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Technical Rear Leaf Springs

Discussion in 'Traditional Hot Rods' started by Mike Colemire, Nov 24, 2019.

  1. I know it's a dirty word, but get 2 front shocks for an early 60's vw bug, king pin beam. That's what I've put in the rear of about every model A I've built
     
    RICH B likes this.
  2. lostone
    Joined: Oct 13, 2013
    Posts: 2,883

    lostone
    Member
    from kansas

  3. Mike Colemire
    Joined: May 18, 2013
    Posts: 1,431

    Mike Colemire
    Member

    I use a VW steering stabilizer shock on the front, $25. Same shock as SoCal has, I make my own brackets.
     
  4. Mike Colemire
    Joined: May 18, 2013
    Posts: 1,431

    Mike Colemire
    Member

    Thanks for the shock link, they'll work good.
     
  5. AHotRod
    Joined: Jul 27, 2001
    Posts: 12,216

    AHotRod
    Member

  6. 1/2" with the sleeve inserted, 5/8" without
     
  7. AHotRod
    Joined: Jul 27, 2001
    Posts: 12,216

    AHotRod
    Member

    Thank you very much!
     
    Lloyd's paint & glass likes this.
  8. Mike Colemire
    Joined: May 18, 2013
    Posts: 1,431

    Mike Colemire
    Member

    That's a good price, they range from $38 to $75 on ebay.
     
  9. lostone
    Joined: Oct 13, 2013
    Posts: 2,883

    lostone
    Member
    from kansas

    I bought 4 to do all corners. I really like the feel of them, to me gas charged are too stiff for these lighter cars.
     
    AHotRod likes this.
  10. Mike Colemire
    Joined: May 18, 2013
    Posts: 1,431

    Mike Colemire
    Member

    lostone that is my thinking also. Maybe we should buy several, looks like they are getting rid of all the good stuff anymore.
     
  11. I've done better with Amazon lately than anywhere else. I got a simple wiring harness, good enough for me, for $24! You can't buy the wire for that. And an edelbrock carb kit for $13? Hell that's golden
     
  12. Mimilan
    Joined: Jun 13, 2019
    Posts: 1,230

    Mimilan
    Member

    That style of suspension was very common in European Rally Cars and Road Racing cars in the late 60's and Early 70's.
    English "Works" Ford Escort rally cars and Ford Cologne Capri road racing cars were 2 examples.

    It was mainly done with sliders instead of shackles.
    The reason was FIA rules where they had to maintain the original style of suspension [but location devices and override springs were allowed to be added.]

    If you study the photo below, there is no front spring eye! the spring floats between 2 rollers.
    This is on a Mk1 Escort
    WalterDavies-Ford-EscortRS1600-DB.jpg
     
  13. lostone
    Joined: Oct 13, 2013
    Posts: 2,883

    lostone
    Member
    from kansas

    ^^^^ around here we call it a full floating rear end setup.

    The most popular is either a mono leaf with no center bolt and spacers on the u clamps to allow about 1/16" clearance between spring and spring pad allowing the spring just to float.

    Multi spring leafs get a center bolt but the bolt holes on the spring pad and perches are slotted to allow the center bolt/spring again to slide and float.

    Old school technology, not sure when it came into being on race cars but i remember doing them back in the very early 80's myself. Used to be the hot setup before the popularity of coil overs.

    Some even had a single bolt setup that allowed changing car height. I'll get a pic of the last one i did and post a pic early next week.
     
  14. Mimilan
    Joined: Jun 13, 2019
    Posts: 1,230

    Mimilan
    Member

    I believe Chrysler had something called a "Leaf Link" in their Direct Connection Handbook. Where the rear end was floated at the spring pad.

    In FIA the rules stated the original "Style" of suspension must be retained.
    I've seen a Group 1 Capri that had homemade leaf springs made out of thin strips of sheet steel . They even stretched the rulebook by having "dogleg" or "W shaped" springs [looking from top down].

    That allowed them to run more Tyre in the wheelwell and still use the original mounting points and spring pad.
    It's known as innovation [sometimes called cheating]
     
    Boneyard51 likes this.
  15. Mike Colemire
    Joined: May 18, 2013
    Posts: 1,431

    Mike Colemire
    Member

    In the early 80's I had a SW floater on my mono leaf 68 Camaro drag car. Went high tens with a 427.
     
    loudbang likes this.
  16. Boneyard51
    Joined: Dec 10, 2017
    Posts: 6,451

    Boneyard51
    Member

    That reminded me of an event that happened a couple weeks ago to me! My friend and I took a road trip to deliver a racing engine to our builder and then went on over to a very well known winning racer in that area. While we were there I noticed something on his car that they were obviously working on.... but I didn’t understand “ what “ they were doing, so I asked him what are you doing here as I took a drink of coffee from my mug . He replied mater of factly, “ Cheating! “ I blew a mouth full of coffee out! .... I knew folks did it, just never admitted it to just any one! He is a nice guy and when on to explain the modification.










    Bones
     
    loudbang likes this.
  17. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 5,256

    sloppy jalopies
    Member

    On my first '30 coupe on '32 rails i used 5 rear leaves... don't just remove the top springs, their arch is a factor in the ride...
    .
    Was wondering how many fronts do you guys use...
    got a good straight front off a little trailer ... it has 12 leaves...
    memory says i used 8 fronts 30 years ago ?...
     
  18. This thread started about a year ago, and there were some suggestions for shock absorbers. Any thoughts on using the VW ones for rear of 34 Ford? Do you think weight difference is that much? Parallel leafs used for suspension.
     
  19. Kirky
    Joined: Jun 18, 2020
    Posts: 11

    Kirky
    Member

    Like the VW shock idea.
     
  20. 6sally6
    Joined: Feb 16, 2014
    Posts: 2,467

    6sally6
    Member

    I seeeeeeeeeee!!!! ;)
    The floater rear end with the two "locator bars"/traction bars going forward with two heim joints to enable the axle housing to twist but NOT bind.
    IF.......the rear bars was welded solid to the axle the rotation of the axle(without bind!) to in effect lift the front of the car.....upon launch.
    IF the rear bars was dropped down about 6" with a heavy duty bracket and welded solid AND solid to the axle housing these bars (like Crites bars) would put a tremendous amount of lift toward the front mounting point possibly lifting the front end, while the same down force would plant the rear tires. That's why.........with this set up the rear section of the car actually lifts on full acceleration!
    The shock mounts with the 'wallered-out' holes on top allow the shock to pivot when the rear axle twists & plants the tires
    Cool.
    6sally6
     

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