Jump to content

You're browsing the 2004-2023 VATSIM Forums archive. All content is preserved in a read-only fashion.
For the latest forum posts, please visit https://forum.vatsim.net.

Need to find something? Use the Google search below.

Maddog 2008 Engine Start issue


Sean Hatfield 1165048
 Share

Recommended Posts

Sean Hatfield 1165048
Posted
Posted

Been flying the Maddog 2008 model for some time with no issues. Just did a flight with it today and had not a single issue. However, just a few moments ago when I was pushing back and firing the old girl up, engine 2 EGT skyrocketed, the engine overheated, then shut down. I reviewed my start-up procedure.

 

::APU-Running

::APU Air-Open

::Supply Air-Off

::Fuel Boost Pumps-On

::PNEU Pressure-36psi

::Engine X-Feeds-Open

::Throttles-Idle

 

I open the start valve for Engine 2; N2 slowly climbs to 23% and EGT Spikes at 130 at 15% N2 before dropping back down. I open the engine cut-off valve, N1 and Oil pressure rise. I release the engine start switch, everything stabilizes, then very quickly, EGT rises to 630degrees. What am I doing wrong?

Link to comment
Share on other sites

Martin Bergin 931070
Posted
Posted

I think, and forgive me if I'm wrong as its very late(or early if you like) here. You need to start in the default Cessna, turn it off and make sure you pull the mixture fully out. You then load the Maddog and it should work correctly. This worked for me, so [Mod - Happy Thoughts]uming it is the same issue, and it sounds like it is this should work.

Link to comment
Share on other sites

Sean Hatfield 1165048
Posted
Posted
I think, and forgive me if I'm wrong as its very late(or early if you like) here. You need to start in the default Cessna, turn it off and make sure you pull the mixture fully out. You then load the Maddog and it should work correctly. This worked for me, so [Mod - Happy Thoughts]uming it is the same issue, and it sounds like it is this should work.

 

Attempted that, but a new problem surfaced. Now, when I engage either engine starter switch, a random .txt file pops up along with my web browser. I've only had this damn airplane for a little bit and I'm already thinking it was a waste of money. I've had only 2 or 3 good flights and now all these problems are coming up. I've been trying to contact LSH to see if they can help me but I've yet to see anyone come up with a firm solution. Has anyone else experienced these problems?

Link to comment
Share on other sites

Charan Kumar
Posted
Posted

Sean, what you are listing looks like a good pre-startup checklist. BTW, I haven't read the manual extremely thoroughly but I don't use the Fuel boost pump to start at all. In fact, I notice the problem you mention sometimes when I have used it with the Fuel Boost pump on. That said.

 

The particular problem you mention happens to me when I start in extreme cold conditions, or extreme warm climates, well the latter hardly exists when/where I tend to fly, but the former exists a lot. At what airport and what OAT was it. I wonder if that has an effect and if your checklist should be different in that case. Also sometimes, bringing throttle back with Yokes doesn't help and so I have gotten used to pressing F1 before start, key for Idle Throttle. It will certainly happen even if you throttle is slightly open.

When is your next Flight||VATSIM HitSquad Member, ZOA/ZAK/GANDER/P1

 

Link to comment
Share on other sites

Sean Hatfield 1165048
Posted
Posted
Sean, what you are listing looks like a good pre-startup checklist. BTW, I haven't read the manual extremely thoroughly but I don't use the Fuel boost pump to start at all. In fact, I notice the problem you mention sometimes when I have used it with the Fuel Boost pump on. That said.

 

The particular problem you mention happens to me when I start in extreme cold conditions, or extreme warm climates, well the latter hardly exists when/where I tend to fly, but the former exists a lot. At what airport and what OAT was it. I wonder if that has an effect and if your checklist should be different in that case. Also sometimes, bringing throttle back with Yokes doesn't help and so I have gotten used to pressing F1 before start, key for Idle Throttle. It will certainly happen even if you throttle is slightly open.

 

Even after going through the manual with a fine tooth comb, I produce the same problem. However, after a lengthy wait, a member of the LSH Maddog team finally got in contact with me. His first suggestion was that I start the simulator in a cold and dark scenario, which so far I've yet to have a single problem with an engine fire since I started that.

 

Another lucky bit is that the team member also is a real world MD-8X captain. While he believes that the following information was included in the Maddog 2010 package and not the 2008, he tells me that if I'm not starting from cold and dark to run the start up procedure as normal, bring the starter to maximum motoring, and wait for the EGT gauge to read less than 80 degrees. Then open the fuel valves. Now while I've had a few mishaps with this procedure, it does seem to work.

Link to comment
Share on other sites

Charan Kumar
Posted
Posted
...bring the starter to maximum motoring, and wait for the EGT gauge to read less than 80 degrees. Then open the fuel valves. Now while I've had a few mishaps with this procedure, it does seem to work.

Now that I gotta remember, but again the problem is you have to wait for it tr drop below 80 degrees. Sometimes I have taken off and lost an engine in climb and I will continue with one engine while I wait for the EGT to drop and then restart it successfully and continue flight. I didn't know the magic number though .

 

Thanks for the info!!

 

But rule of thumb that I follow for all acft, load C172 (or in my case the default LJ) pull out mixture and start every payware add-on only in COLD & DARK except CS 75 which doesn't have that option or I haven't read the manual careful enough. For the MD, you have to set cold and dark for each and every livery is what I have noticed.

 

But I am glad you got it working and it's flyin good!!

When is your next Flight||VATSIM HitSquad Member, ZOA/ZAK/GANDER/P1

 

Link to comment
Share on other sites

Sean Hatfield 1165048
Posted
Posted
...bring the starter to maximum motoring, and wait for the EGT gauge to read less than 80 degrees. Then open the fuel valves. Now while I've had a few mishaps with this procedure, it does seem to work.

Now that I gotta remember, but again the problem is you have to wait for it tr drop below 80 degrees. Sometimes I have taken off and lost an engine in climb and I will continue with one engine while I wait for the EGT to drop and then restart it successfully and continue flight. I didn't know the magic number though .

 

Thanks for the info!!

 

But rule of thumb that I follow for all acft, load C172 (or in my case the default LJ) pull out mixture and start every payware add-on only in COLD & DARK except CS 75 which doesn't have that option or I haven't read the manual careful enough. For the MD, you have to set cold and dark for each and every livery is what I have noticed.

 

But I am glad you got it working and it's flyin good!!

 

Are you setting the EPR limiter to T/O thrust rating when you depart?

Link to comment
Share on other sites

 Share