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Projects Chromed front axels

Discussion in 'Traditional Hot Rods' started by Harold's Speed, Jul 17, 2021.

  1. Harold's Speed
    Joined: Jan 6, 2016
    Posts: 49

    Harold's Speed
    Member

    Anyone purchased a chromed forged front axel from So-cal or Speedway. I was wondering how good the chrome looked. Not worried about top notch show car chrome finish but looking for solid coverage and presentable look. Thanks
     
  2. Mr48chev
    Joined: Dec 28, 2007
    Posts: 30,191

    Mr48chev
    Member

    Mine isn't chrome and was actually one that one of their shops drug around to shows for a while that I got a been drug to shows and it shows it discount on a few years ago.
    They are seriously beefy though.
    [​IMG]

    I'd have to say that it was the box that really looked shop worn. It does show it's miles.
    [​IMG]
     
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  3. tomcat11
    Joined: Mar 31, 2010
    Posts: 189

    tomcat11
    Member
    from Kalifornia

    I have a drilled and chromed So-Cal. The chrome is very nice. There are machining lines in the holes and the chrome seems a bit thin inside the holes. Extra polishing and a special plating set up would be required to get in those areas. Not cost effective but still a very nice piece.
     
  4. I have one and as Tomcat11 said this was the only negative which I did not mind, I had to lightly dress the kingpin lock bolt holes to remove some flashing inside them which is probably normal....very happy with the quality and chroming :D
     

  5. krylon32
    Joined: Jan 29, 2006
    Posts: 7,585

    krylon32
    Alliance Vendor
    from Nebraska

    Buy your forged chrome axle from Roadster Supply in CA. I gotten several from them and the quality has been excellent. Same axle as So-Cal sells.
     
  6. Bought one of their non chromed axles a couple years ago. The king pin bores were so tight that the pins wouldnt begin to go in. Had them reamed to size.Didnt take much,but it had to be done.I wonder if they plug the holes when they chrome plate them.Might be a question to ask them.
     
  7. chop&drop
    Joined: Oct 11, 2006
    Posts: 495

    chop&drop
    Member

    I’ve got a chrome So-Cal an the chrome looks great. Nice looking axle.
     
    loudbang likes this.
  8. Harold's Speed
    Joined: Jan 6, 2016
    Posts: 49

    Harold's Speed
    Member

    Thanks for everyone for the responses!
    Thanks Krylon 32 for the tip on Roadster supply
     
  9. anthony myrick
    Joined: Sep 4, 2009
    Posts: 8,962

    anthony myrick
    Member

    Forged




    Forged
     
    pitman likes this.
  10. krylon32
    Joined: Jan 29, 2006
    Posts: 7,585

    krylon32
    Alliance Vendor
    from Nebraska

    When you purchase one tell them to check the kingpin bore for fit.
     
  11. Harold's Speed
    Joined: Jan 6, 2016
    Posts: 49

    Harold's Speed
    Member

    Thanks, I will
     
  12. Bandit Billy
    Joined: Sep 16, 2014
    Posts: 8,161

    Bandit Billy
    ALLIANCE MEMBER

    Mine is SoCal and the finish is very nice. Here is a close up.
    (this is the special Alliance Edition, not sure if it is currently offered)
    upload_2021-7-22_10-51-49.png
     
    Hotrodmyk, chevy57dude and VANDENPLAS like this.
  13. xix32
    Joined: Jun 12, 2008
    Posts: 535

    xix32
    Member

    Hydrogen embrittlement ?
     
    GuyW likes this.
  14. prpmmp
    Joined: Dec 12, 2011
    Posts: 1,080

    prpmmp
    ALLIANCE MEMBER

    How did you get the axle to float in the bed of your pickup??:eek: Pete
    [​IMG]
     
  15. Photoshop!:eek:

    Actually it appears to be supported in the center.:cool:
     
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  16. Atwater Mike
    Joined: May 31, 2002
    Posts: 10,728

    Atwater Mike
    ALLIANCE MEMBER

    Only on cast axles, has not been reported on forged. Good question, though...the thing to do WAS (in the '70s) heat the chromed axle after chroming, anyone know the heat Fahrenheidt recommended? 500*?
     
  17. pitman
    Joined: May 14, 2006
    Posts: 5,151

    pitman

    Forgotten, but needs to set at a certain temp, then s-l-o-w-l-y cool down, as far as I know, any steel when plated is subjest to this.
     
    GuyW likes this.
  18. 36cab
    Joined: Dec 2, 2008
    Posts: 760

    36cab
    ALLIANCE MEMBER

    Hydrogen embrittlement is usually only a problem on parts with a hardness of Rockwell C 30 or more BUT any chrome plated parts can have hydrogen embrittlement. The parts below Rockwell C 30 are just not as susceptible to stress cracking as those above Rockwell C 30. A good rule of thumb is to bake the parts at between 375F and 425F within 1-2 hours after the plating process. The higher the Rockwell hardness the longer they should be baked.
    ASTM B850-98 (REAPPROVED 2009)
    Partial list of hydrogen embrittlement-relief treatment bake times/temperatures for some common high-strength steels


    Rockwell Hardness HRc
    49 – 51 Minimum 22 hours
    47 – 49 Minimum 20 hours
    45 – 47 Minimum 18 hours
    43 – 45 Minimum 16 hours
    39 – 43 Minimum 14 hours
    36 – 39 Minimum 12 hours
    33 – 36 Minimum 10 hours
    31 – 33 Minimum 8 hours
     
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  19. Only applies to high carbon heat treated steel. Reference - grade 5 bolts no problem, grade 8 bolts are at the edge of embrittlement problems and require heat treatment. Axles, spindles, frames, and most other steel parts are in no danger. Chrome away.
     
  20. 31 Coupe
    Joined: Feb 25, 2008
    Posts: 298

    31 Coupe
    Member

    From what I understand it's the Carbon content that effects HE ...... anything higher than 0.3% Carbon.
    1020 mild steel is not usually effected, the steel numbering system indicated the steel type and carbon content ...... 1020 (MS) is 10 = plain carbon steel, 20 = 0.2% Carbon. 1040 means the same steel but with 0.4% C. 4130 means it's a Chrome/Molybdenum steel type with 0.3% Carbon. Most automotive springs are made with ~1055 steel and definitely suffer from HE.
    A friend built his T in the 70's with a chromed Jaguar IRS and he took that straight from the platers to the heat treaters. And it's not just Chrome but any electroplated finish, my brother Zinc plated a pair of high tensile socket head cap screws years ago for this towbar and not long after a very cold night he found the bar on the ground with two snapped off screw heads. He was very lucky because he'd just returned from a trip with the trailer.
     
  21. Old HAMB Metallurgist here. HE is almost entirely a hardness related problem. as stated Rockwell C of 30 or higher. Means heat treated type parts. Carbon content is minor function, it does make it higher hardness.
    Typically HE is mitigated by the after plating bake. Into oven within 1 hour, 400F for 4 hours is kind of general rule.
    BTW, acid processing like a derusting process in an acid solution can also cause HE. It's not just plating.
     
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  22. Reidy
    Joined: May 13, 2016
    Posts: 184

    Reidy
    Member

    I am guessing it is not a traditional forged axle but one of those new fangled axles made out of super lite space age material to keep unsprung weight down ;), or an optical illusion.

    Steve
     
    prpmmp likes this.

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