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Human Powered Vehicle recumbent tricycle HPV Theory

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Uploaded by on Mar 11, 2009

theory STAR TRIKE H.P.V. theory of operation...
Rear Wheel steering 7 part linkage with iner & outer forks with toe-out giveing balanced ride & suspension.
2x front Wheel Ratchet inline Drive with 25 speed forward gears. and rollunder Reverseing & parking mini wheels.
in 1998 I setout to Design the ultimate bicycle but end,d up with a tricycle. Design .

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Uploader Comments (JONOVID)

  • proof of design or Fail ?

    setup two stationary test rigs. one with a bicycle crank. other ( this design.)

    use kinetic push/pull sensors ( on the pedals. face plates ) need to be wireless unit.s.with a output third sensor on a flywheel for the output. & log data .

    both the bicycle crank test & the Linear Pedal test need the same Gear setting to a flywheel.-also flywheel Friction loading must = same. rider in Recumbent position in both test's.-test springs loading for best output.

  • to transfer of linear human power to a rotating member ( tricycle Wheel hub's )

    Dual reciprocating one-way clutchs ( one pr foot & pr side )

    rewind ( spring ) losses Vs Other leg/foot ( Lifting ) losses in a bicycle crank.

    dynamic kinetic losses equal to Rowing a boat ? is a Oar's kinetic mass more then a leg & foot ?. Note-in my design both pedals swing independently of the other. return speed can be higher then power stroke.

    "a good school project" -test as Engineering project.

  • proof of design or Fail ?

    -Total Width: 660 mm .. ( 860 mm -with the mirrors swing out ) .

    -Wheel Track with camber: 620 mm -fit throw a standard doorway.

    -Total Length: 2200 mm .

    -Max Height: 1000 mm -top of rollbar.

    -Lowest Point: 80 mm -Bottom of Seat to ground.

    -Turning Circle: 3m radius 7 part complicated geometry.

    -recommended body /seat material: carbon fiber.

    non-loaded nose/trunk material: fiber glass.

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All Comments (6)

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  • great concept, not sure on rear steer could be unstable. im working on a rear drive front steer but with the lever style pedal set up as aiming for a lower front profile as yours

  • Just so you know..I built it already. It does work but the ratchets need help. Had the idea for years now but finaly had to build. Glad to see Im not totaly alone in thinking this...cheers!

  • Hmm... if I am seeing this design correctly, you are suggesting two front wheels that are powered by the pedals, and the rear single wheel is steering? that is reversed from most "tadpole" trike configurations. usually rear wheel is power and two front wheels are steering. Rear wheel steering on a tadpole trike could be a problem. You will get sever handling problems at high speeds if you ever build this. Not sure if rear steering is an option. Front wheel drive is not a problem though.

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