Rotax 912 ULS Bench Test

by Tan Miken in 912 / 914 Technical Questions 8 years ago

Hi, recently i bought a Rotax 912ULS engine and i decided to do a bench engine run without propeller attach to it. What is the recommended rpm that the engine can go.
And also what are the parameter should be shown and observed on the panel.

Re: Rotax 912 ULS Bench Test

by Bill Hertzel » 8 years ago

Bill Hertzel

13 1.95k 7.98k

Make sure your affairs are in order! :ohmy:

The Prop is a virtual flywheel for the engine.
Bench testing commonly uses a test prop commonly called a "Test Club".

Beware that the springs in the throttle default to Wide Open, Not Idle!
If you start it, it will be past its 5800 rpm Red Line in a hurry!

Have you thought about how you are going to supply the oil and water?
Radiator? Oil cooler and Separator?

If you want to test it,
Mount it on an airframe with all the accessories and a real prop.

Live long and safely!

Bill Hertzel
Rotax 912is
North Ridgeville, OH, USA
Clicking the "Thank You" is Always Appreciated by Everyone.

Thank you said by: Tan Miken

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Re: Rotax 912 ULS Bench Test

by Tan Miken » 8 years ago

Tan Miken

3 2 0

Thanks for you reply i m currently still planing for the bench test.and i designung myself a engine stand specifically for this test aswell.

with a test prop whats the max rpm that the engine can go?
And without the prop whats the max idle speed before the engine goes overspeed ?

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Re: Rotax 912 ULS Bench Test

by Alan Arnold » 8 years ago

Alan Arnold

20 188 145

5800 RPM is the 5 minute red line, aka NEVER exheed speed, with or without a prop. Rotax says not to start the engine without a prop.

Alan

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Re: Rotax 912 ULS Bench Test

by Jacques Foucher » 8 years ago

Jacques Foucher

19 108 247

No propeller , no test , simple :evil:

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Re: Rotax 912 ULS Bench Test

by Yahya » 4 years ago

Yahya

1 1 2

Hello everyone . Can u help me where can I purchase a Rotax 914 ul bench test ?

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Rotax 912 ULS Bench Test

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