Uncoupling Unit for European Loop-Hook Wagon Couplers
I wanted to uncouple my wagons at various locations in my rail yard so I decided to built my own uncoupling units, and dug into my box of "odds & sods" for materials.
PECO Magnetic or similar device, mounting plate - sturdy piece of styrene 25mm x 60mm, Shaft Sleeve - 6mm plastic tub (length to be determined), uncoupler shaft - 3mm (length to be determined), wooden block - 25mm x 60mm x 40mm, angle bracket. Feel free to use substitutes.
Depending on which PECO Magnetic Turnout Unit (MTU) you are using: Remove the shaft on one side and center mounting brackets (see photo below), attach wires that will activate the unit (one way)
Drill two holes into the mounting plate suitable for a couple of screws top / bottom center. Then drill four holes for the MTU. Make them a bit smaller then the tabs on the remaining top / bottom brackets (1.5mm bit). Attach the MTU as shown below.
Drill a hole through the uncoupling shaft a bit bigger than the MTU shaft. Attach the un-coupling plate to one end. I used a piece of plastic with wood engraved on it and cut a piece 10mm (W) x 20mm (L) x 2mm (thick) and beveled the ends to a point. This way you can disguise it as a walkway across the track.
Determine where you want the un-coupler unit and drill a hole between the ties for the sleeve. Attached your un-coupling unit below the hole. Cut the plastic uncoupling shaft sleeve so the top is flush with the top of the track tie and the bottom of the base your track is attached to. Drop the un-coupling shaft through the sleeve. Drill a hole through the shaft and slip it onto the MTU shaft. Leave 10mm below that shaft.
I found the once activated the MTU sometimes got stuck in the up position. Ensure the sleeve and shaft are un-obstructed and /or you can attach some weight to the bottom 10mm of the un-coupler shaft. It doesn't take much to make it drop.
When completed it should look like this: