Author Topic: 109 K-4 with 1.98ata  (Read 10495 times)

Offline Kev367th

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109 K-4 with 1.98ata
« on: August 06, 2005, 05:19:27 PM »
OK lets put this to rest once and for all.

I am using stuff from the proclaimed 109s expert own site - Kurfurst.

Olivier Lefebvre, noted authority on the BF 109, has stated:

AFAIK 1.98ata boost was cleared late February but it seems to have been slowly introduced into service, I suspect the adjustments needed on the engine and the change of sparkplugs type (supply problems ???) took longer than expected. From other documents I know that C3 and B4 had severe quality problems beginning in late 1944. While it was not much of a problem with low boost, it had some serious effect on higher boost, so it might also have slowed down the introduction of 1.98ata boost. At least DB documents underlined the need for cleaner fuels than those in use at that time. You can safely assume that by March 1945 1.98 ata boost was being introduced, unfortunately I do not have much details for April 1945, but I doubt it would have changed much, given the situation.


1) We can safely assume March 1945 (introduced only), more likely April 1945. OK lets go along with an assumption and not a FACT
.
2) Kurfurst states 79 serviceable K-4, OK give him the benefit of the doubt and assume (again) this was March/April 1945 and probably a best day figure.

3) We also have to assume that everyone of the 79 could use or be converted to use 1.98ata. Very very unlikely given Gernamys overall condition at the time.

4) End of war May 1945

So for a two month period (thats the longest time period possible allowing for ALL the assumptions to be correct) there 'may' have been some (probably a lot less than 79), if indeed any K-4 using 1.98ata.
That would make it if introduced one of, if not the rarest bird in the game, and hardly suitable for TOD.

AINT GONNA HAPPEN - Be happy with your 1.8ata K-4.
« Last Edit: August 06, 2005, 05:27:13 PM by Kev367th »
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Offline MiloMorai

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109 K-4 with 1.98ata
« Reply #1 on: August 06, 2005, 05:35:19 PM »
Now you have gone and done it Kev. :p :D

He did post the link in a threads he started awhile ago for his article on several forums including here. Every thread on those forums, except for one where it was ignored, were so sweet, NOT

Offline Kev367th

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109 K-4 with 1.98ata
« Reply #2 on: August 06, 2005, 06:11:10 PM »
Actaully as I said his data tends to be fairly accurate, its the interpretation and comparisons that are lacking and misleading.

i.e. He mentions perking of K-4, this is his reasoning

Because in 1944 K-4 outnumbered Spit 14 by
  • amount, that the Spit 14 should be perked at 1.5 times the K-4.

Great no problems with that, would put the K-4 at about 10 compared to the spit 14 (15 perk at moment)

BUT -
He uses that to justify a perk cost of a 1945 1.98ata K-4 which was much much lower in numbers compared to 1944 levels.
Assuming (again) ALL 79 K-4's were at 1.98ata even comparing them to 7 sqns (210 aircraft inc spares etc, 84 actually flying) of Spit 14 in 1944 shows how absurd that it is.
That would in fact make it RARER than a Spit 14 and would be perked higher accordingly.
But like I said thats assuming all 79 K-4 used 1.98ata and comparing it to Spit 14 1944 strengths, not March/April/May 1945 strengths.

A cost of 10 for a K-4 at 1.8ata is reasonable.
There will be no 1.98ata K-4.
« Last Edit: August 06, 2005, 06:14:09 PM by Kev367th »
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Offline Krusty

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109 K-4 with 1.98ata
« Reply #3 on: August 06, 2005, 06:23:42 PM »
I don't think it should be perked, but I think it needs to be de-rated. Sure there were TONS of logistical and technical problems facing the LW at the end of the war. Quality is going to suffer.

I think we need a slightly slower K-4 model. Reduce its speed a bit to reflect a less-than-optimum K-4, and then you don't need 2 gap-fillers between the G-6 and K-4. You only need the G14, NOT the G14 and a G10. By having a slightly slower K4 than what we have now, the K-4 can double as a G10 without giving the axis a large speed boost in any given setup/scenario.


The following is what I'd suggest
E4
E7  - new? (I'd like to see it)
F4
G2
G6
G14 - new?
K-4 (current G10 tweaked, slower)

That's better than the following, which I'd like to avoid:

E4
E7 - new?
F4
G2
G6
G14 - new?
G10 - new, almost identical in top speed to G14 but handles better at altitude
K-4 - super fast late war variant we have now

It reduces redundancy in the G14/G10/K4 set, and allows the K4 to play a part in more realistic setups.

Offline Kev367th

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109 K-4 with 1.98ata
« Reply #4 on: August 06, 2005, 06:38:07 PM »
As always Krusty - logical.

But - since when has logic ever played a part.
« Last Edit: August 06, 2005, 06:41:56 PM by Kev367th »
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Offline Krusty

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109 K-4 with 1.98ata
« Reply #5 on: August 06, 2005, 06:43:04 PM »
But.. um... I want that K-4 with the proposed .. um... /u234 rutsatz with .. um... the cowl guns replaced with MG151/20s and the gondolas carrying 30mms with 100 rounds each.... yeah... um..





(* ^^ okay a hint for those that can't guess, that's a JOKE!! ^^ *)

Offline Kev367th

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109 K-4 with 1.98ata
« Reply #6 on: August 06, 2005, 07:17:46 PM »
Lol, i'm sure kurfurst could use some data to prove it existed in the 1000's.

Seriously, very unlikely will be derated, so why not perked?

Great climb from sea level all the way up, good speed sea level and at alt, 1x30mm, 2x 15 (or 12 can't remember), +option of 2x20mm, 10 mins WEP

Only plane I can see close to being equal is the perked Spit 14, but the 14 has a few advantages so 10 perks for the K-4 seems reasonable.

Breakdown -
K-4 Climb and top speed
14 - guns and turn (although 1 30mm coke bottle can ruin your day, edge on guns goes to Spit I think)

Seem a fairly even match.
« Last Edit: August 06, 2005, 07:42:15 PM by Kev367th »
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Offline justin_g

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109 K-4 with 1.98ata
« Reply #7 on: August 07, 2005, 04:50:48 AM »
G-14, DB605AM: 413mph @ 16,400ft BUT - apparently most G-14 built had the ASM engine, which has similar performance to G-10(5mph diff.)
G-10, DB605DM: 428mph @ 24,600ft
K-4, DB605DB(1.8ata): 444mph @ 24,600ft

G-14 with the medium altitude engine covers for the many G-6 that would have been converted to MW50 in early '44.

G-10 covers for the 2,000 or so G-6/G-14 using the ASM engine from early '44.

Offline mora

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109 K-4 with 1.98ata
« Reply #8 on: August 07, 2005, 06:19:42 AM »
Why can't we just have higher boost variants from Spit's and 109's and what not, and just perk the hell out of them? What's wrong with adding more variants, especially when they reguire very little effort from HTC? They will be useful in late war events and CT setups.

Offline Kurfürst

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Re: 109 K-4 with 1.98ata
« Reply #9 on: August 07, 2005, 06:52:54 AM »
Quote
Originally posted by Kev367th
OK lets put this to rest once and for all.

I am using stuff from the proclaimed 109s expert own site - Kurfurst.
[/B]

I have never called myself a 109 expert, but I call Kev a liar.

Quote

Olivier Lefebvre, noted authority on the BF 109, has stated:

AFAIK 1.98ata boost was cleared late February but it seems to have been slowly introduced into service, I suspect the adjustments needed on the engine and the change of sparkplugs type (supply problems ???) took longer than expected. From other documents I know that C3 and B4 had severe quality problems beginning in late 1944. While it was not much of a problem with low boost, it had some serious effect on higher boost, so it might also have slowed down the introduction of 1.98ata boost. At least DB documents underlined the need for cleaner fuels than those in use at that time. You can safely assume that by March 1945 1.98 ata boost was being introduced, unfortunately I do not have much details for April 1945, but I doubt it would have changed much, given the situation.



1) We can safely assume March 1945 (introduced only), more likely April 1945. OK lets go along with an assumption and not a FACT
[/B]

What FACT? Kev`s, the liars 'facts'?

Well let`s see the facts :

- One Wing of 109K was operating on 1.98ata in January/February 1945, for operational trials, as noted in DB meetings.

- 1.98ata was cleared for the DB 605D engine of G-10 and K-4 in late February 1945, according to the French 109 researcher Olivier Lefebvre, aka butch2k.

- There`s written order from the OKL, dated 20th March 1945, noting 4 Fighter Wings from JG 27 and JG 53 to convert to 1.98ata.

- Olivier Lefebvre notes in agreement that this conversion took place.

- Alfred Price lists these four wings in a close date 2.5 weeks later, having 142 aircraft on strenght, out of which 79 were servicable at the time.

All facts...


Quote

2) Kurfurst states 79 serviceable K-4, OK give him the benefit of the doubt and assume (again) this was March/April 1945 and probably a best day figure.


Kev has read my site, it`s clearly states where the info comes from and what it`s about... and when the info refers to.

It was clearly stated that the unit strenghts were taken from Alfred Price (and not my data), and refer to 9th April 1945.
Both the date and source is given. Kev distorts these facts.

Quote

3) We also have to assume that everyone of the 79 could use or be converted to use 1.98ata. Very very unlikely given Gernamys overall condition at the time.


We don`t have to assume anything. You are assuming the conversion did not take place, against the written orders from the German high command.

It`s facts vs. your assumptions.


Quote

So for a two month period (thats the longest time period possible allowing for ALL the assumptions to be correct) there 'may' have been some (probably a lot less than 79), if indeed any K-4 using 1.98ata.
That would make it if introduced one of, if not the rarest bird in the game, and hardly suitable for TOD.


No, the rarest bird would be the MkXIV Spitfire at +21 lbs boost, which is the what Kev wants. There were only 60 planes maximum using that boost, from Jan/February 1945.

That`s fewer planes, and in a comparable period. I don`t see much difference between 100 Spits using high boost in the last four months of the war, and 142 109s using high boost in the last 2 months of the war.

Of course, Kev wants double standards.

He wants to have the rarest Spitfire on the best peformance, and at the same time, he refuses to have it`s equivalent 109 on it`s best performance.

It`s stinking of agenda. One that are interested in the true facts and not Kev`s lies should visit my site, the URL is in the sig.

We should either have perked 1.98ata 109K and +21 lbs SpitXIV on high boost, or just 1.8ata 109K and +18lbs MkXIV.
Not best vs. worst, which is what Kev asks for in a typical spitdweeb fashion.
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Offline Kurfürst

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109 K-4 with 1.98ata
« Reply #10 on: August 07, 2005, 06:55:14 AM »
Quote
Originally posted by mora
Why can't we just have higher boost variants from Spit's and 109's and what not, and just perk the hell out of them? What's wrong with adding more variants, especially when they reguire very little effort from HTC? They will be useful in late war events and CT setups.


100% agree, but I tell you what`s wrong with it : it would result in a balanced setup... Kev doesn`t wants historical or game balance. He wants his side having all the advantages, and the other side being forced to use the worser variants only.
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Offline Kurfürst

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109 K-4 with 1.98ata
« Reply #11 on: August 07, 2005, 07:03:26 AM »
A bit on why the 109K should not be a perked plane (though for higher powered 1.98ata versions, I think it could be perked).

It was not a rare plane, unlike the SpitXIV. In fact, it was a major version of the 109 in service in large numbers.

From : RL2III/1158


On 31 January 1945 the combat units of the Luftwaffe had the following strength in Bf109 types.  Included are all aircraft operational and non-operational at the time.

Bf109G1/5 : 0
Bf109G6 : 71
Bf109G14 and G14U4 : 431
Bf109G10, G10/U4 and G14/AS : 568
Bf109G10/R6 : 51
Bf109K4 : 314

Total : 1435 of Bf 109 types


One can see there were 314 109Ks with the frontline units, which is 25% of the total force, and there were 4 times as many 109K.

Considering G-10 and G-14/AS types are presented as one, it may be that the 109K was the second most numerous 109 next to the G-14.

Total production of the 109K amounted 1700 aircraft until the end of the war, 856 being completed until the end of 1944.

In comparision, around 800-900 SpitMkXIVs were produced until the end of the war.
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Offline Angus

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109 K-4 with 1.98ata
« Reply #12 on: August 07, 2005, 07:16:00 AM »
Tuhhh
"It was not a rare plane, unlike the SpitXIV. In fact, it was a major version of the 109 in service in large numbers. "
Yet on the 1st of January 1945, after scraping together almost every sevicable fighter, the once mighty LW amounted to less than a 1000 .
Same story as always, - the illusion that in 1945 the skies were filled with black-crossed aircraft running on uberboosts.

I'd take yer stats with a grain of salt, for what was sent in the air on that morning in Jan 1945 is a very well documented and absolute figure.
It was very interesting to carry out the flight trials at Rechlin with the Spitfire and the Hurricane. Both types are very simple to fly compared to our aircraft, and childishly easy to take-off and land. (Werner Mölders)

Offline Wotan

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109 K-4 with 1.98ata
« Reply #13 on: August 07, 2005, 08:27:05 AM »
Quote
G-14, DB605AM: 413mph @ 16,400ft BUT - apparently most G-14 built had the ASM engine, which has similar performance to G-10(5mph diff.)


Only about 1000 G-14s were equipped withthe DB605ASM.

This was posted over on Butchs forum in a thread entitled 'Aircraft Service dates' (or something similiar)

Quote
*109G-14 July 1944.
Adam

BF 109 G-14:
About 5500 made (abt. 1000 of which were G-14/AS versions)

G-14 entered service with II/JG 11 and Stab/JG 53 in July 1944.

Squadron Service Entry-date: July 1944 (limited numbers)

"Full deployment": August 1944
Kossu.

*109G-14/AS July 1944.
Adam

G-14/AS entered service with II/JG 27 and I/JG 77 in August 1944. (Prien & Rodeike)
Kossu.


The G-6/AS was produced in even fewer numbers...

Offline Furball

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Re: Re: 109 K-4 with 1.98ata
« Reply #14 on: August 07, 2005, 08:32:16 AM »
Quote
Originally posted by Kurfürst
We should either have perked 1.98ata 109K and +21 lbs SpitXIV on high boost, or just 1.8ata 109K and +18lbs MkXIV.
Not best vs. worst, which is what Kev asks for in a typical spitdweeb fashion.


'we'?

do you play this game?

(i honestly don't know - im not just taking the piss)
I am not ashamed to confess that I am ignorant of what I do not know.
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