It seems to be working now, I'm not sure what was going on but I exited out and selected a different cub and it worked out fine, I shut the engine off, set all controls to off and then redid the startup procedure and it started right up so I don't know what was going on.

Maybe you can tell me how to turn on V-sync though?

Nope, now it's not working again and I keeping getting a "please restart FSX" dialog in red on screen.

Also it seems like my controls sometimes just get disabled somehow when I start a free flight and I have to end the flight and restart to get them to work again.

Oh forgot to answer your question, I'm using the A2A cub and the accusim expansion, I have acceleration too.

My question about whether you have Acceleration installed was actually so I could know if you are updated to FSX SP2. Acceleration automatically installs the service packs' material, which is necessary for the A2A aircraft to work correctly. You should be good there; I don't think this is the source of your problem.

First, be sure that you have the realism settings marked exactly like the Cub's instructions suggest, especially the part about disabling the automixture. The AccuSim aircraft bypass a lot of the stock FSX coding and with some of the AccuSim planes the engines will wheeze and pour smoke and even catch fire if you leave the automatic mixture enabled.

The AccuSim aircraft have persistent maintenance states between flights; if you broke your engine early on the plane will still be broken the next time you load it. To fix this, open the Maintenance Hangar panel (Shift+7) and click the overhaul button. That should reset your plane to a 'like new' condition.

Next, make sure you have gas in the tank. I think the load manager panel is Shift+3. I don't know why you'd have an empty gas tank so soon but this is an easy thing to eliminate as a problem so you might as well just look.

If the above conditions are met (Acceleration installed, realism settings not using automixture, the engine is overhauled and in good order, there is gas is in the tank) you should at least be able to autostart the aircraft. If the autostart (Control+E) doesn't fire up the plane, try switching to a stock plane and then back to the A2A Cub.

By the way, there is a 1.1 update patch for the Cub. If you haven't downloaded it yet, go to the A2A Simulations forum.

Erm, I just read this part. It seems like a larger issue is going on and FSX is not playing nice with your computer. I don't know what is causing this.

Okay so I figured out what was wrong, I forgot about the deteriorating engine part so I apparently did something wrong earlier on that damaged the engine and didn't know I could reset it in the Shift+7 menu; now that I have it starts up fine so problem fixed there. (I see you mentioned that in your post)

The error I'm getting reads "SimConnect has encountered an error, please restart FSX" It only seems to happen after I load into free flight multiple times in a row and after I restart all is well. It also seems that when this error happens it causes my controls to cease functioning, atleast the last time it happened it did.

Another question, are any of the default FSX planes considered realistic? I've certainly never flown before so I can't say definitively but everything from the stock game I've flown seems really weirdly floaty, the Cub is able to go into a steep climb right after take off and recover no problem like I've seen a Super cub do in videos and when I first loaded it up I nearly passed out laughing at how ugly the stock cub is compared to the A2A cub.

As I understand it, SimConnect is Microsoft's own interface that allows other developers to 'plug in' to FSX and fully use its features. See this thread about 'SimConnect Error' and the A2A Cub.

I can't speak to the realism of any of the FSX planes as I've never piloted a real aircraft either. I do agree that the stock Cub has an ugly interior and that it seems to have a questionable flight model.

It's too bad the A2A cub doesn't have cockpit shadows

btw.

there is a trick to avoid strange problems especially with complex A/C:

Choose one of the default A/C f.e. the Cessna, and start a free flight, bring A/C to the wanted condition f.e. cold and dark. Then save this flight as the default flight.

When you want to fly your addon A/C, load the new default flight first and do flight planning from within the flight, read when 3D has loaded. Then choose your addon A/C.