The 250 test in Ribmagazine

[joakimhansson]

With the test on a Ballistic.

Yamaha 5000-6000rpm

Mercury 5800-6400rpm

Suzuki 5500-8100rpm (must be wrong?)

Evinrude 5500-6000rpm

On all engines the fuel consumption is tested with 2,3,4,5000rpm. But whats the rpm on topspeed? 5000rpm?
And is it better to go to highest possible rpm for the engine, it must had to do with the torque.
Topspeed at 5000rpm with a "big" prop or Topspeed at 6000rpm with a "smaller" prop. Ok, I understund the difference in acceleration. Can I find Torque curves on the engines?
The consumtion?

[Fjordrafting]

A more normal way to do the test is to go for wot on all engines, and then compaire. Then take off 500 rpm on all engines and compaire and so on untill they have covered it all.
There has been a much better consumptiontest in US. This test has been copied and showed on rib.net.

[Polwart]

Originally Posted by joakimhansson

With the test on a Ballistic.

Yamaha 5000-6000rpm

Mercury 5800-6400rpm

Suzuki 5500-8100rpm (must be wrong?)

Evinrude 5500-6000rpm

On all engines the fuel consumption is tested with 2,3,4,5000rpm. But whats the rpm on topspeed? 5000rpm?
And is it better to go to highest possible rpm for the engine, it must had to do with the torque.
Topspeed at 5000rpm with a "big" prop or Topspeed at 6000rpm with a "smaller" prop. Ok, I understund the difference in acceleration. Can I find Torque curves on the engines?
The consumtion?

Oh oh - another contravertial topic: Engine tests (RIVAs ballistics)

Yes there is an error in the RPM for the Suzuki corrected in next issue.
The Suzuki fuel consumption tests were also repeated with more realistic results.

[joakimhansson]

Yes, but I couldn´t find answer on the other Q I had! About rpm and torque...