Rotax

[T3E]

Hi!!..i have a question about the generator of the rotax 912 s2..i don't know if this is the right place for this thread but i try!...
If the generator fail in flight there is a possibility(when the battery is dead)that the engine die?..i know that in a normal general aviation engine the elettrical system is separate but i listen some rumors about this engine that is different from another (lycoming-Continental)...i hope that this is not possible!!

[sb_sfo]

Page 2 of this link http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/7a9381e9d6779f52862572b300720fe8/$FILE/E00051en.pdf

says it has a dual magneto system, so my guess would be that you will have ignition in case of electrical system failure. Your mileage may vary...

[mmbengt]

However, the Rotax 914 (turbo version) does not run without electric power due to the twin electrical fuel pumps used.

[Genghis the Engineer]

However, the Rotax 914 (turbo version) does not run without electric power due to the twin electrical fuel pumps used.

But those should run off the battery, for as long as that lasts anyhow.

Other Rotaxes should be using a pulse pump off crank case pressure.

G

[Ultra long hauler]

Which one consumes more fuel, please?
The 912 or 914?

Cheers,


###Ultra Long Hauler###

[Genghis the Engineer]

914 is turbocharged and has a greater power output, so has unsurprisingly greater fuel consumption.

In either of-course, it'll depend far more upon the installation and the power you're drawing from it.

G


Rotax 914 data. (http://www.rotaxservice.com/rotax_engines/rotax_914ULs.htm)

Rotax 912 data. (http://www.rotaxservice.com/rotax_engines/rotax_912ULSs.htm)

[mmbengt]

But those should run off the battery, for as long as that lasts anyhow.
The original question contained the phrase "when the battery is dead" (912 that is).

Anyhow, I have unsuccessfully tried to run my 914 without the pumps after a mishap where I unintentionally switched the pumps off. My fuel surface was perhaps 15 cm above the carburetors, but the turbo needs a fuel pressure of at least 0.25 bar above the boost pressure in the airbox.

/Bengt

/Bengt

[Pugilistic Animus]

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Oh you said RoTax...my dyslexia kicked in:}:ouch: