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Thread: What is this doohickey? (Adventure Top Case)

  1. #1
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    What is this doohickey? (Adventure Top Case)

    My buddy and I were comparing our new R1200GS's the other day and noticed that my BMW Adventure top case has a plastic doohickey bolted on next to the latch that his doesn't have. It doesn't appear to have any function, but it's obviously well designed and bolted onto the case. Can anyone shed light on what this is for? It's circled in red in the picture below.
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    Ken
    "Striving to be less wrong than yesterday."

  2. #2
    Back in the Saddle mcmxcivrs's Avatar
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    It's an air vent to prevent the lid from getting stuck shut by lower pressure inside the case.

    I've had it happen on my side cases (which do not have the vents), though it was not so severe as to prevent me from opening the lids. I have however had water get sucked in past the lid seal when I've encountered a sudden cold rain shower that caused the air in the relativly empty case to contract creating a vacuum inside. I've considered fitting the vents to avoid having it happen again.
    Ed Miller, Calgary, AB
    2008 K1200GT, 2009 F800GS
    I can't wait to retire and have a fixed income. The one I have now is always broke.

  3. #3
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    Quote Originally Posted by MCMXCIVRS View Post
    It's an air vent to prevent the lid from getting stuck shut by lower pressure inside the case.
    I see. That makes total sense. I'm glad to know the adventure luggage is that water tight. I haven't tested it in hard rain yet.
    Ken
    "Striving to be less wrong than yesterday."

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    secret airvent?

    It's the government wanting to know where you are at all times!

  5. #5
    Novice Adventurer Newstar's Avatar
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    Spy hole....so the little alien can see who's out there.

  6. #6
    Rally Rat
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    Back up camera.....oh wait. We don't have reverse. Nevermind!

  7. #7
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    Which Gubmint?

    Quote Originally Posted by 94aero View Post
    It's the government wanting to know where you are at all times!
    Would that be the German government?
    Ken
    "Striving to be less wrong than yesterday."

  8. #8
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    Riding at altitude,(in mountains) can make the cases very hard to open.
    I'd keep that vent closed in the rain!! (unless You're riding at high altitudes..)

  9. #9
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    Quote Originally Posted by cmannie View Post
    Riding at altitude,(in mountains) can make the cases very hard to open.
    I'd keep that vent closed in the rain!! (unless You're riding at high altitudes..)
    These vents on my cases don't seem to open or close. In fact, just by looking at them it's impossible to tell where the air flows in/out. So I'm guessing they're designed to prevent water from coming in.
    Ken
    "Striving to be less wrong than yesterday."

  10. #10
    Registered User TOMRUNNING's Avatar
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    Vents

    I had a problem with BMW cases on my GSA collecting moisture after riding in a hard rain. My dealer said he would install those little vents. I thought he was crazy. Presto, no more moisture in the cases. Rode in a lot of hard rain yesterday and my cases stayed dry. They also eliminate the sealed case in higher elevations mentioned earlier.
    Tom Running, 51141 Greenville, WI
    "Love is when you like something as much as your motorcylce." Sonny Barger in Hells Angels
    by Hunter S. Thompson 1966

  11. #11
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    The tight seal on altitude or temp changes also happens on the 1200 R/RT plastic luggage.
    First time it happened to me I thought something had broken in latch linkage but it was just "vacuum sealed". Don't get anything in the RT cases when it happens, though, and AFAIK no vent has been introduced for them. The stock cases are good stuff though various arguments can be made for the best of the aftermarket stuff for the GS.

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