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Hot Rods Harman Collins Mag - What's this extra drive for?

Discussion in 'The Hokey Ass Message Board' started by AV8-Rider, Feb 28, 2012.

  1. AV8-Rider
    Joined: Jan 31, 2002
    Posts: 909

    AV8-Rider
    Member

    I've got this Harman Collins mag Model 8R101. Bought it some 10 years ago but never used it. Took out the box the other day.
    As you can see from the pics it has an extra drive shaft with it additional to the crab style Flattie stuff.

    Anyone know what this optional drive is for?
    8BA or some OHV engine mabe? I rember seeing in some old pics of guys using these mags on OHV engines in early dragsters.

    Any info appreciated.

    Paul

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    Last edited: Feb 28, 2012
  2. moefuzz
    Joined: Jul 16, 2005
    Posts: 4,950

    moefuzz
    Member

    What I see and I'm no expert.

    Shaft for 49 to 54 Flathead,

    Body and Electronics

    Mounting base for either pre 49 and/or for setting up your mag as in a distributor set up tool.

    Just guessing, others will be more knowledgeable than I.
     
  3. AV8-Rider
    Joined: Jan 31, 2002
    Posts: 909

    AV8-Rider
    Member

    Yeas the mounting base is for pre 49 Flathead.
    Looks like a base usable for both 2 and 3 bolt covers.

    [​IMG]
     
  4. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,682

    Bruce Lancaster
    Member Emeritus

    Rotation would be backward for early ignition, but many flathead-mount style HC mags were built for reverse rotation use on front drives on OHV engines with timing chains. Went on aluminum front covers like a Hilborn drive would.
     

  5. 39Truck
    Joined: Aug 20, 2007
    Posts: 260

    39Truck
    Member
    from Sweden

    Hello Paul. Yes the shaft looks like a -49-53 size but they make them to
    many others to. They are very nice this magnets , what i know they only have fixed timing but produce a great sparcle on the plugs. I have read are this a early magnet with this tag ,maybe -49 to-51 or--52 production . Too nice to have in a box,i have mine so i can see it everyday .
     

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