Left handed threads in right mirror stalk?

Discussion in 'GS Boxers' started by Tallguy 1, Jun 26, 2020.

  1. Tallguy 1

    Tallguy 1 Adventurer

    Joined:
    Jun 9, 2020
    Oddometer:
    26
    Location:
    east sf bay area
    Why did BMW put left handed threads on my right mirror stalk?? R1100gs At first I thought it was so when you were doing 150 MPH on the Autobahn that the wind would not unscrew the mirror. Then I realized that the left mirror would be the one that the wind could affect. Maybe the right mirror has left hand threads so when you "lay it down" the mirror simply rotates back?
    Please enlighten me. Mike
    #1
  2. JimVonBaden

    JimVonBaden "Cool" Aid! Supporter

    Joined:
    Feb 11, 2005
    Oddometer:
    91,396
    Location:
    Alexandria, VA
    Self enlightened.
    #2
    Callisto224 and ultane like this.
  3. Tallguy 1

    Tallguy 1 Adventurer

    Joined:
    Jun 9, 2020
    Oddometer:
    26
    Location:
    east sf bay area
    So which is it ?
    #3
  4. Tallguy 1

    Tallguy 1 Adventurer

    Joined:
    Jun 9, 2020
    Oddometer:
    26
    Location:
    east sf bay area
    Oh I get it. The highlighted option. Little slow here. Are the newer GSs like that? Are all BMWs that way or maybe just the dual purpose ones?
    #4
  5. b_rubenstein

    b_rubenstein Been here awhile

    Joined:
    Apr 4, 2018
    Oddometer:
    226
    Location:
    Melbourne, FL
    Most motorcycle manufactures use a combination of Left & Right hand threads on mirrors so they fold back in a fall.
    #5
  6. jmb711

    jmb711 Adventurer

    Joined:
    May 2, 2019
    Oddometer:
    64
    Location:
    Northern Nevada
    Or just German engineering?
    #6
    Peltsi likes this.
  7. Lead Wrist

    Lead Wrist Mehr Gelände Weniger Straße

    Joined:
    May 26, 2007
    Oddometer:
    6,939
    Location:
    Zer0-Zer0-Zer0-Zer0
    Not really... I was demoing one of the other mfgrs' bike today and it had same set-up for mirrors so it's more common than you'd be lead to believe...
    #7
  8. Peltsi

    Peltsi Been here awhile

    Joined:
    Jul 20, 2015
    Oddometer:
    149
    Location:
    Finland
    Yamaha is perverted like that too. At least I haven't found any other than those two.

    And in the older beemers , say R1150gs, the mirror bracket is quite stupid.
    It's quite difficult to find replacement mirros.
    #8
  9. b_rubenstein

    b_rubenstein Been here awhile

    Joined:
    Apr 4, 2018
    Oddometer:
    226
    Location:
    Melbourne, FL
    My Honda also has Left & Right hand threads on the mirrors.
    #9
    Callisto224 likes this.
  10. Dr. Greg

    Dr. Greg Tryin' to get home.. Supporter

    Joined:
    Nov 19, 2005
    Oddometer:
    1,835
    Location:
    ABQ, New Mexico
    IIRC both my '13 GS (sold) and my (current) '16 GSA have RH threads on both mirrors. My '10 MTS had different threads.

    --Doc
    #10
  11. jmb711

    jmb711 Adventurer

    Joined:
    May 2, 2019
    Oddometer:
    64
    Location:
    Northern Nevada
    I was just being tongue in cheek there..:D
    #11
  12. flei

    flei cycletherapist

    Joined:
    Apr 1, 2013
    Oddometer:
    10,614
    Location:
    Western Mass.
    They do it so that you break it when you try to adjust it and then they get to sell you a new mirror for $50. :hide
    #12
  13. Lead Wrist

    Lead Wrist Mehr Gelände Weniger Straße

    Joined:
    May 26, 2007
    Oddometer:
    6,939
    Location:
    Zer0-Zer0-Zer0-Zer0
    Bring-More-Wallet at its best, ain't it? :jack
    #13
    Peltsi likes this.
  14. Tallguy 1

    Tallguy 1 Adventurer

    Joined:
    Jun 9, 2020
    Oddometer:
    26
    Location:
    east sf bay area
    Call me OP. I'm just damn lucky I didn't strip out the front master cyl trying to unscrew that thing. Would not budge one bit even after soaking w/pentrant, tapping w/hammer and letting sit. Tried to go the "wrong" direction in an attempt to get any movement. When it snapped loose, at first I figured it broke. American bikes, Japanese bikes, I've never seen that before. Tallguy 1
    #14