GT Side Cases - K-Bikes.com - Excellence in Motion
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post #1 of 18 (permalink) Old Aug 3rd, 2009, 5:48 pm Thread Starter
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GT Side Cases

During a recent trip which took me to Smokey Mountain National Park, and then the MOA Rally I ran into a problem with one of my side cases. After a hot sunny day I tried to open one of the side cases, and couldn't no matter how I tried. I thought the lock was still somehow engaged, but I managed to grab the sides of the cover, and pulling hard it opened with a woosh, as if a vacuum had been created inside the case holding it closed. It happened 3 or 4 times always after a ride on a hot sunny day. Once I opened it by pouring cold water on it. Later on I made sure it was over stuffed maintaining pressure on the cover even when it was closed. I was wondering if anyone else has experienced this or am I the only lucky one. Tuff camping off a bike, when you can't get at your stuff.

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post #2 of 18 (permalink) Old Aug 3rd, 2009, 6:11 pm
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I wish mine were that tight...
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post #3 of 18 (permalink) Old Aug 3rd, 2009, 7:52 pm
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I had the same thing happen. Then, after bitching about it to myself I realized I finally had a case that didn't leak. So I quickly apologized to the motorcycle gods and hope that I am not punished for my transgression.
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post #4 of 18 (permalink) Old Aug 3rd, 2009, 9:21 pm
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Yep. I've had that problem too and it happens when I open the case at altitude (say 4000'), ride home (500' altitude) and try to open the case. Eventually after busting your fingernails it will open with a woosh. My son has some Pelican cases on his F650GS and they come with a little valve to avoid this. I guess we could drill a leetle hole somewhere, but at least you know nothing is going to get wet or dusty inside if it seals that well.

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post #5 of 18 (permalink) Old Aug 4th, 2009, 12:47 am
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A little sandpaper on the rubber seal will probably take care of the problem -- it'll degrade the seal enough to let the pressure equalize. Since you have a choice, do it towards the rear where there's less spray and no possibility of standing water getting sucked into the case.

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post #6 of 18 (permalink) Old Aug 4th, 2009, 4:28 am
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What about a trace wiping of silicone to keep the gasket mating areas compliant (or some talcum powder), to help facilitate opening

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post #7 of 18 (permalink) Old Aug 4th, 2009, 7:15 am Thread Starter
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Quote:
Originally Posted by Semper_Fi
What about a trace wiping of silicone to keep the gasket mating areas compliant (or some talcum powder), to help facilitate opening
I was going to use grease around the gasket, but one of my buds suggested that would make it worse, so I did the talcum powder, with a small brush lets see what happens.

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post #8 of 18 (permalink) Old Aug 4th, 2009, 9:07 pm
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Same thing happened to me on a trip in the mountains last year. I stupidly applied silicone grease, and yes, you guessed it, it made it worse. It does it at altitude and it does it when it gets hot.

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post #9 of 18 (permalink) Old Aug 4th, 2009, 10:46 pm
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Common problem here in Colorado, where we go from 5,000' to 14,000' and back in a day. You could drill a very small hole somewhere that water has a hard time working into...maybe inside where the bags mount to the bike. Doesn't take a very big hole for the air pressure to equilibrate as you go up and down.

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post #10 of 18 (permalink) Old Aug 4th, 2009, 10:58 pm
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I took one of my bags apart to fix the latch. On the inside liner it doesn't go out the back, there is a gap between the liner and the back . If you drilled a small hole in the liner only , the latches are not air tight. I had the lid not open one time and thought it was the latch, then the next day it opened. I'm glad you posted this, it explains my problem.

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