radiators have no influence on speed

[Flanker35M]

S!

Well, Helmut Lipfert said the radiator flaps on his Bf109G slowed the plane down as much as 40-60km/h and used them sometimes to avoid passing a slower target. Anecdotal sure, but seems that the radiators would cause some extra drag thus less speed.

[ACE-OF-ACES]

Originally Posted by Flanker35M

S!

Well, Helmut Lipfert said the radiator flaps on his Bf109G slowed the plane down as much as 40-60km/h and used them sometimes to avoid passing a slower target. Anecdotal sure, but seems that the radiators would cause some extra drag thus less speed.

Just to be clear

I am not saying open rads should not cause more drag, and thus less speed

Far from!

All I am saying is that without logging the data, the sim pilot alone can cause a 40-60kph diff in speed. Thus the 'thing' you are looking for is in the noise of the human error.

[TomcatViP]

Hi Dav,

I don't see the same here. Nearly closing fully the rads of my 109 is what give me the 500-kph.

Did you close the oil rad as well and fly the ball centered ? This does impact the speed by raising the drag dramatically IMHO

S!

[David198502]

Originally Posted by TomcatViP

Hi Dav,

I don't see the same here. Nearly closing fully the rads of my 109 is what give me the 500-kph.

Did you close the oil rad as well and fly the ball centered ? This does impact the speed by raising the drag dramatically IMHO

S!

well yes i have the oil rads as much closed as possible too.regarding the ball centered...no
i dont have rudder pedals yet, so therefore i have the rudder set on a hatswitch on my joystick, which is not really precise, because its devided into steps.
but without changing anything during flight, except opening the water rads, the speed will not decrease.and i zoomed into the gauges to look if it makes a minor difference.but i just couldnt find any in speed.

oh and ace i will not argue with you...you dont have to believe me...you can try it by yourself if you want to, and if you want you can call it pilot error,...i dont care.

[KG26_Alpha]

Providing a track is usually the best way to observe bugs claimed by pilots.

Also "usually" some one will try to replicate your observations and confirm it.

looks like this threads all about standing around puffing on pipes drinking tea and generally hmming and ahhhing.



Bring forth a chart monkey please...............



.

[ACE-OF-ACES]

Originally Posted by KG26_Alpha

Providing a track is usually the best way to observe bugs claimed by pilots.

Also "usually" some one will try to replicate your observations and confirm it.

looks like this threads all about standing around puffing on pipes drinking tea and generally hmming and ahhhing.

Agreed, a track file is the minimum thing that should be provided when making a claim of an FM error. In that upon observing said track 9 out of 10 can be debunked within the first min of viewing, as in you can see the sim test pilot made a error

Originally Posted by KG26_Alpha

Bring forth a chart monkey please................

Agreed! Log the data as you fly, you will be amazed at the errors you can make!

[BP_Tailspin]

This place never ceases to entertain me …

Originally Posted by David198502

i surprisingly just found out that the rads settings of the 109 have no impact on speed at all...

Should they have an impact on speed?

Originally Posted by David198502

normally i fly with them as much closed as possible, to avoid engine overheating, while maintaining the minimum air resistance...however i found out that one can leave the rads fully open and still reach and hold the top speed in level flight....

Keeping your 109 cool sounds good to me and without a performance hit is even better.

Originally Posted by David198502

that should be looked into by the devs,

I think there busy trying to make the “game” playable.

Originally Posted by David198502

cause i would assume that a fully opened radiator should cause enough surface to slow the aircraft down...

Key word here is “assume”

Originally Posted by David198502

i have to say that this fact is extremely disappointing,

Fact? Please quote your aeronautical engineering data.

Originally Posted by David198502

as CEM and FMs are supposed to be the strengths of this game(sim?)

Key word here is “game” but maybe it’s more of a “sim” than we think. The P51 Mustang’s radiator has a low/no drag design.

“The duct for the radiator was designed to slow the incoming air down. The air could then absorb more heat from the radiator, but the radiator needed to be made larger because of the slower air velocity, which meant installation in the rear fuselage. After the air passed through the radiator, it expanded due to the heat and was accelerated out the back, producing some thrust to counter the drag the radiator caused.”

I don't have the time or energy to do the research the 109’s cooling but here’s some cool (pun intended) data about the pesky little 109 I did find. Instead of beating up the devs … research it and present the data to the devs.

http://www.wwiiaircraftperformance.o...09g-14026.html

[ACE-OF-ACES]

First thing to note..

Tom does notice a difference
David does NOT notice a difference

So who should we belive?

Answer, neither!

Why?

For all the reasons I have already stated, and the fact that some are seeing a difference and some are not only reinforces the need to log your data during flight

Originally Posted by David198502

well yes i have the oil rads as much closed as possible too. regarding the ball centered...no

Having the ball centered is one of those 'pilot errors' I was referring to.. Little things like this can add up

Originally Posted by David198502

i don't have rudder pedals yet, so therefore i have the rudder set on a hatswitch on my joystick, which is not really precise, because its devided into steps.

Keynote.. not really precise

Originally Posted by David198502

but without changing anything during flight, except opening the water rads, the speed will not decrease.

Its the things your changing that you don't realize your changing that can make the difference, as noted in the Ki61 case, most sim pilots are not holding their altitude as well as they think they are.

Originally Posted by David198502

and i zoomed into the gauges to look if it makes a minor difference. but i just couldn't find any in speed.

Which goes back to that resolution thing I mentioned

Originally Posted by David198502

oh and ace i will not argue with you...you don't have to believe me...

Who is arguing?

And I am not agreeing with you or disagreeing with you. I am simply pointing out the FACT that the error your looking for may be in your nearest mirror

Originally Posted by David198502

you can try it by yourself if you want to, and if you want you can call it pilot error,...i don't care.

And I don't care that you don't care!

Oh, and I am still waiting on your 'data' as in how much are we talking about here?

10?
20?
30?
40?

If you don't know in advance how big of a difference you are suppose to see, than how will you know it when you see it!

And you should take pause here and consider the fact that Tom 'is' seeing a difference..

So with that said..

Are you calling Tom a liar?

[David198502]

Originally Posted by TomcatViP

Hi Dav,

I don't see the same here. Nearly closing fully the rads of my 109 is what give me the 500-kph.

Did you close the oil rad as well and fly the ball centered ? This does impact the speed by raising the drag dramatically IMHO

S!

mh well i dont get the 109s to reach 500kph in level flight.except if i push the nose slightly down for some seconds and level out at 500kph.but i cannot maintain that speed.it will slowly decrease again to 450kph if i dont loose altitude.

[6S.Tamat]

so actually the fact that an hurricane is without really a big problem attached to the tail of an emil is because the emil pilots are not good pilots.
Sure.
I always knew that hopping on an hurricane i would have been a better pilot.