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#2896571 - 11/07/09 12:26 PM DR1 stalling
Morgans_Raiders Offline
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Registered: 07/28/09
Posts: 15
I've had quite a few instances during dogfights where the DR1 stalled and I couldn't restart it. Is preventing this a matter of adjusting the fuel mixture after awhile or minding heavy-handedness on the stick or simply the nature of the aircraft or something else?

I never noticed this on any other planes.

Thanks in advance for any thoughts.
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#2896581 - 11/07/09 01:08 PM Re: DR1 stalling [Re: Morgans_Raiders]
RedVonHammer Offline
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Registered: 01/05/07
Posts: 188
Loc: Norway
Hi Morgans_Raiders

The DR.1 can be quite the rascal, at times maybe even more so than the Camel.

The engine stall happens either when you overrev the engine during a dive, easy to forget in a intense fight. Whenever you dive, blip the engine, dont let it reach high revs for long (Meaning over a second.) Basically when engine goes over the usual RPM you hear when mixture is optimally set and you are climbing, you have to reduce rpm smile

Or it can happen because the engine reaches so low rpm that it just stops, when the UR.II first stops, chances are 99 percent that you wont be able to start it again. Forexample during a dogfight, people tend to forget to adjust mixture. Maybe it`s too lean or too thick and on top of that doing a high G maneuver (Hard time for fuel to reach engine.)

So keep a.. listenful ear to those revs! smile


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#2896596 - 11/07/09 01:44 PM Re: DR1 stalling [Re: RedVonHammer]
RocketDog Offline
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Registered: 05/20/03
Posts: 492
Loc: Bath, England
The Dr I engine is quite fragile and is the only engine that can be damaged by rapid cooling in long dives. It's definitely worth flying it a bit with the easy guages enabled to get a feel for the heat management needed and the rpm limits. Otherwise, with no temperature guage on board, you can wreck a lot of engines before you work it out.

I suspect the engine is actually modelled as more fragile than in real life. At medium to high altitude it is very difficult to keep the temperature within limits during descents.

Cheers,

RD


Edited by RocketDog (11/07/09 01:45 PM)
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#2896630 - 11/07/09 02:52 PM Re: DR1 stalling [Re: RocketDog]
Morgans_Raiders Offline
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Registered: 07/28/09
Posts: 15
Thanks people for the quick responses. I did notice that it happened alot more when I was in scenarios at higher altitudes, so I bet you're spot on with your analysis.

Lovely...as if flying and aiming weren't hard enough... smile
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#2896633 - 11/07/09 02:55 PM Re: DR1 stalling [Re: RocketDog]
Pooch Offline
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Registered: 04/11/02
Posts: 1576
Loc: Keller, TX
Morgan, FYI. In aviation circles, a stall is a maneuver where your wings lose lift and...well, you start dropping out of the sky. Not engine related.
Having your engine cut out, though, is usually related to all of the things mentioned above. All of the engines in RoF are prone to these cuttouts and I'm surprised that the Tripe is the first one with which you've experienced it.
With the liquid cooled engines you need to watch you radiator shutters. If you leave them open during a long dive, you freeze your engine, and that's it, brother. The prop stops, and suddenly there's no more loud noise in your headsets!
The most trouble free engine I've flown , so far in the sim, is in the Nieuport 28. I don't recall it ever giving out on me.
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#2896672 - 11/07/09 04:21 PM Re: DR1 stalling [Re: Pooch]
Morgans_Raiders Offline
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Registered: 07/28/09
Posts: 15
Pooch, my bad on the "stall" symantics...didn't even think about that when I typed it, even though I'm familiar with the concept.

I'll pay attention to the all the suggestions offered...I'm sure it will help! Thanks again.
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#2896761 - 11/07/09 08:58 PM Re: DR1 stalling [Re: Morgans_Raiders]
BlueRaven Online   content
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Registered: 07/11/09
Posts: 338
Loc: Oklahoma
When I take people flying they nearly always ask what happens if it stalls, and at first I used to start to explain a wing stalling, then I realized everyone was asking about the engine. So now I explain it by reaching up and chopping the throttle, and say. "This happens"

A good way to come down in the Dr1 at full power is kind of a weird spin that it will do. You can get it into kind of a tight skidding descending turn at full power. Not really a spin, not really a spiral, but it descends nice and quick without over cooling or over revving the engine. Also super easy to get out of.

The N28 does have one tough engine.

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#2896858 - 11/08/09 06:39 AM Re: DR1 stalling [Re: BlueRaven]
Mogster Offline
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Registered: 01/08/02
Posts: 4975
Loc: England
The engine dynamics in ROF don't seem to make a lot of sense at the moment. Some aircraft have fragile engines whilst others with the same or very similar powerplants have no durability issues.

The over rev at idle thing remains odd, Neoqb haven't changed it so they must think its correct.
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#2897268 - 11/08/09 09:22 PM Re: DR1 stalling [Re: Mogster]
Bleddyn Offline
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Registered: 07/14/09
Posts: 235
Loc: Vancouver, BC
Originally Posted By: Mogster
Some aircraft have fragile engines whilst others with the same or very similar powerplants have no durability issues.


The only engine that is in more then one plane in RoF is the Mercedes D.IIIa which is in all German planes other then the Dr.I. I have found all Mercedes powered planes to be durable. The only time we have "similar" engines is the Hispano Souiza engines of the SPAD and Dolphin, which are both durable. There is also the Gnome 9s of the Noops in which the later version is more durable, which seems proper.

I don't think there is an issue with "same or very similar" engines showing different durability.
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#2897277 - 11/08/09 09:38 PM Re: DR1 stalling [Re: Bleddyn]
BlueRaven Online   content
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Registered: 07/11/09
Posts: 338
Loc: Oklahoma
Originally Posted By: Bleddyn
Originally Posted By: Mogster
Some aircraft have fragile engines whilst others with the same or very similar powerplants have no durability issues.


The only engine that is in more then one plane in RoF is the Mercedes D.IIIa which is in all German planes other then the Dr.I. I have found all Mercedes powered planes to be durable. The only time we have "similar" engines is the Hispano Souiza engines of the SPAD and Dolphin, which are both durable. There is also the Gnome 9s of the Noops in which the later version is more durable, which seems proper.

I don't think there is an issue with "same or very similar" engines showing different durability.


All of the Merc engines are pretty tough, but some over rev at idle, and some don't, so there is a difference between identical engines.

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