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4A THE OSHAWA TIMES, Soturdey, April 22, 1967 Correct Prop The search for the right pro- peller can be a frustrating ex- perience. As one man com- plained, "I can't get a straight answer from anyone!" The people dodging this man's questions were actually doing him a favor, says the Evinrude News Bureau. There just aren't any simple formu- las. A shakedown cruise is ab- solutely necessary. Sometimes the boatman might have to make a dozen test runs, says the Evinrude engineer. A propeller converts energy, or the torque of the turning crankshaft, into forward thrust. The wrong propeller can upset this power balance and result in poor performance or 'serious engine damage. Manufacturers equip out- boards with a "'standard" pro- peller. It is designed to allow the engine to run at its rated | rpm and horsepower, at full| throttle on an average boat} with an average load. With the | wide variety of boats on the | market and the many enginé combinations, it's ob-| vious that this standard prop may not fill the bill in many cases. In fact, on many instal- | lations the standard propeller | should be changed before the} first run. Propeller selection charts can | make the search a lot easier. These charts are also based on the average boat with an aver- age load. Unusual hull designs | or load conditions may make} it necessary to make a further | run. | Before starting out, make PROPELLER SEARCH TRYING sure your outboard is properly | --. Many Points To Observe tuned. An engine in need of re-| | pair will give misleading in- inches in over-all length. | States. shrimp may measure eight| amateur hunters in the United necessary if you expect to ob- formation. You'll also need al BIG SHRIMP MILLIONS HAVE GUNS tachometer to check the rpm's | The sidestripe or giant red| There are 13,500,000 registered | Produced by the engine. Proper transom height is alee | tain accurate information. © if BOATS 12' CARTOPS od | 35 $129 *145 14' Fiberglass $ RUNABOUTS 549 1.7 HP. MIGHTY $95 SERVICE -- SALES -- REPAIRS -- RENTALS @ Ski-Doo Snowmobiles @ Chrysler Outboards and Boats and many others @ Homelite Chain Saws © Wiscott Boat Trailers OUTBOARDS CHRYSLER Outboards eee USE OUR * TIME PAYMENT PLAN SERVICE We Service and Repair All Makes of Outboards, Boats and Power Mowers in Our New Service Shop. Factory Trained Mechanics Do Repairs Right on The Premises. UNITED RENT-ALL & MARINE 555 KING ST. E. at WILSON TELEPHONE 728-5565 TENT TRAILERS & ii a & a & a & | ] Government Approved & a e a E E H change after the initial test | Sm . , the equipment sheard that you Delivers | expect to carry this summes, ' | Make sure it is properly dis | tributed. Your engine was builf to operate at full throttle, so de Very Top P erformance 'al Lh Peng and record . Your owner's manual lists the the transom is too high, propel-| oorrect rpm range for your en« ler slippage (cavitation) may) pine. at full throttle check the result. If the transom is t00|;,chometer to see if the rpm low, the lower unit will produce reading corresponds with your excessive drag' The normal | janual's recommendations. transom height is 15 inches, but th di - check with your marine dealer If the reading exceeds the to be sure it's the correct|™maximum, you need a propel height for your motor. ler with more pitch. The : | 'Pitch' is the angle that the The vertical angle of the low-| blades are attached to the hub, er unit affects over-all per-|The greater the pitch, the formance. The correct angle| greater the bite the blades can a oe gata ge by make into the water. You're serving how the boat operates : at full speed. A planing type robbing yourself of performance hull should ride with the bow|4nd speed if you operate am slightly out of the water. If the | outboard over the maximum boat porpoises, the lower unit|/ rpm range. It might seem log is too far out. A bow that digs |jeai that the more ypm's the pg gM gl iM gag the low more speed, This is only true Start out with the propeller | UP. to a point. After you exceed recommended on the selection | the maximum, you are actually the _Selection-- chart. load all Hosing | speed, LEARN TO FLY at the "' OSHAWA FLYING CLUB For Business ond Pleasure Flying School, first demonstration lesson. 'PRIVATE AND COMMERCIAL COURSES Call for Special Chartered Flights & =z H $ ond this clipped advertisement will entitle you te ir 5.00 clan man a Clip This Ad -- See Us Todoygeapmemsnn For His Greatest Pleasure PIPES » Gz¢gham Exclusive Maple-wood Distillator rem tongue-bite and juice. Ideal for beginners ---- Treosured by seasoned smokers, Mike's Place Ltd. Shorty's Smoke Shop 17 King St. W. 121 Brock St. N. Oshawe, Ont. Whitby, Ont. Wood's Covalier (sleeps 6) Wood's Boron (Sleeps 8) ACCESSORIES Paddies $1.99 each with any purchase. Quality Castrol Outboard Oil 49c qt. Yearning for a Yacht? Get an HFC Big Purchase Loan For any important purchase, you're better off buying with cash. You can shop anywhere for the best bargains, take advantage of cash savings. Get that cash from HFC. Bor- row confidently-- repay conveniently. 73.35) 90.18]: ee eee ee a ey Call us "Sp 88.02 | 108.22]. ASK ABOUT CREDIT 117.37 | 144.30) , LIFE INSURANCE 26 | 146.71 | 180.37 AT LOW GROUP RATES 'Above payments inclide principal and interest ond sre based HOUSEHOLD FINANC Ask about our evening hours 2 OSHAWA OFFICES Suite 208, Oshawa Shopping Ctr.--Ph. 725-1138 (northwest! corner, over Fairweather's) 64 King Street East--Telephone 725-6526 (next to the Genosha Hotel) AJAX: 66 Harwood Avenve South........20.66+ .++.Telephone 942-6820 lover ver The Advertiser) CeCe OV Cee eee ee ea ee