AuthorTopic: front end question  (Read 5309 times)

0 Members and 1 Guest are viewing this topic.

Offline just old

  • Global Moderator
  • Rat Rods or Nothing
  • *****
  • Posts: 785
  • Activity:
    1%
  • Referrals: 0
front end question
« on: July 11, 2015, 05:32:14 PM »
be twice around the block now working out bugs . I seem to have a wobble in the front at about 25 t0 30 that is a guess no speedometer . what is the easiest why to fix it .

99.9% done

Online lowboy

  • Global Moderator
  • Rat Rods or Nothing
  • *****
  • Posts: 4998
  • Vehicle: 1973 Volkswagen Beetle
  • Activity:
    0%
  • BOOG OUT
  • Referrals: 3
Re: front end question
« Reply #1 on: July 11, 2015, 07:37:22 PM »
good tires and rims? or is it more of a bump steer thing?
life is a ride where you slide into heaven sideways on 4 flats blown motor saying Thank you God what a ride!!!!!

Offline just old

  • Global Moderator
  • Rat Rods or Nothing
  • *****
  • Posts: 785
  • Activity:
    1%
  • Referrals: 0
Re: front end question
« Reply #2 on: July 11, 2015, 08:25:21 PM »
I think bump steer new tires and wheels

Online lowboy

  • Global Moderator
  • Rat Rods or Nothing
  • *****
  • Posts: 4998
  • Vehicle: 1973 Volkswagen Beetle
  • Activity:
    0%
  • BOOG OUT
  • Referrals: 3
Re: front end question
« Reply #3 on: July 11, 2015, 08:41:16 PM »
is your steering arm parrell to the ground? loose steering box/components?Wheel bearings tight? rear end moving around?
life is a ride where you slide into heaven sideways on 4 flats blown motor saying Thank you God what a ride!!!!!

Offline hotwheels

  • Rat Rod Builder
  • Administrator
  • Rat Rods or Nothing
  • *****
  • Posts: 9054
  • Vehicle: 1947 Ford Pickup
  • Activity:
    0%
  • Referrals: 9
    • Rat Rod Nation
Re: front end question
« Reply #4 on: July 12, 2015, 04:31:10 AM »
I believe you will need to check your king pins. Place an angle finder on the top of the king pin and see if it is -3 to -5 degrees. The angle needs to be tipped back towards your cab, if that makes sense......Sounds like you have the death wobble.....
Love building rat rods, driving mustangs, and building websites.

Offline just old

  • Global Moderator
  • Rat Rods or Nothing
  • *****
  • Posts: 785
  • Activity:
    1%
  • Referrals: 0
Re: front end question
« Reply #5 on: July 12, 2015, 04:40:09 AM »
I know what you mean and I will check on that . I hope it is just droping the arms down I used the org. front from the 34 with the speedway disc brake system which I bought at a flea market .

Offline just old

  • Global Moderator
  • Rat Rods or Nothing
  • *****
  • Posts: 785
  • Activity:
    1%
  • Referrals: 0
Re: front end question
« Reply #6 on: July 12, 2015, 07:17:51 AM »
I check the angle and it is around 8 to 9 degrees . any other ideas anybody

Offline obama

  • Global Moderator
  • Rat Rods or Nothing
  • *****
  • Posts: 2991
  • Activity:
    0%
  • Referrals: 1
Re: front end question
« Reply #7 on: July 12, 2015, 09:41:20 PM »
Jack up one side of the front and grab the tire and wiggle it, if you have a loose part it can help you find it, if nothing try the other side.  Check for brake hang up and a true spin while you've got them in the air.  Just my thoughts, I ain't always right.

Offline Rubberhead

  • Serious Rat Rodder
  • ****
  • Posts: 456
  • Activity:
    0%
  • Referrals: 0
Re: front end question
« Reply #8 on: July 13, 2015, 04:58:26 AM »
A friend of mine had that happen when he installed needle bearing king pins. After trying all kinds of things, he wound up installing a steering damper.

Offline hotwheels

  • Rat Rod Builder
  • Administrator
  • Rat Rods or Nothing
  • *****
  • Posts: 9054
  • Vehicle: 1947 Ford Pickup
  • Activity:
    0%
  • Referrals: 9
    • Rat Rod Nation
Re: front end question
« Reply #9 on: July 13, 2015, 08:44:05 AM »
8 to 9 degrees may be to much, try changing it to 3 to 5 degrees, 7 being the most i woud try. Then check your toe in on the front wheels. Take a tape measure and measure the front of the tire. Write this number down. Then from the rear of the front tires measure again center to center from tire to tire. Now subtract the front measurment from the rear measurement and that is your "toe-in". If the rear is less than the front measurement then you have a "toe-out". Loosen the tie-rod ends and adjust a little from both sides. You want to end up with 1/16 of an inch toe-in. Lastly, if this doesn't work, pull the front tires off and take them to a tire shop and have them balanced.
Love building rat rods, driving mustangs, and building websites.

miraclepieco

  • Guest
Re: front end question
« Reply #10 on: July 14, 2015, 01:25:43 AM »
I could spout a ton of theory about suspension geometry etc, but in my experience EVERY front end wobble, shake or vibration issue I have ever had has been cured with new tires and wheels.


Offline hotwheels

  • Rat Rod Builder
  • Administrator
  • Rat Rods or Nothing
  • *****
  • Posts: 9054
  • Vehicle: 1947 Ford Pickup
  • Activity:
    0%
  • Referrals: 9
    • Rat Rod Nation
Re: front end question
« Reply #11 on: July 14, 2015, 07:28:05 AM »
I agree....I would like to think when a person takes in tires and rims to be balanced, the person balancing the set up would tell the owner that the rims are so out of alignment that they need replaced, but most don't say anything.
Love building rat rods, driving mustangs, and building websites.

Offline just old

  • Global Moderator
  • Rat Rods or Nothing
  • *****
  • Posts: 785
  • Activity:
    1%
  • Referrals: 0
Re: front end question
« Reply #12 on: July 14, 2015, 08:48:19 AM »
I do agree with what you are saying , but the tires and wheels are brand new sense day one . now I did check the toe in and fine I am toe in 3/4 of and in so I will fix that today . will take wheels to be balanced

Offline hotwheels

  • Rat Rod Builder
  • Administrator
  • Rat Rods or Nothing
  • *****
  • Posts: 9054
  • Vehicle: 1947 Ford Pickup
  • Activity:
    0%
  • Referrals: 9
    • Rat Rod Nation
Re: front end question
« Reply #13 on: July 15, 2015, 08:02:02 AM »
One of those should fix the death wobble. 5 to 7 degrees on the top of the king pins (tipped back towards the cab), 1/16" toe in...and wheel balance.
Love building rat rods, driving mustangs, and building websites.

Offline Blackwater

  • Global Moderator
  • Rat Rods or Nothing
  • *****
  • Posts: 1477
  • Activity:
    2.8%
  • Referrals: 1
    • Milkbone Blues Band
Re: front end question
« Reply #14 on: September 12, 2015, 08:25:39 PM »
Check the pitman arm and drag link tierod ends for slack. Does the wobble go away in a turn?  Are the arms on the spindles parallel with each other?

Any of these conditions can cause a wobble.

If you're using a rack and pinion steering you need to have the rack mounted so that the rods are level at rest and when in cruise mode. If the rack is too high or too low and the rod ends aren't level with it, you'll get bump steer or in some cases a wobble.
Never use a minor caliber bullet on a major caliber adversary!!

miraclepieco

  • Guest
Re: front end question
« Reply #15 on: September 13, 2015, 12:33:13 AM »
It is unorthodox, but lots of guys have cured front end wobble by changing to 1/16"-1/8" toe OUT.

Tags:
 

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40