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             Some relay / switch configurations to
                          operate your motors.
                  Plus some other interesting finds :-

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                          Just two simple switches!

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                              Again just two relays

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                   Steering with only 4 relays or starter motor solenoids

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                        Mechanical P.W.M. !!!
                Speed Controller with Unlimited
                                   Amps!

                      A RECONSTRUCTION OF THE ORIGINAL  ... now defunct .... ROTRAKTOR WEBPAGE
                                   HERE

                           You will have to go to the link before you can make
                                          sense of the following Diagram.


                                                Found the original webpage! ......it's moved with it's owner HERE

                          This is my version of the mechanical P.W.M. device ,
                          slightly more complex but will give forward and reverse
                          without the addition of relays.

                         The gray area in the pic is the conductor .
                         and the top ( green ) brushes move as a pair. The other
                         brushes are static.

                                 

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                        Here's how Onslaught's Armature
                          
was controlled

                     The darker parts are brass ,and Tufnol
                                is spaced in between

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