The miniature servo magnetic clutches from DAGU fit on your servo just like a standard servo horn.
Unlike a standard servo horn, these clutches will slip when excessive force is applied to prevent your servo gears from breaking.
Typical holding torque for the standard configuration is 850g/cm.
The drive plate fits onto the servo horn and holds 4 magnets. There are two drive plates provided in the kit. One has 8g and the other 9g molded on the side that faces the servo. The difference between the two is the size of the spline in the centre.
The mounting plate holds 4 magnets, comes in 3 different shapes and allows various devices to be mounted into de servo just like a normal servo horn. The glassine, low-friction disk sits between the two clutch plates and combined with the brass sleeve allows the clutch to drive smoothly almost without friction.
The 8 magnets are firmly press fitted into the clutch plates and depending on how you install them the clutch can be configured for 3 different modes of operation.
Hard Lock occurs when the magnets are attracted to each other. Once the magnets stick together they lock and resist being separated.
Soft Lock occurs when the magnets are repelling each other. This provides a soft spring action. Locking occurs when the repulsive force is at it's maximum.
The clutch "hard locks" in place every 180 degrees. When the clutch slips less than 180 degrees it will spring back into the locked position automatically and relocks. If the clutch is forced to slip more than 180 degrees then it will attempt to relock 180 degrees from the original position.
The clutch "hard locks" every 90 degrees. This mode works best with wheels where slippage is not normally desirable
The clutch "soft locks" every 90 degrees. Soft lock has a spring action and provides maximum protection for your servo gears. It is best suited for wheels travelling over rough terrain.