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Thread: Ducati Cracked Swingarm

  1. #1
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    Ducati Cracked Swingarm

    Got a WOF on the Superlight yesterday and went for a 200 km run.
    The last SS I had was overgeared so I thought I'd do a tooth count.
    Standard factory 15/37 and fine is live near an Auto Strada or do track days.
    Not great either at the several KM crawl in and out of fecking Auckland on a weekend.

    I did however notice another bit of quality Italian engineering.Click image for larger version. 

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    According to Google not an uncommon issue.
    DeMyer's Laws - an argument that consists primarily of rambling quotes isn't worth bothering with.

  2. #2
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    The superlight was made too light in that spot.


    Don't feel bad, a run of GSXR's had cracking subframes, Yamaha recalled every R1 (2016?) and replaced the gearboxes, and on and on the list goes.

  3. #3
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    I did 200km on the Street Triple this morning with no major structural failures hope that helps
    6 grand for 2 grands worth of fun. - F5 Dave

  4. #4
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    Quote Originally Posted by HenryDorsetCase View Post
    I did 200km on the Street Triple this morning with no major structural failures hope that helps
    I did a hundred on the Ducati and all I lost was some tyre rubber and fuel

  5. #5
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    1st June 2014 - 21:23
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    That just plain sucks. atleast it shouldn't be too expensive too replace.

  6. #6
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    Quote Originally Posted by layton View Post
    That just plain sucks. atleast it shouldn't be too expensive too replace.
    But the early ones also cracked .....

    Weld it up I say.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. #7
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    Quote Originally Posted by AllanB View Post
    But the early ones also cracked .....

    Weld it up I say.
    Once I get Marlon the 53 Tbird off the bench I think that will be the plan, does the welder do house calls?

    Was going to look at the flaking paint on the cases but my mate says no as its 25 years old and Patina is where its at.

    I can't keep up, have to take the brown seat and exhaust wrap off the watch list.
    DeMyer's Laws - an argument that consists primarily of rambling quotes isn't worth bothering with.

  8. #8
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    Maybe talk to this guy for a replacement in the meanwhile?

    https://www.trademe.co.nz/motors/mot...ea7ef11860993e

    (btw I didn't actually go looking for a swingarm but hey it was the first listing)

    I've got bits off him a few times and he's always been good to deal with, might be able to get a steel swingarm for cheap to keep you going.

  9. #9
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    Quote Originally Posted by OddDuck View Post
    Maybe talk to this guy for a replacement in the meanwhile?

    https://www.trademe.co.nz/motors/mot...ea7ef11860993e

    (btw I didn't actually go looking for a swingarm but hey it was the first listing)

    I've got bits off him a few times and he's always been good to deal with, might be able to get a steel swingarm for cheap to keep you going.
    Thanks, I saw that.
    Probably look at getting the one on it repaired.
    It can just sit at the back of the shed for the time being as have other bikes to ride.
    Glad I only forked out for 3 months rego though....
    DeMyer's Laws - an argument that consists primarily of rambling quotes isn't worth bothering with.

  10. #10
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    Mocking aside how did it crack there?
    6 grand for 2 grands worth of fun. - F5 Dave

  11. #11
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    Quote Originally Posted by HenryDorsetCase View Post
    Mocking aside how did it crack there?
    They all do it sir...Various reasons, from lack of maintenance to accident damage.
    Basically it was a poor design which has been perpetuated too long.
    I wouldn't weld it - it'll only crack again.
    Low mileage sound one off ebay is probably the best answer IMO, then keep a close eye on sidefloat at the bearing.
    Reason is a tool - remember where you left it..... The late, great, John Clarke

  12. #12
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    Quote Originally Posted by HenryDorsetCase View Post
    Mocking aside how did it crack there?
    What Grump said, It could have been that way for some time.

    Other issues they have are snapping head studs, alternator failures, cracks in frame, general poor finish especially engine paint finishes, its

    summed up as character.....

    Meh, other than the V twin noise rather ride the R90/S anyways.
    DeMyer's Laws - an argument that consists primarily of rambling quotes isn't worth bothering with.

  13. #13
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    Quote Originally Posted by Grumph View Post
    They all do it sir...Various reasons, from lack of maintenance to accident damage.
    Basically it was a poor design which has been perpetuated too long.
    I wouldn't weld it - it'll only crack again.
    Low mileage sound one off ebay is probably the best answer IMO, then keep a close eye on sidefloat at the bearing.
    maybe not this one....
    https://www.ebay.de/itm/Original-Duc...RArB:rk:1:pf:0
    DeMyer's Laws - an argument that consists primarily of rambling quotes isn't worth bothering with.

  14. #14
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    For that money you'd be calling Bridges at F1.

    Steel would be considered a wonder product if discovered today. It puts up with all sorts of shit ally can't cope with. Of course a nice solid boss there, no clamp stressing it and a decent adjustment system like, hate to say it, but Honda excels at would do wonders.
    I've been told. Dreaming`s free.
    Think I'll go, back to sleep.
    Everybody listen, voices in my head
    Everybody listen, do yours say, what mine says?

  15. #15
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    Quote Originally Posted by Voltaire View Post
    What Grump said, It could have been that way for some time.

    Other issues they have are snapping head studs, alternator failures, cracks in frame, general poor finish especially engine paint finishes, its

    summed up as character.....

    Meh, other than the V twin noise rather ride the R90/S anyways.
    Way to talk me out of that 916 I've been lusting after. Honda RC51 it is!
    6 grand for 2 grands worth of fun. - F5 Dave

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