MovieChat Forums > The Crowd Roars (1932) Discussion > what's the deal with the hand-pumps?

what's the deal with the hand-pumps?


some kind of fuel pressure / oil pressure maintenance?

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Fuel pumps. I have no idea why they hadn't devised the mechanical pump at the time. I suppose all cars were gravity-fed in that era and a hand pump was the initial solution to getting fuel out of the tank for a racing car where centrifugal force interfered with that flow.. I think they were really just pressurizing the fuel tank with an air pump.

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