The records are not complete, but with one exception there is no indication of any chronic or even occasional crankshaft failure.
The crankshaft was a continuation of their basic design of rather light construction, particularly in the webs.
It consisted of a very slim quarter-moon outline fastened to a disc on the crankshaft by a single bearing bolt through its middle which served as the pivot about which it moved.
The crankcase was drilled to provide forced-feed lubrication to the connecting rod big end and crankshaft main bearings.
In February 1906 Orville Wright wrote that all the parts of the engine were still in existence except the crankcase; but shortly after this the crankshaft and flywheel were loaned for exhibition purposes and were never recovered.
The crankshaft was made from a solid block of relatively high carbon steel which, aside from its bulk and the major amount of machining required, presented no special problems.
The camshaft for the exhaust valves (101, Figure 6), was chain driven from the crankshaft and was carried along the bottom of the crankcase in three babbit-lined bearings in bearing boxes or lugs cast integral with the case.
The cylinder assembly was made somewhat more complicated by their desire to oil the piston and cylinder by means of holes near the crankshaft end in what was, with the engine in the horizontal position, the upper side of the cylinder barrel.
The crankcase was considerably changed from that of the vertical 4, and was now in two pieces, with the split on the crankshaft center line.
In fact, had they split the crankcase at the crankshaft center line and operated the inlet valves mechanically, they would have had what could be termed a truly modern design.
The starter would shift the running cam out of position allowing the crankshaft cam to take over.
Crankshaft with automatic-timing retarding device on rear end of pivoted- and spring-mounted counterweights.
Rear crankcase cover and gear train: crankshaft gear drives B, which drives oil pump at F.
Power of this explosion is passed to crankshaftin conventional manner.
The method of protecting the crankshaft took full advantage of this fact.
Crankshaft: Since this engine developed the high maximum cylinder pressure of 1500 psi, it was necessary to protect the crankshaft from the resulting heavy stresses.
Without such protection the crankshaft would be too large and heavy for practical aeronautical applications.
The method used for speeding up the injection pumps was accomplished by utilizing a crankshaft cam during the cranking period.
It is the opinion of many that hair-line seams do not in any way affect the endurance of a crankshaft in service, provided they are parallel to the grain of the steel and do not occur on a fillet.
All straightening operations on the Liberty crankshaft which were performed below a temperature of 500°F.
There has never been a failure of a Liberty crankshaft which could in any way be traced to hair-line seams.
The presence of tool marks or under cuts must be completely eliminated from an aviation engine crankshaft to secure proper service.
This means that in case a crankshaft does not show hair-line seams on the ground surface this is no indication that it is free from such a defect.
The single horizontal steam cylinder, projecting partly into the end of the boiler, operated a crankshaft fitted with a large-diameter flywheel.
The driving wheels were coupled to the crankshaftby gearing.
Joe banged and pried at one of the bearings, still clinging to the crankshaft after the cap had been removed.
This is the stroke that turns the crankshaft one-half of a revolution and gives it force enough to carry it around until the next power stroke takes place.
The stationary crankshaft is hollow, and through it the gasoline vapour passes from the carbureter at the rear to the cylinders.
Inside were a number of perfectly smooth, circular disks mounted upon one central shaft--the shaft that extends through the machine, and corresponds to the crankshaft of an ordinary engine.
In this rotary motor the cylinders and crankcase revolve about the crankshaft which is stationary.
All of these water-cooled engines and several standard air-cooled makes are of the reciprocating type that have stationary cylinders and crankcase while the crankshaft rotates like that of the motor boat.
The crankshaft F passes through the crank case, the latter having suitable bearings G for taking care of the wear.
Four-cycle engines have two such complete movements at each impulse, or require four half turns of the crankshaftto complete the cycle.
At the forward end of the crankshaft there is mounted a master bevel gear on six splines; this bevel floats on the splines against a ball thrust bearing, and, in turn, the thrust is taken by the crank case cover.
Water cooling was adopted, and the engine was, like the Darracq four-cylinder type, so arranged as to give two impulses per revolution at equal angular intervals of crankshaft rotation.
The crank case was a circular aluminium casting, the engine being attached to the fuselage of the aeroplane by a circular flange situated at the back of the case; propeller shaft and crankshaft were integral.
Connecting rods and crankshaft are of steel, the latter being machined from a solid steel forging and carried in five roller bearings and one plain bearing at the forward end.
The cam shaft is carried in a special bronze casing, seated on the immediate top of the cylinders, and a vertical shaft is interposed between crankshaft and camshaft, the latter being driven by bevel gearing.
Cast-iron pistons are used, and are connected to the crankshaft in the same manner as with the Gnome and Le Rhone engines.
With an engine having such a number of cylinders a very uniform rotation of the crankshaft is obtained, and in actual running there are always five of the cylinders giving impulses to the crankshaft at the same time.
The crankshaftis of chrome nickel steel, carried on seven bearings.
A little crank must be cut from 1/16-inch brass, and soldered to the crankshaft after fitting a wire crank-pin to the outer edge.
The connecting-rod E is connected to the crankshaft and in this way the engine is caused to revolve.
The shaft is made to run freely in thecrankshaft bearing that was previously soldered in place.
This crank is mounted on a crankshaft carried on the metal tube M.
If it does come to rest at "dead center," where no air can enter the piston, the crankshaft should be given a little twist and the engine will then start.
The plate is mounted at an angle to the tube, so that when it is in place on the stern of the boat the propeller-shaft will be in line with the crankshaft of the engine.
A lathe having special equipment for rough-turning gas engine crankshaft pins is shown in Fig.
The crankshaft is delivered to the machine with the line bearings rough-turned and it is clamped by the hinged clamp previously referred to and centered by the V-shaped driver.
The method of turning a crankshaft is as follows: A round-nosed turning tool is first fed into a cross stop as illustrated in the plan view at A, which gives the proper diameter.
If the crankshaft has straight webs which must be finished, two tools seen at b are used for facing the webs to the correct width.
Turning an Engine Crank-pin in an Ordinary Lathe] =Turning a Crankshaft in a Lathe.
Diagrams showing Arrangements of Tools on LeBlond Lathe] =Operation of Special Crankshaft Lathe.
The crankshaft in the Gnome motor had been hollowed out to form a tube or pipe, through which the fuel or carbureted air passed to the cylinder by means of a valve in the head of the piston which worked automatically.
In the Gnome motor the cylinders revolved and the crankshaft was stationary.
Instead of having the piston and the crankshaft move, it was the cylinder itself which moved in the Gnome motor, while the crankshaft and piston were stationary.
Charles reversed the engine so that the flywheel was to the front, rather than to the rear as in the Benz patent, but made use of Benz' vertical crankshaft so that the flywheel rotated in a horizontal plane.
As the crankshaft of this engine was retained in constructing the present engine, it is logical to assume that the bearings were the same also.
This consisted of a large drum, perhaps 12 inches in diameter, equal in length to the diameter of the flywheel and keyed to a shaft directly under the center of the crankshaft and parallel to the axles.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "crankshaft" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: accelerator; auto; automobile; engine; generator; muffler; parts
