Jump to content
SAU Community

Recommended Posts

Has anyone really wondered why our R30 Skylines slip through the air so well?

Drag, down force, design etc all go to fuel efficiency, but do you know there is only one (1) Nissan with a better drag coefficient (Cd) than the R30 Skyline.

Cheers, D

Link to comment
https://www.sau.com.au/forums/topic/371296-slippery-r30s/
Share on other sites

Nobody got any ideas????????

I find this amazing!

Just imagine the McLaren F1 has a worse Cd than the R30!

The R30 has a drag coefficient (Cd) of 0.27

The 2007 GTR has a drag coefficent (Cd) of 0.27

The 2010 GTR has a 1/100th of a point better Cd at 0.26 and is the slipperiest Nissan ever built.

To put this figure into a bit of perspective, the R32 GTR has a Cd of 0.40, the R33 GTR 0.35, 280ZX @ 0.385, 1983 Z31 300ZX has 0.30, 1989 Z32 has 0.32, G37 Infinity coupe has 0.31 and both 350 & 370Z 's 0.30

Cheers, D

Link to comment
https://www.sau.com.au/forums/topic/371296-slippery-r30s/#findComment-5926100
Share on other sites

Better than you.LOL

I said RMR, ie, Hatchback. It aint an R30.:pirate:

Humble apologies my dear friend, but my wind tunnel test results don't differenciate between an EDR, KHR, RMR, or any other derivative, because I guess at the end of the day THEY ARE ALL R30's or have I got this wrong to :cheers:

Whilst I'm here does anyone know why the 2010 GTR has a slightly different Cd to it's predecessor?

Cheers, D

Link to comment
https://www.sau.com.au/forums/topic/371296-slippery-r30s/#findComment-5928154
Share on other sites

what's the CD for R34 GTR ... i am guessing not very good number

Just off the top of my head I would assume it would be quite reasonable, but I will check on it to confirm, but as the R34 was designed off the R30 I would think it might be quite good as I said.

Cheers, D

Link to comment
https://www.sau.com.au/forums/topic/371296-slippery-r30s/#findComment-5928161
Share on other sites

  • 5 months later...

Guys,

The Cd number is relevant, but it's only part of the story...

The actual drag force is calculated by D = Area x Cd x 1/2 * rho * (velocity)**2

rho is the air density and velocity squared is just that, speed mulitplied by itself.

The half rho v squared part will be the same no matter what the vehicle, so the difference in drag force comes down to Cd mulitplied by frontal area.

The McLaren has less frontal area than a Skyline R30 and so it will have a lower total drag force.

cheers,

Howard.

Link to comment
https://www.sau.com.au/forums/topic/371296-slippery-r30s/#findComment-6182904
Share on other sites

I hear ya hugh....

I always felt after 160km my old hatch would just nearly roll to 200... (off the dial and then some...)

shit i miss that car...

It will and I do too. Miss it.

Link to comment
https://www.sau.com.au/forums/topic/371296-slippery-r30s/#findComment-6183093
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Latest Posts

    • Seems like a decent result for a modded JZX110. They are bulky in comparison to the 100 and 90 models (which I'd prefer myself) but they are getting very few and far between here in JP these days. Thanks for the detailed review and the import process into the UK. I also have a car which I'm hoping to export from Japan at some stage so it's good to know if someone from the UK was interested in it. By the way the corrosion underneath is par for the course for cars which were located in/near the mountains or along the Japan sea coastline. They get huge amounts of snow every winter and the sodium chloride is used on the roads. Many cars have some kind of rubber like treatment underneath but they tend to limit it to the wheel arches underbody and fuel tank. Suspension arms and sub-frames will have similar corrosion to your JZX110 which is a common sight. See it all the time and car dealers here generally don't even mention it unless asked.
    • If the sound goes away when you clutch in, the 1.5/2 way diffs are just shit, and you are a normal person. The diff is likely "fine" but driving at anything under 30kmh is a violent horrible experience. It would be exaggerated with solid diff bushings and subframe bushings if you have those.
    • Trailer got new mudguards to accommodate the new wheels Lightweight ally Painted, stickered and done ✅ 👌  
    • Did you hit up the search function? R33 and greddy and cable returns this thread with some options.   https://www.sau.com.au/forums/topic/358214-rb25-throttle-body/
    • Thanks buddy.. the standard one needs to be about another inch or inch and a half longer. Thanks anyway
×
×
  • Create New...