30 years ago American producers dominated the outboard motor market.Names resembling Mercury, Johnson, Evinrude and Chrysler, led the sector competing with each other to produce bigger and better outboard engines. Nonetheless, while this was happening they have been neglecting the smallest of the outboards. These are the outboard motors that sell within the greatest of numbers and are often the primary outboard many people, buy. This being the case many of us persist with the same brand (brand loyalty) as we purchase different bigger outboards over the years. The Japanese seized on this fact and gradually Honda, Yamaha, Suzuki and Tohatsu concentrating on small outboards began to take over as market leaders. They achieved this domination by improving effectivity and reliability. As well as adding features to these small outboards beforehand only discovered on bigger engines.
Having achieved success within the small outboard market, these Japanese manufacturers expanded up the power range. They once more got here to dominate the outboard engine market up to at the very least 20 hp. The American producers instead of competing with the Japanese, gave up and determined to purchase these engines from the Japanese and badge them as their own. Now the Chinese have entered the market. Basically doing what the Japanese did beforehand, copying the perfect options of the present engines and on the identical time keeping prices down.
So let us compare the outboards which are on offer for these in search of 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 through the water. If we then take the following 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 4 stroke engines. This is due to an E.U. Directive that stops 2 strokes from being sold in the E.U. These outboards will provide a fairly wide range of engines available on the market, for powering dinghies.
To evaluate one engine against the one other several tests have been completed. A Bollard pull test showed that the Mercury 3.5hp and Tohatsu 3.5hp have been probably the most powerful at 90lbs of thrust (These two engines along with the Mariner are virtually 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.
Subsequent test was Fuel Consumption. At full velocity - 5.75 knots, the best outboards have been the Yamaha 2.5hp and the Suzuki 2.5hp by at the least 20%. The worst was the Parsun 2.6hp. When the throttles were eased and the dinghy was cruising the Fuel Consumption comparison was less evident, only about 10% difference. All these figures are for four stroke engines. However, based on figures beforehand recorded for 2 strokes under comparable circumstances, the older engines were up to 50% less fuel efficient at full speed. Very thirsty! Remember 2 stroke outboards are nonetheless available second hand.
Then the burden of each outboard motor was compared. 4 stroke engines are heavier than older 2 strokes because of the powerhead etc. The Mercury, Mariner, Tohatsu, Yamaha and Parsun all weighed approx. 38 - forty one lbs (18 kg.). However, the Honda 2.3hp and Suzuki 2.5hp weighed a lot less at 28 lbs (12.5 kg.).
Though the Parsun was the most affordable and it's virtually identical the same engine as within the Yamaha 2.5hp, it's not as good. It's a bit like me following a Gordon Ramsay recipe, to the letter, but when compared side by side you just know that his is going to be that much better. The Chinese are able to repeat, just just like the Japanese did earlier than them, however they have not acquired it right, but!
Finally slightly about every outboard tested. The Mercury, Mariner and Tohatsu are the same engine. Beginning settings for the throttle are simple to understand with the choke and cease button clearly labelled. The petrol on/off faucet is just not so clearly marked. All these motors have gears. Ahead and neutral then using the 360 degree rotation you will get astern thrust. There are four tilt positions and a shallow water ability. Oil ranges might be simply checked by viewing the indicator on the side of the engine cover.
The Yamaha 2.5hp also had easily understood beginning and stopping settings but the oil level gauge was out of sight under the engine casing cover. As with the Mercury outboard the Yamaha 2.5hp has gears, ahead and neutral 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 however with the oil gauge simply viewed at 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 simply takes a little bit of getting used to it. The oil gauge is out of sight under the cover. The propeller has a shear pin with spares kept under the engine cover.
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