Some trailers and caravans are very long and therefore incur more voltage drop than usual. Measure the voltage drop from the battery to the last electric magnet.
In our opinion, bearing buddies can cause grease contamination of brake shoes when overfilled. Couplemate has concluded that bearing buddies are unsafe to be used in conjunction with drums brakes and should be immediately replaced with conventional or grommeted grease caps.
Caravans and some heavier campers are continuing to experience braking problems in mountainous regions. Overheating drums are a major concern for owners as they strive to improve their braking.
“I have no idea what PCD is nor do I know how to calculate it?”….is an answer we hear frequently from customers. Technically, Pitch Circle Diameter (PCD) is the diameter of the circle which passes through the centre of the wheel studs, wheel bolts or wheel rim holes.
Here is a simple test for your electric drums to test to prove polarisation. Point your trailer coupling facing north or south. Residual magnetism can be excess positive ions(North Pole) or excess negative ions (South Pole).
Learn how dirt roads destroy Electric Brakes. Unsuspecting caravan owners discover their electric braking systems and electric drums are being rendered defective by vibrations transferred to braking systems by corrugated roads.