Engine start and idle detent question
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I’m a little puzzled by idle detent and throttle inputs, and I’m not sure whether this is normal behaviour or it indicates an issue of some kind.
I select JFS2 and RPM rises to 20%. I set throttle to approximately 50% and press Alt+i. The SEC light illuminates briefly and then goes out. RPM does not rise. I then reduce throttle to idle and then return it to 50%. RPM then rises.
It doesn’t seem to come out of idle detent without significant throttle input.
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Try pushing the throttle a bit further forward before hitting the ALT-I …. say 75%.
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That is because it is simulated. 50% is a bit high. Set to the point where you see the throttle start to move in the pit and then click detent, then add throttle to spool up.
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Its that moving forward after clicking detent that seems to do it. But I do see exceptions. I just do some quick rocking in knowledge from past experience it will work.
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This all depends on the HOTAS in use as well. The TM Warthog has a proper cutoff position and with correct coding it behaves exactly like the real aircraft. No throttle movements required other then moving out of cutoff.
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You can do that with any throttle by selecting the idle cutoff config option in F4patch. You just wont have the physical detent.
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I do the same as Blu3wolf, do not ‘use’ the throttle detent.
In videos I’ve seen of the real engine start the throttle detent is a mechanical device that is basically a latch that must be moved out of the way to allow the throttle to be shifted sideways before advancing it, or something like that.
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I do the same as Blu3wolf, do not ‘use’ the throttle detent.
In videos I’ve seen of the real engine start the throttle detent is a mechanical device that is basically a latch that must be moved out of the way to allow the throttle to be shifted sideways before advancing it, or something like that.
When it’s in the Idle Detent position, the throttle must be rotated outboard before it can be moved forward to the IDLE position. Once it’s in IDLE, to move the throttle to the cutoff position you need to depress the pinky switch and rotate the throttle outboard and then pull it all the way back.
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Double post.
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I tried every variation of throttle position from idle to 75% and RPM would only rise if I used the method I described.
In the actual jet the throttle is “maneouvered” into idle detent and RPM rises:
The question is, does that idle detent position correspond to idle throttle on a standard stick? Because if it does I would expect Alt+i to work without throttle movement.
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I tried every variation of throttle position from idle to 75% and RPM would only rise if I used the method I described.
In the actual jet the throttle is “maneouvered” into idle detent and RPM rises:
The question is, does that idle detent position correspond to idle throttle on a standard stick? Because if it does I would expect Alt+i to work without throttle movement.
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I tried every variation of throttle position from idle to 75% and RPM would only rise if I used the method I described.
In the actual jet the throttle is “maneouvered” into idle detent and RPM rises:
The question is, does that idle detent position correspond to idle throttle on a standard stick? Because if it does I would expect Alt+i to work without throttle movement.
It’s been a little while since I used BMS but I remember this part being a little wonky. You had to like move the throttle up and then hit the IDLE detent switch (pinky switch) which is not how it really works. In the real jet you just rotate the throttle outboard and move it to IDLE and no further.
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For us who doesn’t have any hardware idle detents, just slam the throttle to full, press alt+i (or click the clickspot), pull back to idle. It’s neither less nor more realistic than looking for 50% or 75% movement, and it becomes a very simple move (and it will not hurt the jet in the sim).
Sent from my SM-G920F using Tapatalk
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you need to check that the 'idle cutoff" setting is not activated in the bms config.
this options lets us pit builder omit the alt I keystroke and make theengine start as per the real life procedure which is according to position of the throttle handle.if it enabled and you don’t have a throttle gate like cockpit builders have, then you might have this problem…
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I don’t have cutoff enabled in configuration. With it enabled RPM actually rises without having to do anything.
This is from T.O. GR1F- 16CJ - 1CL - 2:
3. Throttle - Advance to IDLE at 20 percent rpm minimum.
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16. Throttle cutoff release - Check.It seems to me that better modelling of this procedure without use of an actual idle detent would be to push the throttle forward then return it to idle. I think that would better simulate pushing the throttle out of detent.
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that’s what i do
alt I
push throttle forward then backi’m not sure exactly how you’re supposed to do it but it always worked for me
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I don’t have cutoff enabled in configuration. With it enabled RPM actually rises without having to do anything.
That is incorrect. it does only if your throttle is past the detent set in the UI
This is from T.O. GR1F- 16CJ - 1CL - 2:
Tbh, we don’t care, please rather check the BMS Dash1
It seems to me that better modelling of this procedure without use of an actual idle detent would be to push the throttle forward then return it to idle. I think that would better simulate pushing the throttle out of detent.
Nope, the idle cutoff option from BMS config is 100% realistic, if set correctly. But to be able to use it you need strong physical detents to be sure that you don’t inadvertently go past the detent as you’re reducing throttle in flight. With the option enabled and going past the detent you will shut the engine off.
The ALT i is just a software detent overcoming that issue. it’s a compromise preventing ppl to complain that the engine shuts off without “obvious” reason
Although in real, the misnamed “idle detent” with is the cutoff lever must be depressed only to lift the throttle handle vertically to go past the idle point and therefore shutting the engine down.
The cutoff lever does not have to be depressed when you move the vertical throttle (in cutoff) to horizontal position in idle, which ignites the engine past JFS
left idle, right cutoff -
Well, I gave my experience after 45 minutes of testing each and every possibility. You can take it or leave it.
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I tried every variation of throttle position from idle to 75% and RPM would only rise if I used the method I described.
In the actual jet the throttle is “maneouvered” into idle detent and RPM rises:
The question is, does that idle detent position correspond to idle throttle on a standard stick? Because if it does I would expect Alt+i to work without throttle movement.
Always funny to see a cockpit that I know so well in real. Also note that the countermeasures panel is not shown at all!
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Well, I gave my experience after 45 minutes of testing each and every possibility. You can take it or leave it.
Apologies mate. I thought I 'd share my 15+ years of experience with the sim, and the pit I built around it to try to answer your question.
But if you gave it 45 minutes testing and made up your mind, all’s good
Have fun