Bf 110 cockpit, Wahlschalter and bomb load.

[Kodoss]

Hmm, from what I have read now the Rost 24 SD2 and the Einhangrost ER 4 ETC 50 for the BF 110 didn't showed up until march/april 1941.
So no SD 2 and SD 50 for Bf 110 in the Battle of Britain.

But it looks like the Bf 109 Fighter/bomber could carry SD 50 on a ETC 50 rack. Maybe also SD 2.
@csThor: can you confirm this through your documents of ErprGr 210?

[robtek]

I only know that SD2 were used during the BoB.

[5./JG27.Farber]

Quick look through my sources tonight but cant remember where I saw it... A quick look through my aircraft manuals shows a 109 equipped with SD2 but not the model or year...

Pretty sure I saw something here about it but can spot it imeadiatly:

http://forum.netweather.tv/topic/631...weather-diary/

Ill keep looking tomorrow.



My farther, born in 1951 found a SD2 hanging in a tree near Sheffield... Derbyshire I think, proberbly near Dronfield, as they roamed quite far as kids in the woods... I will ask him about it but obviously this was well after the war...

[Varrattu]

Here you find some information concerning the influence of bomb loads on the performance values of full equipped BF110's:

http://www.beim-zeugmeister.de/zeugm....php?id=45&L=1

~S~

[5./JG27.Farber]

Originally Posted by 5./JG27.Farber

My farther, born in 1951 found a SD2 hanging in a tree near Sheffield... Derbyshire I think, proberbly near Dronfield, as they roamed quite far as kids in the woods... I will ask him about it but obviously this was well after the war...

He said it was when he was 9 or 10 years old. Sheffield is built on 7 hills, so at the back of his row of terreced houses (in England terraced house where built around 1900 as a general rule) was a wall of about 8 feet, behind the wall was a big drop with a steep 30 degree slope. They would climb over the wall drop onto a ledge slide down the slope onto another ledge and drop off on some wooded waste ground. Nobody went there as the land was not used for anything and adults could not get, nor wanted to, go down there. Anyway there was a butterfly bomb hanging in a tree. So if this is 1961/2 in a city and there is a bomb hanging in a tree! I wonder when it was dropped? When did the LW stop bombing Northern cities? The longest it could of been there was 1940 so thats 20 years! He thinks it must have been defective and I would agree. Anyway some how (he forgets how) the police were informed and it was disposed of.


Anyway still looking through my manuals etc and I know ive seen a picture of the SD2 on both the 109 and 110 but need to find the proof to check the year.... This is annoying me now.

[Kodoss]

I looked into the book "Die deutsche Abwurfmunition bis 1945".

It states that the SD-2 was first used in the operation "Opernball" at the 29. october 1940.
A Rotte Dornier Do 17 of the 8./KG 76 attacked the 17 parked Bristol Blenheim at the airfield Wattisham.

Other small bombs which has been used from the start of the war 1939 were the B-1 E, B-1,3 E, SC-10/SD-10, SC-50 and SD-50.

It is also interesting to read that the production of bombs were behind the use.
At the end of the poland campaign were mostly all 20.000 bombs of the 50kg and 250kg weight used up.

[JG53Frankyboy]

as thor already mentioned, i seriously doubt that the 109 fighterbombers of the 3./ErprGrp210 and II/LG2 and the 110 fighterbombers of 1.&2./ErprGrp210 used SD2 during the summer over britain! Sure not the later fighterbombersquadrons of the JGs.......

During the BoB it was the KGs that used them - for them it would be a nice addition

For SD2 on fighterbombers we have to wait for this 'BoM' thing, i hope actually

[Kodoss]

Originally Posted by robtek

I only know that SD2 were used during the BoB.

SD 2 butterfly bombs were also used in poland.
The question is were they or SD 50 carried/optional by Bf 109 in the BoB.

@csThor: Regarding the Bf 110 bomb load: I think the 2x SD 1000 is just the stated optional limit for the A/C structure. Like stating that you can carry max. 200kg of cargo + 5 persons in your car manual.

I also found a page of the manual which states the max load and load options for 3 different types of Bf 110 C fighter/bomber regarding their undercarriage.

I will post it here as soon as I find it again.

@Varrattu interesting find. What also is interesting is the mentioned 12:40 pitch. I have seen the same pitch mentioned by the D-series, but also by C-series? Will look into that later.

[Kodoss]

Found it.

bombload - breaking.jpg

First position [a] states normal C-1 to C-4 variants (without bombs and additional fuel tanks)
Second position [b] states variants with only strengthend main gear and not strengthend tailwheel.
Third position [c] states variants with strengthend main gear and strengthend tail wheel.

I think air resistance for propeller by standing A/C with 12:00 pitch is not modelled jet.
See 9. on the left page.
Will check it now.

[Kodoss]

I think air resistance for propeller by standing A/C with 12:00 pitch is not modelled jet.
See 9. on the left page.

Looks like it is modelled. But 25-75 rpm to low after warming up to 50°C oil and 60-70°C water temp.
I only reached 2175 rpm on both engines, but should reach 2200-2250 rpm.
so ~ 50 rpm are missing.
For everyone who want to test it too, slowly warm up with 800 rpm and pitch 12:00 to:
min oil temp: 40°C
max water temp: 80°C
Set trim to Hecklastig (heavy tail)
Pull your stick a little bit (or eat the grass ) and push the throttle to 1,3 ata and keep it (not longer than 5 min).
Check if 2200-2250 is reached.