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Jet Central Mammoth SE 250

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Old 07-05-2018, 09:59 AM
  #1  
mkomsa
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Default Jet Central Mammoth SE 250

I have a new Jet Central Mammoth SE 250 that cannot develop full rated power. It is supposed to have a maximum RPM of 108K. My maximum RPM is 104K.
I have had to lower the max rpm using the ECU terminal to 104K to prevent an error during startup. If I use the ECU's Terminal to set the max RPM to the factory rated 108K, I get a Low RPM error during startup.

It appears that the Jet Central SE 250 Powerpack fuel pump cannot deliver enough fuel to the turbine. I am using all large 3/16" ID fuel fittings.

I talked to Jose Melendez about this. We changed some of the ECU settings. Still cannot get the rated max 108K rpm.

The SE Powerpack that I received with my Mammoth 250 is exactly the same size as the SE Powerpack for my Cheetah 160. I was told by our local turbine expert that the Mammoth SE Powerpack is supposed to be larger in size that the one used for the Cheetah 160.

Has anyone else had similar issues with the 250?
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Old 07-05-2018, 03:36 PM
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jetmon
 
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Hello mkomsa
Can you please send me a download of your parameters and the last 2 flights to jruiz@dym.com.mx
Thanks
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Old 07-26-2018, 01:37 PM
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mkomsa
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The Mammoth was returned to the factory on July 13 for inspection and repairs. I received the Mammoth back on July 25. Jet Central paid for the DHL Express shipping both ways to Mexico.

I ran the Mammoth today on my test stand. The startup was normal with no issues. Ran it up to full throttle and it reached the maximum rated power at 108k RPM.

Juan, thanks much for the fast turnaround!

Kind regards,

Mark Komsa
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Old 07-27-2018, 06:22 AM
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Mannyr
 
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We glad that you are happy now!
We are here to help you.

Please, contact us if you have any questions.
Thank you

Manny Rodriguez
JetCentralUSA
Manny@aeropanda.com
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Old 07-27-2018, 06:45 PM
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Mannyr
 
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Mark,

We are glad that the turbine is running now as your expected.
If you need farther assistance or you have any other questions, please don't hesitate to contact us.

Best Regards,

Manny Rodriguez
JetCentral USA
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