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Scissor Lift Bike

Pedal to go forward, or raise yourself up.
  (+7)
(+7)
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The bike appears normal enough in compact mode, but as the rider pedals along, they twist a control that imparts some of the pedal motion into a cranking mechanism that expands the scissor lift body of the bike and raises the rider.

This would allow the rider to relatively safely ride an 8 to 10 foot high bike because he wouldn't need to perch precariously on the very tall bike while starting to pedal and keeping it from falling over. He merely gets up to speed and raises the bike as he goes.

Getting off is easy as well since he just lowers the bike while it's moving and stable and stops and dismounts as he would with a regular bike.

doctorremulac3, Jan 12 2017

Personal Potential Cycling Counterweight Personal_20Potentia...ing_20Counterweight
[not_morrison_rm, Jan 14 2017]

[link]






       I think this should be automatic. Then when you slow down you will automatically come back down.   

       Also, given the choice, some people might opt to keep the seat low while traveling at speed and still think they were cool. We can't have that.
bungston, Jan 12 2017
  

       This may be one of the most awesome ideas I have encountered today, and it's been quite a busy day here at MaxCo.
MaxwellBuchanan, Jan 12 2017
  

       I think this is a good idea, except the opposite. Have the rider standing up more, the slower they're going. Of course I also think it should be a tricycle, enclosed and powered.
FlyingToaster, Jan 12 2017
  

       Double bun if you add fat-bike tires so it's ready to plow through snowbanks, hoisting the rider high above the action!   

       <Sgt heads to the shed to start tinkering...>
Sgt Teacup, Jan 12 2017
  

       By the way, I was asked how the chain would expand, you would have 3 or 4 sections that just pivoted along with the scissor sections. Probably needs a a drawing.   

       Just picture each of the scissor sections having a hub at each end with a chain wrapped around them.
doctorremulac3, Jan 12 2017
  

       Of course a simpler version would just have the wheels on two extendable / collapsible telescoping tubes.   

       The scissor thing is cooler though.
doctorremulac3, Jan 12 2017
  

       Wouldn't there be more front on drag surface?   

       So safer but tired.
wjt, Jan 13 2017
  

       //So safer but tired.//   

       Yeah it would make sense for the bike to transform from upright to a recumbent style as speed increases. Go speed racer !
bigsleep, Jan 13 2017
  

       Whilst looking for my own facile contributions, I found Jinbish's take on this, circa May 15 2009...link
not_morrison_rm, Jan 14 2017
  

       Great idea. When riding up hills, one could use the stored kinetic energy to assist with the pedalling. When the road levels out, re-extend the scissor mechanism to maximum height.
AusCan531, Jan 14 2017
  

       //Also, you would probably need to raise the whole bike frame rather than just the saddle   

       Last thought....bit tricky engineering-wise, but a bike with an expansible front wheel...so riding on the street it's standard bike config, braking expands the front wheel to penny-farthing mode, so elevating the rider....
not_morrison_rm, Jan 14 2017
  

       Not too hard, have sliding concentric rim sections, and telescopic spokes and forks?
pocmloc, Jan 14 2017
  

       Sci-sor is a lessor known ancient penny-farthing autobot with arch enemy, the decepticon Tramatron.
wjt, Jan 14 2017
  
      
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