Charger 3 Arriving

[McCorby]

Somebody yesterday or day before reported Magura brake problems they had from having the bike upside down for a while. Anybody ever heard of such a thing? His claim was air bubbles from the brake reservoirs traveled up the tubes and could cause brake failure. ???

This is only an issue if there’s air in the system to begin with or there’s a leak. If the system is properly bled there will be no air in the system and storing the bike upside down will be no problem at all.

Edit: I posted this not too long ago in another thread.

This is from roadbikerider.com

I spoke with John Krawczyk, a product manager at Park who knows his stuff and has helped me out many times over the years. He gave me a two-part answer to Bill’s question.

Bicycle Hydraulic Brakes Are Sealed​

First, John told me that it’s perfectly fine to hang disc brake bikes any way you want, because bicycle hydraulic brakes use sealed systems. Since they’re sealed, the brake fluid can’t get out and the air can’t get in. So hanging the bike won’t harm the brakes in any way.

Second, he explained that since Bill is having an issue with his brakes when he hangs the bike, it has to be because the system isn’t sealed anymore. This could happen if a piston had gotten stuck allowing air to get in behind it. Or, if somehow a pinhole had developed in a brake hose somewhere on the bike.

In that scenario, the brake could operate adequately when riding but it would be losing a small amount of fluid and simultaneously taking in a little air. Then, when the bike is hung upside down, the air could find its way to the high point and escape. That could result in the feeling Bill experienced having no brakes when he takes the bike down and checks it.