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Zinc Plating (2011)

Discussion in 'Norton Commando Motorcycles (Classic)' started by chasesa, Feb 25, 2011.

  1. chasesa

    chasesa

    Joined:
    Dec 26, 2007
    I have just zinc plated lots of parts with teh Eastwood zinc plating kit. $69.00 & free shipping.

    Very simple & actually fun to do. You'll be looking for things to plate (seriously!!).

    Check the video: www.youtube.com/watch?v=n0oUeQd1bus

    Have fun!
    Stephen
     
  2. DogT

    DogT VIP MEMBER

    Joined:
    Jan 20, 2009
    Cool, I wonder if it would stand up to a buffer instead of hand polishing? Do they say how many sq. in. it plates for $70.

    Dave
    69S
     
  3. 1up3down

    1up3down

    Joined:
    Jan 12, 2011
    Cool!

    But what parts on our Commandos would be good candidates for this?
     
  4. lcrken

    lcrken VIP MEMBER

    Joined:
    Mar 15, 2009
    Pretty much all the nuts and bolts, as well as any other parts that were cad plated when new. I've used the Eastwood tin-zinc kit to plate a lot of nuts and bolts, as well as some other odds and ends, and the final result looks very much like bright cad. I don't think it is as good as cad for long term corrosion resistance, but it's pretty good, and the price is right. I've also used their copper plating kit, and it's just as simple to use.

    Ken
     
  5. FASTLIKEJUDY

    FASTLIKEJUDY

    Joined:
    Apr 9, 2010
    I used the Eastwood system a couple of years ago. No big problems but the system is really not sized to plate the hardware for an entire motorcycle restoration. Last year I purchased a CopyCad system from CASWELL

    http://www.caswellplating.com/

    Not only are their chemicals and anodes of high quality, they oversee a plating forum where there are many plating professionals and restorers who answer your questions. Their instruction manual is more like a textbook with a wealth of information.

    Based on my experience I would also get their clear chromate solution to preserve the bright zinc plating. Also purchase a good regulated power supply (3 amperes minimum). It is key to calculate the surface area and adjust the current accordingly (0.14 amperes/ square inch). Ebay has many options for power supply, it is hard to regulate the current from a battery.

    Team FASTLIKEJUDY
     
  6. chasesa

    chasesa

    Joined:
    Dec 26, 2007
    I have found the Eastwood kit to be great for small parts. That's really what it is intended for. It will quickly pay for itself.

    Whether the finish will stand buffing on a wheel depends on the time in solution (read: thickness). But, the dull zinc finish will clean to a shine with fine steel wool. I found the rubbing paste to be a bit labour intensive, but compound can bring the finish to a bright shine.

    For example, I plated a set of Yamaha spokes I could not have replaced, heads of rare Yamaha panhead screws: various small sheet metal parts; axle spacers; dust shields; coil brackets. Basically, anything that was zinc or cad plated.

    Stephen
     
  7. Jdub

    Jdub

    Joined:
    Dec 1, 2018
    The basic Caswell kit is currently on sale at about $154.00 U.S. and ends ~ November 9 2019. If you miss this discount, you might call or chat with them and ask them for the discount because you intended to purchase but did not at the time of the sale.

    I will report back on how this worked for one full Commando resto. I intend on plating everything from simple bolts to the axles, rear wheel adjusters, hexagonal spacer backside of chain case, and

    If anyone has a copy of the Caswell manual I would be interested in seeing / downloading / purchasing it from you. All download sites are hackers or worse.
     
  8. Scout63

    Scout63 VIP MEMBER

    Joined:
    Nov 24, 2016
    I’ve been using the Caswells kit for plating my restoration. The learning curve is fairly steep but the results are good when they are good. I’ve become lazy about small parts (timing cover screws, etc. and gone back to ordering From Old Britts. Good luck.
     
  9. Beach

    Beach VIP MEMBER

    Joined:
    Aug 27, 2013
    I may have an extra manual. Will check today and let you know. Here is a pic of some parts I just did for a 1965 BSA. Have done 8 bikes worth with this kit. 20191029_164216.jpg
     
  10. jimbo

    jimbo VIP MEMBER

    Joined:
    Sep 25, 2004
    I have used the caswells copy cad kit, a real tedious job but the results are good. Make sure you get the proper sized glass bead too.

    DSC02838cl up.jpg
     
    Scout63 likes this.
  11. Beach

    Beach VIP MEMBER

    Joined:
    Aug 27, 2013
    Yes. Can be shiny or dull depending on the job. Also use the blue chromate which comes out clear to help plating last longer.
     
  12. Jdub

    Jdub

    Joined:
    Dec 1, 2018
    My plan is to prepare the parts using bench grinder with wire brush, then MEK or Phosphoric acid bath prior to dip into the preparation.

    What I want is a reasonably shiny finish, so I will add the blue chromate to the list.
     
  13. Beach

    Beach VIP MEMBER

    Joined:
    Aug 27, 2013
    Kit comes with degreaser. I use a crock pot for that. I also wire brush parts. Do you still need manual? If so give me email and I'll scan and send to you.
     
  14. jimbo

    jimbo VIP MEMBER

    Joined:
    Sep 25, 2004
  15. Beach

    Beach VIP MEMBER

    Joined:
    Aug 27, 2013
    Nice. Been wanting those and didn't know where to look
     
  16. jimbo

    jimbo VIP MEMBER

    Joined:
    Sep 25, 2004
    never had much luck with the degreaser.
     
  17. jimbo

    jimbo VIP MEMBER

    Joined:
    Sep 25, 2004
    buy a bunch of them they wear out and get messed up quick
     
  18. Beach

    Beach VIP MEMBER

    Joined:
    Aug 27, 2013
    Here is instructions
     

    Attached Files:

  19. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    Most zinc baths contain cyanide - what is this one ? My primary cover is a steel loop with tags for dzus fasters which hold an aluminium cover plate. The steel is zinc plated and chromate passivated. The battery acid loves it.
    Cadmium plating is much more corrosion resistant than zinc, but these days most plating shops will not do it. Also with both zinc and cad, there is the risk of hydrogen embrittlement of high tensile steel, if you don't oven-bake the components. Screws in particular can pop their heads off after being tensioned for a while.
    The way you can tell cad plating from zinc, is by immersing the bits in dilute hydrochloric acid. The zinc fizzes slightly faster.
    Where I used to work, we used cad plated Allen screws to hold two halves of rocket motors together. One of them ended up on a ship and when it was stood up for firing, the head of a screw rolled out of it and onto the deck. That motor actually carries a bloody big torpedo, when being used for real.
     
  20. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    If I was restoring a precious Commando, I would find somebody in the aircraft industry who would cadmium plate the fasteners.
     

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