rpate27

I was just wondering what the coefficient of drag of the 1st gen tsx was. Tried to search but lost patience, sorry if this is a repeat thread.

lcrazyaznl

iTrader: (1)

I recall it being something near the nsx. Don't count me on that since i could be off and its been awhile.

buddylie

Drag coefficient is 0.27, which is very good for any car. It owes alot of this due to the attention paid to the undercarriage, as you can see if you take a peak underneath

SoCaliTrojan

TSX's coefficient of drag is 0.27. The NSX's coefficient of drag is 0.30.

Audioserf

I believe that figure is for the TSX without any lipkit installed. They did such a good job engineering the 1G TSX that I wouldn't be surprised if the lipkit actually worsens the number...

SoCaliTrojan

Yes, it's the number when it's in stock form. The lip kit should affect the number since its presence affects air flow. I'd expect it to increase drag slightly since it is a little lower than stock.

On flat ground, I can pop my 6MT into neutral and roll for a good couple of blocks (e.g., I just slice through the air). If there were no cars behind me, I could probably increase my MPG by alot...lol

HNDFRK

What I don't understand is why the new insight with its aerodynamic shape only gets a 0.28 Cd. The new Prius gets a 0.25 Cd.

lcrazyaznl

iTrader: (1)

Probably since they didn't have to do more R&D so they took a former platform and improved it.

muncher

http://en.wikipedia.org/wiki/Automob...g_coefficients

for comparison. .27 is really nice!

1Louder

.25 is nearly the best of any production car listed on the wiki page referenced above. Considering those cars are very particular about the drag, I think that speaks a lot to the design of the TSX.

ofusball21

I agree. Does anyone know if the 2G TSX is any different?

rpate27

wow the 1G tsx has the same drag coefficient as the GT-R. sweeeeet

nbtx

I attended an SAE presentation by a Honda aerodynamics engineer from Maryville OH a few months ago. Honda (and Acura, I suppose) do their aero design with computer modeling and they wring every bit of efficiency out of the body design possible. He showed how they optimize the outside mirrors, the underbody, the wheel and tire configurations and on and on. One of his slides showed the bottom of the first gen TSX - I know, I've been under it enough. Their modeling software is sophisticated enough to add ground movement into the calculations too. This technique supplants wind tunnel work which is extremely costly and time consuming.

The point being that any aero modifications you make to the vehicle are almost guaranteed to make things worse. Sorry ...

fanbanlo

how about the stock spoiler...?

tftimm

Did you go to the SAE Congress in Detroit? I was there and have been there now for 3 straight years. I bet that was a great presentation.

nbtx

No, this was a presentation at a meeting sponsored by Southwest Research Institute in San Antonio. SAE and AIAA group members were invited. The name of the presenter escapes me but he has a PhD in aerodynamics engineering.

godfather2

speaking of drag, any pics of tsx during wind tunnel testing?

nbtx

No. The presentation was primarily about Honda's computer modeling processes. They can get valid results much quicker and with less cost than with traditional wind tunnels. My guess is their next software iteration will specify minor shape changes to give even lower drag rather than engineering cut and try procedures.

TommySalami

ha, I wonder how much it raises my car's drag coefficient

TommySalami

what a coincidence, it turns out my old car, the Mazda6 has the same drag coefficient of 0.27. I guess I have a thing for aerodynamic cars