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want opinion on stock rear flow
I would like to ask for opinions regarding stock rear window configurations and rear decking of totally stock vehicles of the 60's and early 70's.
Right off the bat, I can only think of a few clean ones...
'67-69 'Cuda fastback
'68,69 Torino fastback
'66,67 Dodge Charger
'65-73 Mustang fastbacks
'68,69 Mercury Cyclones
'70-73ish Ford Mavericks
'71,72 Datsun 1200
mid late 70's Datsun B210
Stude Avante's???
'75-80 Chev. Monza with other GM variants..Skyhawk, Olds version, Pontiac version.
Mustang II fastback?
all Datsun Z cars of 1st gen. except 2 +2's??
what else guys????????????????????????
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Where I see they got the back right, they really screwed the pooch at the windscreen to roof transition. I know it's heresy to say it, but the front matters, the back can be perfect but if the air is doing cartwheels when it gets there, then the back isn't going to be very effective. It becomes the lipstick on a pig at that point.
Contrast that to the modern best aero MB CLA with a debatable .22 Cd and you see an amazingly gradual transition in this area. Most modern cars with good aero have this characteristic.
PS I have comparisons of some of the other cars mentioned,but they're not scanned yet.I'll get that done when back from the trip.
There is a very good video of a Dodge Daytona on You-Tube from the AeroDyn tunnel at Mooresville,N.C..In it you can see the separation bubble over the backlight with the smoke wand,and then reattachment at the boot.
The race Daytona achieved Cd 0.28,really good for 1968.
R.G.S.White did not publish his Cd 0.245 car 'recipe' until this time,and Hucho et al. did not publish about VW's aero detail optimization until the mid-70s.
As ChazInMt has mentioned,some of these car's forebodies were so dirty that they compromised aft-body flow tremendously.High lift and instability over 100 mph.
Good thread topic,thanks!
want opinion on stock rear flow
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