1098 Eccentric Hub In M1100 Swing-arm?

Discussion in 'Technical Help' started by mickb, Sep 15, 2014.

  1. I want to see if it's possible to use a 'large' rear axle on my Monster. Hub is 112mm, s/arm aperture is 105mm.
    To get 7mm, I'd need to:
    a)machine 3.5mm from hub or
    b)machine s/arm to fit larger hub or
    c)machine both to get the clearance reqd

    Obviously opt (c) is most expensive, would prefer opt (b), but would appreciate any feedback on whether this is sensible/madness/other......
     
  2. You will need to strip both parts to see where the material can be removed from. There may only be a thin wall on the arm but plenty of meat that can be taken off the hub.
    3.5mm off the radius isn't much and should be achievable.
    Option A would be cheaper due to easier part set-up.
     
  3. Can you switch the swingarms?
     
  4. Hi final, you're right of course, I need to have a look, but I suspect the easier option is the hub.
    Hi Bradders, unfortunately not. The SBK arm has a narrower mounting, which would mean machining the engine casing, which would be an expensive option!
     
  5. Can't you get an adaptor machined to fit the BST's, saves frigging about with the hub, or is it not that simple
     
  6. Would an S4r/multistrada 1000 hub fit? I'll measure my both bikes.
     
  7. why do you want to do it....
     
  8. To fit the large spindle 1098 BST's
     
  9. chicken - egg...
     
  10. id get the measurements from your swing arm and compare to a 1098 swing arm.........i bet they aint that far away......
     
  11. what about getting a reducer to fit the outside of the wheel but the centre of the spindle......i know they do make them for the RS size wheels to fit to the standard hub...
     
  12. I would have a bespoke spindle made.
    One that has a small shaft for the hub and a bigger end and flange for the wheel.
     
  13. Hi Andy,
    sorry, who/what is FE, really interested in the adapter idea?
     
  14. ^^^^^ f-inal e-dition

    He's a whizz with solid bits
     
  15. hee hee - you said "small shaft" and "flange" :D
     
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  16. the 998 RS genuine wheels have a large hub i think this is slightly smaller than the 1098 hub maybe a similar thin g could be made for the 10-98 wheel to go on the std hub you have.......that said i think the stud spacing may be different?

    its something you would need to look into

    FE is Final edition..on here he done some machining work....

    Failing that i think the 1098 swing arm could be the way forward.......
     
  17. Hi Final,
    it seems you're the man here :) Do you think a bespoke spindle is a better route than a spacer, if so, any ideas on how I could progress this would be much appreciated....If it costs less than replacing the entire rear drive assembly it's got to be a go-er...

    thanks andy, the biggest problem is the stud-spacing between the M1100 & the 1*98 being different. Also, the s/arm for the 1*98 is significantly narrower at pivot, so I think that option is out.
     
  18. how do you mean narrower........as in the 1098 swing arm fits to an air cooled ducati engine as every other engine pretty much pre fanny gale..
     
  19. I could make a spacer but wont be able to do a shaft because of the boss for the studs and the brake disc along with the drive splines.
     
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