MOTORS

Hawera Star, Volume XLV, 30 June 1925, Page 4

MOTORS

FARMERS’ CO-OP.

As is its usual custom the I armers Co-op., distributors for the well-known and popular Hupruobile cars, has a verv 'fine display. The four-cylinder model is so well known in this district that there is no need to expatiate at

great length on its many fine qualities, but the makers of ibis car have exceeded •themselves with a new design i n the HXJPMOBILE EIGHT: This is a new eight-cylinder car which has new features, some of which are here mentioned. It has the shortest, most compact eight-in-linc-engine overbuilt, and its performance is so smooth and symmetrical that there is not even •a murmur of roughness' anywhere in the engine’s entire power and speed range. To demonstrate this fact and show the perfect balance and vibrationless running, a half-crown piece will life placed on the engine, and will remain there while the engine is raced up to a very high speed. The Hupmobile eight-cylinder engine—2& inch bore by 4f inch stroke—is of the Lhend type, having intake and exhaust valves on the same side. The compression is 91 pounds gauge pressure to the square inch at 1000 revolutions per minute. The torque power ,of the

Hupmobile motor is such, that' the point of maximum . power is sustained over a wide range of motor • speeds wtihoub loss. The cylinders are cast in block, of special chrome nickel cylinder iron, and the crank case is of aluminium throughout, both castings possessing noticeablo symmetry and rigidity. The cylinder’head is detachable, giving easy access to combustion. chamber and valves. The crank shaft is drilled to provide high pressure lubrication to ail bearings. This costly method of drilling eliminates the use of outside tubes "for oil distribution ; crank pin sections are bored out to provide oil reservoirs totalling three-quarters' pint for entire engine; also reducing crankshaft weight at throws without affecting strength. The cylinder block is a separate casting (all eight cylinders in one block) made of chrome nickel cylinder iron, an expensive material, • which reduces porosity, minimises warping and provides maximum

toiigluiess, consistent with accurate machining. The actual horse-power developed at 2700 revs, per minute is in excess of 60 horse-power, the full force of which is transmitted through chassis units towards driving the car with minimum friction loss. Other motors of different design and larger dimensions often actually .develop less horse-power, and then deliver a much smaller juoportion to, the rear wheels through friction losses,. _ due to faulty engine and chassis design. The cooling' system of this wonderful car is a very special feature, and the simplicity and efficiency of it is strikingly demonstrated by the fact that it requires a minimum number of parts and connections in its operation, while securing a cooling efficiency unobtainable in other, type engines. The thermostat consists of ; a valve connected to a syphon regulator. While the engine is cold and up. until . the time the cylinder water • temperature reaches 130 .degrees F; the;. valve is

entirely ' closed, 1 in which- ease the water is shut off from the main outlet, and is circulated ■ back through the cylinder block: by/.a bypass' tube. As engine heat increases the valve slowly rises.to its fully opened position, shutting off th© .bypass ’and allowing the water to take its ordinary course. The lockhead hydraulic brakes offer the maximum in braking efficiency and equalisation, with the minimum of moving parts and the entire absence of rattle and complication. They are ever equalised, are inherently .balanced in their braking power under any and every road condition and at all angles of steering, and remain so without adjustment. except, for natural wear of brake lining. This car is well worthy of’inspection, and will’ surely: draw a ; large crowd of interested .visitors.' This firm is. also exhibiting the England Standard car, which-is well worth . inspection. It J is .fitted ’ with semi-.olcised hood, and has- beautiful real leather upluvlstory. It is.ah ideal car. for f'e lady'.driver. ■ ; f Another feature- o.f this- stand is that of' International trucks/‘.which are so

well known throughout Taranaki foi hard work and good service. , A McCorin ick-Deering tractor is also on view hero, and a. salesman will _bo available at any time to explain its many advantages to those interested in tractors.