Radial Walk - Page 2

Tom Goldman · 01-02-2023, 11:37 AM

Something that's often overlooked with this problem is rear thrust . I've had several cars with this issue that squaring the rear axle in the chassis ended the wobble.
Unfortunately curing radial wobble is much like fixing the "death wobble " on Jeeps , there can be many causes from toe, caster , front to rear shock settings and even tire pressure..
I have also heard of trying the toe out solution , while I would NEVER recommend it ,if it solves the problem ,I would suspect tire pressure it be an issue.

Mike Pearson · 01-02-2023, 01:10 PM

Quote:

Originally Posted by GTX JOHN

1971 SS/KA 340 Duster
Low 10s when required
Both Goodyear and Hoosier

What pressure are you trying to run in the back tires.

GTX JOHN · 01-03-2023, 01:14 AM

Quote:

Originally Posted by Mike Pearson

What pressure are you trying to run in the back tires.

We have run from 12 to 19 in one-pound increments.

Before we had problems we ran 17 to 18 normally.

tommy d · 01-03-2023, 08:09 AM

We had that on my son's Chevy II when he first bought it. He said it didn't feel all that bad but watching it from the starting line was terrifying 😳. We just went back to bias ply.

Mike Pearson · 01-03-2023, 08:14 AM

Quote:

Originally Posted by GTX JOHN

We have run from 12 to 19 in one-pound increments.

Before we had problems we ran 17 to 18 normally.

12 is at the upper end of what I can run in my tires. Hoosier 13.5 x 31.5 radial sometimes it will rock and roll at the top end a bit but not every run and sometimes not at all at certain tracks. I Never run more that 12.5.

nhramnl · 01-06-2023, 04:07 PM

Fought it mightily on a very well-built Cavalier GT car. Tried everything and could never get completely rid of it. Was sent to Mike Crutchfield with the promise that Phoenix drive tires would eliminate the condition and they did.

GTX JOHN · 01-09-2023, 07:22 PM

I sure appreciate all the sage advice!!

This week we are rebuilding the front end again
and replacing the struts with some with Heim ends to help
adjustment ability.

We are going to put on rear roll bar as well.

Bob Sherwood · 01-13-2023, 01:45 AM

Hi John We have had this issue on several SS cars and by tightening up the front shocks , it eliminated the bounce or wobble. most racers run their front shocks on the lose side , I think. this was not at the launch, but going down track where the problem is ?? Thanks Bob

GTX JOHN · 01-14-2023, 03:38 AM

YES SIR:
Down track particularly 1000 FT. on.

01-02-2023, 11:37 AM	#11
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,439 Likes: 789 Liked 707 Times in 207 Posts	Re: Radial Walk Something that's often overlooked with this problem is rear thrust . I've had several cars with this issue that squaring the rear axle in the chassis ended the wobble. Unfortunately curing radial wobble is much like fixing the "death wobble " on Jeeps , there can be many causes from toe, caster , front to rear shock settings and even tire pressure.. I have also heard of trying the toe out solution , while I would NEVER recommend it ,if it solves the problem ,I would suspect tire pressure it be an issue. __________________ Tom Goldman 1500 SG , 1506 STK

01-03-2023, 08:09 AM	#14
tommy d Senior Member Join Date: Oct 2010 Location: Indiana Posts: 796 Likes: 1,409 Liked 318 Times in 119 Posts	Re: Radial Walk We had that on my son's Chevy II when he first bought it. He said it didn't feel all that bad but watching it from the starting line was terrifying 😳. We just went back to bias ply. __________________ Who owns this car, with the peace sign,mag wheels, and four on the floor?

01-06-2023, 04:07 PM	#16
nhramnl Senior Member Join Date: Feb 2010 Posts: 505 Likes: 7 Liked 354 Times in 83 Posts	Re: Radial Walk Fought it mightily on a very well-built Cavalier GT car. Tried everything and could never get completely rid of it. Was sent to Mike Crutchfield with the promise that Phoenix drive tires would eliminate the condition and they did.

01-09-2023, 07:22 PM	#17
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,555 Likes: 2,254 Liked 1,983 Times in 589 Posts	Re: Radial Walk I sure appreciate all the sage advice!! This week we are rebuilding the front end again and replacing the struts with some with Heim ends to help adjustment ability. We are going to put on rear roll bar as well. __________________ John Irving 741 Stock 741 Super Stock

01-13-2023, 01:45 AM	#18
Bob Sherwood Member Join Date: Jul 2006 Location: South Dakota Posts: 143 Likes: 67 Liked 334 Times in 52 Posts	Re: Radial Walk Hi John We have had this issue on several SS cars and by tightening up the front shocks , it eliminated the bounce or wobble. most racers run their front shocks on the lose side , I think. this was not at the launch, but going down track where the problem is ?? Thanks Bob

01-14-2023, 03:38 AM	#19
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,555 Likes: 2,254 Liked 1,983 Times in 589 Posts	Re: Radial Walk YES SIR: Down track particularly 1000 FT. on. __________________ John Irving 741 Stock 741 Super Stock