I could not resist and bought a Car Works Forney. But this beautiful model does not perform well. Stoner Creek Miniatures sells a remotoring kit for the Car Works Forney (Sandy River & Rangeley Lakes #5). It is not cheap (about $130 incl. shipment), but it is worth the money. It consists of a coreless micromotor with gear head (Faulhaber, swiss made) and flywheel. They suggest to glue (epoxy) the motor to the frame. For my opinion it is better to use a double-coated foam tape e.g. from Scotch (mine is about 1.5 mm thick). It is more flexible and easier to adjust or remove. The also delivered rubber tube for the driveline did not fit the gearbox, and it is to long anyway. That's why I used a NWSL u-joint 483-6.

The power pickup should be improved as well. I built an additional power pick up with bronze wires à la Backwoods Miniatures. The pickup on the left side has to be isolated from the chassis. I solved this with a thin (0.2 mm) bronze sheet metal (4 x 2.5 mm). I glued (5 min. epoxy) a paper shim between chassis and the sheet metal for isolating. You have to solder to the wire before glueing the paper.