POLL: stator / alternator failure on F800GS/F650GS twins please vote!

Discussion in 'Parallel Universe' started by JRWooden, May 6, 2012.

?

Please vote your situation & mileage AT FAILURE or multiple failures

  1. NO failure - current mileage 0 - 20K miles

  2. NO failure - current mileage 20K - 40K miles

  3. NO failure - current mileage 40K - 60K miles

  4. NO failure - current mileage 60K+ miles

  5. YES - one failure at: 0 - 20K miles

  6. YES - one failure at: 20K - 40K miles

  7. YES one failure at: 40K - 60K miles

  8. YES one failure at: 60K+ miles

  9. MULTIPLE FAILURES

Multiple votes are allowed.
Results are only viewable after voting.
  1. JRWooden

    JRWooden Long timer

    Joined:
    Jul 5, 2008
    Oddometer:
    4,329
    Location:
    The great state of confusion
    It seems there have been many stator failures in the F800GS & F650GS twins due to overheating.
    The stator runs in a very confined space with no provisions for air or oil cooling.
    BMW has recently released a redesigned flywheel which will likely remedy the problem.
    You can read all about it here: www.advrider.com/forums/showthread.php?t=706033
    Post #399 has pictures of the new and old parts ...
    Unfortunately, for those of us that are out of warranty, the new "generator set" is ~$900 USD.

    The purpose of this POLL thread is two-fold:

    1) Capture failure data vs. mileage (please vote even if you have NOT had a failure)
    So as to determine the extent of this problem, and at what mileage failure is likely...

    2) To PLEAD WITH ALL USA OWNERS that have experienced a failure to file a complaint with the US Government, regarding the issue esp. if you experiences surging or stalling (I would expect stalling) during the failure incident. (See post #420 of the above thread for details). This may help get resolution for the issue.
    File a complaint(s) here: https://www-odi.nhtsa.dot.gov/ivoq/
    #1
  2. dmasliah

    dmasliah Adventurer

    Joined:
    Mar 8, 2009
    Oddometer:
    40
    Location:
    Middleton, Wi.
    2009 f800gs, No stator failure yet. I only have 8000 miles on the bike.
    #2
  3. rockinrog

    rockinrog Long timer

    Joined:
    Mar 5, 2008
    Oddometer:
    2,962
    Location:
    Central PA
    I really hated to vote in fear that I may jinx myself:eek1
    #3
  4. JRWooden

    JRWooden Long timer

    Joined:
    Jul 5, 2008
    Oddometer:
    4,329
    Location:
    The great state of confusion
    :lol3

    yeah... maybe ...

    I'd like to see lots more votes, but at this point ~20% of the bike over 20K miles have experienced a failure..... :cry
    #4
  5. sturgeon

    sturgeon Been here awhile

    Joined:
    Jun 27, 2007
    Oddometer:
    956
    Location:
    Great White North
    Possibly due in part to the nature of such polls. I think you're unlikely to see anything close to true numbers of non-failures. I voted No Failure in over 20K miles, but I suspect most won't either even see this, or bother to look at it if they do, or bother to vote.
    #5
  6. JRWooden

    JRWooden Long timer

    Joined:
    Jul 5, 2008
    Oddometer:
    4,329
    Location:
    The great state of confusion
    I agree...
    I want a STICKY
    Who do I see about a STICKY ... :lol3
    #6
  7. sturgeon

    sturgeon Been here awhile

    Joined:
    Jun 27, 2007
    Oddometer:
    956
    Location:
    Great White North
    Is that anything like a wedgie? :lol3
    #7
  8. JRWooden

    JRWooden Long timer

    Joined:
    Jul 5, 2008
    Oddometer:
    4,329
    Location:
    The great state of confusion
    Man................. I hope not... I can put my stock seat back on if I ever want one of those.............. :rofl
    #8
  9. vtbob

    vtbob wanderer

    Joined:
    Jun 20, 2009
    Oddometer:
    618
    Location:
    Western Vermont
    Like that has been said, the numbers of those with out failures will be light.
    This group is a bit self selecting,,,focusing on this problem.
    Still the number of failures are significant. And with this admittedly small sample, time correlated to usage.

    A speculative conclusion 1 in 3 bikes will have this failure in the 20=40k mile bracket
    1 in 5 bikes will have this failure in the 40-60k mile bracket


    good work!
    #9
  10. rockinrog

    rockinrog Long timer

    Joined:
    Mar 5, 2008
    Oddometer:
    2,962
    Location:
    Central PA
    I don't know about "no failure" replies being light. It looks like around 85% of those that have responded are reporting no failure.
    #10
  11. CheckerdD

    CheckerdD Long timer

    Joined:
    Apr 30, 2005
    Oddometer:
    1,313
    Location:
    Dave Rankine, Reno NV
    The "no failures" seem to have it. Tipical of the internet. Prior to the poll the guy with the loudest mouth wins. Dave
    #11
  12. rockinrog

    rockinrog Long timer

    Joined:
    Mar 5, 2008
    Oddometer:
    2,962
    Location:
    Central PA
    Of course 54% of those have less than 20,000 miles.
    #12
  13. MonsterJ

    MonsterJ I have motopsychosis

    Joined:
    Sep 16, 2008
    Oddometer:
    262
    Location:
    Bay Area, CA
    I wish I could vote twice but it won't let me. I've got 2 '09 F800GS and both stators have failed. One at 25K and the other bike's failed at 50K.
    #13
  14. skamikazee

    skamikazee Novi├žo

    Joined:
    Mar 24, 2009
    Oddometer:
    245
    Location:
    Portugal, Lisbon
    Actually the numbers on this Poll aren't that optimistic, if you do the math theres a 36% chance of your stator failing after 20K miles.
    but if you take into acount that only the minority of the non faulty stator care to vote, and probably everyone on this forum with a faulty has voted (if they kept the bike) :rofl
    #14
  15. JRWooden

    JRWooden Long timer

    Joined:
    Jul 5, 2008
    Oddometer:
    4,329
    Location:
    The great state of confusion
    IIRC, it was Joel's opinion that stator failures would not happen until ~40K miles ...
    It takes many miles of cooking to git 'r done ... :freaky

    Happy riders are of course less likely to vote.
    We do have a pretty "young" population of bikes here....
    So yeah... I don't think its "fair" to count the < 20K mile user base....

    I'm going to open a separate poll for the F800S / ST users when I get time....
    The fiche says they have the same generator set and they should have more miles on the bikes....

    As I mentioned in the stator thread, I am optimistic that ElectroSport may come to the rescue of those of us out of warranty.
    #15
  16. AKTroy

    AKTroy BE AWARE OF TRAINS

    Joined:
    Feb 23, 2006
    Oddometer:
    2,230
    Location:
    Eagle River, AK / Port Saint Lucie FL.
    I'm afraid as soon as I vote it'll quit!:wink:
    #16
  17. rockinrog

    rockinrog Long timer

    Joined:
    Mar 5, 2008
    Oddometer:
    2,962
    Location:
    Central PA
    It looks like we are up to 14/32 for over 20,000 miles. According to my math that is about a 44% failure rate.
    #17
  18. JRWooden

    JRWooden Long timer

    Joined:
    Jul 5, 2008
    Oddometer:
    4,329
    Location:
    The great state of confusion
    #18
  19. Bullettwo

    Bullettwo Adventurer

    Joined:
    Dec 16, 2007
    Oddometer:
    50
    Location:
    Southern Oregon Coast
    My 2009 F650 GS has about 9500 miles on it. No stator problems at this point. I plan to put some miles on this bike this summer. I hope they are trouble free miles.
    #19
  20. JRWooden

    JRWooden Long timer

    Joined:
    Jul 5, 2008
    Oddometer:
    4,329
    Location:
    The great state of confusion
    If I had to guess, starting with a base of 10K miles you will be fine for the summer.
    The numbers here are still evolving, but likely you are not at much risk until at least 30K+ miles.

    I would recommend you add some kind of voltage monitor since we have none.
    Based on reports from people that have "got the T-shirt" you have ~1 hour of riding time once the stator blows,
    assuming you don't stop & restart the bike or use heated gear. Unscrewing the low beam headlight is a help.

    There are a number of monitors out there to choose from, here's the one I put on:

    http://f800riders.org/forum/showthr...g-Battery-Voltage-Monitor-amp-amp-GPS-adapter
    #20