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Technical Harmon & Collins rotor possibly to be reproduced

Discussion in 'Traditional Hot Rods' started by 41FordSuperDeluxe, Oct 24, 2013.

  1. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    Ronnie I hope you found the MAG rotor you needed, and my reply to you back in May last year was helpful!
     
  2. Any word on the center section progress?
     
  3. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    Ah yes, the item I 'promised' by X-mas '04....... sorry to those waiting, it was delayed but I'm back on it trying to match the color of the bakelite and get a decent price on the brass castings needed for the mold to produce it now. I super hope to have the first ones done within 2~3 months.
     
    41FordSuperDeluxe likes this.
  4. ROADSTER1927
    Joined: Feb 14, 2009
    Posts: 2,513

    ROADSTER1927
    Member

    Joe, glad to see you back on the HAMB! Keep the faith, Gary:)
     
  5. Joe your rotor is Excellant and on my 1400 H&C dizzy - but I would like to get 2 mid sections when they are ready

    Best to you and thanks for your efforts
    John
     
  6. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    Have some friends wanting me to do some of the internals: 4 lobe cam etc...

    I have made a few more rotors if anyone needs some and I am trying hard to finish up the centercaps now. It is difficult (and expensive) with bakelite; want to match the color as close as possible.

    Hope everyone who bought my rotors are enjoying them! 2 people gave me a $40 deposit for the centercap~ I must make it;)
    Thought I would 'bump' the thread and let people know where I'm at with the caps!
     
  7. ROADSTER1927
    Joined: Feb 14, 2009
    Posts: 2,513

    ROADSTER1927
    Member

    Sounds Good, keep the fire burning-------Gary:D:rolleyes:
     
  8. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    BTW Gary, should be getting your new Center Cap Friday! they fit nice and should easily keep you on the road for a while running good ;)


    cntrCap4.jpg
     
    kidcampbell71 likes this.
  9. ROADSTER1927
    Joined: Feb 14, 2009
    Posts: 2,513

    ROADSTER1927
    Member

    Thanks Joe! Will let you know when it gets here! Gary
     
  10. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    Thanks for the PM Gary, I'm glad you're happy with it.

    I've sold a total of 9 so far....... I have more if anyone needs one get them while I have them!
     
  11. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    For those needing the centercaps, I have a new small batch finished. To the people I promised them to, PM me and I'll get them out asap!

    Thanks for the support :)
     
  12. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    For those still wanting to get the centercap/intermediate cap(Plate) for the H&C dual coil dizzy, I won't be making them for a while. I only sold 2 from this last batch so get um while I got um...

    o_O
     
  13. Woodie
    Joined: Dec 30, 2003
    Posts: 33

    Woodie
    Member

    I have both ( rotor and the 2nd coil adapter ring ) installed on my Engine and would like to hear from anyone that has installed these on a running Engine. Your comments or evaluation of these two units. I have experienced some ignition problems lately and would like to rule these two units out.
     
  14. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    I received your Intermediate (Centercap) Cap return, inspected the problem, and shipped out a replacement for you :)

    First, Thanks Woodie for bringing it to my attention. You were amongst 5 people in my first batch I shipped out in a panic, trying to get those HotRodders back on the road, and hadn't thoroughly inspected prior to shipping. (Your the hero here ;) you must have drawn the short straw... lol my apologies.

    I'm posting pictures and a descriptive explanation to help others understand what to look for, the cause, effect, and solution:
    The cause is in temperature variations during the mold process. 200LBs. of billet steel needs preheating prior to injecting very high temp Bakelite and then a waiting process (Cooling down evenly) staring at a stopwatch 10 minutes for each piece before exposing it to ambient air; (My rotors only took 4 minutes!) split the mold too quick and the result is hairline cracks.... too slow and the machine clogs up and have to spend 2 hours re-tooling it and repeat until everything's running smooth, cool down's timed right - kinda like baking a pound cake in a french oven I guess. Anyway, before installing always inspect for cracks please. In Woodie's case, he had a crack from the primary screw hole to 1 of 4 pin holes that support the top ring in position during manufacturing. Because the steel wasn't at the correct temp yet, the outside of the part cooled quicker than the inside leaving 'EXTERNAL VISUAL CRACKS' noticable in my pictures so please inspect before installing.

    NOTE:
    I now use JB Weld (Kwick) to insulate the 4 holes from "Leaking" high voltage secondary electricity. For any naysayers, JB-weld does not conduct electricy!!! I use it in building circuits and never have had ANY issues :)
     

    Attached Files:

    Last edited: Sep 5, 2018
    Runnin shine and RICH B like this.
  15. Woodie
    Joined: Dec 30, 2003
    Posts: 33

    Woodie
    Member

    This is an interesting find, and cause. My "Crew Chief" found the crack and cause for the short, which instantly had us running on (4) cyl's. We did not see the cracks. In the meantime we installed the original "H & C" "Center Cap" and were back running on all (8) eight This involved a lot of very difficult and frustrating trouble shooting on our part to find out where our other (4) four cyl's went. Glad that you were able to find the source and correct it. Previous posts on this subject will show that we were determined to run this ignition system ( "H & C') and now should be able to enjoy our ride. Appreciate your follow up and efforts to make this right.!! We Thank You.!!
    Steve & Patty.
     
  16. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    By looking at the Width of the trace short (1st Pic) from the pinhole to the primary lead, and me knowing the temperatures necessary creatingsuch a trace that the Harman Collins "SPARK" produced, I'd say we have empirical evidence proving an extremely long (dwell), and very strong & hot spark. In my near 40 years some as a line mechanic I've seen many distributor caps with trace shorts but never have any showed signs of melting or exploding away the material! there was even carbon brush material transfer in 4 evenly spaced areas on the top brass ring! I was amazed when I inspected it.

    Summing it up, H&C is definitely a distributor of choice, and a criminal act if lost in time..... my 2 cents anyway :cool:
     
    Runnin shine likes this.
  17. DzusFast
    Joined: Oct 28, 2013
    Posts: 26

    DzusFast
    Member
    from Nevada

    [​IMG]

    So, I got an order for ONE centercap the other day -- out of the blue, and found only TWO usable , inspected them adding the epoxy to ensure no problems but it got real serious real fast.

    Only ONE centercap left. Thought I'd share this with the community.
     

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