Join Date: Oct 2007
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Tohatsu was aware that a percentage of the population would not understand that a four-stroke engine might lack the ability TO DEVELOP IT"S HORSEPOWER in the auxilary engine role in some applications. Audeojude is the perfect example of that percentage. It's not his fault or anyone's else's for that matter. In fact, if anyone is to blame it is all of the outboard manufacturers, as a collective group, for not having the fortitude to tell people that four-stroke engines were a step backward in relevant performance. IE a 4-stroke< 2-stroke by nature of the engine design. A four-stroke can only meet a 2-stokes power output as the RPM increases. In Audeojudes case the engine cannot achieve it's operating RPM as the load that he is pushing is too great for the propeller type that he is using. Since it can't reach it's operating RPM it can't generate the propeller revolutions necessary for the boat to achieve hull speed. The general rule, at a minimum(MINIMUM), for an auxilary engine on a displacement hull is 1 hp for every 500 lbs of loaded boat. He's almost certainly over that by x lbs. There has to be a straw that backs the camels back and its his bad luck that his application had one too many straws. It's not an engine design error or any nefarious intention to underrate an outboards power output. In addition, as someone pointed out earlier, there is a difference in the ability to develop power between a one-cylinder and two-cylinder engine. One cylinder engines (all brands) have a hard time keeping up with a two cylinder (all brands) of the same HP.
It's also not the fault of the dealer that sold him the engine. A little personal responsibility for ones own decision is good for the soul. Dealers can't take back an engine once it has been used and resell it as a new engine. The situation sucks, but thats life.
Last edited by TohatsuGuru; 10-03-2007 at 08:08 PM.