Stuck Throttle on Alphasim Aircraft: F-104 and CF-105

delta_lima

delta_lima

Charter Member 2015
Hello all,

I noticed a strange phenomenon on (so far) these two aircraft. Once started, they accelerate at full throttle. Neither throttling back on the joystick nor on the throttle in the VC does anything - it/they stay pegged 100% max thrust.

Does anyone have an idea why, and/or a fix?

many thanks,

dl
 
Hello,

Yes! I also noticed!
The other big problem is that the Alphasim F-89 Scorpion does not rise to the take off

It really would be nice if there were a solution to eliminate these anomalies...
 
On the F-104 backslash out this line from the [Vcockpit01] panel config like this
//gauge42=ALPHA_F104!autotoggle_AB_98, 6,2,10,10
That will fix the throttle but the down side is no burner after..
The other two planes I don't have so I don't know could be the same issue with the 105.
 
I'll have a look at these 2 in the next day or so.

If I can come up with a fix I'll post them here.

BR's,
mal
 
There is a genral fix for the stuck throttles at full power, If you go to your aircraft configeration and look for the turbine engine data in the entry afterburner_available=1 change the 1 to zero, you will lose the afterburner effect but the throttles will no longer stick and will still fly like a bat out of hell.
 
Thanks chaps,

What causes this? is it .air? panel.cfg?

Bummer that either way I lose the AB effect. Is it a matter of assigning a different AB effect?

What about a different AB approach - in fact, I hate that most military aircraft in FS have this wrong - where throttle @ max = full power+AB, whereas throttle @ max = military power power only, and AB requires a separate key. The FSD T-38 had this, and I thought that was a far more realistic approach.

Anyone know if I disable out the offending light, if I can add the effect (if not the actual boost, since that would be ideal) by way of actuating the "AB" key (I still have that as a button my on my joystick, hoping to use it someday ....)

Thanks,

dl
 
Guys, I have a fix for this. Many of the old Alphasim models that were ported or even in some cases native FSX models have an older AB gauge that causes the throttle to get stuck after going to full power/AB. Usually, you can strike the F1 key and unstick the throttle out of AB but going back into AB will normally result in a repeat of the issue. So, here is the fix. Go to flightsim.com and download ab_f16_.zip and move the gauge folder into your fsx gauges. From there, you will need to open the panel config file and identify the AB gauge currently in use which is normally in the [Vcockpit01] section and is usually named "autotoggle_AB" or "autotoggle_AB_98". Just comment out those with double forward slashes //. Next, add the following lines to the bottom of the panel config entry:

[VcockpitXX]
Background_color=0,0,0
size_mm=32,32
visible=0
pixel_size=32,32
texture=$exhaust

gauge00=KO_F16_FX!F16_AB_THROGGLE, 0,0,1,1

Save that edit.

Then make sure the AB effect light entry in the aircraft cfg file first entry number is 9 so that the gauge will reference the effect and activate it. This mod should work on all of the old Alphasim models that have AB/Throttle sticking issues. It also fixes a number of older models ported to FSX like Rollus's F-8 Crusader.

Hope this helps. PM me if you need any tech help!
 
I'm sure there have been general fixes for these issues posted before but for the life of me I can't find them! However I think the problem was pinned down to the way FSX handles afterburner commands from the aircraft.cfg file. This seems to work for me on the AS Starfighter:-

[TurbineEngineData]
fuel_flow_gain=0.006
inlet_area=7.500
rated_N2_rpm=7460.000
static_thrust=11870.000
afterburner_available=1
afterburner_throttle_threshold = 0.00
reverser_available=0.000
ThrustSpecificFuelConsumption = 1.0
AfterBurnThrustSpecificFuelConsumption = 1.0

I think you can either enter your own numbers for the ab throttle threshold and for the specific fuel consumptions or let the model do it for you by using 0 and 1.0 as above. The trick is that line 'afterburner_throttle_threshold' which FSX looks for, and if it can't find it, it won't let you throttle back. I certainly have an FSX vs2 for the AS Starfighter which has this change and I think it came from Alphasim.

Believe me, all this is pushing my personal technical envelope!! But I have all my old FS9 portovers configured like this now and they all work fine.

Best wishes DL

DaveQ
 
Hello DQ,

I couldn't find anything different between your entry and stock ... but I replaced it anyway, and now it works .... bizarre .... happy ending though.

Will tinker with the '105 Arrow next.

many thanks,

dl

PS: Storm et al, I'm having trouble with the Iris Mig 29 and Alpha Mig 25 AB still - I'll play around with these suggestions, as they may prove to be the answer. As noted on the thread on those, the problem there is the effect (not the throttle) is stuck. So maybe this is the key ...
 
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