As far as I understand the concept of DWC is that it "locks" the weather as being the same worldwide as the departure airport. Since I don't really like that (imagine flying from Athens to Helsinki how different the weather can be) I personally use REX only for its superb graphics, ASE for the weather (no DWC) and FSUIPC for wind smoothing.FSUIPC was my last purcahse between these three and was the final solution in getting rid of the S-turns (which by the way were the main reason for registering in this forum)...I'm not really a fan of constantly buying stuff but some basic things are pretty much necessary for enjoying simming at a minimum level.

Nope, you get it all wrong. DWC concept is to keep constant injections of current weather creating realistic winds. This mode has it's drawbacks thought, you will never see a weather front, or weather around you may almost instantly change from OVC to CLR, etc. I think that Jim can explain it all much better, just ask here or on HiFi forum.Regards,

He got the worldwide part right. As a way to make sure the correct weather is what you see, in DWC mode, the weather is the same for the entire planet. Which is why you get what Grzegorz mentioned, the lack of fronts, and the disipation of clouds. Changing dynamic slider can slow things down in the transitions.But to answer the OP, yes you need FSUIPC. It is a must have for FSX/9. It offers so much for the price. And for a bit more, you can get WideFS, which allows addons to work on a client PC, like a laptop. I don't have a single add-on program running on the FSX machine, it is all on my laptop, connecting either via Simconnect like ASE or the REX wx client, its own connection device like Aviliasoft EFB, or WideFS for FSC, FSFK, Topcat, Radar Contact, Squawkbox.

Which is better, REX Weather Engine or ASE? I'm asking because I have REX 2.0. Or are they different things? Do I have to use FSX in windowed mode, or does it allow fullscreen mode?Thanks

The REX 2.0 engine is actually very good I think. The thing with ASE is it may be a bit more accurate with its DWC mode, but it is also highly customizable. REX is real weather. ASE you can create a weather condition, save it, then apply it to a region, then create a new one, apply it to a region, and really create a wholly customized weather system. ASE is also highly compatible with a plethera of other addons, from FS Build, Aviliasoft EFB, Topcat, FSFK, all these programs can easily read ASE and use it for weather reports or generating data, so in short, your customized weather will appear in those reports.ASE also had the ability to fly in historical weather. Comes in handy when you are flying a flight, enjoy the weather you are seeing, and wish to fly that flight in those conditions again, (either by choice or dare I say you suffered a CTD before wheels stop).

Hi had probs like everyone else about wind shift and speed fluctuation, etc since getting ase now getting none at all as yet only tried one flight so far which looks good so hopefully purchasing ase solved my probs in this hopefully. using ase as my weather progrmne and rex2 as my textures etc also got fsuipc as well havnt yet to make any changes in this yet since ase does it for the wind smoothing etc

As far as I understand the concept of DWC is that it "locks" the weather as being the same worldwide as the departure airport. Since I don't really like that (imagine flying from Athens to Helsinki how different the weather can be) I personally use REX only for its superb graphics, ASE for the weather (no DWC) and FSUIPC for wind smoothing.FSUIPC was my last purcahse between these three and was the final solution in getting rid of the S-turns (which by the way were the main reason for registering in this forum)...I'm not really a fan of constantly buying stuff but some basic things are pretty much necessary for enjoying simming at a minimum level.

No, that is not quite right. DWC does set all airports the same, BUT as the data changes along your route you WILL experience these changes. You will NOT have the same weather for your entire flight!

My only re-occurring grief with FSX is the wind shift I get on approach to KSFO's 28s. Directly over the 28 threshold I'll most always experience a wind shift that can be as much as 180 degrees, as you can imagine this can make for quite an exciting landing. Anyway, I'm getting tired of fighting the noted condition and would like to solve the problem with a single purchase -ASE or FSPUIC? I'm a MD11 pilot that does mostly short haul flights based out of SFO and I use Rex 2.0.

No, that is not quite right. DWC does set all airports the same, BUT as the data changes along your route you WILL experience these changes. You will NOT have the same weather for your entire flight!

Got it now people, thanks for making it clear for me! :( In any case I have FSUIPC already so it was more like a theoretical question for me...

Fixed to some degree with ASE used with FSX which can require Global Weather mode for DWC smoothing means that the global environment is what is at your aircraft location. This can confuse AI patterns as you approach destination in that at the time approach assigns your runway it may not conform to the weather as you close into the airport. By using FSUIPC wind smoothing you can avoid DWC and global weather so your destination weather will be as predicted or downloaded, not at your current aircraft location.I use in FS9 AS 6.5 without DWC and weather and AI patterns are stable at destination. For the record I choose to download the days weather archive closest to the time of the flight so the weather matches the FS time of day of the saved flight I loaded. This allows for weather variation due to solar effects. I assume the same can be done with ASE.If you are using real time flight and use FS system time then downloaded real time weather might be more appropriate. I hope you have a good copilot for extremely long oceanic crossings. It depends if you are present for both departure and destination.

I use REX 2.0 for textures and ASE for the weather engine. I don't use DWC in ASE. Options I have in FSUIPC to help with wind smoothing and such, I don't remember offhand and I'm not in front of the PC, but I believe I have limited wind changes to 1 kt or direction of change for every 5 seconds (or is it 8? I forget.) It seems rather 'harsh' but it works amazingly well, and any faster changes will often overspeed or stall you when you're high altitude with a small flight envelope. I'd rather have my winds end up slightly inaccurate due to a slow change than have the plane do something annoying because of broken winds. I also limit temperature changes to something similar and barometric pressure as wel. ASE will sometimes send (probably because it gets from its sources) bogus temperature or pressure data, which can kill the plane as well. I'm not such a stickler for realism that I need 100% accurate weather at the expense of a functional flightsim. If anyone wants, I can check FSUIPC later and post my settings.-stefan

Hi sent u a pm on how u use rex2 texture while using ase as the weather engine

Fixed to some degree with ASE used with FSX which can require Global Weather mode for DWC smoothing means that the global environment is what is at your aircraft location. This can confuse AI patterns as you approach destination in that at the time approach assigns your runway it may not conform to the weather as you close into the airport. By using FSUIPC wind smoothing you can avoid DWC and global weather so your destination weather will be as predicted or downloaded, not at your current aircraft location.I use in FS9 AS 6.5 without DWC and weather and AI patterns are stable at destination. For the record I choose to download the days weather archive closest to the time of the flight so the weather matches the FS time of day of the saved flight I loaded. This allows for weather variation due to solar effects. I assume the same can be done with ASE.If you are using real time flight and use FS system time then downloaded real time weather might be more appropriate. I hope you have a good copilot for extremely long oceanic crossings. It depends if you are present for both departure and destination.

I've been using ASE with Smooth Cloud Transitions and FSUIPC for the wind and baro smoothing for the last 8 months or so and i've had good weather experiences using it, as well as AI seem to behave better on my arrival. I know a lot of people like using DWC for flying airliners because the winds might be more accurate and easier to judge fuel, but I always take x-amount extra + X-amount for diversion, but since its a sim I never divert due to bad weather, so I always arrive with ample fuel anyways.I own REX as well but in the few years I have owned it I have never even tried the weather engine in it since I already have ASE setup on my internet computer and get the weather via the network and simconnect.Sean Campbell