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Choosing An Outboard Motor

Choosing An Outboard Motor

30 years ago American producers dominated the outboard motor market.Names reminiscent of Mercury, Johnson, Evinrude and Chrysler, led the sector competing with one another to produce bigger and better outboard engines. However, while this was going on they have been neglecting the smallest of the outboards. These are the outboard motors that sell in the greatest of numbers and are sometimes the first outboard many people, buy. This being the case many of us keep on with the identical brand (model loyalty) as we buy different bigger outboards over the years. The Japanese seized on this fact and gradually Honda, Yamaha, Suzuki and Tohatsu concentrating on small outboards started to take over as market leaders. They achieved this domination by improving efficiency and reliability. As well as adding features to these small outboards beforehand only found on larger engines.

Having achieved success within the small outboard market, these Japanese manufacturers expanded up the power range. They again came to dominate the outboard engine market as much as at the very least 20 hp. The American manufacturers instead of competing with the Japanese, gave up and decided to buy these engines from the Japanese and badge them as their own. Now the Chinese have entered the market. Basically doing what the Japanese did previously, copying the very best features of the present engines and at the similar time keeping costs down.

So allow us to examine the outboards which are on supply for these looking for an outboard motor for his or her dinghy. If we take a fairly bigger dinghy say, a Pioner 12, so that every outboard has to push a reasonably heavy weight via the water. If we then take the next outboard motors :

Mercury 2.5hp; Mercury 3.5hp; Mariner 2.5hp; Tohatsu 3.5hp; Yamaha 2.5hp; Suzuki 2.5hp; Honda 2.3hp; and a Parsun 2.6hp. All these outboards are four stroke engines. This is because of an E.U. Directive that prevents 2 strokes from being sold in the E.U. These outboards will provide a reasonably wide range of engines available in the marketplace, for powering dinghies.

To judge one engine in opposition to the one other several tests were completed. A Bollard pull test showed that the Mercury 3.5hp and Tohatsu 3.5hp have been essentially the most highly effective at 90lbs of thrust (These engines together with the Mariner are virtually an identical). The least efficient was the Honda 2.3hp at 66lbs of thrust. In between have been the Suzuki 2.5hp at 83lbs of thrust, the Yamaha 2.5hp at 78lbs of thrust and the Parsun 2.6hp at 70 lbs of thrust.

Next test was Fuel Consumption. At full speed - 5.seventy five knots, the most effective outboards were the Yamaha 2.5hp and the Suzuki 2.5hp by at the very least 20%. The worst was the Parsun 2.6hp. When the throttles have been eased and the dinghy was cruising the Fuel Consumption comparability was less evident, only about 10% difference. All these figures are for 4 stroke engines. However, based mostly on figures beforehand recorded for two strokes under related circumstances, the older engines had been as much as 50% less fuel environment friendly at full speed. Very thirsty! Bear in mind 2 stroke outboards are still available second hand.

Then the burden of each outboard motor was compared. Four stroke engines are heavier than older 2 strokes because of the powerhead etc. The Mercury, Mariner, Tohatsu, Yamaha and Parsun all weighed approx. 38 - 41 lbs (18 kg.). Nonetheless, the Honda 2.3hp and Suzuki 2.5hp weighed so much less at 28 lbs (12.5 kg.).

Although the Parsun was the most cost effective and it is virtually an identical the identical engine as in the Yamaha 2.5hp, it is not as good. It's a bit like me following a Gordon Ramsay recipe, to the letter, however when compared side by side you just know that his is going to be that much better. The Chinese are able to copy, just just like the Japanese did earlier than them, however they haven't acquired it right, yet!

Finally a little bit about every outboard tested. The Mercury, Mariner and Tohatsu are the same engine. Beginning settings for the throttle are easy to understand with the choke and cease button clearly labelled. The petrol on/off faucet just isn't so clearly marked. All these motors have gears. Ahead and impartial then using the 360 degree rotation you may get astern thrust. There are four tilt positions and a shallow water ability. Oil levels could be simply checked by viewing the indicator on the side of the engine cover.

The Yamaha 2.5hp also had simply understood starting and stopping settings but the oil stage gauge was out of sight under the engine casing cover. As with the Mercury outboard the Yamaha 2.5hp has gears, ahead and impartial with 360 degree rotation. In contrast to the Mercury which has a shear pin, the Yamaha has a rubber hub on the propeller, so no shear pin to break.

The Suzuki 2.5hp is as above but with the oil gauge easily seen on the side of the cover. The propeller has a shear pin with spares stowed under the engine cover.

The Honda 2.3hp shouldn't be water cooled like all the opposite outboards tested. It is aircooled and has no gears. Instead it uses a centrifugal clutch. This makes starting and maneuvering more troublesome than the others. It merely takes a bit of getting used to it. The oil gauge is out of sight under the cover. The propeller has a shear pin with spares saved under the engine cover.

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