Show SlEEVE VAlVE MOTOR DESCRIBED IN IM DETAil tuch liuch has been written and said of the famous valve sleeve-valve m motors says Sales Saes a Edmunds ol of the B Browning Au Auto and ana s Supply ppl company compan local s t distributors f and especially T 81 ih f famous fa- fa moux tanks ute ure ie equipped with Knight sleeve valve motors have been playing such an an important part in the world war but the terms sleeve valve has been used in such a general way way and by so many people who do not know lenow even the reason why It is called a sleeve- sleeve valve motor that I believe a short technical technical technical tech tech- description would be bo read with Interest in interest interest in- in terest by the motoring public In In the first place continued Edmund Ed- Ed munds mund engineers will tell teU you that in any mechanism the simplest design Is invariably the most efficient The fewer the parts and the simpler the operation a the less chance there e Is for friction l t anti and d wear 1 Therein lies the advantage of the Knight Willys-Knight motor motor motor-it It is simple and aDd free from complications It has fewer parts than a valve motor and those parts are mechanically correct Engineers En En- glI never use springs and cams as asan asan asan an important J part part part-of of any mechanism except ex ox- as a a. last a resort e cep eai ai Noise e in any mechanism means Wear valve valve motors cannot permanently remain quiet because of or this wear while the Knight Willys-Knight with its lubricated sliding surfaces becomes even more moore quiet with use Unlike the valves of a valve motor motoi these sleeve valves sleeve valves do ao not work against strong springs and anti the pressure of gas in the cylinders nor do they hold compression And note The sleeves are not fitted tightly their surfaces are al alwa's always always al- al ways was covered with oil and their whole travel is but one Inch at half the speed of the tho one ninth motor one ninth of of e piston travel The friction resistance is negligible bl ble The Willys Knight m motor tor delivers I more power than a valve motor of equal size because bec the gas passages are large and direct the valves open and nd close dose with absolute mechanical precision pre pro cislon at all speeds the compressed gas gasis is all confined directly above the piston and the point of Ignition is 13 above the center of the piston Carbon which forms lorms so EO rapidly in it h a. a valve motor as to seriously affect affect af at- Its operation and therefore necessitates necessitates tates tales frequent cleaning is barely noticeable noticeable notice notice- able able jn ln In a sleeve valve sleeve motor even after two or three years of service service This Is due to the tie positive regulation of oil and complete combustion of gas as well as passage And it is almost a a. paradox that the tile sleeve valve sleeve valve motor which re requires requires requires re- re I quires so little cleaning should l be the most accessible for cleaning |