DodgeCharger.com Forum
October 20, 2018, 02:29:27 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: I have updated the list of DodgeCharger.com shirts!
 
   Home   Help Calendar Login Register Chat  
Pages: [1]   Go Down
  Print  
Author Topic: Superbird speed.  (Read 1060 times)
Kjellemopar
New Member
*
Offline Offline

Posts: 4


« on: August 06, 2018, 12:30:34 PM »

Hi.
What speed do you like to go with your Superbird? I Think 60-65 miles is acceptable then it start to be unpleasant. I have polyglass tire with 30 psi tire pressure.
Logged
DAY CLONA
Old Timer
*****
Offline Offline

Posts: 1,710


« Reply #1 on: August 06, 2018, 02:02:24 PM »

If you get rid of the Polyglass tires you might enjoy some higher speeds, I'm limited to 140 ish MPH (225KM) with the 5spd .64 OD and 4:10 gears in my Daytona on modern radials, kinda wish I put the 6 spd in....I'd enjoy 160-170
Logged

still winging it at www.officialdayclona.com
cudavic
Junior Member
**
Offline Offline

Posts: 64


« Reply #2 on: August 06, 2018, 02:23:14 PM »

Get rid of the polyglass tires for driving, use them for show only.
Replace them with a good set of radials and check the front end alignment.

Polyglass tires - the road surface drives the car Vs. radials where you are in control.
Logged
odcics2
Old Timer
*****
Offline Offline

Posts: 3,149



« Reply #3 on: August 06, 2018, 03:06:16 PM »

Almost 200 mph going into Turn 3 at Talladega on bias ply tires. 

Those guys had some stones!   coolgleamA

Logged

I've never owned anything but a MoPar. Can you say that?
DAY CLONA
Old Timer
*****
Offline Offline

Posts: 1,710


« Reply #4 on: August 06, 2018, 08:10:42 PM »

Almost 200 mph going into Turn 3 at Talladega on bias ply tires.  

Those guys had some stones!   coolgleamA




No "stones", just the only tire choice they had....  scratchchin icon_smile_big
Logged

still winging it at www.officialdayclona.com
odcics2
Old Timer
*****
Offline Offline

Posts: 3,149



« Reply #5 on: August 07, 2018, 09:27:19 AM »


Hanging it out....

https://www.youtube.com/watch?v=4ScdQ0Pi2V4

Can't do that on radials.
Logged

I've never owned anything but a MoPar. Can you say that?
DAY CLONA
Old Timer
*****
Offline Offline

Posts: 1,710


« Reply #6 on: August 07, 2018, 09:37:38 AM »


Hanging it out....

https://www.youtube.com/watch?v=4ScdQ0Pi2V4

Can't do that on radials.



Street "radials" no, but modern race tires are radials in nature
Logged

still winging it at www.officialdayclona.com
cudavic
Junior Member
**
Offline Offline

Posts: 64


« Reply #7 on: August 08, 2018, 07:34:26 AM »

Almost 200 mph going into Turn 3 at Talladega on bias ply tires.  

Those guys had some stones!   coolgleamA




No "stones", just the only tire choice they had....  scratchchin icon_smile_big

Correct!

The 1969 Drivers' Strike Made Talladega Track Famous.

For one unsettling weekend in 1969, stock car racing behaved like other major-league sports. Unhappy with working conditions, its brightest stars went on strike.
Not surprisingly, Richard Petty was among them.

On Sept. 11, three days before its inaugural Winston Cup race, the Alabama International Motor Speedway opened at Talladega. Wide, high-banked and looming 2.66 miles, it was America's longest and fastest speedway.
But it's freshly-laid asphalt was uncommonly hard on tires. In some cases, good tires were coming apart after just 20 laps.
``It wasn't the companies' fault,'' Petty says. ``They just hadn't had enough time to develop a fast and safe tire for the track.''
Several drivers showed NASCAR president Bill France their shredded tires and implored him to delay the opening race until tire manufacturers could build better tires. When he refused, 37 drivers withdrew their entries.

The Firestone Tire and Rubber Co. withdrew its tires Saturday afternoon, leaving drivers no choice but to run Goodyear.
Unmoved, France ordered the race run as scheduled. It featured Bobby Isaac and Tiny Lund and several fringe Winston Cup drivers. In a race slowed every 25 laps for pit stops, Richard Brickhouse got his only NASCAR victory.
Logged
cudavic
Junior Member
**
Offline Offline

Posts: 64


« Reply #8 on: August 08, 2018, 08:07:20 AM »

An article from Hemming.

https://www.hemmings.com/hmw/bias-ply-or-radial-tires.html

"Bias ply tires are strong, but the rigidity offers some interesting handling characteristics if you’re accustomed to driving on radial tires. The rigid construction means that bias ply tires do not conform to the road surface as efficiently as a radial tire. This creates a “wandering” sensation, as the tires tend to follow the ruts and breaks in the pavement. This wandering is not hazardous, but it definitely requires the driver to pay more attention, especially at highway speeds.

The major advantage to a bias ply tire that completely overrides the finicky handling is the authenticity. Bias ply tires were used on American automobiles until the ‘70s, so if you’re building a car from that era, a bias ply tire is an appropriate choice. Coker Tire offers bias ply tires in many authentic brands, such as Firestone, BFGoodrich, U.S. Royal and more. Furthermore, Coker Tire refurbishes original molds and manufactures the tires using original methods with modern rubber and cord materials."

Logged
Charger_Fan
Old Timer
*****
Offline Offline

Posts: 10,291


Undercover Charger


« Reply #9 on: August 08, 2018, 03:43:19 PM »


Hanging it out....

https://www.youtube.com/watch?v=4ScdQ0Pi2V4

Can't do that on radials.
Holy shit! Look at 8:22 in that video...until today, I had no idea that Marty Robbins raced NASCAR!  Shocked Looks like he didn't do all that great in his racing career, but it's still cool.  2thumbs
Logged

odcics2
Old Timer
*****
Offline Offline

Posts: 3,149



« Reply #10 on: August 13, 2018, 07:25:28 PM »


Hanging it out....

https://www.youtube.com/watch?v=4ScdQ0Pi2V4

Can't do that on radials.



Street "radials" no, but modern race tires are radials in nature

Yes, they use radials in Nascar, but you can't hang it out like a bias ply.   
Logged

I've never owned anything but a MoPar. Can you say that?
steve817
New Member
*
Offline Offline

Posts: 19


« Reply #11 on: August 20, 2018, 09:00:52 PM »

Modern radial tires and install the most awesome 855 true bolt in 5 speed. Then go out and drive as fast as you want! For an 855 transmission, call 307-262-0125.
Logged
odcics2
Old Timer
*****
Offline Offline

Posts: 3,149



« Reply #12 on: August 25, 2018, 06:21:18 AM »

Modern radial tires and install the most awesome 855 true bolt in 5 speed. Then go out and drive as fast as you want! For an 855 transmission, call 307-262-0125.

Not needed.  Bias plies and a MoPar 23 spline 4 speed got Isaac to 217 on the Salt Flats in 1971 !
Certainly, that's fast enough! 
 coolgleamA

Logged

I've never owned anything but a MoPar. Can you say that?
hemi68charger
Old Timer
*****
Offline Offline

Posts: 11,800


Winged Duo..


« Reply #13 on: August 25, 2018, 07:12:27 AM »

To the gist of the thread... The speed of it all depends on what tires you have, the wheels you have and how they are balanced. Those bias-ply are fine on the highway at cruising speed from my past experience. My experience with fancy reproduction goodyear bias-ply is they SUCK for a lot of cruising... I got rid of those things and bought 255/60R/15's and enjoy the car so much better.. At any speed on the street.....

 Twocents
Logged

Troy
'69 Charger Daytona 440 auto 4.10 Dana ( now 426 HEMI )
'70 Plymouth Superbird, 440 4-speed 3.54 Dana
Houston Mopar Club Connection
odcics2
Old Timer
*****
Offline Offline

Posts: 3,149



« Reply #14 on: August 25, 2018, 08:16:24 AM »

The repops you had were bias-belted tires.  (raised white letter??)

Old Goodyear race tires, like Isaac ran, were bias ply, not bias-belted.

As usual, the quality of repop anything is questionable here.   

In the 'old days' of the 70s, I ran Goodyear tires, bias and bias-belted, over the century mark with no issues.
Logged

I've never owned anything but a MoPar. Can you say that?
1969daytona
New Member
*
Offline Offline

Posts: 27


Dodge Fever


« Reply #15 on: September 02, 2018, 01:30:52 AM »

Hi.
What speed do you like to go with your Superbird? I Think 60-65 miles is acceptable then it start to be unpleasant. I have polyglass tire with 30 psi tire pressure.

Are they old?

I have had my car floored on a racetrack many times. Have 3.55 in the rear so i am only get 120/130 (mph) on the straights and for a short time.
The tires was fine but my real big issue is that the brakes heated up very fast.

Mine is repro Poly GT run with 35psi. But they was only 1-2yrs old when i had track time.

K-E
Logged

1964 Fargo D400
1966 Imperial Crown 4d.ht
1967 Dodge Coronet 2d.ht
1970 Dodge Dart 4dr
1970 Dodge Coronet 2d.ht
1978 Plymouth Volare Kit Car
1978 Dodge Lil Red Express
1979 Plymouth Volaré 2dr
1997 Dodge Ram 2500 c.cab
2005 Dodge SRT-10 Yellow fever
2016 Jeep Wrangler 4d
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
Page created in 0.059 seconds with 16 queries.