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DKW's Midnight Maxim 750

Discussion in 'XJ Technical Chat' started by DKW, Sep 1, 2017.

  1. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    According to Len....

    "His bike is a 22T frame code with a serial higher than 100000, hence a MM.......

    Len"
     
  2. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    Yes there seems to be a disruption in the force somewhere..............I'll have to go back and check my source documents (if I can find them!).

    But a 22T frame ID code with a serial # higher than 100000 should be a Midnight Maxim, although some of the VIN's that I collected over the years from various sources (including eBay bikes for sale) indicates that some MM's may also be in the "less than 100000" rnage of numbers:

    JYA22T00?DA000208 (Canadian MM)

    JYA22T00?DA000131 (Canadian MM)

    JYA22T00?DA110217 (Canadian MM)


    Note that the MM's with serial numbers lower than 100000 also had a model ID code of 22T (rather than the 33U code). It could have been than Yamaha wanted to "experiment" with creating a few MM models and they carried the same MODEL ID code as a regular Maxim (which is how it was done in the USA), and then seeing that they were popular "enough", then gave them their own model ID code, and started the serial numbers over from 000101.........

    It's hard to get definitive info on low-production bikes, especially when the parent company doesn't have or won't release such info.


    COUNTRY: CANADA

    MODEL NAME: XJ750MK
    STREET NAME: 1983 XJ750 Midnight Maxim
    MODEL ID CODE: 33U <<<<<<
    FRAME ID: 22T
    SERIAL NUMBER STARTS AT: 100101

    MODEL NAME: XJ750MK
    STREET NAME: 1983 XJ750 Midnight Maxim
    MODEL ID CODE: 22T <<<<<<
    FRAME ID: 22T
    SERIAL NUMBER STARTS AT: 000101


    Of course, you will never see a MODEL ID code anywhere on the bike----you see the FRAME ID codes on the frame----and perhaps the only place it is ever seen was on the original sales invoice?

    Luckily, in this era, the FRAME ID code = MODEL ID code 99.9% of the time. The anomalies tended to occur on low-production bikes made for small markets....for which a Canadian MM would certainly qualify as!
     
    Last edited: Sep 3, 2017
  3. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    BTW, one other clue(s) that I would look for is the small, script (cursive) emblems on the GAUGE CLUSTER HOUSING and the similar emblem on the rear seat PANEL that says "Midnight Maxim" (script, "stacked" design with the word Midnight above the word Maxim". Even if the emblems are missing, there should be outline of where it was.........

    And of course any other gold items that are unique to MM:
    - headlight bezel
    - front fork emblem (gold lettering) on black emblem, rather than black letters on a chrome emblem)
    - gas cap
    - swingarm bolt covers
    - rear brake drum (black with gold inset stripe)
    - footpeg brackets (black with gold inset stripe)
    - rear grab bar (gold)
    - engine case covers (black with gold recessed lettering)

    - the seat would be of a unique design/pattern (can't see it in any of the images), but as Dave mentioned, that is an easily substituted item from a donor bike.
     
    Last edited: Sep 3, 2017
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  4. MattiThundrrr

    MattiThundrrr Not a guru

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    Thanks to @chacal for providing the Encyclopedia of Things For Which There Is No Encyclopedia.
     
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  5. DKW

    DKW Member

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    P1060834res.jpg P1060836res.jpg

    In the sale announcement it was passed as a Midnight model, if the bike isn't the Midnight model, I assume this situation.
    The front fork emblem have golden lettering on black plastic, the side covers was repainted, but they are black with golden edges/contour. Rear bar grab was repainted too, in fact, the whole bike was painted using cheap materials.
    The bike have many parts swapped with non-Midnight model, the ex-owner had several accidents with this motorcycle.

    Btw, where is located/stamped the engine number?
     
    Last edited: Sep 3, 2017
  6. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Engine # is stamped on the right side above the clutch cover. There is a flat spot on the block, right near the oil filler and clutch cable support. But, if the engine has been swapped out, then the engine number is a moot point. The number stamped into the head tube is the important one.
     
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  7. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    The seat is definitely MM, the handlebars are MM, the front fork emblem probably is....the tail light assembly is, unless it's been painted black. The passenger foot peg mounts are MM. The shocks might be. The tank could be.

    0therwise, just about nothing else is MM
     
  8. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    Engine is definitely not MM, fenders should be black, carb hats do not appear to be gold.................

    Need a pix of the gauge cluster from the front, the MM emblem would be in the flat area in-between the tacho and speedo round "pods".
     
  9. DKW

    DKW Member

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    Unfortunatelly, the cluster is not original, and all the badges "Midnight Maxim" are missing.

    From the xjcd.org site:
    print screen.jpg
     
  10. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Ooooooo...... Somebody dared utter "xjcd" here----- I'm gonna grab some popcorn and watch the boogeymen come screaming in along with the flying banshees.
     
  11. DKW

    DKW Member

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    Why? It's a blasphemy to say "xjcd" here? Then, i'm sorry, i do not want to offend anybody... I only used as a second source.

    I know how they look, i spent many time on net and ebay searching for missing part.
     
  12. MattiThundrrr

    MattiThundrrr Not a guru

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    Many moons ago, the disk which must not be mentioned caused devastating turmoils with the great gods of copyright. Many were lost, there was much suffering, and it shall not be resurrected with careless whisperings.

    All this occurred before the time of Matti, but the legend has been passed from generation to generation.
     
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  13. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    The East Coast Partshoarder was there to witness it----
     
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  14. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    coffee spray
     
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  15. XJ550H

    XJ550H Well-Known Member Premium Member

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    black headlight bracket is also a MM ppart unless someone painted it.
     
  16. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    +1....saw it, forgot to mention it
     
  17. DKW

    DKW Member

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    Meantime, in my garage, studying the disaster... erm... this piece of art.o_O
    20170917_082758.jpg 20170917_082814.jpg 20170917_082841.jpg 20170917_082930.jpg 20170917_082945.jpg 20170917_083115.jpg 20170917_083303.jpg 20170917_083410.jpg 20170917_083527.jpg 20170917_083608.jpg 20170917_083939.jpg 20170917_084018.jpg 20170917_084144.jpg
    I must change the fork tubes, there are slightly bended, and replace all seals and ball bearings.
    End of 1st chapter.
     
  18. XJ550H

    XJ550H Well-Known Member Premium Member

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    carb to manifold boots look odd to me
     
  19. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    That's because the at least the one on cyl 1 is not the correct one for cyl 1. My bet is that #2 is the same......this is what happens when someone puts a non-yics engine on a bike that is supposed to have a YICS engine AND uses the non-yics carb-to-intake boots.
     
  20. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    Exactly correct!
     

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