Cracked case and roadside repair ?

Discussion in 'Motorbike Technical Discussion' started by Rob Kleinschmidt, Jun 11, 2007.

  1. Hanging out at Alices yesterday afternoon when a guy on a
    Triumph pulled in escorted by a CHP. He'd spilled a few miles
    down the road and the CHP dude had very kindly escorted
    him up as far as Alices.

    When the bike spilled, it apparantly cracked the clutch housing
    and was continuously dripping small amounts of oil. The rider
    was about 15-20 miles from home. He bought a couple quarts of
    20-50 and planned to ride home slowly, stopping every few miles
    to replenish his oil. This was probably a little iffy because the
    drip was only an inch or two off from the track of the rear tire,
    but he figured he'd ride slowly and stay off the freeway.

    Given a leaky case that's already covered in oil, is there any
    handy repair compound that might have actually gotten him
    home ? Seems like you could maybe lay the bike on its side,
    clean the case and then apply an epoxy compound or maybe
    even road tar and limp home. I've never been in that kind of
    spot but wonder if there's a possible fix.
     
    Rob Kleinschmidt, Jun 11, 2007
    #1
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  2. Rob Kleinschmidt

    Thumper Guest

    I've never been in that spot either. It would seem to me that any "fix"
    would be difficult, due to the viscosity of the oil. Nothing would seal
    unless the oil was completely removed from the crack with solvent.

    In so far as the leaking oil. No problem! I've seen guys ride up to the Rock
    Store with tin cans strapped to the back of their Brits. They would place
    them under the bike while they rested and put the oil back in the bikes when
    they left.
    I'm sure he made it home fine.


    --


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    "Of course, you'll have the good taste not to mention that I posted this."

    Thumper

    "I don't want a pickle..."
    http://www.thumpers-roadhouse.ws

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    Thumper, Jun 11, 2007
    #2
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  3. Rob Kleinschmidt

    James Clark Guest


    Not that you have any personal experience?
     
    James Clark, Jun 11, 2007
    #3
  4. Rob Kleinschmidt

    Sean Guest

    I did that with a Honda S90 and did more than just limp home,
    I ran it for a year or so until I sold it.

    Sean_Q_
     
    Sean, Jun 11, 2007
    #4
  5. Rob Kleinschmidt

    timeOday Guest

    I knew a guy who accidentally jumped his jeep into a ditch because the
    telephone maintainece road he was driving on had washed out. After he
    regained consciousness(!) he noted a steady stream of oil draining from
    the pan. He jammed a hankerchief into the hole and drove home.
     
    timeOday, Jun 11, 2007
    #5

  6. As other say, withoput cleaning off all the oil, not much will work
    properly.

    But once the oil is cleaned off, epoxy or Chemical Metal (similar stuff
    with added powdered metal) works wonders.
     
    The Older Gentleman, Jun 11, 2007
    #6
  7. Rob Kleinschmidt

    OH- Guest

    Make a two staged repair. Lay bike on its side to get oil away
    from the crack, clean area and put a small amount of some
    epoxy magic stuff along the crack.
    When this has cured you hopefully have a chance to really clean
    the cracked part and maybe brush it or sand it a little to give
    a slightly better repair. Apply more magic stuff.

    I did a very successful repair this way but in that case it was
    not a crack but a hole (stamped trough the sidecase by the
    edge of the brake pedal). This was a permanent repair by
    gluing on a coin. Quite stylish and corrosion resistant.
     
    OH-, Jun 11, 2007
    #7
  8. Rob Kleinschmidt

    sqidbait Guest

    On Jun 11, 12:09 pm, Rob Kleinschmidt <>
    wrote:
    [snip]
    Well, my first reflex is to say "Duct tape." Lots
    and lots of duct tape...

    -- Michael
     
    sqidbait, Jun 12, 2007
    #8
  9. Rob Kleinschmidt

    Warren Weber Guest


    Look at Permatex gas tank repair epoxy. Instructions say it can be put on a
    "wet leaking tank" May work with oil also. Two part putty type stick. Knead
    until one color and press into leak. Two hours to set up. Also somewhere
    (where???) May have been a JC Whitneys catalog. I saw an ad for a tape made
    for this purpose that could be applied to a "wet" tank leak and sealed. W W
     
    Warren Weber, Jun 12, 2007
    #9
  10. As far as gas tanks go, a bar of hand soap rubbed into a hole or crack
    with react with the gasoline and make a temporary fix. I did this on a
    car with a 27 gal. fuel tank when I punched a hole in it right after
    filling up. Drove it until the tank was almost empty before removing the
    tank for a proper repair.

    Might work for oil too, I haven't needed to try that.

    Les
     
    Project Magnet #1, Jun 12, 2007
    #10
  11. Bubble gum? Hey I'm just saying...
     
    Keith Schiffner, Jun 12, 2007
    #11
  12. Good thought. I guess if you were a real diehard rider,
    you could experiment a little beforehand and actually
    have the right stuff in your spares kit.

    It's a less than perfect fix for gas tanks BTW, but can
    definitely slow a leak way down.
     
    Rob Kleinschmidt, Jun 12, 2007
    #12
  13. Rob Kleinschmidt

    sqidbait Guest

    Now you're just being silly!

    -- Michael
     
    sqidbait, Jun 12, 2007
    #13
  14. Not really...you'd be amazed at the things repaired (temporarily) with bubble
    gum. Silly would be duct tape, that stuff just wont stick if oil has ever been
    on a part.
     
    Keith Schiffner, Jun 12, 2007
    #14
  15. It will if the oil residue is properly cleaned. We do this at work all
    the time to prevent welding slag from getting into the seats of
    expensive pipeline ball valves.

    Les
     
    Project Magnet #1, Jun 12, 2007
    #15
  16. Was that milspec or standard bubblegum ? I'd be surprised if
    it would adhere well to a hot casing, though I suppose the
    heat might actually help vulcanize it on.

    My first choice would probably be that frikking road tar
    that I'm still trying to scrape off my engine fins.
     
    Rob Kleinschmidt, Jun 12, 2007
    #16
  17. Rob Kleinschmidt

    Polarhound Guest

    There is a material, similar to JB Weld, that is used to repair cracks
    in cast-iron boilers. You roll it out into a string and pound it into
    the cracks.

    The name escapes me, but I can find out tomorrow.
     
    Polarhound, Jun 12, 2007
    #17
  18. Rob Kleinschmidt

    BrianNZ Guest


    What sort of guys hang out at Alices!?.....a bunch of wannabe posers!?

    Surely one of them would have offered the guy a ride home while someone
    else organised a ute to take his bike home for him!....Shit, it's only
    15-20 miles. Where is the compassion.........
     
    BrianNZ, Jun 12, 2007
    #18
  19. Standard nickle gum you get in the nice wax paper wrapper for $.05
    Too likely to dissolve from the oil and gas...
     
    Keith Schiffner, Jun 12, 2007
    #19
  20. I've got some in the garage, and like you, can't remember the name!
     
    The Older Gentleman, Jun 12, 2007
    #20
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