fitting the steel rim on horse cart wheel info in simple words
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Answers
as metal expands on heating. we should firstly heat the steel rim which has to be fitted. after heating it expands then we should fit it around the wheel and keep it undisturbed. after when the rim cools down it again contracts and it is fitted.
The wooden wheel of a horse cart is fitted with a steel rim to make it strong and smooth. To ensure a tight fit of steel rim over the wooden wheel, the rim is made slightly smaller in diameter than the wooden wheel. Then to fit the rim, it is first heated uniformly along its circumference till its diameter becomes slightly more than that of the wooden wheel. The rim is then slipped over the wooden wheel before allowing to cool. On cooling, the rim contracts and makes a tight fit over the wooden wheel .