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180nx won’t accelerate past 60,000 rpm

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180nx won’t accelerate past 60,000 rpm

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Old 05-11-2023, 05:54 PM
  #1  
JetCat220rxi
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Default 180nx won’t accelerate past 60,000 rpm

Hello,

I have a 180nx. It’s starts. Runs. But when the throttle is advanced it will accelerate some. But not past 60,000rpm or so. UAT. And all fuel systems fine. Tried a new 12.0 ECU. Still doesn’t work.

I ran it yesterday and it was fine.

Dave…..any advice?

thanks,
Derrick
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Old 05-11-2023, 08:53 PM
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Dave Wilshere
 
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Have you looked at pump voltages when it’s running?
When you open the throttle stick, when it stops accelerating what happens with the commanded rpm figure under the actual rpm figure?

I would do a system reset, (Hold select menu down until it says system reset on power up and then relearn RC) This clears the stored pump/rpm mapping back to default. Try again

Dave
Old 05-12-2023, 03:48 AM
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JetCat220rxi
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Default 180nx

I believe I tried a reset and relearned. The max pump volt is set in the ecu at 4.65. When the throttle is advanced it stops between 1.9 and 2.2 volts. And won’t accelerate any higher. I will try and reset again today. It ran fine during ground test at home. At an event now it’s acting up.

Thanks,
derrick
Old 05-12-2023, 07:50 AM
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Dave Wilshere
 
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Was it very hot? What is the acceleration set to? Normal?
Old 05-15-2023, 06:26 PM
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JetCat220rxi
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Default 180nx

Temps are good on startup. Set acceleration to slow and normal. Advanced throttle super slow. No joy. Sending engine in to Powerbox USA

i will post the diagnosis when I get the engine back.

Thanks
Old 05-15-2023, 08:48 PM
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Dave Wilshere
 
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OK. I meant where you are, was the weather Hot.

Let us know what they find.
Old 09-16-2023, 12:29 PM
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alfa1023
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Assume you got your turbine back - what was the resolution to this issue?

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