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Thread: control connection block and carburetor control rod question

  1. #1
    Join Date
    Aug 2013
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    Default control connection block and carburetor control rod question

    I'd appreciate if you could answer a few questions for me. I am helping a local buddy get his 29 together.

    Re: 1929 JD model, the various throttle/oiler control parts. I've been reading the parts book and would appreciate if you can tell me if my understanding of what i am reading is correct.

    If i understand correctly, for the 29JD, the parts book calls for the 3368-28 control connection block, the 3363-28A carburetor control rod, the 3370-29 carburetor control connection, and the 1238-24 throttle lever.

    I'm trying to understand the relationship between the throttle/oiler control wires and the control connection block, the control rod, the control connection, and the throttle lever.

    1. Does the 3362-28 control block connect the throttle and oiler control wires ?

    2. Does the the 3363-28A carb control rod attach to the 3370-29 carb control connection and this connection attaches to the 1238-24 throttle lever ?

    An ebay seller has control blocks and rods for sale. He says they will fit the 29JD. However, the pn's he has available are not what the parts book calls for.

    1. The 3363-29 block seller has for sale, parts book says are for 30-31 twins.
    2. The 3363-28 rod seller has for sale, parts book says are for singles and 45's.

    3. My question is this - Will the seller's 3362-29 block and seller's 3363-28 rod work for the 29JD, given parts book calls for pn's 3362-28 block/3363-28A rod for the 29JD?

    Here is seller's ebay auction - https://www.ebay.com/itm/HARLEY-LINK...JXCQNK&vxp=mtr

    Here is picture from 27-31 parts book - 20171028_160345.jpg
    Last edited by Steve Swan; 10-28-2017 at 06:40 PM.

  2. #2
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    Palmerston North, New Zealand
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    Here's how it sits on one of my spare 1929 motors.
    The first two photos show the bracket and wire as attached to the oil pump.
    The third photo shows a general view of everything up top.
    The fourth photo shows the bracket, connection block and wires as they are connected and are mounted on the front cylinder.
    The fifth photo shows the throttle block and throttle arm.
    The final photo on the next post shows the bracket that holds the oiler wire on the rear cylinder.
    Attached Images Attached Images
    Last edited by Tommo; 10-29-2017 at 12:34 AM. Reason: spelling
    Peter Thomson, a.k.a. Tommo
    A.M.C.A. # 2777
    Palmerston North, New Zealand.

  3. #3
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    Final photo
    Attached Images Attached Images
    Peter Thomson, a.k.a. Tommo
    A.M.C.A. # 2777
    Palmerston North, New Zealand.

  4. #4
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    Tommo, Thank you very much for taking the time to take these pictures and post them. They are very helpful.

    In the first photo, what is the control coil for that appears to come out the bottom of the oiler?

    What DLX number is the carburetor on your engine?
    Last edited by Steve Swan; 10-29-2017 at 02:18 AM.

  5. #5

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    Steve
    I'm not in New Zealand looking at Tommo's engine,but I would guess that is the extra length of the control coil for the distributor that is simply wrapped around the engine. It looks like it wraps around the front and then is tucked in behind the gearcase.
    Mark

    Tommo
    Thanks from me also. Great pictures of how that rat king is all connected.
    I've always found it odd that the front 1929 coil bracket is available as a reproduction but that the rear is not.
    The rear also seems much more difficult to find in the bottom of boxes at swap meets whereas the fronts pop up from time to time. Got a box of spare rears on the shelf where you could spare a few?
    Thanks
    Mark Masa

  6. #6
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    Mark's correct.
    The spark control coil is looped around the engine.
    Carb is a DLX58
    Peter Thomson, a.k.a. Tommo
    A.M.C.A. # 2777
    Palmerston North, New Zealand.

  7. #7
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    Tommo, from what i understand, and i may be wrong, it seems there is not certain clarity what DLX number was fitted to the 29JD. is this true? is the DLX58 the correct carb for the 29JD. my buddy is using a DLX55, that Tom Cotten so masterfully rebuilt and conserved to JD specs. And, again, thank you for sharing the pics of your 29 engine.

  8. #8
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    Quote Originally Posted by MMasa View Post
    Steve
    I'm not in New Zealand looking at Tommo's engine,but I would guess that is the extra length of the control coil for the distributor that is simply wrapped around the engine. It looks like it wraps around the front and then is tucked in behind the gearcase.
    Mark

    Tommo
    Thanks from me also. Great pictures of how that rat king is all connected.
    I've always found it odd that the front 1929 coil bracket is available as a reproduction but that the rear is not.
    The rear also seems much more difficult to find in the bottom of boxes at swap meets whereas the fronts pop up from time to time. Got a box of spare rears on the shelf where you could spare a few?
    Thanks
    Mark Masa
    Thanks Mark, for your reply. my buddy has a rear bracket repro, but i do not recall it having the 2 pieces held together by a screw. i will do a bit more researching top see what he has.

  9. #9
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    Before I make an educated guess with regard what carb is right for what model we need to be very clear as to what bike we're talking about.
    61" J model or a 74" JD.
    All to often people ask questions regarding a J model but call them a JD.
    This is not right and causes confusion.
    Most but not all parts are common to both bikes so before I answer your question I wish to know exactly which model you are talking about.
    Peter Thomson, a.k.a. Tommo
    A.M.C.A. # 2777
    Palmerston North, New Zealand.

  10. #10
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    Quote Originally Posted by Steve Swan View Post
    ...my buddy is using a DLX55, that Tom Cotten so masterfully rebuilt and conserved to JD specs...
    Just for clarity, Folks!

    I conserved what was sent to me, specs aside.

    As Steve notes, the literature varies greatly upon what is "correct", and many existing DLXs are un-documented, so far...

    "Correct" is an existential problem for the judges, not me.

    ....Cotten
    Last edited by T. Cotten; 10-29-2017 at 04:07 PM.
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

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