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750ss 1995 Swingarm Damaged From Exhaust Bracket - Repair?

Discussion in 'Supersport (1974-2007)' started by gurth, Jul 16, 2022.

  1. Took my exhaust off today and spotted this cut on the swimgarm - oO er!

    1. We’re the 750SS swimgarms aluminium, mine is?
    2. Can this be repaired?

    97EF926E-A067-4FFE-A2B5-1985D5649181.jpeg
     
  2. Original exhaust on the bike. Wondering if the bike had been dropped on that side prior to me and the clamp is slightly bent.

    Will investigate local fabricators and keep you posted. And thanks.
     
  3. just a thought, from the image suspect this has taken some time to occur, saw a similar rash on a 888 strada I went to look at, a previous keeper had reassembled the exhaust hanging bracket the wrong side of the rear foot peg, consequently it clouted the swingarm on full swingarm travel.
     
  4. Earlier that morning before I started. looks to be the right side of the rear foot peg assembly. I would say that the bike is not symmetrical when looking at it from the rear, the other side exhaust sticks out further. Thought I had a photo….

    C4452B47-9ADB-4E7F-BFFD-670E25019796.jpeg
     
  5. Quick google search and these look more symmetrical. I will need to put the exhaust back on to be sure.

    69AA5D6D-5F77-4908-8153-32126AA4CA3E.jpeg
     
  6. I had similar damage to an SS swingarm years ago when a sprocket nut came loose and carved a shallow channel in it. Got a local tig welder to sort it.
     
  7. there's not much in it, just enough for the fixing bolts to clout the swing arm, it's unfortunate, as the bike appears otherwise well cared for, looks lovely, as others have said I'm sure a good welder will have it as good as new for you.
    edit:
    stock image, silencer mount visible "outside" of foot rest hanger.

    OAHZHHMB5JHSBKXIEFBJFTVGNU.jpg
     
    #7 WAH900ss, Jul 17, 2022
    Last edited: Jul 17, 2022
    • Like Like x 1
  8. B5838CDE-B7E3-4AFD-AEA7-AC44BB17EF7F.jpeg Outside indeed :upyeah:

    Hard to tell but the hanger does not have much of a kink too it that side either.
     
    • Like Like x 1
  9. yes, would have a thought a dogleg of some sort was required?
     
  10. It has fought but finally managed to remove the swing-arm. Have found one chap who said he can have a go out pathing up the damage. Had one guy say he did not want to touch it.

    A couple of the captive nuts (highlighted) on the other side are spinning. Any suggestions on how to fix something like that please?

    Pasted_Image_29_07_2022__8_31_pm.png
     
    • Like Like x 1
  11. Riv-nuts, or the like? the originals maybe salvageable with a similar tool perhaps.

    edit: re the welding repair, it's extruded box section, should be relatively straightforward, from experience the problematic stuff has been the alloy castings eg: fork leg bottoms (porosity) see if you can find a welder with airframe / top level motorsport experience.
     
    #11 WAH900ss, Jul 30, 2022
    Last edited: Jul 30, 2022
  12. Those captive nuts are only to hold the hugger, could use a bit JB Weld perhaps if you could get I'd down the edge? The alloy welding that you need done isn't much, and it's where the swingarm is strong, not sure why someone wouldn't touch it. Maybe not confident in their ability?
    Good luck anyway, hope it gets sorted.
     
  13. I know of a good aluminium welder, Rotherham/Doncaster area, if that's any use.
     
  14. Came out nice.

    86FD24A3-C645-499A-9BA0-6B295F7B810F.jpeg
     
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  15. What would be the best way clean up the swingarm, take out those odd nicks and marks. 120 grit? Do not want it polished just a little tidier.
     
  16. They made a nice job of that. I think I used some blunt 80 grit to put the brushed effect back on something I did so 120 would probably be fine.
     
    • Like Like x 1
  17. Scotchbrite grey or maroon, go with the grain.
     
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  18. Starting to put this swingarm back onto the engine / frame.

    Between the swingarm and the engine I have 2 shims, one for either side of the engine and swingarm:
    https://www.stein-dinse.biz/images/product_images/popup_images/85210011a.jpg

    Closer inspection and one of the shim has another very thin shim stuck to it with grease:
    https://www.stein-dinse.biz/images/product_images/popup_images/85210031b.jpg

    Anyone seen this before, which side of the bike has the "2" shims? They have the same diameter hence me not noticing until today.

    I am reading this was a factory add to eliminate and slide play.
     
  19. that really is first class. The finished item was originally treated to a process to achieve that slightly more "silvery" appearance i believe. Only my opinion but unless you plan to re-create this I would leave as is.
     
    • Agree Agree x 1
  20. from memory, sprocket side is about 1.8mm and the balance of shims go in the other side.
     
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