434 THROTTLE AXIS MISMATCH CAUSES HOT ENGINE AT RAMP START
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Do you systematically put full throttle and back prior to JFS start ?
No not that often! I didn’t have such issues with 433. I 'll try some starts with wake up procedures tonight.
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No not that often! I didn’t have such issues with 433. I 'll try some starts with wake up procedures tonight.
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this is absolutly mandatory in 4.34 for those who use analog idle cut off
you must synchronize your throttle position before JFS start, therefore move full range up and down your throttle
you have of course a physical Detent ? (not the one in the cougar )
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Do you systematically put full throttle and back prior to JFS start ?
I systematically move the throttle before engine start. Im unsure whether to the stops - I move it until I see it move in the pit, then retract it fully. Part of the VERIFY check; Throttle - OFF.
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I systematically move the throttle before engine start. Im unsure whether to the stops - I move it until I see it move in the pit, then retract it fully. Part of the VERIFY check; Throttle - OFF.
So you should be safe
No spiking of your throttle ?
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Pretty sure not. I’ll do some more starts when I get a chance tonight and make sure it’s not just bad luck… I’m a bit busy atm
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No not that often! I didn’t have such issues with 433. I 'll try some starts with wake up procedures tonight.
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Follow procerures.
What the “Verify Check” is saying? …
THROTTLE: OFF
…
Follow procedures.
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The problem was simple and obvious…
Throttle position and calibration became sure enough more critical with 4.34.
As RD said….In 433 I was using only the cut off position as a detent fixed at the second mechanical detent of the TQS leaving the idle position just a bit lower of the first mechanical detent. In 434 I have to fix idle analogue detent to first mechanical click of TQS so that the second one is the off position. Now I have no hot starts no mater if I push to idle at 20 or 25 rpm and no matter if I wake up the throttle or not.
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I systematically move the throttle before engine start. Im unsure whether to the stops - I move it until I see it move in the pit, then retract it fully. Part of the VERIFY check; Throttle - OFF.
This is correct and has been the case for a long time. Since at least 4.32.
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er… I know. Ive been doing the VERIFY check since then.
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Then Im just having a very unusual series of rolls on that percentage table, I guess. I havent done hundreds of flights yet, though. So its possible, I guess.
Ive done a few starts tonight which are working as expected. Perhaps Ive just had some bad luck; that, or introducing fuel before 20% somehow?
Seems to be working now though.