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Technical Reverse eye model a front spring

Discussion in 'Traditional Hot Rods' started by ezloader, Feb 27, 2020.

  1. ezloader
    Joined: Feb 27, 2020
    Posts: 2

    ezloader

    Wanting to lower the front end a little,like to try 7 leaf reverse eye.
    New stock spring is 30 1/2” eye to eye center,I see 30” and 31” not sure which one I should try,any info appreciated. Thanks.
     
  2. Dirty Dug
    Joined: Jan 11, 2003
    Posts: 3,722

    Dirty Dug
    Member

    I'd go with the 30".
     
    dana barlow and lake_harley like this.
  3. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 5,256

    sloppy jalopies
    Member

    There are also de-arched springs that lower the frontend about 2"...
    you may need to cut and weld in some spring travel clearance into the frame rails beside/under the front crossmember... go eazy go !
     
    anothercarguy likes this.
  4. manyolcars
    Joined: Mar 30, 2001
    Posts: 9,609

    manyolcars

    I used my press to reverse the main leaf on my front spring on my avatar. Also has a dropped axle. It was so low that the tires hit the underside of my fenders
     
    dana barlow likes this.
  5. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 5,256

    sloppy jalopies
    Member

    very cool... thanks manyolcars...
    I want to use a reversed eye/ de-arched spring, model A crossmember, and an un-dropped stock axle...
    sounds like that should work...
     
    John Heckman likes this.
  6. You may still have to notch the frame rails at the cross member for a de-arched spring.With the stock axle the fenders should be fine.
     
  7. HOTRODPRIMER
    Joined: Jan 3, 2003
    Posts: 64,925

    HOTRODPRIMER
    ALLIANCE MEMBER

    You can also use a mono reverse eye spring to get the car lower. HRP
     
  8. lake_harley
    Joined: Jun 4, 2017
    Posts: 2,456

    lake_harley
    Member

    I agree with Dirty Dug's suggestion to go with the shorter spring. I reversed the main leaf on my A myself, returning it to the same arch, but with downward curve of the main leaf the eye-to-eye length gets slightly longer since it's on the top and "out", rather than curled under. That puts the shackles more "hanging down" rather than the 45 degree angle that's accepted as a good point to be to give room for suspension travel. If this doesn't make sense at first, think about it and maybe do a simple drawing.

    Lynn
     
    Fordors likes this.
  9. wheeldog57
    Joined: Dec 6, 2013
    Posts: 3,864

    wheeldog57
    ALLIANCE MEMBER

    I reversed a stock model A main leaf with a vise , put all the leaves back on and installed it. When I got it off the stands and back on the ground it looked great. I stood on the frame rails and jumped up and down it just flattened out and stayed there. I ordered a new reverse eye spring from Americas oldest speed shop, swapped it in and am very happy with the results 2230.jpeg
     
    John Heckman and barrnone50 like this.
  10. clem
    Joined: Dec 20, 2006
    Posts: 4,703

    clem
    Member

    As others have said, - 30”
    or just buy the main leaf....
     
  11. Kiwi 4d
    Joined: Sep 16, 2006
    Posts: 3,913

    Kiwi 4d
    ALLIANCE MEMBER

    Buy a new one as Clem said. We have re arched an original model A spring at home with a hydraulic pipe bender . looked great and wasn’t hard to do . but over time the jolly thing sags back to where we dont want it. Don’t know why.
     
  12. clem
    Joined: Dec 20, 2006
    Posts: 4,703

    clem
    Member

    I always understood that the only correct way to reverse a spring was to heat and ‘un-roll’ the eyes and then roll them the way you wanted.
    I learned that almost 40 years ago and only the last few years have I heard of using a press, which doesn’t take into account the tempering of the steel in the spring.
    (I also know that I will most likely be rubbished for the above comments).
     
    town sedan likes this.
  13. town sedan
    Joined: Aug 18, 2011
    Posts: 1,288

    town sedan
    Member

    Just my opinion based on talking to a couple of spring shops here in Kansas City.
    First off not all spring shops keep their furnace fired up anymore. Not everyone has access to a local spring shop and don't we all like to do things ourselves?
    I think this is where using a press to reverse a spring "at home" comes from.
    Problem is we are working with a spring that is possibly 90+ years old and cycled millions of times.
    Now let's have a good old flaming like was common here 15 years ago when I found Ryan's place.
    -Dave
     
    Texas Webb, flatheadpete and clem like this.
  14. alchemy
    Joined: Sep 27, 2002
    Posts: 22,782

    alchemy
    Member

    Shouldn't we Northerners just trade main leafs with you guys on the Southern Hemisphere? Then nobody needs to do any labor. The spring is already upside down.
     
  15. clem
    Joined: Dec 20, 2006
    Posts: 4,703

    clem
    Member

    Ha, not just the spring, our lives are upside down as well..........
     
    town sedan likes this.
  16. Desmodromic
    Joined: Sep 25, 2010
    Posts: 570

    Desmodromic
    Member

    On a spring-above-sxle arrangement there is a measurable clearance between the top of the axle and the spring-to-frame attachment hardware, which must be greater than the "design" value of "bump". This clearance becomes decreased by reversing spring eyes (maybe 1.5"), dearching springs, and/or omitting leaves. I don't know if this is applicable in your case, but bear it in mind. (Dropped axles have no such impact on this clearance.)
     
    Last edited: Mar 1, 2020
  17. ezloader
    Joined: Feb 27, 2020
    Posts: 2

    ezloader

    Appreciate all your inputs,have a 30” spring on order,I’m back in the country in a couple of months and give her a go then. Thanks agin.
     
  18. RICH B
    Joined: Feb 7, 2007
    Posts: 6,020

    RICH B
    ALLIANCE MEMBER

    31-1/2" spring is made for original Ford axles with 36-1/2" perch width; while the 30" spring is made a 35" perch width aftermarket axles. Seems to me that even the 31" spring made for Super Bell and their ilk axles doesn't sit quite right on a stock perch width axle.
     
  19. Tim
    Joined: Mar 2, 2001
    Posts: 20,484

    Tim
    Member
    from KCMO

    Posies makes springs 31.5 most places just don’t list it. Got mine via pete and Jakes
     
    John Heckman likes this.
  20. RICH B
    Joined: Feb 7, 2007
    Posts: 6,020

    RICH B
    ALLIANCE MEMBER

    Yep, 1001 with 5-1/2" unloaded arch or 1001L with 4-1/2" unloaded arch. Usually need to notch the rails with the 1001L.

    Sent from my Nexus 5X using The H.A.M.B. mobile app
     
  21. Tim
    Joined: Mar 2, 2001
    Posts: 20,484

    Tim
    Member
    from KCMO

    Yeah with my light drivetrain I might be able to get away with no notch but seeing as much as my posies spring settled over the first couple of years I’m going to go ahead and notch it.

    Truthfully surprised at how many cars are bottoming the spring out on the frame rails after even a small amount of travel. They’ve got to ride like dog ****. I checked probably 30 cars this last year to see what they had for clearance to help make my mind up on the notch. I know a traverses leaf ford doesn’t have a lot of travel but some would be preferred over none lol
     
    town sedan likes this.
  22. town sedan
    Joined: Aug 18, 2011
    Posts: 1,288

    town sedan
    Member

    So, in general how much clearance do you need between the top side of the front spring and the bottom side of the frame?
    -Dave
     
    RICH B likes this.
  23. Tim
    Joined: Mar 2, 2001
    Posts: 20,484

    Tim
    Member
    from KCMO

    Well, they move about 1.25 vertically at the shackles so I’m probably going to aim for an inch of clearance from the top of the spring to the top of the notch/ bottom of the frame.

    seems to me most of the front notches I see are about 3/4 inch deep
     
    town sedan likes this.
  24. town sedan
    Joined: Aug 18, 2011
    Posts: 1,288

    town sedan
    Member

    Thanks for the reply Tim. My roadster project is still missing some weight from the front end (hood, radiator, grill shell and smaller parts). With that in mind, I measured about 2 & 1/2" from the lower outside corner of the frame rail straight down to the top of the spring leaf bellow. This is the first early Ford I've had and wasn't sure if that wasn't too close, or not.
    -Dave
     
  25. Tim
    Joined: Mar 2, 2001
    Posts: 20,484

    Tim
    Member
    from KCMO

    Seems like plenty,
     
  26. town sedan
    Joined: Aug 18, 2011
    Posts: 1,288

    town sedan
    Member

    Still all stock. Need to pull, clean and lube both front 'n rear springs. Not going super low, will probably remove a leaf or three out of each to make it a little lower, but I like the way it sits now and don't want a real big forward rake. Thanks for the input.
    -Dave
     
  27. -Brent-
    Joined: Nov 20, 2006
    Posts: 7,867

    -Brent-
    Member

    I've used both just fine. There's a spring shop who reversed the eyes of a Model A front and rear main leaf for me. I never had an issue. If I remember correctly, I had to trim the second leaf of both of the spring packs.

    I have used the press method a few times. That worked out well, too.
     
    1950mercsled likes this.
  28. Colonial Coupe
    Joined: Dec 22, 2010
    Posts: 74

    Colonial Coupe
    Member

    Reversed eye on my avatar. Think it's 7 leaf had to put a spacer under it to get it to clamp up. Rides better than stock.
     
    John Heckman likes this.

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