevy. It's like the Pontiacs have some extra down force without > sacrificing as much speed. I don't think it would hurt the game if > Papyrus would explain exactly how they designed the differences into the > cars. Or maybe Jim S. already talked about it and I missed it. Something > to add to the FAQ for sure. Anybody else? > Matt
I second this notion. Let's hear it! Mike
M. HA 07 Jan 1997#352405
: > Does anyone know how does car aerodynamics (Ford, Chevy,...) influence : > on your car? : Chevys are better on superspeedways, because of nose design. Ford : Thunderbirds are better on the short tracks due to their slightly : shorter wheelbase. After tweaking my Chevy Monte Carlo for Taladega, I tried the same set up with the Pontiac. Immediately I gained close to 1 mile an hour at that track. Quite a difference, but not sure exactly why. I certainly don't slide up the banking when going into turn 3 at 206 as easily as in the Chevy. It's like the Pontiacs have some extra down force without sacrificing as much speed. I don't think it would hurt the game if Papyrus would explain exactly how they designed the differences into the cars. Or maybe Jim S. already talked about it and I missed it. Something to add to the FAQ for sure. Anybody else? Matt
Jim Sokolo 08 Jan 1997#352583
On Tue, 07 Jan 1997 23:22:09 -0500, Mike Marshall >> [Question about aerodynamics of the cars in N2] >I second this notion. Let's hear it! I wasn't ignoring this thread, I just didn't know the answer off the top of my head. (And I *sometimes* like to find out the answer before I spout off... Sometimes.) The engines are all identical. The aerodynamic "efficiencies" are all identical. The differences in aerodynamics are solely in regards to the balance of downforce front vs rear. Ford has the most aerodynamic front downforce, Chevy the most aerodynamic rear downforce, and Pontiac is a more balanced downforce body. The reason some setups will work better on some chassis is the combination of suspension settings and aerodynamics. (A suspension setup which might be a little tight and bind the car up too much on a Chevy might loosen up just enough on one of the other makes to be faster. Likewise, a Ford setup that works well at Martinsville might push too badly on a Chevy...) The car makes are close enough in the game that a driver could win with any of them. (I won't get into whether that's really the case on Sunday Winston Cup racing in this newsgroup... ;-) ) ---Jim Sokoloff, Papyrus
Mike Radl 08 Jan 1997#352585
Regarding different chassis in Nascar2 Do you know if this is also true in Nascar1. Since NRO won't be out for a while I'm still looking for speed on Hawaii. Guess I could just try it :-) Mike Radler
Jim Sokolo 09 Jan 1997#352711
Quoted text (11 lines)>Regarding different chassis in Nascar2 >>The engines are all identical. >>The aerodynamic "efficiencies" are all identical. >>The differences in aerodynamics are solely in regards to the balance >>of downforce front vs rear. Ford has the most aerodynamic front >>downforce, Chevy the most aerodynamic rear downforce, and Pontiac is a >>more balanced downforce body. >Do you know if this is also true in Nascar1. Since NRO won't be out for a >while I'm still looking for speed on Hawaii. Guess I could just try it :-)
The same statements are true for NASCAR 1... ---Jim Sokoloff, Papyrus
<another excellent response snipped> I once again want to thank Jim for taking the time to keep us a*** on NASCAR2. It's not often that one finds this kind of attention from someone attached to a software or hardware company. It think it adds to the enjoyment of their product and shows those who don't have the product what kind of support they can expect. Also, it's just a delight to get some insights from someone who worked on the "inside" of a product. Thanks Jim, and don't let the turkeys get you down... -- **************************** Michael E. Carver ************************* Upside out, or inside down...False alarm the only game in town. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=<[ /./. [- < ]>=-=-=-=-=-=-=-=-=-=-=-=-=-=
>The aerodynamic "efficiencies" are all identical. >The differences in aerodynamics are solely in regards to the balance >of downforce front vs rear. Ford has the most aerodynamic front >downforce, Chevy the most aerodynamic rear downforce, and Pontiac is a >more balanced downforce body. Sorry to be the slow one.... But I do not understand this at all. Can you please re-phrase this and use more words and maybe an example? "Ford has the most aerodynamic front downforce" Does a more "aerodynamic" front mean it flows through the air with the least resistance and therefore provides the least amount of downforce? If I am using a ford setup and I have maximized the rear spoiler, will moving to a chevy setup give me more rear downforce? If I am using a chevy setup and I have maximized the rear spoiler, will moving to a ford setup give me more rear downforce? If I am using a ford setup and I have all the weight to the rear, will moving to a chevy setup give me more rear "weight?" If I am using a chevy setup and I have all the weight to the rear, will moving to a ford setup give me more rear "weight?" I suspect I am confusing terms here, so please explain. I also want to thank Jim for all the informative posts! -- Best Wishes!!! Robert Huggins Raleigh, NC
BillJZ 10 Jan 1997#352838
Yes... using AOL because of school vacation!
Jim Sokolo 10 Jan 1997#352839
>Sorry to be the slow one.... But I do not understand this at all. >Can you please re-phrase this and use more words and maybe an example? Sure. This means that the Ford body shape has more downforce due to the airflow over the car than the other body shapes. No, pretty much the exact opposite. Moving from a Ford body style (chassis) to a Chevy body style will do that (at the expense of less front downforce) No, it will give you less, but it will give you more front downforce. Doesn't have anything to do with mass, but it will place more aero load on the rear tires than you had with the Ford setup. In general, all other things being exactly equal, and the car running at a decent speed (so that aerodynamic flow is important), a Ford will be the "loosest", the Pontiac middle, and the Chevy tightest. However, changing car body styles is not an alternative to learning how to use the garage... :-) ---Jim Sokoloff, Papyrus
David Spark 12 Jan 1997#353136
Quoted text (12 lines)>>The aerodynamic "efficiencies" are all identical. >>The differences in aerodynamics are solely in regards to the balance >>of downforce front vs rear. Ford has the most aerodynamic front >>downforce, Chevy the most aerodynamic rear downforce, and Pontiac is a >>more balanced downforce body. >Sorry to be the slow one.... But I do not understand this at all. >Can you please re-phrase this and use more words and maybe an example? >"Ford has the most aerodynamic front downforce" >Does a more "aerodynamic" front mean it flows through the air with the >least resistance and therefore provides the least amount of downforce?
Actually, more aerodynamic front downforce means that the shape of the body creates more downforce on the front tires. The force is created by air pushing on the body, which in turn, slows the car down. What Jim said was that the all 3 bodies have the same "aerodynamic inefficiences", meaning that they all have the same coefficient of drag, provided that the spoiler settings are identical. It's just that the downforce is applied differently from car to car. If you use a Chevy, you will have more rear downforce, therefore better traction on the rear tires. The Ford is the opposite, with better traction on the front tires. The Pontiac has equal downforce front and rear. Yes. No. No. No. Don't confuse rear weight with rear downforce. Me, too! Dave Sparks IWCCCARS Project: http://www.theuspits.com/iwcccars/index.html Late Night League: http://www.sequoia-dev.com/Hawaii/latenite.html Hawaii Handle: davids

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