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Author Topic: 109-g14  (Read 1326 times)

Offline Wotan

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« Reply #15 on: August 10, 2005, 05:06:28 AM »
I posted grapphs from Il2/FBs G-6 / G-14 / G-6/AS (really a G-14/AS), G-10, K-4 in this thread...

Of course these were just to give a general idea of each of those 109s...

Spits anounced, what about the 109s?

scroll about 2/3rds the way down...

I don't know why these guys start 10 threads all about the same thing...
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Offline Kev367th

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« Reply #16 on: August 10, 2005, 05:49:41 AM »
How about I asked a specific question in the original post?

i.e. what is a good Spit matchup for a G14

Since then the thread has wandered a little into why they should keep the G10.
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Offline justin_g

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« Reply #17 on: August 10, 2005, 05:52:44 AM »
Unfortunately IL2:FB has the critical altitudes wrong, with all of the 109's reaching top speed at 6km?! :confused:
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Offline Wotan

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« Reply #18 on: August 10, 2005, 06:26:17 AM »
Only those planes running at MAX (110% + MW-50) show a critical alt at 6k. While this maybe arbitrary the SC (depending on the plane) is already losing power anywhere from 5500-6000m.

At normal power you see there are differences in FTH.

As I said I posted these only to give a general idea of relative performance between those types. IL2 compare (where those charts come from) isn't 100% accurate as well and are simplified to reflect AI behavior rather actual in game performance...
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Offline justin_g

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« Reply #19 on: August 10, 2005, 07:07:54 AM »
Quote
Originally posted by Kev367th
How about I asked a specific question in the original post?

i.e. what is a good Spit matchup for a G14

Since then the thread has wandered a little into why they should keep the G10.


Same graph, with a couple of Merlin 66 Spitfires flight tested at +25lbs shown also.

Notes:

1. Lime Green line for LF.VIII JF.275 @ +18lbs, is very close to "official" LF.VIII top speed of 404mph @ 21,000ft.

2. Purple line for LF.IX JL.165 @ +25lbs - this particular aircraft was noted during flight testing to have lower performance than other LF.IX previously tested at the same facility.

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Offline Kev367th

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« Reply #20 on: August 10, 2005, 07:41:58 AM »
Wierd,
Why would a heavier LF VIII with the same motor (Merlin 66) and boost as an LF IX be so much faster.
Surely a retractible tailwheel didn't make that much difference (15mph+ @ 20k)?
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Offline justin_g

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« Reply #21 on: August 10, 2005, 08:01:28 AM »
IMO, it's because JL.165 was a dog! :D
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Offline 2Hawks

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109-g14
« Reply #22 on: August 10, 2005, 01:38:31 PM »
Quote
Originally posted by Kev367th
Wierd,
Why would a heavier LF VIII with the same motor (Merlin 66) and boost as an LF IX be so much faster.
Surely a retractible tailwheel didn't make that much difference (15mph+ @ 20k)?


Take a castered wheel about the same size, get going down the freeway at about 100+ if your car can do it. Then stick the wheel and strut out the window and see how much force is required to keep it in your hands.

Waxing a plane after a good wash was rumored to yeild a few extra knots in the air, so I can well imagine sticking such a drag on the very rear of the plane would slow it a lot.


Btw, You might want to buy a bit more insurance before you attempt this experiment... :)

I am not responsible for any injuries you may incur or cause. :)

Dan.
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Offline Kev367th

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« Reply #23 on: August 10, 2005, 02:45:41 PM »
Quote
Originally posted by 2Hawks
Take a castered wheel about the same size, get going down the freeway at about 100+ if your car can do it. Then stick the wheel and strut out the window and see how much force is required to keep it in your hands.

Waxing a plane after a good wash was rumored to yeild a few extra knots in the air, so I can well imagine sticking such a drag on the very rear of the plane would slow it a lot.


Btw, You might want to buy a bit more insurance before you attempt this experiment... :)

I am not responsible for any injuries you may incur or cause. :)

Dan.


Lol just as well you got the disclaimer in, was hunting around for a castered wheel, I'll give it a miss now.

Oh, I understand drag etc, but to use your example.
Take the same car make it heavier by adding 30% more fuel and see how much it goes
Will have to dig into this further.
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Offline Bronk

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« Reply #24 on: August 10, 2005, 03:04:24 PM »
Quote
Originally posted by Kev367th
Lol just as well you got the disclaimer in, was hunting around for a castered wheel, I'll give it a miss now.

Oh, I understand drag etc, but to use your example.
Take the same car make it heavier by adding 30% more fuel and see how much it goes
Will have to dig into this further.



KEV wouldn't the car just take longer to get to speed not go slower ?  



Bronk
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Offline Kev367th

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« Reply #25 on: August 10, 2005, 03:25:45 PM »
Heavier car will take longer to get to its maximum speed yes.

Lets take the weight thing to the extreme -
What would have a higher top speed?
a) A 2litre Ford weighing 200lbs
or
b) A 2 litre Ford weighing 200000lbs

Granted extreme, but shows the gist of what I'm saying.

Think of Formula 1 - Always trying to reduce weight to gain not only acceleration but increased top speed.
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Offline Bronk

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« Reply #26 on: August 10, 2005, 03:34:42 PM »
OK but you said 30%. Say you take a 3200 lb ford add the 30%[960lbs] I'd bet you would not see a big diff in top speed. BEcause that would just be the diff of one passenger and 5 with a trunk full of luggage.


Bronk
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Offline MiloMorai

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« Reply #27 on: August 10, 2005, 03:40:01 PM »
Quote
Originally posted by Bronk
OK but you said 30%. Say you take a 3200 lb ford add the 30%[960lbs] I'd bet you would not see a big diff in top speed. BEcause that would just be the diff of one passenger and 5 with a trunk full of luggage.
Bronk


Ask a semi driver what he can do with no load and what he can do with a full load.
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Offline Kev367th

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« Reply #28 on: August 10, 2005, 03:44:07 PM »
I know, I did say it was an extreme example :)


Would depend I suppose on what give more advantage -
Spit IX with 35 less gallons and a fixed tailwheel

or

Spit VIII with 35 more gallons and a retractible tail wheel.

Think of it this way at equal weights the VIII should be a little faster due to less drag.

Maybe the retractible tailwheel makes more of a difference that I thought it would.
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Offline Bronk

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« Reply #29 on: August 10, 2005, 03:59:20 PM »
I'll tke the VIII i can always take less fuel.


Bronk
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