Prams of the big, old-fashioned kind had overlapping wheels. Why? Overlapping wheels can be larger in diameter for the same length of chassis. Larger wheels have less rolling resistance, meaning that they need less energy to roll over the same
PC users! Join epic battles on World of Tanks – the free online tank warfare game. Click here, use the invite code THETANKMUSEUM3 to create an account, and you will receive a free premium tank to get you started. Best of all you’ll be helping The Tank Museum too – enjoy!