The Ford Barn

jerrytocci · 09-04-2021, 09:10 PM

Front end shimmies at slow speed braking . Drives fine .

700rpm · 09-04-2021, 09:15 PM

Must be a Model A.

Synchro909 · 09-05-2021, 01:01 AM

Do a search. That matter has been discussed to death. All you could wish to know will be in a previous thread.

nkaminar · 09-05-2021, 07:02 AM

Warranty issue. Bring it back to the Ford dealer.

ModelAMike1930 · 09-05-2021, 07:39 AM

Check the wheel bearings and or the tie rod ends.

KenBolton · 09-05-2021, 11:50 AM

Sponsored Links (Register now to hide all advertisements)

After addressing everything else I replaced the wishbone rubber ball clamp with a repro original. Did the trick.

jerrytocci · 09-05-2021, 06:56 PM

Thanks Ken

goodcar · 09-05-2021, 07:19 PM

Quote:

Originally Posted by jerrytocci

Front end shimmies at slow speed braking . Drives fine .

The dreaded death wobble. Check everything steering related, tie rod and drag link inserts, steering arm and pitman balls. If egg shaped, replace. Check spindles and wheel bearings for wear. Radius ball needs to be tight. Check for proper toe in.

nkaminar · 09-05-2021, 07:40 PM

Shimmy Shimmy Ko Ko Bop

https://www.youtube.com/watch?v=5mLjZRAXRRA

Warning: If you listened to 45's in the 50's this will give you an ear worm.

Cape Codder · 09-05-2021, 08:14 PM

I have just done all that "goodcar" suggested PLUS had the end of the axles rebushed. BOTH sides were elongated! In my opinion with what I had the King Pins can move even with the locking horizontal pin installed.

nkaminar · 09-06-2021, 08:25 AM

There is a trick to installing the locking pins. They have to be hammered in and then the nut installed. If someone did not install them correctly then the king pins can move around a bit.

Synchro909 · 09-06-2021, 10:25 PM

Quote:

Originally Posted by nkaminar

There is a trick to installing the locking pins. They have to be hammered in and then the nut installed. If someone did not install them correctly then the king pins can move around a bit.

I NEVER hammer those cotter pins in now. I did once and ruined the axle by elongating the king pin eye.

Rob Doe · 09-07-2021, 01:59 PM

Quote:

Originally Posted by jerrytocci

Front end shimmies at slow speed braking . Drives fine .

I read somewhere recently that proper setting of the toe-in can sometimes resolve shimmy, even if other parts are worn. Not sure about the braking type shimmy, but would be worth a try if the toe-in is incorrect.

Sounds like your brakes could need adjusting. I use a cheap infrared temperature gauge to read the temps of the drums after a few stops.

Tom Wesenberg · 09-07-2021, 10:16 PM

Yep, my temporary front axle assembly on my 28 had very loose king pin bushings, but the correct toe in, and it never had a hint of shimmy.

Patrick L. · 09-08-2021, 08:31 AM

It can be anything from the steering box adjustment all the way thru to the wheel bearings and anything in between. Thats quite a bit of stuff to look at and fix. Loose king pin bushings are not the problem unless maybe if they are really loose. When everything is checked and fixed if needed then set the toe-in to 1/32-1/16".

Jim Brierley · 09-08-2021, 10:41 AM

I've found it is often looseness in the drag link ends, but all the above should be checked.

09-04-2021, 09:10 PM	#1
jerrytocci Senior Member Join Date: Aug 2020 Posts: 235	Front end shimmy Front end shimmies at slow speed braking . Drives fine .

09-04-2021, 09:15 PM	#2
700rpm Senior Member Join Date: May 2010 Location: Portland, Oregon Posts: 5,902	Re: Front end shimmy Must be a Model A. __________________ Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole.

09-05-2021, 01:01 AM	#3
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,488	Re: Front end shimmy Do a search. That matter has been discussed to death. All you could wish to know will be in a previous thread. __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.

09-05-2021, 07:02 AM	#4
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,889	Re: Front end shimmy Warranty issue. Bring it back to the Ford dealer. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.

09-05-2021, 07:39 AM	#5
ModelAMike1930 Senior Member Join Date: Oct 2013 Location: Illinois Posts: 382	Re: Front end shimmy Check the wheel bearings and or the tie rod ends.

09-05-2021, 11:50 AM	#6
KenBolton Senior Member Join Date: Jun 2020 Location: Fall Creek, WI Posts: 213	Re: Front end shimmy Sponsored Links (Register now to hide all advertisements) After addressing everything else I replaced the wishbone rubber ball clamp with a repro original. Did the trick.

09-05-2021, 06:56 PM	#7
jerrytocci Senior Member Join Date: Aug 2020 Posts: 235	Re: Front end shimmy Thanks Ken

09-05-2021, 07:40 PM	#9
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,889	Re: Front end shimmy Shimmy Shimmy Ko Ko Bop https://www.youtube.com/watch?v=5mLjZRAXRRA Warning: If you listened to 45's in the 50's this will give you an ear worm. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past. Last edited by nkaminar; 09-06-2021 at 08:23 AM.

09-05-2021, 08:14 PM	#10
Cape Codder Senior Member Join Date: May 2010 Posts: 1,261	Re: Front end shimmy I have just done all that "goodcar" suggested PLUS had the end of the axles rebushed. BOTH sides were elongated! In my opinion with what I had the King Pins can move even with the locking horizontal pin installed.

09-06-2021, 08:25 AM	#11
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,889	Re: Front end shimmy There is a trick to installing the locking pins. They have to be hammered in and then the nut installed. If someone did not install them correctly then the king pins can move around a bit. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.

09-07-2021, 10:16 PM	#14
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Front end shimmy Yep, my temporary front axle assembly on my 28 had very loose king pin bushings, but the correct toe in, and it never had a hint of shimmy.

09-08-2021, 08:31 AM	#15
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Front end shimmy It can be anything from the steering box adjustment all the way thru to the wheel bearings and anything in between. Thats quite a bit of stuff to look at and fix. Loose king pin bushings are not the problem unless maybe if they are really loose. When everything is checked and fixed if needed then set the toe-in to 1/32-1/16".

09-08-2021, 10:41 AM	#16
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,081	Re: Front end shimmy I've found it is often looseness in the drag link ends, but all the above should be checked.

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