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Maxim 400 Build Project

Discussion in 'Hangout Lounge' started by notnotkarl, Sep 11, 2015.

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  1. rocs82650

    rocs82650 Well-Known Member

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    5 minutes is a bit of time for it running on the battery alone. You can bring the ec (choke) to idle rpms and run it for a couple blocks under load to bring it to operating temp faster. Doing this won't hurt it. Just saying.

    Gary H.
     
    rocs82650, Oct 11, 2015
    #51
  2. notnotkarl

    notnotkarl Member

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    Gary - yeah that'll be the plan but right now the electrics / seat etc are all off so can't ride it! Trying to get it into riding condition before the weather gets too cold here.

    Another question. I really want to remove the stock exhaust and put something maybe a 2-1 or just something that's more brat like. Any good after market alternatives for this bike?
     
    notnotkarl, Oct 11, 2015
    #52
  3. rocs82650

    rocs82650 Well-Known Member

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    K-moe informed me that there are a couple companies that sell complete aftermarket exhaust systems for these bikes (I thought Mac was about the only one). I can't remember if he named them. The Mac system is on eBay.

    Gary H.
     
    rocs82650, Oct 11, 2015
    #53
  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Marving is another: http://marving.co.uk You'll need to look around to fing a U.S. distributor.
     
    k-moe, Oct 11, 2015
    #54
  5. notnotkarl

    notnotkarl Member

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    Moved on to clip ons - can't work out if my forks are 33 or 35mm - what size are they on the maxim 400? My tape measure is inches so hard to measure mm (I know I need a new one)
     
    notnotkarl, Oct 17, 2015
    #55
  6. hogfiddles

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

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    Digital calipers will tell you instantly......
     
    hogfiddles, Oct 18, 2015
    #56
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  7. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Dial calipers will tell you with style though.

    If you have neither, use a length of string to wrap around the fork leg, mark it at the overlap, and then measure between the marks on the string using a ruler.
     
    k-moe, Oct 18, 2015
    #57
  8. hogfiddles

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

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    That string will only tell circumference...
     
    hogfiddles, Oct 18, 2015
    #58
  9. MattiThundrrr

    MattiThundrrr Not a guru

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    Mathematics will tell you radius and diameter. Anybody for some pi?
     
    MattiThundrrr, Oct 18, 2015
    #59
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  10. hogfiddles

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

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    Yeah, but just measuring the string won't.... You have to use algae bra.

    I'll just use the calipers..... I'm not a mathemagician
     
    hogfiddles, Oct 18, 2015
    #60
  11. MattiThundrrr

    MattiThundrrr Not a guru

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    πRsquared? All my pies are round!
     
    MattiThundrrr, Oct 18, 2015
    #61
  12. Alan63

    Alan63 Active Member

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    Circ
     
    Alan63, Oct 18, 2015
    #62
  13. notnotkarl

    notnotkarl Member

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    I assumed there was a measurement in a service book I don't own but should!
     
    notnotkarl, Oct 18, 2015
    #63
  14. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    There probably is, but since so few of the 400s were imported you might have difficulty finding one. Then there is the issue that there are misprints in almost every service manual ever printed.....

    As mentioned, circumfrence/ 3.14 will get you the diameter of the fork legs within the tolernace that you need (they all come in 1.0 mm or 0.5 mm increments regardless of manufacturer).
     
    Last edited: Oct 18, 2015
    k-moe, Oct 18, 2015
    #64
  15. notnotkarl

    notnotkarl Member

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    It felt great to finally get out on this thing yesterday. Thanks everyone for helping make it happen.
     

    Attached Files:

    notnotkarl, Nov 1, 2015
    #65
    rocs82650 likes this.
  16. hogfiddles

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

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    Applause!!!!
     
    hogfiddles, Nov 1, 2015
    #66
  17. notnotkarl

    notnotkarl Member

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    I've got lots of work to do this winter - but cables / zip ties are a mans best friend so I make a temporary seatpan setup and hit the open road before the weather got too cold. As long as it stays mild I'll be riding it as is. Then it's a complete strip and build up.
     
    notnotkarl, Nov 1, 2015
    #67
  18. SraWratS

    SraWratS Member

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    Pictures
     
    SraWratS, Nov 1, 2015
    #68
  19. Skwerly

    Skwerly Member

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    Nice thread, will be fun to follow. :)
     
    Skwerly, Nov 2, 2015
    #69
  20. notnotkarl

    notnotkarl Member

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    Rough around the edges! image.jpeg
     
    notnotkarl, Nov 2, 2015
    #70
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  21. notnotkarl

    notnotkarl Member

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    A problem from a while back hasn't been resolved. The headlight is bright with the key in but as soon as I hit the electric start it goes dim. When I'm riding it flickers bright when I hold in the clutch. I can't ride at night currently. Could this be a grounding issue?
     
    notnotkarl, Nov 3, 2015
    #71
  22. Alan63

    Alan63 Active Member

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    Sounds like it may well be .
    I would not rule out regulator either..
     
    Alan63, Nov 3, 2015
    #72
  23. Alan63

    Alan63 Active Member

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    Dirty contacts perhaps as well
     
    Alan63, Nov 3, 2015
    #73
  24. notnotkarl

    notnotkarl Member

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    The brake light is fine. So I don't think it's the regulator. I'm going to do some ground testing
     
    notnotkarl, Nov 3, 2015
    #74
  25. Skwerly

    Skwerly Member

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    Grounds. Always grounds.
     
    Skwerly, Nov 3, 2015
    #75
  26. notnotkarl

    notnotkarl Member

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    Fixed. Had a bad ground
     
    notnotkarl, Nov 4, 2015
    #76
  27. SraWratS

    SraWratS Member

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    When I had a bad voltage regulator the lights oscillated bright-dim about the frequency of a cop car light.

    From dealing with boat trailers and bad grounds, I highly recommend coating all electrical contacts with a generous plop of dielectric grease before connecting.
    Always keeps great contacts, the corrosion away and the dielectric properties keep it from shorting out.
     
    SraWratS, Nov 4, 2015
    #77
  28. notnotkarl

    notnotkarl Member

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    When I got it and how it is currently (not done yet)
     

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    notnotkarl, Nov 5, 2015
    #78
  29. XJ550H

    XJ550H Well-Known Member Premium Member

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    did you just flip the handle bars 180 and down?



    apple sauce and pie Im hungry now:rolleyes:
     
    XJ550H, Nov 5, 2015
    #79
  30. notnotkarl

    notnotkarl Member

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    Yeah. I did. I'm planning on clip ons but no one here can tell me my fork diameter :) (I just need to go get digital calipers)
     
    notnotkarl, Nov 5, 2015
    #80
  31. XJ550H

    XJ550H Well-Known Member Premium Member

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    we would only be guessing at that but
    XJ550 Seca fork tubes are 35mm OD,
    it does look like a seca style front end

    my maxim 550 is 35.84 mm which probaly means 35.5 or 36 mm with the +_ tolerances
     
    Last edited: Nov 5, 2015
    XJ550H, Nov 5, 2015
    #81
  32. notnotkarl

    notnotkarl Member

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    Thanks! Going to order some this weekend!!
     
    notnotkarl, Nov 5, 2015
    #82
  33. David Wood

    David Wood New Member

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    Any updates on the bike?! Just found this thread, and man I'm glad I did! I'm about to embark on a similar journey with an '83 Maxim 400 except I plan to do a cafe racer.
     
    David Wood, May 11, 2016
    #83
  34. hogfiddles

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

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    36 - 550 Maxim
    35 - 550 Seca, xs400 Maxim, possibly xs400rj
    34 -
    33 - xs400 ('77-'81)
     
    hogfiddles, May 11, 2016
    #84
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