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CAPTAIN SIM FORUM › 757 Captain › 757 version 1.x-2.x (FS9 ONLY) › Auto-throttle: engines revving up and down

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Auto-throttle: engines revving up and down (Read 4213 times)

kerke Full Member Offline Posts: 24 Joined: Oct 14^th, 2009	Auto-throttle: engines revving up and down Oct 14^th, 2009 at 2:04pm	Print Post
	First time poster and new CS757 Pro Pack v2.2 on FS9/XP Pro owner. I love this plane but I have a couple of questions/issues: 1) Something I've noticed, specially on approach, when flying leveled at about 210KIAS with auto-throttle ON: the engines revving up and down -- engines constantly spool up and down. Is that a bug? 2) My speed bugs don't show on the panel speed indicator instrument. Thank you in advance, Kerke


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kerke Full Member Offline Posts: 24 Joined: Oct 14^th, 2009	Re: Auto-throttle: engines revving up and down Reply #1 - Oct 20^th, 2009 at 12:42pm	Print Post
	Does anybody know? Does anybody care?


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Raven Full Member Offline Posts: 127 Joined: Jul 27^th, 2009 Gender:	Re: Auto-throttle: engines revving up and down Reply #2 - Oct 21^st, 2009 at 4:01am	Print Post
	Hi Kerke. Speed bugs don't show in VC in 2D everything's OK. As for engines this may happen if you fly in real weather and the wind is unstable and changes direction, though I never use autothrottle below 10000.


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kerke Full Member Offline Posts: 24 Joined: Oct 14^th, 2009	Re: Auto-throttle: engines revving up and down Reply #3 - Apr 21^st, 2010 at 6:28pm	Print Post
	Raven wrote on Oct 21^st, 2009 at 4:01am: As for engines this may happen if you fly in real weather and the wind is unstable and changes direction, though I never use autothrottle below 10000. It is not the wind. I experienced this autothrottle speed hunting issue even on a no-wind flight. The autothrottle speed hunting behaviour happens, for instance, on leveled flight during autopilot heading turns. For example, I am flying with autothrottle ON and VNAV or ALT HLD, leveled at cruise altitute (i.e. FL370, FL240, 12000, etc.) heading 360 on HDG SEL... change the heading selection to, say, heading 260 and right-click the HDG SEL knob to begin the A/P heading turn from 360 to 260... See what happens? Not only does this aircraft engines start to rev up and down to try and maintain the autothrottle speed, it also becomes somewhat unstable trying to climb and descend to maintain the A/P altitude during the turn. None of my other payware aircraft do that.


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Joeflyer Full Member Offline Posts: 134 Location: Memphis,Tn Joined: Jun 9^th, 2006	Re: Auto-throttle: engines revving up and down Reply #4 - Jun 4^th, 2010 at 7:51pm	Print Post
	This may be a stab in the dark, but do you have a registered version of FSUIPC? Maybe the aircraft is getting intermittent spikes via the flight controller you use. Just a thought....

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kerke Full Member Offline Posts: 24 Joined: Oct 14^th, 2009	Re: Auto-throttle: engines revving up and down Reply #5 - Jun 30^th, 2010 at 8:57pm	Print Post
	Joeflyer wrote on Jun 4^th, 2010 at 7:51pm: This may be a stab in the dark, but do you have a registered version of FSUIPC? Maybe the aircraft is getting intermittent spikes via the flight controller you use. Just a thought.... Yes I do have a registered FSUIPC. It's not intermittent spikes, it only happens with the CS757, not with the other payware aircraft.


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