Star InactiveStar InactiveStar InactiveStar InactiveStar Inactive

The following letter appeared in Mechanics Magazine Volume 21 p329 1834


"Then of the exterior I safely may say
There never was yet any carriage more gay;
While the round-tire wheels make it plainly appear,
That there's none ran so light as the smart Shillibeer

Sir,—The above extract from a doggrel advertisement of the celebrated omnibus-man, refers to an opinion, very prevalent of late among unscientific roadsters, that wheels with convex or semicircular tires run lighter than those equipped with tires of the usual flat cylindrical form.
If our roads were infinitely smooth and hard, no doubt wheels of the form in question would run very light ; but in the present state of roads—good as they now are—it must be evident to all who carefully consider the matter, that cylindrical faced wheels are best.
The round-tire wheels cut into the road much deeper than flat ones, and have a greater hill constantly before them. The omnibus in question is not the only vehicle that is equipped in the manner stated ; several stage-coaches, and some of the mails, are furnished with round•tire wheels.
On looking at an Exeter mail the other day, I observed that one of the hind-wheels, with round tire, had been locked and dragged down a bill, which had ground the tire quite flat in that particular place, and this must always occur under like circumstances, from the small quantity of surface supporting the weight and exposed to the grinding action. By the use of a shoe, however, this could easily be guarded against, but there are many other objections not so soon obviated. .....
William Baddeley

Probably William Baddeley (c1806-1867)


Please publish modules in offcanvas position.