Prop reverse needed

[stephan]

I watched the movie Air America and thought,"Let me see if I can find a C-123 with the Air America texture." and sure enough,there are a couple to be downloaded. So,I downloaded them. One in particular,is a beauty. Flys like a dream,and lands beautifully. No complaints what so ever. HOWEVER,even tho many prop ac didnt have prop reverse capabilities,I have added it to some in the past. BUT,I forgot how I altered the cfg and air files. Realism,as far as if an ac has reverse or not doesnt concern me. I like what I like. And I would like to add prop reverse to my C-123 for my FS9. Does anyone out there know what lines in the cfg and air file needs altered and changed to what values? I can fudge the numbers some,but I need the line numbers to know which to alter. Thanks y'all.

[Webb]

I didn't even know that was possible in a prop. After a little Googling I found it is not uncommon in amphibious aircraft.

FWIW and at your own risk (backup before modifying) I found this in my Dash 8 aircraft.cfg file.

[propeller]
propeller_type=0
propeller_diameter=8.750
propeller_blades=4
propeller_moi=120.000
beta_max=45.000
beta_min=12.000
min_gov_rpm=25520.000
prop_tc=0.004
gear_reduction_ratio=17.600
fixed_pitch_beta=0.000
low_speed_theory_limit=80.000
prop_sync_available=0
prop_deice_available=0
prop_feathering_available=1
prop_auto_feathering_available=1
min_rpm_for_feather=700.000
beta_feather=79.300
power_absorbed_cf=0.900
defeathering_accumulators_available=0
prop_reverse_available=1
minimum_on_ground_beta=1.000
minimum_reverse_beta=-14.000

[Flacke]

Hiya, the C-123 most likely would have had reverse thrust for added braking at heavy weights and short runways.
Have you checked the throttle quadrant on your sim. C123 to really look hard for a reverse thrust setting on your throttles? It may or may not be there but its worth another look since you enjoy using it [ I love reverse thrust too]. Good luck with this.

[ttiedman]

[GeneralEngineData]
engine_type = 5
Engine.0 = -2.4, 0.0, 0.0
fuel_flow_scalar = 1.12
min_throttle_limit = -0.25

If you are unhappy with the amount of thrust reverse, go to the [GeneralEngineData]
section of the aircraft.cfg and if the min_throttle_limit is, for example, like this one... -0.25, try changing it to -0.45, then fly. If still
not enough thrust reverse, try -0.55. If -0.45 was too much thrust reverse, try -0.35, etc. etc. Play around with it 'til you find your sweet
spot. This number might appear as a positive number when used with an aircraft which had no thrust reverse, but this number is
usually (if not always) a negative number when used on aircraft with thrust reverse, so make sure you enter these values as negative
numbers in order to obtain your desired thrust reverse.

[stephan]

Thanks for the replies folks. I use the negative numbers in the throttle limit frequently on all of my jets. I'm not strict on realism. That is why I add reverse prop thrust on all of the prop planes i have,IF I can. The most common figures found dont work with the C-123 I have. I dont remember the creator of it,but his name sounds like he is Russian. The ac is really nice. I have made comparisons between the C123 and the ac I have that DO have revers
e thrust,and have tried nearly all variations to no effect. One change I made,I got from a forum in AVSIM,and when I applied it,my sim froze. I attempted this 4 times,so as to eliminate the possibility of a computer freakish glitch,but when I removed that particular change,my sim no longer crashed (froze).That change actually prevented me from escaping the sim completely and I had to hit my power button on the computer,then restart the whole system.
ANYWAY..thanks for the time you folks have spent to help. I am not giving up yet. BUT,I am thinking the problem that prevents me from adding reverse thrust may be in the model file,which one cant access / breakdown to edit. At least,I dont have those program tools and even so,from what I have seen in GMAX when I tried to make my own AC,...one needs to really know their stuff in the aeronautic arena to understand what all the figured mean and do. So...my search continues,and I am hoping the problem is NOT in the model file.
...
BTW... my throttle quadrant doesnt have a reverse prop thrust device but that never stopped me from being able to add the effect to some of the other ac.

[garymbuska]

Okay Now I can not see where adding prop reverse to a Cessna 150 is really needed. But it is your sim not mine if that is what you like than go for it.
My self I prefer to keep realistic as much as I can. Which is why I hate to download say a B747-400 only to find out it uses the panel from the B737-400 That really gets me going nothing like a two engine panel for a plane that has four engines. Needless to say unless the plane is really a good one it winds up in the recycle bin but the Panel has got to go.

[OldShaky]

Have you ever seen an old C-124 backing up using reverse props? It does tend to overheat the engines if you aren't careful. I've seen it done in tight parking areas.

[Flacke]

Okay Now I can not see where adding prop reverse to a Cessna 150 is really needed. But it is your sim not mine if that is what you like than go for it.
My self I prefer to keep realistic as much as I can. Which is why I hate to download say a B747-400 only to find out it uses the panel from the B737-400 That really gets me going nothing like a two engine panel for a plane that has four engines. Needless to say unless the plane is really a good one it winds up in the recycle bin but the Panel has got to go.

Hi, I feel EXACTLY the same way. I want my airplanes to have the CORRECT PANEL for the aircraft type. And I too will punt a crappy aircraft add-on the the bin if its not reasonably good. I don't want a whole bunch of airplanes that I hate sitting on my system.
This way when I select an aircraft to fly , I know I like it and I will enjoy the flight/trip.

[Jetranger]

RE: Gary ?

Re: "That really gets me going"

So - Gary, from what you are explaining, if I understand you correctly,,,, - my 747's aren't supposed to Hover ???

Now I find out 10 years later all this time I been Hovering in my 747's

and parkin' 747's on Heli' pads

[tbus]

Now I find out 10 years later ... all this time I been Hovering in my 747's

and parkin' 747's on Heli' pads

...... told ya to cut back on that "medication" ......

[logjam]

Reminds me of the 84 Squadron Beverly at Nairobi Eastleigh that backed up using it's 4 massive Hercules engines and twisted the right undercarriage off turning. I don't think I have a digitized picture saved, but I bet there's one somewhere on the net.

[tbus]

Okay Now I can not see where adding prop reverse to a Cessna 150 is really needed. But it is your sim not mine if that is what you like than go for it.

Se Que? Where did the Cessna 150 come from? ...... talking about a C-123 prior to this ...... I think.

[stephan]

Thanks Tbus for clarifying that for them. Yep,...I am speaking about the C-123. AND,...my preferences are my choice. As a matter of fact,ALL of the motorcycles I have owned and a few cars as well,I have chopped and modified. AND,...were I a mega-millionaire,and could afford my own aircraft,you can bet it would have the engines switched so reverse props could be operated,as well as any other modifications needed to ensure the frame integrity and afford me a safe flight. I never forget the fact that this FS9 is a simulator,and we can modify and manipulate things as we wish.Otherwise,all the files would be encoded to prevent any changes . How one chooses to run his sim doesnt need sneering at. Some desire realistic ac as possible. I dont think adding a reverse to a non reverse ac is all that impractical ,far fetched or silly. To each his own. Were it not for people modifying things in this world,we would all be driving cars that have the same design and look since the first one rolled off the assembly line,not to mention just about everything else we are connected with in our daily lives. That being said,I am still looking for an answer to modifying my cfg and air files to add reverse to my C-123.If nothing shows in this thread,I may try my hand at adapting an air and cfg file from another ac that does have it,and that will be a project I wont hurry. I will,sooner or later get my C-123 with reverse props.

[Fozzer]

The control panel in my little Cessna 150/152 in the Flight Simulator bears no relationship whatsoever to a real Cessna 150/152 panel, but it contains everything that gives me great pleasure to "fly" it in the Simulator!...>>>



It has everything I need...real, or not!

It will also cruise at 140+ knots!... ...!

FSX/FS 2004: A computer game!... ...!

(Its all in the mind, you know).... ...!

Paul.... ...!

[stephan]

Got that right Paul. I just finished a game of HALO and switched CDs to my FS9 (because my other computer croaked on me a couple weeks ago,then finally died completely about 5 days ago.) So I use one computer for a couple games . It is running even as I am here upstairs on this computer typing this. I like to give the sim several minutes for all flights to get into the air so nothing is bunched up and the system resources are at cruise speed. I agree with you completely. I even modified my PMDG 747 QotS 747 panel (which was no picnic) to suit my needs. Realism dictates that the panels we get with ANY ac for sim wouldnt fly the real deal. Just not enough room for all the bells and whistles for ALL of the actual gauges,and electronics. So,...realism,..or what one feels is realistic,has its limits in simming. That being said,...realism isnt something to be had in FS9. So,we do what we must to make our ac pleasing to ourselves. So,when I ask for a little help,I really dont mind someone telling me my needs or wants arent realistic. Just as long as they realize realism does have its limits in simming and we ALL make do in our own way to enjoy the GAME.