Piston engine Racing version V4.1 Hit And Miss

Z :Gas
C:brake
F:electric starter
Sometimes it bugs and stop working then just reload the level

I know looks so horrible but i had no time for desing and also the more weight=less velocity

NOW WITH MORE RIGID SUSPENSION,MORE DENSE PISTON AND LESS WEIGHT
This version has less torque but more speed

UPDATE 1: POWERFUL SUPERCHARGER , TOP SPEED AUMENTED.
UPDATE 2: I DISCOVERED THAT MORE NEAR IS SUPERCHARGER, MORE THE MINES WILL GO FAST
Update3.1:little improvements
Update 4.0: discovered that 0.20 is the best density for piston, increased RPM and Max Speed and also now the engine is BUG FREE
And also now the supercharger is automatic.
4.1: Converted to a hit and miss engine so you can go at the speed you want.

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SUPER SPEEEEEEEEEEEEED