Death wobble - need to fix quick!

Questions about 4WDs and related topics

Moderators: FORDification, Doug Comer

User avatar
averagef250
100% FORDified!
100% FORDified!
Posts: 4387
Joined: Fri Mar 17, 2006 12:58 am
Location: Oregon, Beavercreek

Re: Death wobble - need to fix quick!

Post by averagef250 »

I think you're going to see more sideways axle movement using crossover on your truck because you have longer shackles with the superduty springs.

FWIW I ran a 92 balljoint 60 under my '70 for awhile using the tie rod and drag link from the 92 F-350 and it worked fine with 4" springs, there was no problem with it except for using the 2wd Ford steering box which sucked.

Dana steering arms are forged steel, nothing particularly special. You could pull the steering arm/kingpin cap and cut the arm off and weld it back on so it fits on the passenger side pointed forward. I've done this with a 1975 closed knuckle Ford 60 which has a steering arm real similiar to your axle and I did it twice with later kingpin 60's. I weld prep beveled and preheated the parts to 350 degrees and used 7018 or 8018 stick rod. I did full pen welds, needle scaled after passes while still very hot and and left the crown of the welds proud of the surface. I don't suggest everyone do this because it's not something that should even be attempted with 110 mig welder.
1970 F-250 4x4 original Willock swivel frame chassis '93 5.9 Cummins/Getrag/NP205/HP60/D70
User avatar
1971ford
100% FORDified!
100% FORDified!
Posts: 5565
Joined: Wed Jul 04, 2007 1:05 pm
Location: Placerville CA

Re: Death wobble - need to fix quick!

Post by 1971ford »

Well I am glad to say that I am death wobble free... even with the 37's and freeway speed. Success.

Image
Image
-Ryan
CrypticRacer13
Blue Oval Guru
Blue Oval Guru
Posts: 1177
Joined: Fri Jun 03, 2011 11:01 pm
Location: Burney Ca.

Re: Death wobble - need to fix quick!

Post by CrypticRacer13 »

Well played sir!
-Mike-
ECV 1849
Build>http://fordification.com/forum/viewtopi ... 22&t=68225
69' F250 Highboy 390ci.,NP435,Dana 24,HPD44,D60
67' Dodge Coronet R/T 440ci.4speed,D60, all numbers correct
72' Dodge Dart 440ci.727,D60,10ptcage street strip on meth 10.40s
05' Chevy Tahoe LT loaded for the wife an the baby duty
12' Ford Focus Titanium Hatch Back, Gas saver for the work week
User avatar
1971ford
100% FORDified!
100% FORDified!
Posts: 5565
Joined: Wed Jul 04, 2007 1:05 pm
Location: Placerville CA

Re: Death wobble - need to fix quick!

Post by 1971ford »

yep you called it from the start. track bar. lol
-Ryan
CrypticRacer13
Blue Oval Guru
Blue Oval Guru
Posts: 1177
Joined: Fri Jun 03, 2011 11:01 pm
Location: Burney Ca.

Re: Death wobble - need to fix quick!

Post by CrypticRacer13 »

Be sure to re check everything after a few hard miles in the dirt, for some reason on my old ram and my bros jeep they come loose quit often. Did you use nylon nuts? Or lock washers?
-Mike-
ECV 1849
Build>http://fordification.com/forum/viewtopi ... 22&t=68225
69' F250 Highboy 390ci.,NP435,Dana 24,HPD44,D60
67' Dodge Coronet R/T 440ci.4speed,D60, all numbers correct
72' Dodge Dart 440ci.727,D60,10ptcage street strip on meth 10.40s
05' Chevy Tahoe LT loaded for the wife an the baby duty
12' Ford Focus Titanium Hatch Back, Gas saver for the work week
User avatar
1971ford
100% FORDified!
100% FORDified!
Posts: 5565
Joined: Wed Jul 04, 2007 1:05 pm
Location: Placerville CA

Re: Death wobble - need to fix quick!

Post by 1971ford »

Nylocs
Yups I'll check everything often especially the pitman arm bolt until I double shear it
-Ryan
User avatar
71PA_Highboy
Blue Oval Fanatic
Blue Oval Fanatic
Posts: 923
Joined: Tue May 23, 2006 11:32 am
Location: Denver of the East

Re: Death wobble - need to fix quick!

Post by 71PA_Highboy »

I gotta say I am not as supportive as some on your solution.

I feel the tabs on the drag link are WAYYYYY too small to be safe. I understand it works, but there is a difference between working and being safe. I think you will rip them off as soon as you get in to some rough rocks and the PS starts to push and pull...

At least you put it in double shear...

Also, what are you doing to correct for the push-pull situation on the leafs? it appears the radius arm is going to push the bottom of the leafs out every time you hit a bump, and pull it in on every rebound. How often are you planning on replacing the leaf spring bushings?

Again, I know it solved the problem, but at what cost down the road?


Best of luck to you.
Got Ford?
2 EarlyBroncos (68,69)
2 Classic Mustangs (69,70)
1 F250 4x4 (71) - OB - 360, NP435, D24, HPD60 4.10, D60,
1 94 Ranger, 2.3, 5spd
1 Lincoln Mark VIII
User avatar
averagef250
100% FORDified!
100% FORDified!
Posts: 4387
Joined: Fri Mar 17, 2006 12:58 am
Location: Oregon, Beavercreek

Re: Death wobble - need to fix quick!

Post by averagef250 »

:yt:

Leaf spring panhard should be about level should it not?
1970 F-250 4x4 original Willock swivel frame chassis '93 5.9 Cummins/Getrag/NP205/HP60/D70
User avatar
Manny
Blue Oval Guru
Blue Oval Guru
Posts: 1190
Joined: Wed Oct 04, 2006 7:15 pm
Location: Georgia, Lake City
Contact:

Re: Death wobble - need to fix quick!

Post by Manny »

averagef250 wrote::yt:

Leaf spring panhard should be about level should it not?
Thinking parallel with the drag-link as shown. Or am i getting off on bronco coil spring tangent again versus leafs :?
Just another Ford fool named Dan.
The Junk that hangs around
67' F-250 highboy Camper special cross breed currently under way
http://www.fordification.com/forum/view ... 22&t=86706
1974 Bronco 302 3 speed
1984 bronco 302 c6 35's
1994 F350 7.3 5spd dually.
woods wrote: The rust holes in my truck were a factory install (very rare).
User avatar
1971ford
100% FORDified!
100% FORDified!
Posts: 5565
Joined: Wed Jul 04, 2007 1:05 pm
Location: Placerville CA

Re: Death wobble - need to fix quick!

Post by 1971ford »

yeah, but with the panhard (track bar) only being on the truck on the street, where the leaf springs barely move anyways, I don't see it wearing bushings out too quickly.
-Ryan
User avatar
Manny
Blue Oval Guru
Blue Oval Guru
Posts: 1190
Joined: Wed Oct 04, 2006 7:15 pm
Location: Georgia, Lake City
Contact:

Re: Death wobble - need to fix quick!

Post by Manny »

1971ford wrote:yeah, but with the panhard (track bar) only being on the truck on the street, where the leaf springs barely move anyways, I don't see it wearing bushings out too quickly.

Yeah hear that leaf springs are suppose to do the work themselves just a f-350 thing having the trac bar with leafs.
Just another Ford fool named Dan.
The Junk that hangs around
67' F-250 highboy Camper special cross breed currently under way
http://www.fordification.com/forum/view ... 22&t=86706
1974 Bronco 302 3 speed
1984 bronco 302 c6 35's
1994 F350 7.3 5spd dually.
woods wrote: The rust holes in my truck were a factory install (very rare).
Post Reply