30 years ago American manufacturers dominated the outboard motor market.Names akin to Mercury, Johnson, Evinrude and Chrysler, led the field competing with one another to produce bigger and higher 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 sometimes the first outboard many people, buy. This being the case many people keep on with the identical model (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 started 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 in the small outboard market, these Japanese manufacturers expanded up the ability range. They again got here to dominate the outboard engine market as much as at the very least 20 hp. The American producers instead of competing with the Japanese, gave up and decided 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 previously, copying the best options of the current engines and on the similar time keeping prices down.
So let us compare the outboards which might be on offer for these looking for an outboard motor for their dinghy. If we take a reasonably larger dinghy say, a Pioner 12, so that each 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 4 stroke engines. This is because of an E.U. Directive that prevents 2 strokes from being sold within the E.U. These outboards will provide a reasonably wide range of engines available in the marketplace, for powering dinghies.
To guage 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 had been essentially the most powerful at 90lbs of thrust (These two engines along with the Mariner are virtually identical). The least effective was the Honda 2.3hp at 66lbs of thrust. In between were 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 pace - 5.seventy five knots, the best outboards have been the Yamaha 2.5hp and the Suzuki 2.5hp by at least 20%. The worst was the Parsun 2.6hp. When the throttles have been eased and the dinghy was cruising the Fuel Consumption comparison was less evident, only about 10% difference. All these figures are for 4 stroke engines. However, primarily based on figures previously recorded for two strokes under comparable circumstances, the older engines had been up to 50% less fuel efficient at full speed. Very thirsty! Keep 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 - forty one lbs (18 kg.). Nevertheless, the Honda 2.3hp and Suzuki 2.5hp weighed so much less at 28 lbs (12.5 kg.).
Although the Parsun was the most affordable and it is virtually an identical the identical engine as within the Yamaha 2.5hp, it isn't 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 a lot better. The Chinese are able to repeat, just like the Japanese did earlier than them, but they haven't got it right, yet!
Finally a bit of about every outboard tested. The Mercury, Mariner and Tohatsu are the identical engine. Beginning settings for the throttle are straightforward to understand with the choke and cease button clearly labelled. The petrol on/off faucet isn't so clearly marked. All these motors have gears. Ahead and impartial then utilizing the 360 degree rotation you can get astern thrust. There are 4 tilt positions and a shallow water ability. Oil levels can be easily checked by viewing the indicator on the side of the engine cover.
The Yamaha 2.5hp also had simply understood beginning and stopping settings however the oil degree 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. Not like 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 is not water cooled like all the other outboards tested. It is aircooled and has no gears. Instead it uses a centrifugal clutch. This makes starting and maneuvering more difficult 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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