Choosing An Outboard Motor

Choosing An Outboard Motor

30 years ago American manufacturers dominated the outboard motor market.Names equivalent to Mercury, Johnson, Evinrude and Chrysler, led the sphere competing with each other to produce bigger and better outboard engines. Nonetheless, while this was occurring 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 primary outboard many people, buy. This being the case many people follow the same model (brand loyalty) as we buy other 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 options to those small outboards previously only found on bigger engines.

Having achieved success within the small outboard market, these Japanese manufacturers expanded up the facility range. They once more came to dominate the outboard engine market as much as at the least 20 hp. The American manufacturers 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 at the identical time keeping costs down.

So allow us to compare the outboards which might be on supply 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 by means of 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 four stroke engines. This is because of an E.U. Directive that forestalls 2 strokes from being sold within the E.U. These outboards will provide a reasonably wide range of engines available available on the market, for powering dinghies.

To guage one engine towards the one other several tests were completed. A Bollard pull test showed that the Mercury 3.5hp and Tohatsu 3.5hp had been probably the most powerful at 90lbs of thrust (These engines along with the Mariner are virtually identical). The least efficient 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 most effective outboards have been 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 comparison was less evident, only about 10% difference. All these figures are for 4 stroke engines. Nonetheless, based on figures previously recorded for two strokes under similar circumstances, the older engines were up to 50% less fuel efficient at full speed. Very thirsty! Bear in mind 2 stroke outboards are nonetheless available second hand.

Then the weight 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 - 41 lbs (18 kg.). Nevertheless, the Honda 2.3hp and Suzuki 2.5hp weighed rather a lot less at 28 lbs (12.5 kg.).

Though the Parsun was the most cost effective and it's virtually equivalent the identical 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 a lot better. The Chinese are able to copy, just just like the Japanese did before them, but they have not bought it right, yet!

Finally a little bit about each outboard tested. The Mercury, Mariner and Tohatsu are the identical engine. Starting settings for the throttle are simple to understand with the choke and stop button clearly labelled. The petrol on/off faucet is just not so clearly marked. All these motors have gears. Ahead and impartial then using the 360 degree rotation you can get astern thrust. There are 4 tilt positions and a shallow water ability. Oil levels will be easily checked by viewing the indicator on the side of the engine cover.

The Yamaha 2.5hp also had easily understood beginning and stopping settings however 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 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 but with the oil gauge simply seen on 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's aircooled and has no gears. Instead it makes use of a centrifugal clutch. This makes starting and maneuvering more troublesome than the others. It merely 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 stored under the engine cover.

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