P-120 turbo charged  
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All Forums >> RC Airplanes >> RC Jets >> Turbine Clinic >> JetCat Turbine Direct Support >> P-120 turbo charged
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P-120 turbo charged - 6/22/2008 1:40:42 AM   
kelly vallee


 

Posts: 230
Joined: 6/18/2002
From: Granby, QC, CANADA
Status: offline 		Today I tried out the jet and started up the P-120, everything was good at start-up. But we tried to go full power and is seen that around 90,000 rpm, that a turbo boost kick in. This is the first time this has happen, what up?
       Post #: 1

RE: P-120 turbo charged - 6/22/2008 3:39:08 AM   
dbarrym



Posts: 1202
Joined: 10/21/2003
From: Carlsbad, CA, USA
Status: offline 		Not exactly sure what you mean, but it sounds like you are experiencing the usual, non-linear throttle response typical of turbines....the majority of thrust in made in the upper 30% of the RPM range. Do a search on "throttle curve" and you'll see several solutions to flatten out the throttle response using a throttle curve and/or mixing in your TX.

Barry

(in reply to kelly vallee)
       Post #: 2

RE: P-120 turbo charged - 6/22/2008 7:39:24 PM   
Thud_Driver



Posts: 975
Joined: 12/29/2001
From: Victorville, CA,
Status: online 		JetCat has put in some new acceleration ramps in the software that improve engine response at higher rpms. On the ground or during takeoff, you will hear/notice this surge in the rpm range you mentioned.

(in reply to dbarrym)
       Post #: 3

RE: P-120 turbo charged - 6/22/2008 11:05:06 PM   
kelly vallee


 

Posts: 230
Joined: 6/18/2002
From: Granby, QC, CANADA
Status: offline 		I could see this happening, if I have upgraded the ECU. But I have not done any changes to the turbine.

(in reply to Thud_Driver)
       Post #: 4

RE: P-120 turbo charged - 6/23/2008 12:03:34 AM   
Thud_Driver



Posts: 975
Joined: 12/29/2001
From: Victorville, CA,
Status: online 		What version software is in the ECU?

(in reply to kelly vallee)
       Post #: 5

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All Forums >> RC Airplanes >> RC Jets >> Turbine Clinic >> JetCat Turbine Direct Support >> P-120 turbo charged
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