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    Red Bull soapbox racing.

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    • Mike AmosM Offline
      Mike Amos
      last edited by

      Did not like the rear of the chassis, changed with a rotated frame rather than curviloft.


      3.jpg

      Absentia mortis praesentiam vitae probat, vita autem est argumentum constantiae.

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      • DanielD Offline
        Daniel
        last edited by

        Great looking racer, Mike. But I wonder if the pocket around the red cone will create too much wind resistance, especially at high speeds.

        My avatar is an anachronism.

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        • Mike AmosM Offline
          Mike Amos
          last edited by

          Thanks Daniel, I am thinking of having slots on the side of the nose to allow that air out. I may just omit the whole thing though. For the challenge the subject must be interesting first and efficient last.

          Absentia mortis praesentiam vitae probat, vita autem est argumentum constantiae.

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          • HornOxxH Offline
            HornOxx
            last edited by

            Hi Mike
            just a thought - could a three wheel concept be a suitable variant for your jet-design?


            seifenkiste 02.jpg

            never trust a skinny cook

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            • Mike AmosM Offline
              Mike Amos
              last edited by

              Interesting but no, those things are terribly unstable and I have yet to see one get past the second obstacle. If you are going to do anything with three wheels, the single wheel should be at the rear of the vehicle for stability purposes.

              Absentia mortis praesentiam vitae probat, vita autem est argumentum constantiae.

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              • RichardR Offline
                Richard
                last edited by

                Nice mike, you'd want to be willing to spend some money on the cockpit cover! I see $$$$!

                I love the idea of billycart racing, would love to see it more than just a silly free for all but a proper downhill challenge like downhill MTB!

                [BUILTBRAND.COM.AU](http://builtbrand.com.au/)

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                • Mike AmosM Offline
                  Mike Amos
                  last edited by

                  Thanks, agreed on both those points Richard, the screen would probably be cut down for headroom as much as anything. The widest part of the cockpit is just over 18 inches at the elbows so a taller person might have problems fitting.

                  Absentia mortis praesentiam vitae probat, vita autem est argumentum constantiae.

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                  • Bryan KB Offline
                    Bryan K
                    last edited by

                    Both of those look cool and fun!

                    See my portfolio at https://delphiscousin.blogspot.com/

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                    • Mike AmosM Offline
                      Mike Amos
                      last edited by

                      Ta muchly, HO's looks good I agree, cheaper to make too.

                      Absentia mortis praesentiam vitae probat, vita autem est argumentum constantiae.

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                      • olisheaO Offline
                        olishea
                        last edited by

                        great stuff!

                        Could I suggest lowering the centre of gravity by increasing the height of wheel axles? Or add a bend in the axle so the craft sits lower against the floor.

                        oli

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                        • Mike AmosM Offline
                          Mike Amos
                          last edited by

                          Good suggestion and I am working on it, also the suspension, braking and steering system. In fact first draft is in. I can not go too low as some of the suspension characteristics rely on a bit of vertical movement. It might hurt if it goes too low.


                          6.jpg

                          Absentia mortis praesentiam vitae probat, vita autem est argumentum constantiae.

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                          • Mike AmosM Offline
                            Mike Amos
                            last edited by

                            I dropped the shell by 1.75 inches and the suspension attachment bars by 3 inches which will allow the body to achieve the lower centre of gravity mentioned above. Some of the frame is in as are the disc brakes which will come from a street bike. The actual suspension hydraulic units will also come from a street bike but are not attached yet.


                            10.jpg

                            Absentia mortis praesentiam vitae probat, vita autem est argumentum constantiae.

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