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Hot Rods Assembling a Model A Spring

Discussion in 'The Hokey Ass Message Board' started by krylon32, Aug 13, 2024.

  1. krylon32
    Joined: Jan 29, 2006
    Posts: 10,868

    krylon32
    ALLIANCE MEMBER
    from Nebraska

    I'm down to the last inch of compression ***embling this Posie A spring on the Quick Change rear. I've just can't seem to get it together. I have Vise Grip C clamps to the point of where i can't get them closed anymore, I have a couple of 8 inch heavy duty C clamps also working. The nut on the center bolt is getting very difficult to turn. I've done several of these but this ones kicking my ****. Maybe take a break over night. Maybe I'm getting old?
     
    05snopro440 and seb fontana like this.
  2. lostone
    Joined: Oct 13, 2013
    Posts: 3,570

    lostone
    Member
    from kansas

    Do you have the ends of the main spring mounted already? And trying to force the rest of the spring pack together ?

    ...
     
  3. Dave G in Gansevoort
    Joined: Mar 28, 2019
    Posts: 3,719

    Dave G in Gansevoort
    Member
    from Upstate NY

    Have you thought about making a set of spring clamps? 4 pieces of 1/2×1 crs bar stock wide enough to go from side to side of the spring. Drill bolt holes wide enough to clear the spring and use 4 grade 8 fine thread bolts and nuts, 1/2-20, and never seize. Put them on either side of the center bolt, and pull it together with the 4 bolts.

    No pictures or drawing, but I think you'll understand the idea
     
  4. krylon32
    Joined: Jan 29, 2006
    Posts: 10,868

    krylon32
    ALLIANCE MEMBER
    from Nebraska

    Main leaf is on the spring hangers on the quick change hosing ends, Reversed eye main. I had the leaves captured with a pair of homemade clamps so they couldn't slip sideways. Just not enough muscle. Got tired of screwing with it, took a short run up to the local semi repair shop and borrowed a pair of some really big C clamps. They made short work of the last inch of compression needed. Now it's resting over night, tomorrow I'll pull out the ready rod and put the spring bolt back in. This is probably the last one I'll ever do?
     
    warbird1, catdad49, pprather and 2 others like this.
  5. seb fontana
    Joined: Sep 1, 2005
    Posts: 9,187

    seb fontana
    Member
    from ct

    ready rod? Threaded rod or all thread? Course thread. That stuff isn't rated for much but we did have it at work in 4130 or grd8 $$$. Be damned if I can remember what/where it was used. Just write on the garage wall how you did it for "next" time.;)
     
  6. lostone
    Joined: Oct 13, 2013
    Posts: 3,570

    lostone
    Member
    from kansas

    I was going to say in your situation I use 4 big clamps, slowly working all 4 at the same time.

    And if room permits, I run 1 clamp up and the one next to it down and the same on the other side of the spring center bolt. This way I don't have to fight the handles being right beside each other !

    Anyway glad you got her all figured out !!

    ..
     
  7. Corn Fed
    Joined: May 16, 2002
    Posts: 3,423

    Corn Fed
    Member

    I purchased from a Model A resto parts vendor a center bolt with the correct square head but with a really long thread on it. Between c-clamps and the long bolt (with oiled threads) I have never had a problem. After tighten it up you just cut the extra threads off.
     
    '29 Gizmo likes this.
  8. krylon32
    Joined: Jan 29, 2006
    Posts: 10,868

    krylon32
    ALLIANCE MEMBER
    from Nebraska

    Yea I was using oiled ready rod and c clamp Vise Grips until I couldn't tighten it any more. Trust me I've done quite a few of these ***embling my own and customers ch***is. This particular spring just was a little tougher than the others?
     
  9. '29 Gizmo
    Joined: Nov 6, 2022
    Posts: 1,174

    '29 Gizmo
    Member
    from UK

    Did mine on the car. Long center bolt and clamps to pull it into the crossmember. Just kept tightening the center nut, then the clamps and it pulled together. Cut the excess off the bolt when I had done. I made a bolt by grinding the hex head to a square to fit the crossmember
     

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