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Rear Wheel: Maxim vs. Seca

Discussion in 'XJ Technical Chat' started by ricklees, Sep 22, 2008.

  1. ricklees

    ricklees Member

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    I'm pretty sure I read a thread about switching Maxim rear wheel for Seca.

    I, however, don't seem to be able to find the thread now.

    So, could anyone go over the reason for switching rear wheels out
    and in what situation you would want to do this, again please.

    I know the Maxim is a 16' wheel and the Seca is a 18''
    But what are the pro's and con's of switching them?

    Thanks,

    Rick
     
  2. stereomind

    stereomind Active Member

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    with a Seca wheel, you drop the cruising RPM's a little bit (about 5%), and improve the top end. You just can't put as wide of a tire on it. Also, the brake drum assembly is a bit bigger on the Seca wheel.
     
  3. grimreaper169

    grimreaper169 Member

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    So what size tire do I need to put on the Seca 18" wheel and will my brakes still work on my Maxim? I would love to drop my RPM" by 5%. I thought I was going to have to get a hole 750 Seca final drive to do this. Now you are telling me all I need is a rear wheel. Yes life is good.
     
  4. stereomind

    stereomind Active Member

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    Seca standard size is 120/90-18... I don't remember if the spacer on the right side is the same... anyone? :roll:
    I can look when I get home.

    Brakes will work just fine, you just have to fiddle with the adjustment once the wheel is on. Just make sure that your Seca wheel has its own brake shoes and drum cover (or whatever its called).
     
  5. grimreaper169

    grimreaper169 Member

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    You might know I just put new brake shoes on
     
  6. ricklees

    ricklees Member

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    Thank You Stereomind,

    I just picked up a 82 750 Seca today $75 all the popular stuff was gone.

    But it has engine, drive train and WHEELS, lol

    No paper work as it was abandoned years ago and just left to roit I guess

    anyway property owner stored it all this time no clue what to do with it.

    Had police friend check numbers for me. not stolen so I bought it. Now I have a practice motor to mess with. My maxim thanks me for this and I get to learn some differences between the two, lol

    But I really got it for the rear wheel
     
  7. stereomind

    stereomind Active Member

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    wow, sounds like a deal. I should mention though.. don't trust the brake shoes in the old wheel.. if the bike has been rotting a while, there's a chance that the pads will separate the first time you really need them.. also, check the bearings and the splines on the differential gear for wear.
     
  8. ricklees

    ricklees Member

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    Both good points

    new brakes are a given, but I didn't think of the differential gear, this bike had 37k miles on it
     
  9. grimreaper169

    grimreaper169 Member

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    I need a seca rear!!!
     
  10. ricklees

    ricklees Member

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    LOL,

    Sorry Grim, I have plans for this one But I'll look around for ya.
     
  11. yamaha4life

    yamaha4life Member

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    I need a maxim rear
     
  12. ricklees

    ricklees Member

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    Ok here goes,

    I took the rear wheel off. Lots of break dust very smalll amount of
    white flakey spots, I assume from moisture. Drum is rusted some on the outside edge but plenty of good shoe surface otherwise. Brake shoes
    are worn about 1/8" of pad left small amount of glazing but not overheated or cracked. but I'll get new ones anyway.
    Differential gear and bearings look good move well. I assume these are sealed and not serviceable, is this correct?
    Arm on the brake plate was froze. A few wacks with a piece of oak fire wood got it to move though so will service that as well.
    Swing arm and differential removed.
    ABOUT the ENGINE:
    Is there some special trick to removing it from the frame?
    I have all the mount bolts removed but.... it's still in the frame.
    Surely I don't have to remove the head and cylinder off to get it out.
    anyone care to share some tips for removing it? lol

    Thanks,

    Rick
     
  13. SpoonDaddy

    SpoonDaddy New Member

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    As in cars As in motorcycles
    Bigger diameter of wheel and tire combo will result in
    taking more to push but higher top end at RPM

    smaller W/T Combo will result in Faster Take Off, with Less Power
    But sacrificing Top end
     

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