|Number of Cylinders||3 Cylinders|
|Weight (lbs/kg)||160.00 lbs / 72.57 kg|
|Length/width/height||30” x 21”x 19”|
Size MattersPerformance of any watercraft is dependent on weight and the ratio of available power to move that weight. Yamaha enhanced both ends of the equation by lightening the engine while making it more powerful at the same time.
The previous engine – the 1052cc MR-1 -- had four cylinders with five-valve heads and weighed just over 215 lbs. (97 kg). Its replacement shaves off a cylinder, and produces its power from 3 cylinders with only four valves each. Her displacement has changed little – just 3 cc less -- to 1049cc while the overall weight is now down to 160 lbs. (73 kg). This an impressive 25% less weight with virtually no change in displacement.
We have not yet tested this new engine, but we did have a chance to ride the new VX Limited featuring the TR-1 engine, and our initial impressions were positive. It appears Yamaha may have achieved their goals to provide quicker acceleration, and a higher top speed while improving fuel economy and an all around fun ride.Block Talk -- Less is More
Yamaha designers did not just make an engine with three large pistons with the same displacement of four smaller ones. They also eliminated the reduction gear, integrated the oil tank, attached the ECU and air filter to the motor, and used fewer parts throughout its design.
Yamahas are a favorite among PWC rental operations around the world, and one reason for that is the ability for Yamahas to hold up to corrosion. Let’s face it, rental PWCs are not loved like the family sled and saltwater environments can eat them alive. Yamaha knows this, so the TR-1 has improved coatings on critical surfaces to keep them looking and running longer.
The TR-1 will use Yamaha’s all-metal jet pump housing which uses a stainless steel three-bladed impeller and 155 mm aluminum nozzle for thrust.