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Storing bike with hydraulic brakes

Old 11-30-23, 12:39 PM
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Storing bike with hydraulic brakes

I need to store a bike with Shimano GRX brakes. It's most convenient to hang it vertically by the rear wheel. Is this likely to mess up the brakes? I think I've read you shouldn't turn the bike upside down but otherwise I haven't a clue. Thanks.
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Old 11-30-23, 12:42 PM
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Don't over think it, store it how you like
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Old 11-30-23, 04:34 PM
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Originally Posted by shelbyfv
I need to store a bike with Shimano GRX brakes. It's most convenient to hang it vertically by the rear wheel. Is this likely to mess up the brakes? I think I've read you shouldn't turn the bike upside down but otherwise I haven't a clue. Thanks.
Some have reported the need to bleed hydraulic brakes after storing inverted due to air bubbles in the system.

This will vary greatly on manufacturer and model.
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Old 11-30-23, 05:24 PM
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There are no guarantees. Even brakes that should not leak might, though most won't.

Rather than worrying possibly needlessly, go ahead and hang the bike, putting a drop cloth below just in case. Then check on it from time to time letting the results guide you for the long term.
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Old 11-30-23, 05:29 PM
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Thanks all, it's hanging.
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Old 11-30-23, 05:40 PM
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Originally Posted by CrimsonEclipse
Some have reported the need to bleed hydraulic brakes after storing inverted due to air bubbles in the system.

This will vary greatly on manufacturer and model.
A hydraulic brake system should not have air bubbles in the system, and storage position should not cause new bubbles to form.
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Old 11-30-23, 07:00 PM
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The position of the bike during storage can definitely reveal that there is air in the system. But it won't cause air to be in the system.
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Old 11-30-23, 09:35 PM
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Yeah if you get air in the system it is likely already there or there is a problem which you will notice. Typically after hanging a while you might need to pump the brakes a bit but they should "spring" back just fine. We hang bikes by the front wheels all the time with disc brakes of varying styles to no issue and at my old shop we had some that could hang for months and be fine.
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Old 11-30-23, 10:50 PM
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Never had an issue hanging a bike with hydraulic disc by the wheels. As mentioned before several times, if your brakes are soft from hanging, there was air already in the system. Air will always graduate towards the highest point in the system. It's just more notable when a bike is hung.
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Old 12-01-23, 08:05 AM
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Originally Posted by Eric F
A hydraulic brake system should not have air bubbles in the system
You are correct....
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Old 12-01-23, 12:39 PM
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I found that after I transported a bike, wiith hydraulic brakes, on its side, I had to bleed the brakes to make it work right. No, it shouldn't have happened, but it did.
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