Junkers F.13

[rossm]

I have the landplane version of the kit and want to model G-AAGU as operated out of Croydon in the mid 30s. The photo I have shows an enclosed - or probably partially enclosed - cockpit as opposed to the simple windscreens in the kit. Does anyone know whether it was a fully enclosed cockpit - it still has the curved sides which makes me suspect it was still open at the side?

Thanks in advance,

Ross

[Dave Fleming]

THis could be one of two (G-AAGU or G-AAZK)

http://spitfirespares.com/SPITFIRESPARES.C...01/IMG_0134.jpg

Both were F.13ge.

My suspicion is that it was open at each end (Looks a fairly simple shape as well - IIRC there was an article on ARC on building a Turkish F13 where the modeller had created the canopy.)

I'll have adig in my notes on the F13. I seem to recall the F.13g having a longer fuselage.

EDIT - Notes from an old Air Enthusiast article say 'semi-enclosed canopy.

Edited February 10, 2012 by Dave Fleming

[little-cars]

I know some of the late F13's were enclosed.

I assume they back engineered the cockpit used on some 33/34's.

[CarLos]

If it is a F13ge it has indeed a longer fuselage, 10.50m against 9.60, aside from a different fin and rudder. See the Hugo Junkers Home Page here.

Also one edition of the Revell kit had the back fuselage corrugations parallel to the lower fuselage edge instead of parallel to the rear window horizontal edges.

[Test Graham]

I understand that the Revell F-13 has the larger wing of a very late example, whereas most had shorter wings with more prominent ailerons extending beyond the trailing edge. Supposedly this was because it is based upon a museum example that was a hybrid of two different variants. However, the differing shapes of the F-13 does not seem to be very well covered in sources I can find, which is rather sad for such a significant aircraft.

[Dave Fleming]

If it is a F13ge it has indeed a longer fuselage, 10.50m against 9.60, aside from a different fin and rudder. See the Hugo Junkers Home Page here.

Soenke Schulz on WoP was of the opinion the 10.50 fuselage did not exist:

When it comes to documentation, the military guys always seem to be ahead of the civilian ones. Helmut Stützer in his book "Die deutschen Militärflugzeuge 1919-1934" lists up every german airplane even remotely usable for military purposes. The technical data for the aircraft are listed by their construction years.

The results for the F 13 are as follows:

- Only the very first F 13s, built in 1919 had the short wings. All F 13s built from 1920 onwards had a wingspan of 17,75 m.

- All floatplane versions had a total length of 10,10 - 10,15 m including the floats.

- All versions up to the F 13f had a fuselage length of 9,59 - 9,60 m.

- All versions from the F 13g onwards had a fuselage length of 9,80 m.

- The wing area is stated as 34,5 m3 for the short wing and 43 m3 for the long wing. The wing area for the F 13k is stated as 44 m3, the same as for the W 33.

So the 10,50 m fuselage does not exist. It is equally unimaginable that the F 13 should have had the same fuselage length with the Junkers inline-engine and an assortment of different radials (were the radial versions ever built?).

From memory, the kit wing represents that found on the F13k, which is the one from the W33

Edited February 10, 2012 by Dave Fleming

[Test Graham]

Excuse me Dave, but I'm not clear whether you are saying that there were two or three wings on the F-13.

A prototype wing

A main production wing

Another wing on the F-13k and the W-33?

[Dave Fleming]

Excuse me Dave, but I'm not clear whether you are saying that there were two or three wings on the F-13.

A prototype wing

A main production wing

Another wing on the F-13k and the W-33?

That seems to be what is suggested - maybe not just prototype, but all early aircraft- both early wings had broad/flared ailerons, the W33 wing had straight ones.

Full threads on WOP is here:

http://groups.yahoo.com/group/wingsofpeace...ar=1&tidx=1

http://groups.yahoo.com/group/wingsofpeace...ar=1&tidx=1

Edited February 10, 2012 by Dave Fleming

[CarLos]

From memory, the kit wing represents that found on the F13k, which is the one from the W33

I don't think so; The kit represents the second wing, but with incorrect ailerons.

[Dave Fleming]

I don't think so; The kit represents the second wing, but with incorrect ailerons.

You may be right