ThinkFun the Amazing Spring system !!

This ( amazing ) Spring part will make your car run on the power of .... Plastic .
No need for a rubber band .. no need to print with soft (expansive) filament.
Just print , connect and .. go Go GO o o o .

This Thingy will fit the entire ThinFun sets and parts .

Instructions:
1.print this spring.
2.connect to some car/track Thingy you built (using the ThinkFun Sets and parts)
3.pull your car/track back until the spring is loaded ..
4.let go and watch it go !
5.press "like" button :)

>>SO if you do Like this ( Amazing ) part , feel free to press that nice little heart button on top -
i'd appreciate that gesture.

Also - check out my other ThinkFun designs at :
http://www.thingiverse.com/kola_machina/designs
( you might "like" them too .. wink wink nudge nudge :)

P.S.
This spring may use for other Gizmos as well :
Shooting machins
Propeller/wing enhanced toys
Energy Efficient gizmos

If you have any other uses - feel free to add in the comment section - and