National Geographic : 1920 Mar
Is carbon choking your motor? Do you have to shift to "second" on hills and retard your spark to stop "carbon knocks"? CARBON deposit is a natural result of what goes on inside the gasoline motor. Excessive carbon is caused chiefly by four things: 1-A too-rich carburetor mixture 2-Backpressure, due to clogged muffler 3-Unsuitable, inferior oil 4-Worn or broken piston rings Carbon clogs your cylinders, overheats your motor, causing "carbon knocks", fouls spark plugs, gums up piston rings and pits exhaust valves, causing leaky compression. You can help prevent carbon forming by always getting that 13 parts air to 1 part gasoline mixture. Here's how With the motor warmed up and idling, open the G-Piel Muffler Cut-Out and turn down the adjusting screw until you hear the motor begin to slow down. Then turn the other way very slowly until you again hear the maximum speed. On the other hand, the trouble you are experiencing may be caused by a caked, clogged muffler. To find out about your muffler, simply test the motor with the muffler and without it. There is nothing like a G-Piel Cut-Out for easy motor testing. And when blowing out the motor with kerosene, wood alcohol or other "carbon remover" be sure you open the G-Piel, as this keeps the loosened deposit from getting into the muffler. Every enthusiastic motorist enjoys the sharp, clear bark of a powerful, sweet-running motor. A hot spark in every cylinder, valves opening wide and seating tight, just the right mixture from carburetor, exhaust gases scavenging freely through the G-Piel Cut-Out. Select the right size cut-out for your car from the G-Piel chart at your dealer's. It will save its cost many times in a single season. Write for special free literature today. Sales Department EDWARD A. CASSIDY CO. 270 Madison Ave. New York THE G-PIEL COMPANY The G PielPedal isabsolutely~os-Tho G- "iel tOses nazage itiveinaetion.Ittomu1lr 100% oftheex never stiks,. hau tshoot directlyinto Makes operating open air. any cut-outeasy. G-Piel Muffler Cut-Out Tells the motor's secrets How the Biggest Thing inLife Almost Passed Me By "That night at dinner my husband's two friends talked almost entirely to him-not to me. I was left out. "The things I said did not seem to hold their attention. Perhaps I lacked self-confidence at first. I know that I was humiliated and angry later on. "And it was not the first time that this had hap pened. Even when with women I had noticed it how they drifted away from me, and clustered around others who seemed to have a charm that I lacked. "That night, as I sat neglected at the head of my own table, I began wondering what was wrong. Listening to the brilliant conversation of these two men and my husband, I realized all at once that something was lacking in me. My viewpoint was too narrow-my interests too few. I had been tied down too much to my household and children. I had never gained the broad mental background that gave poise and charm to the very people I most ad mired. The biggest thing in life had almost passed me by." We have all met men and women whose rich and varied mental background gives them their vivid imagination and personality-gives them their in fluence over others-makes them always listened to. It is to gain this wide knowledge easily and delightfully that leaders in every branch of Amer can life have joined the Mentor Association-men and women like Judge Gary, Mary Roberts Rine hart, Mrs. Felix Warburg, Robert H. Ingersoll, and the Reverend Ernest M. Stires of New York. A new way to get in touch with the world Twice each month the Mentor Association brings you closely in touch with some fascinating realm of human knowledge and achievement -vivid stories of foreign countries and strange corners of the earth -sidelights on the world's great happenings Past and Present -how Man has mastered the elements-the splendid achievements of Science -comment on the greatest books of all Time and the men and women who wrote them -the wonders of the earth we live on-Nature, animate and inanimate -masters of melody-how they lived and worked -the magic of brush and palette - the history of Art through the centuries In your spare moments through the Mentor Association you can begin to build up that deep and varied mental background which brings poise, charm, and influence over others. Apply for membership today. Send no money. Read the coupon be low-clip it out-and mail it to us with your name and address. Mentor Association 114-116 East 16th St., Dept. Y, New York Please enroll me as a member of the Mentor Association for one year, with full privileges, and send me at once my first copy of the Mentor. I will remit my first payment of $1.00 upon re ceipt of statement, and the remainder in three monthly pay ments of $1.00 each ($4.00 in all for a full year's membership). Cancellation Privilege: It is understood that I can cancel my membership within 10 days after receiving my first Mentor, by simply sending you ten cents (one-half the regular copy price). Name .--------------- Address PRESS OF JUDD & DETWEILER. INC. WASHINGTON, D. C.