XPost: comp.os.linux.misc   
   From: nunojsilva@invalid.invalid   
      
   On 2025-12-08, rbowman wrote:   
      
   > On Sun, 7 Dec 2025 15:04:17 -0500, Paul wrote:   
   >   
   >> The carts where the battery is flat, they escape the corral and are   
   >> found lying about. It's important to change the battery on those,   
   >> because the brakes stop working when the battery is no good.   
   >   
   > Poor battery life might rule it out but they could be set up like the air   
   > brakes on big trucks. The brakes are normally applied when there is no air   
   > pressure. It saves chasing 53' trailers around the lot.   
      
   Heh, I'd expect the go-to example for that kind of fail-safe brake   
   operation not to be be trucks but rather trains :-)   
      
   > The downside is this time of year with slop from the roads and freezing   
   > temperatures they can freeze in the applied position and the air solenoid   
   > doesn't have the force to break them loose. Enter 5# hammer and much   
   > cursing.   
      
   --   
   Nuno Silva   
      
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