Dynos, Dynamometers.

[David G]

Hi,
Are these common?

Are they very expensive?

How do they actually work?

Questions, questions, questions

Cheers,

Orve.

[Biggles]

Orve,

You got problems? If so and this forum doesn 't give you the answers try www.iboats.com.

Best of luck.

[codprawn]

Of course Dynos work. There are many different kinds - usually they work by braking the engine down to a stop. There are all sorts from the rolling roads used to test cars to special Dyno carriages used on trains.

[Matt]

Assuming you mean for a boat.
a) No
b) Yes.
c) Normally have a hydraulic pump attached to the propshaft instead of the prop.
d) Yes.

A more common (though still rare) option for loading a boat motor for testing is a test wheel.

Originally Posted by Orville

Hi,
Are these common?

Are they very expensive?

How do they actually work?

Questions, questions, questions

Cheers,

Orve.

[fast fred]

this power head is on a Dyno,

with a test wheel you can get a good idea of what is goin on, the thing that thay call a prop shaft dyno, looked like a test wheel in a water jug, didnt seem to have a way to mesure the torque. torque is what you are messurein, hp is a product of Torque.

[Matt]

http://boatmad.com/forum/showthread....highlight=dyno

Might need to register to see the pics.