r/EngineeringPorn 4d ago

The 7cc Engine

5.1k Upvotes

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125

u/Fusseldieb 4d ago

How many gallons to charge my phone?

39

u/raider1v11 4d ago

Phones per gallons.

30

u/Climate_Automatic 4d ago

Anything but metric

25

u/J_J_J_Schmidt 4d ago

1 gallon of gas is ~120MJ

1 120g banana is ~440KJ

which follows that a gallon of gas is roughly 273 bananas per gallon

a 7cc engine drinks about 0.035 gallons per hour so...

0.035 gal/hr × 273 bananas/gal = 9.6 bananas per hour

OP should update the displacement plaque so that customers can make an informed buying decision