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Old 15 July 2007, 15:36   #1
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Country: UK - England
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Dynos, Dynamometers.

Hi,
Are these common?

Are they very expensive?

How do they actually work?

Questions, questions, questions

Cheers,

Orve.
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Old 15 July 2007, 15:48   #2
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Orve,

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

Best of luck.
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Old 15 July 2007, 15:51   #3
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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.
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Old 15 July 2007, 16:37   #4
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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.


Quote:
Originally Posted by Orville View Post
Hi,
Are these common?

Are they very expensive?

How do they actually work?

Questions, questions, questions

Cheers,

Orve.
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Old 16 July 2007, 07:01   #5
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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.
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Old 16 July 2007, 07:07   #6
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http://boatmad.com/forum/showthread....highlight=dyno

Might need to register to see the pics.
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