mixture lever problems

[gilbertohasnofb]

The mixture lever has no limits for its movement and can go inside the panel or float in the cockpit (see images below). It also is not connected to /controls/engines/engine/mixture, but only to /controls/engines/engine/mixture-lever, which means the mixture is always at 0% when using either the keyboard keys m and M or the mouse to drag the lever.

[gilbertohasnofb]

See the properties values here:

[Harald67]

I was able to reproduce the problem of the moving limits of the lever with m and M keys. The fact that the mixture property is still at 0 is normal, this is a property that I use to control the jsbsim engine and is not directly tied to the mixture lever position. With a running engine the two properties probably have the same value.

[gilbertohasnofb]

With a running engine the two properties probably have the same value.

Well, that seems to be a problem then because how can I start the engine with that property at 0? When I click hot start, for instance, both mixtures get the same value (and the engine isn't on yet). With a cold start, the mixture is always at 0, and no matter how much I crank it the engine never starts.

I also noticed that the property /controls/engines/engine/primer is set to 3 during a hot start, but is always set to 0 on a cold start no matter how much I prime it.

Are you able to start the plane from a cold start?

[Harald67]

From the 'Cold start' button :

• master ON
• throttle 30%
• mixture 100%
• ignition switch on BOTH
• prime 3 times (that is 6 times Shift-o key)
• press 's' until the engine starts

[gilbertohasnofb]

I am doing exactly that but I can't start the engine :cry:

My console outputs a bunch of messages like this, by the way:

engineTemp=56.10173469075221 pump=0 => mixture=0
engineTemp=56.10681007566927 pump=0 => mixture=0
engineTemp=56.11087298931784 pump=0 => mixture=0
engineTemp=56.11493821246529 pump=0 => mixture=0
engineTemp=56.11900573893945 pump=0 => mixture=0

I really feel that for some reason the mixture is read as being at 0% even though I have it full rich.

[gilbertohasnofb]

By the way, the levers have indeed been fixed, so we can close this issue. But I still would like to know more about starting the engine as I am not being able to do so here

[Harald67]

can you post the whole console log that is outputed when pressing the 's' key ? mixture and pump should be higher than 0.

[gilbertohasnofb]

Here we go:

Enabling ATI viewport hack
Loading local weather routines...
new electrical breaker  : FUEL IND + INST LTS breaker, 3.1 Ampere
new electrical breaker  : Radio 1 breaker, 10.1 Ampere
new electrical breaker  : Radio 2 breaker, 5.099999999999999 Ampere
new electrical breaker  : Radio 3 breaker, 5.099999999999999 Ampere
new electrical breaker  : NAV + DOME breaker, 10.1 Ampere
new electrical breaker  : PITOT HT + BCN breaker, 20.1 Ampere
new electrical breaker  : STROBE breaker, 10.1 Ampere
new electrical breaker  : LDG LTS breaker, 20.1 Ampere
new electrical breaker  : FLAPS SLO/BLO breaker, 15.09999999999999 Ampere
new electrical breaker  : Alternator breaker, 15.09999999999999 Ampere
new electrical breaker  : Master breaker, 50.09999999999999 Ampere
new electrical output : NAV LT, 5.599999999999999 Watt
new electrical output : DOME LT, 0.3 Watt
new electrical output : BCN, 7 Watt
new electrical output : PITOT HT, 1 Watt
new electrical output : Strobe Lights, 3 Watt
new electrical output : LDG LTS, 20 Watt
new electrical output : Flaps, 15 Watt
    using unknown switch : /controls/switches/flaps
new electrical output : Radio 1, 2.5 Watt
new electrical output : Radio 2, 1.9 Watt
new electrical output : Transponder, 1 Watt
new electrical output : Carb Heat, 1 Watt
new electrical output : Turn Coordinator, 0.8 Watt
new electrical output : Instrument Lights, 1.1 Watt
new electrical output : Annunciator, 1 Watt
new electrical output : HSI, 1 Watt
new electrical output : Audio Panel 1, 1 Watt
new electrical output : ADF, 1 Watt
new electrical output : Starter, 2 Watt
c150 initializing...
FDM is initialized...
cold start
Electrical system initialized
engineTemp=59.08288189938162 pump=0 => mixture=0
engineTemp=59.08183754857657 pump=0 => mixture=0
engineTemp=59.08079015937028 pump=0 => mixture=0
engineTemp=59.07967441553478 pump=0 => mixture=0
engineTemp=59.07829064195823 pump=0 => mixture=0
engineTemp=59.07663945470347 pump=0 => mixture=0
engineTemp=59.07473688644598 pump=0 => mixture=0
engineTemp=59.07259886889209 pump=0 => mixture=0
engineTemp=59.0702410390079 pump=0 => mixture=0
engineTemp=59.06767859850868 pump=0 => mixture=0
engineTemp=59.06492618623725 pump=0 => mixture=0
engineTemp=59.06199781665919 pump=0 => mixture=0
engineTemp=59.05890680004949 pump=0 => mixture=0
engineTemp=59.05566571703832 pump=0 => mixture=0
engineTemp=59.05228639211851 pump=0 => mixture=0
engineTemp=59.0487798894892 pump=0 => mixture=0
engineTemp=59.04541909851048 pump=0 => mixture=0
engineTemp=59.04142585220916 pump=0 => mixture=0
engineTemp=59.03759674626452 pump=0 => mixture=0
engineTemp=59.03396026151938 pump=0 => mixture=0
engineTemp=59.02996380453987 pump=0 => mixture=0
engineTemp=59.02589101171873 pump=0 => mixture=0
engineTemp=59.02174823341568 pump=0 => mixture=0
engineTemp=59.01754127032177 pump=0 => mixture=0
engineTemp=59.01327541030082 pump=0 => mixture=0
engineTemp=59.00895546464914 pump=0 => mixture=0
engineTemp=59.00458580334805 pump=0 => mixture=0
engineTemp=59.00017038899932 pump=0 => mixture=0
engineTemp=58.99571280922407 pump=0 => mixture=0
engineTemp=58.99121630737352 pump=0 => mixture=0
engineTemp=58.98668381146808 pump=0 => mixture=0
engineTemp=58.98211796112935 pump=0 => mixture=0
engineTemp=58.97752113367209 pump=0 => mixture=0
engineTemp=58.97289546645799 pump=0 => mixture=0
engineTemp=58.96824287933066 pump=0 => mixture=0
engineTemp=58.96356509497389 pump=0 => mixture=0
engineTemp=58.95886365709214 pump=0 => mixture=0
engineTemp=58.95413994723026 pump=0 => mixture=0
engineTemp=58.94939520063678 pump=0 => mixture=0
engineTemp=58.94463040608957 pump=0 => mixture=0
engineTemp=58.94018919709379 pump=0 => mixture=0
engineTemp=58.93538875971581 pump=0 => mixture=0
engineTemp=58.93057097785163 pump=0 => mixture=0
engineTemp=58.92573643616151 pump=0 => mixture=0
engineTemp=58.92123309015801 pump=0 => mixture=0
engineTemp=58.91636825676221 pump=0 => mixture=0
engineTemp=58.91113915933056 pump=0 => mixture=0
engineTemp=58.90659397575393 pump=0 => mixture=0
engineTemp=58.90168534894633 pump=0 => mixture=0
engineTemp=58.89676286608642 pump=0 => mixture=0
engineTemp=58.89182682656553 pump=0 => mixture=0
engineTemp=58.88687749379119 pump=0 => mixture=0
engineTemp=58.88191509914849 pump=0 => mixture=0
engineTemp=58.87693984555597 pump=0 => mixture=0
engineTemp=58.8719518527472 pump=0 => mixture=0
engineTemp=58.86695139176652 pump=0 => mixture=0
engineTemp=58.86193854010685 pump=0 => mixture=0
engineTemp=58.85691341555559 pump=0 => mixture=0
engineTemp=58.85187612041284 pump=0 => mixture=0
engineTemp=58.84682674327178 pump=0 => mixture=0
engineTemp=58.84176536073483 pump=0 => mixture=0
engineTemp=58.83669203871591 pump=0 => mixture=0
engineTemp=58.83160683386564 pump=0 => mixture=0
engineTemp=58.82650979471146 pump=0 => mixture=0
engineTemp=58.82140096260002 pump=0 => mixture=0
engineTemp=58.81628025666032 pump=0 => mixture=0
engineTemp=58.81114793855659 pump=0 => mixture=0
engineTemp=58.80637174325932 pump=0 => mixture=0
engineTemp=58.80121687343205 pump=0 => mixture=0
engineTemp=58.79605033746498 pump=0 => mixture=0
engineTemp=58.79087214982609 pump=0 => mixture=0
engineTemp=58.78568232237239 pump=0 => mixture=0
engineTemp=58.78048086468743 pump=0 => mixture=0
engineTemp=58.77526778436277 pump=0 => mixture=0
engineTemp=58.77004308740629 pump=0 => mixture=0
engineTemp=58.76480666248767 pump=0 => mixture=0
engineTemp=58.75993398944741 pump=0 => mixture=0
engineTemp=58.7546751787786 pump=0 => mixture=0
engineTemp=58.74940476358551 pump=0 => mixture=0
engineTemp=58.7441228608111 pump=0 => mixture=0
engineTemp=58.73882935500956 pump=0 => mixture=0
engineTemp=58.73390357573714 pump=0 => mixture=0
engineTemp=58.72820741843498 pump=0 => mixture=0
engineTemp=58.72287910280113 pump=0 => mixture=0
engineTemp=58.71792099880497 pump=0 => mixture=0
engineTemp=58.71218754156951 pump=0 => mixture=0
engineTemp=58.70682441013344 pump=0 => mixture=0
engineTemp=58.70183409067034 pump=0 => mixture=0
engineTemp=58.69644845727715 pump=0 => mixture=0
engineTemp=58.69105127292642 pump=0 => mixture=0
engineTemp=58.68564253669729 pump=0 => mixture=0
engineTemp=58.6802221897891 pump=0 => mixture=0
engineTemp=58.67479017350672 pump=0 => mixture=0
engineTemp=58.66973593886053 pump=0 => mixture=0
engineTemp=58.66389141993989 pump=0 => mixture=0
engineTemp=58.65881561846209 pump=0 => mixture=0
engineTemp=58.65333803818032 pump=0 => mixture=0
engineTemp=58.64784884412347 pump=0 => mixture=0
engineTemp=58.64195455265462 pump=0 => mixture=0
engineTemp=58.63683549827329 pump=0 => mixture=0
engineTemp=58.63091631980933 pump=0 => mixture=0
engineTemp=58.62577581276833 pump=0 => mixture=0
engineTemp=58.62022854959207 pump=0 => mixture=0
engineTemp=58.61506724518597 pump=0 => mixture=0
engineTemp=58.59561695610637 pump=0 => mixture=0
engineTemp=58.59095776867116 pump=0 => mixture=0
engineTemp=58.58620997223954 pump=0 => mixture=0
engineTemp=58.58137873608723 pump=0 => mixture=0
engineTemp=58.57646901903058 pump=0 => mixture=0
engineTemp=58.57148555547326 pump=0 => mixture=0
engineTemp=58.566432849021 pump=0 => mixture=0
engineTemp=58.56131516504047 pump=0 => mixture=0
engineTemp=58.55650848675646 pump=0 => mixture=0
engineTemp=58.55127660856783 pump=0 => mixture=0
engineTemp=58.54599094161881 pump=0 => mixture=0
engineTemp=58.54065478462838 pump=0 => mixture=0
engineTemp=58.53527116073963 pump=0 => mixture=0
engineTemp=58.52984320583312 pump=0 => mixture=0
engineTemp=58.52476566617395 pump=0 => mixture=0

[Harald67]

good catch again, I am using shift-o to pump and you are using the lever but the lever does not work correctly.

[gilbertohasnofb]

I am using shift-o to pump and you are using the lever but the lever does not work correctly.

I can confirm that using Shift+O does indeed makes the priming system work (according to the console), but I still can't start the plane for some reason! See:

[...]
old start
Electrical system initialized
engineTemp=59.22572355959244 pump=3 => mixture=1
engineTemp=59.22529731948896 pump=2.9 => mixture=1
engineTemp=59.22472561838992 pump=2.799999999999999 => mixture=1
engineTemp=59.22422226698484 pump=2.699999999999999 => mixture=1
engineTemp=59.22373593932389 pump=2.599999999999999 => mixture=1
engineTemp=59.22314591228428 pump=2.499999999999999 => mixture=1
engineTemp=59.22245617392901 pump=2.399999999999999 => mixture=1
engineTemp=59.22146003159435 pump=2.299999999999999 => mixture=1
engineTemp=59.22056090142848 pump=2.199999999999999 => mixture=1
engineTemp=59.21931604072119 pump=2.099999999999999 => mixture=1
engineTemp=59.21822827710241 pump=1.999999999999999 => mixture=1
engineTemp=59.2170632107169 pump=1.899999999999999 => mixture=1
engineTemp=59.21550415174067 pump=1.799999999999999 => mixture=1
engineTemp=59.21417922187857 pump=1.699999999999999 => mixture=1
engineTemp=59.21243201519792 pump=1.599999999999999 => mixture=1
engineTemp=59.21096553835992 pump=1.499999999999999 => mixture=1
engineTemp=59.20905209975103 pump=1.399999999999999 => mixture=1
engineTemp=59.20746077934529 pump=1.299999999999998 => mixture=1
engineTemp=59.20581888279765 pump=1.199999999999998 => mixture=1
engineTemp=59.20369972101969 pump=1.099999999999998 => mixture=1
engineTemp=59.20195404656624 pump=0.9999999999999982 => mixture=0
engineTemp=59.19971321855781 pump=0.8999999999999982 => mixture=0
engineTemp=59.19787624540719 pump=0.7999999999999983 => mixture=0
engineTemp=59.19600227105741 pump=0.6999999999999984 => mixture=0
engineTemp=59.19409330274573 pump=0.5999999999999984 => mixture=0
engineTemp=59.19166081530238 pump=0.4999999999999984 => mixture=0
engineTemp=59.18967979655281 pump=0.3999999999999984 => mixture=0
engineTemp=59.18716256086452 pump=0.2999999999999985 => mixture=0
engineTemp=59.18511768475753 pump=0.1999999999999985 => mixture=0
engineTemp=59.18304673436967 pump=0.09999999999999847 => mixture=0
engineTemp=59.18095098824585 pump=0 => mixture=0
engineTemp=59.17829832479174 pump=0 => mixture=0
engineTemp=59.17561089516629 pump=0 => mixture=0
engineTemp=59.17343715250786 pump=0 => mixture=0
engineTemp=59.17124324512111 pump=0 => mixture=0
engineTemp=59.16903013140484 pump=0 => mixture=0
engineTemp=59.16623790945801 pump=0 => mixture=0
engineTemp=59.16341816757926 pump=0 => mixture=0
engineTemp=59.16114332717939 pump=0 => mixture=0
engineTemp=59.15885225454269 pump=0 => mixture=0
engineTemp=59.15654548448993 pump=0 => mixture=0
engineTemp=59.15422350879509 pump=0 => mixture=0
engineTemp=59.15130043472879 pump=0 => mixture=0
engineTemp=59.14835510795069 pump=0 => mixture=0
engineTemp=59.14598323587404 pump=0 => mixture=0
engineTemp=59.14359791831179 pump=0 => mixture=0
engineTemp=59.14059792195838 pump=0 => mixture=0
engineTemp=59.13818343264348 pump=0 => mixture=0
engineTemp=59.13575640136514 pump=0 => mixture=0
engineTemp=59.13270541721727 pump=0 => mixture=0
engineTemp=59.13025097469517 pump=0 => mixture=0
engineTemp=59.12778466486396 pump=0 => mixture=0
engineTemp=59.12468537876839 pump=0 => mixture=0
engineTemp=59.12156817808193 pump=0 => mixture=0
engineTemp=59.11906157754549 pump=0 => mixture=0
engineTemp=59.1165437645194 pump=0 => mixture=0
engineTemp=59.11401485026249 pump=0 => mixture=0
engineTemp=59.11083834476062 pump=0 => mixture=0
engineTemp=59.10828480792747 pump=0 => mixture=0
engineTemp=59.10507779480861 pump=0 => mixture=0
engineTemp=59.10250004600448 pump=0 => mixture=0
engineTemp=59.08668821004573 pump=0 => mixture=0

good catch again

Two pairs of eyes are always better than one pair! :smiley:

[Harald67]

I changed the condition a bit so I can start the engine with one less primer pump, so with 3 pumps it should work for you too.

[gilbertohasnofb]

I will test it in the master branch in a second, I am working on the instruments right now. But according to the console log above, I did indeed use 3 pumps, see the first line: engineTemp=59.22572355959244 pump=3 => mixture=1 So it's still a mystery to me why you are able to start the plane and I am not.

[gilbertohasnofb]

We can close this, as the mixture lever looks good and works properly. Also, I have been able to start the plane manually since some time ago, so it looks to be all good now!