1962 'Hel's Angel' by Knot Farrington

[aerohead]

We were discussing this car last week and I thought a dedicated thread would keep it accessible.
The car appeared in the June, 1962, HOT ROD Magazine, pp 76-79,94, and 96.
Here are some data:
* 1956 Ford Thunderbird roadster
* 1967 Chrysler Hemi, 392 CID, stroked to 429 CID, maximum 5,900 rpm, 8.5-1 CR.
* Hillborn mechanical fuel injection
* GMC 6-71 supercharger, with 1.18:1 step-up drive gearing, manifold pressure unspecified
* Gasoline fuel, 6.139-pounds/gallon, 124,376-Btu / gallon
* Brake horsepower is unspecified
* Ford synchromesh transmission.
* Rear wheel drive
* Hallibrand quick-change differential, with Positraction
* 15-inch Hallibrand magnesium racing wheels
* FIRESTONE Bonneville Speedway racing tires 7.60/15 traction @ rear
* 60-psi all four tires
* 5-gallon fuel tank
* 10-gallon auxiliary coolant tank in tail
* Street legal electrical system , lights, horn, etc.. as per SCTA rules
* Wheelbase- 102.0-inches
* Length- 200.72-inches est
* Height- 43.57-inches est
* Width- 63.14-inches est
* Ground clearance- 4.03-inches est
* Wiper delete
* Mirror delete
* Door handle delete
* Windshield delete
* Rounded nose added
* Grille-block, minimum opening
* Cabin tonneau cover
* Streamlined rollbar/ head fairing
* half-bubble canopy
* Blended intake scoop
* Full belly pan
* full rear skirts
* 36-inch boat tail
* Length / Height = 4.6068 est
* Length / height = 5.0763 est
* Length / Width = 3.1789 est
* Length / sq-root of Af = 4.2873 est
* Local air density 0.002183 slugs ( working number from Volkswagen )
* Race weight = 2700-pounds est
* Coefficient of rolling force on the salt = 0.046368162 ( from Volkswagen )

* Cd 0.18 est ( Walter Korff )
* Frontal projected area 18.184-sq-ft est
------------------------------------------------------------------------------------
* Highest, one-way pass = 228.570-mph, 335.236 ft/sec, 20,114.16 linear feet/ minute
* Final drive = 2.22:1
* Drive axle = 2,657-rpm
* Tire circumference= 7.56838-feet, 90.8205-inches, 28.909-inch diameter
* Aerodynamic horsepower = 244.723 est
* Rolling resistance horsepower = 76.308 est
* Road Load HP = 321.031 est
* Brake horsepower = 359.0422 est
--------------------------------------------------------------------------------------
* The ROOTs-type blower pressure ratio is an unknown
* Air delivery volume is an unknown
* Air delivery discharge temperature is an unknown
* The blowers adiabatic efficiency is an unknown
* Blower drive efficiency given @ 95%
* Blower cannibalistic power absorption is an unknown
* A/F ratio is an unknown
* Engine enthalpy efficiency @ 5,900 rpm is an unknown
* Engine volumetric efficiency @ 5,900 rpm is an unknown
* Engine BSFC @ 5,900 rpm under load is an unknown
* Gross horsepower is an unknown
* Fuel consumption is an unknown
That's all I've got.

[freebeard]

I know you like the reshaped nose. My thinking is that if he had started with a 1960 Falcon, the nose would be already half-done (no headlights to shave off). And that's the platform that became the Mustang.

[aerohead]

Originally Posted by freebeard

I know you like the reshaped nose. My thinking is that if he had started with a 1960 Falcon, the nose would be already half-done (no headlights to shave off). And that's the platform that became the Mustang.

The Falcon ( Cd 0.45 ) had a lot lower drag than the T-bird ( Cd 0.70 ) going in, but I'm gonna guess that the Sports Car Class, with the ability to lose the windshield was very attractive, frontal area-wise.
'Competition Sports Cars' , according to Korff were already below Falcon, @ Cd 0.42.
The jump to Streamlined Competition Sports Car went to Cd 0.20.
The final leap to Streamliner was Cd 0.16 or lower ( MG EX-181 )
Three years later, Korff's Goldenrod would eclipse the MG, with Cd 0.117, and 409+ mph.

[kach22i]

PDF to article referenced:
https://www.google.com/url?sa=t&rct=...zGbhonvLo6T_E_

Also see post #8
https://www.jalopyjournal.com/forum/...-pics.1051340/