Originally Posted by mister p
Some have a reverse lockout that needs to be manually activated.
Which as wel las being a nuisance can also prove interesting 50 miles later down the motorway when you realise two things simultaneously as the car in front E-stops:
1) you forgot to de- activate it.
2) you should be wearing brown trousers......
Auto reversing brakes - PITA to set up, but genius when working properly!
As an aside - because the trailer brakes are essentially "overrun" brakes you will only ever get something like 80% of "full braking" on the trailer, because as soon as the brakes come on the drawbar extends again & they release, by which pioint the car has slowed down a bit more so they come on again...<repeat> That's why they have dampers in the drawbar - it reduces the surging.