|This motor is maximised for powerSimilar to Meccano E15R & E20R motors but runs slower with much more power. A modern powerful 12v dc motor is "sandwiched" between two sideplates. With on-off/revesing switch which can be remotely operated with an adaptor (supplied). The drive from the motor is transmitted through 90 deg via a worm and pinion giving a 25:1 reduction ratio. In this configuration the final drive is reduced but very powerful. This final drive output is then at right angles out of both side plates. This shaft can be substituted with a longer one. Side plates 127mm x 63mm (10x5 holes), width 43mm.