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In Memoriam

Klaas Willem Jonker
(Wilko)
† April 30, 2018

On Monday 30 April 2018, Wilko Jonker died after a long illness at the age of 58. He leaves behind a wife and two children. The Dutch military aviation and plastic modeling were his hobby and on this website he shared all the knowledge he has collected over the years. His hobby has been able to distract him from the persistent disease in his body until the last week of his life. The contacts with other hobbyists were a major support for him.

This website will be maintained by different people for as long as possible, so that other enthusiasts can continue to benefit from extensive content.

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Friday, 21 February 2020 21:47

Fokker G.I

History

Text about the development.

Versions.

The commonly used terms Fokker G-IA and Fokker G-IB are no authentic Fokker designations and in fact incorrect. These are most attributed to Hugo Hooftman.
Fokker designated the machines of the LVA, equipped with Mercury engines, as Fokker GI "Mercury". These devices differed from the prototype. Because of the bigger engine and larger propeller, the wing section between the fuselage and the engine nacelle was greater. The fuselage was also different.
The machines equipped with Wasp engines were designated Fokker G.I "Wasp". These aircraft were dimensionally similar to the prototype.

 

Technical information Fokker G.I "Mercury"
(also referred to as G.IA, an unofficial name)
Dimensions:
Length: 10,87 m Wingspan: 17,16 m
Height: 3,8 m Wing area:: 38,3 m2
Weights:
Empty weight 3330 kg Max start weight 4500 kg
Performance:
Max. speed: 475 km/u Climbing speed: - m/min
Cruising speed: 383 km/u    
Range: 1500 km Service Ceiling: 9900 m
Miscellaneous:
Engine type: Two Bristol Mercury VIII rated 830 hp each.
Crew: Two
Armament: Eight fixed, forward firing 7,9 mm machine guns in the nose;
one movable 7,9 mm machine guns in a tail turret.
500 kg bombs

 

Technical information Fokker G.I "Wasp"
(also referred to as G.IB, an unofficial name)
Dimensions:
Length: 10,38 m Wingspan: 16,5 m
Height: 3,35 m Wing area:: 35,7 m2
Weights:
Empty weight 3150 kg Max start weight 4800 kg
Performance:
Max. speed: 443 km/u Climbing speed: - m/min
Cruising speed: 384 km/u    
Range: 1450 km Service Ceiling: 9000 m
Miscellaneous:
Engine type: Two Pratt & Whitney R-1340 Wasp rated 700 hp each
Crew: Two
Armament: Four fixed, forward firing 7,9 mm machine guns in the nose;
One movable 7,9 mm machine gun in a tail turret.
Sometimes two Madsen 23 mm guns plus two 7.9 mm fixed forward firing machine guns in the nose.

 


Information about Dutch aircraft.

Fokker G.I Mercury

 p.m.

 

Fokker G.I Wasp

The Fokker G.I Wasps were initially built for Spain en sprayed in overall Spanish Green. As the Spanish civil war ended before these aircraft were delivered, the aircraft were kept in store at the Fokker factory.

In December 1939, six examples were already test flown and it was decided the LVA would take over the full Spanish order.
Some modifications, such as Dutch inscriptions and some of the equipment, had to be made before these aircraft could be used in Dutch service.

It was decided to use the original Spanish green camouflage as a base and spray this over with a pattern of LVA beige and brown.

After some research for the armament to be used, it was decided to equip these Fokkers with four M.36 machine-guns in the nose.

In January 1940 the first one, registered 341 was delivered to the LVA. later the same month Fokker G.Is 345, 348, 349 and 355 were delivered.

In February 1940 Fokker G.Is 345 and 354 were delivered. All were unarmed and used for training.

 


Fokker G.I

 

 


Fokker G-1 Mercury.

Serials
Serials
Constr. nr.
Constr. nr.
Date in service
Date in service
Date out of service
Date out of service
Notes
notes
300 5521 23-11-1939 14-05-1940 Last G-1 Mercury delivered.
Captured by the Germans seen at Belgian air base Maldeghem as .. +93 (??).
301 5522 27-07-1939 10-05-1940 First G-1 Mercury delivered.
During German attack of airbase Bergen damaged and used as decoy.
Captured by the Germans.
302 5523 11-04-1939 10-05-1940 Used for a while as demonstration aircraft.
Flew with dive-brakes for testing purposes during the period December 1938 till January 1939.
Between June and August 1939 equipped with 'bathtub" in recce-configuration.
Destroyed during bombardment of Waalhaven on May 10, 1940.
303 5524 08-06-1939 14-05-1940 Set to fire at Schiphol.
304 5525 08-07-1939 11-05-1940 Flew with 'bathtub"between April and May 1939 in recce-configuration.
Damaged during German Attack of airbase Bergen and used as decoy. Destroyed during attack of Bergen on May 11, 1940.
305 5526 08-07-1939 10-05-1940 Destroyed during German attack of airbase Bergen on may 10, 1940.
306 5527 11-07-1939 05-01-1940 Collided with Fokker D.XXI 234, near Graft and crashed.
Written off on January 31, 1940.
307 5528 11-07-1939 14-05-1940 Stationed at the training unit at De Vlijt at Texel.
Hidden in a bane and captured by the Germans undamaged.
308 5529 13-07-1939 14-05-1940 Damaged during bombardment of airbase Bergen on May 10, 1940.
Set to fire on May 14, 1940.
309 5530 15-07-1939 10-05-1940 Burned due to bombardment of Waalhaven on may 10, 1940.
310 5531 19-07-1939 15-05-1940 Damaged during bombardment of airbase Bergen on May 10, 1940.
Captured by the Germans.
311 5532 19-07-1939 13-05-1940 On May 10, 1940 emergency landing on Beach near Oostvoorne due to lack of fuel.
Set to fire by German attack on May 13, 1940.
312 5533 21-07-1939 10-05-1940 Under repairs at Waalhaven.
Captured by the Germans.
313 5534 25-07-1939 10-05-1940 Under repairs at Bergen and destroyed during bombardment on May 10, 1940.
314 5535 28-07-1939 10-05-1940 Under repairs at Waalhaven.
Captured by the Germans.
315 5536 25-07-1939 14-05-1940 Captured by the Germans on May 14, 1940 at Bergen.
316 5537 16-11-1939 14-05-1940 Under repairs at Waalhaven.
Destroyed during bombardment or captured by the Germans.
317 5538 18-08-1939 10-05-1940 In hangar at airbase Bergen and destroyed during bombardment on May 10, 1940.
318 5539 01-11-1939 14-05-1940 Damaged during bombardment of airbase Bergen on May 10, 1940.
Repaired and crashed near Badhoevedorp or captured by the Germans.
319 5540 02-09-1939 10-05-1940 Burned during bombardment of Waalhaven on may 10, 1940.
320 5541 20-10-1939 15-05-1940 Faith unknown
321 5542 27-09-1939 15-5-1940 Damaged during bombardment of airbase Bergen on May 10, 1940 and captured by the Germans.
322 5543 22-09-1939 14-05-1940 Damaged during bombardment of airbase Bergen on May 10, 1940 and repaired.
On May 14 1940 set to fire at Schiphol.
323 5544 30-08-1939 14-05-1940 April 7, 1940 roll-over during landing on Waalhaven; May 1940 still under repairs at Fokker, Amsterdam.
Captured by the Germans.
324 5545 24-08-1939 14-05-1940 Faith unknown.
325 5546 28-07-1939 15-05-1940 Damaged during bombardment of airbase Bergen on May 10, 1940 repaired and used again.
Set to fire at Schiphol.
326 5547 02-09-1939 15-05-1940 Faith unknown.
327 5548 08-09-1939 15-5-1940 April 14, 1940 belly landing near Spijkenisse
In may 1904 still under repairs at Fokker, Amsterdam.
Captured by the Germans.
328 5549 11-09-1939 13-05-1940 On May 10, 1940 emergency landing on Beach near Oostvoorne due to lack of fuel.
Set to fire by German attack on May 13, 1940.
329 5550 22-09-1939 13-05-1940 On May 10, 1940 emergency landing on Beach near Oostvoorne due to lack of fuel.
Set to fire by German attack on May 13, 1940.
330 5551 16-09-1939 10-05-1940 Emergency landing near Zevenbergen on May 10,1940.
partly scrapped by local residents; wreckage removed..
331 5552 22-09-1939 10-05-1940 Burned during bombardment of airbase Bergen on May 10, 1940..
332 5553 30-09-1939 15-05-1940 Damaged during bombardment of airbase Bergen on May 10, 1940 an used as decoy.
Captured by the Germans.
333 5554 06-10-1939 10-05-1940 Burned during bombardment of airbase Bergen on May 10, 1940.
334 5555 20-10-1939 10-05-1940 Damaged during bombardment of airbase Waalhaven on May 10, 1940..
335 5556 31-10-1939 15-05-1940 In depot at Waalhaven.
Captured by the Germans.

 

Fokker G-1 Wasp.

Serials
Serials
Constr. nr.
Constr. nr.
Date in service
Date in service
Date out of service
Date out of service
Notes
notes
340 5419 23-04-1905 14-05-1940 Prototype;
Test flown 16-03-1937;
On 30-03-1939 tested by the NLL;
On 05-1940 95 % ready in the military barn at Schiphol.
Captured.
341 5557 16-01-1940 14-05-1940 Test flown on 03-04-1939 (on behalf of Estonia);
11-11-1939 registered341.
23-11-1939 first flight before delivery to LVA.
16-01-1940 handed over an moved to Soesterberg.
23-05-1940 damaged because of landing accident; may 1940 still under repair at Fokker. (50% finished).
triple camouflage; equipped with antenna.
342 5559 13-05-1940 14-05-1940 Test flown on 08-05-1939 (for Estonia);
13-05-1940 handed over after test flight;
14-05-1940 at Schiphol and captured.
Triple camouflage; equipped with antenna.
Armed
343 5560 13-05-1940 14-05-1940 Test flown on 30-06-1939 (for Estonia);
13-05-1940 handed over to LVA.
14-05-1940 burned at Haagweg near Schiphol.
344 5561 - 14-05-1940 Being assembled at Blaauwhoedveem-Vriezenveem.
95 % finished, captured and finished for Luftwaffe.
345 5563 16-02-1940 14-05-1940 14-08-1939 first flight.
18-12-1939 test flight for NLL.
16-02-1940 handed over.
08-05-1940 in storage at Ockenburg.
14-05-1940 Captured. Unarmed. Overall Spanish green.
346 5566 13-05-1940 14-05-1940 13-05-1940 first flight and handed over to LVA.
14-05-1940 collision with 343 .
Captured.
Triple camouflage; equipped with antenna and spinners.
347 5578 14-05-1940 14-05-1940 18-09-1939 first flight on behalf of Estonia.
Pseudo serial 975.
Captured.
Triple camouflage; equipped with antenna.
348 5579 25-01-1940 14-05-1940 02-10-1939 test flown with pseudo serial 977.
25-01-1940 handed over to LVA.
Unarmed Triple camouflage.
08-05-1940 in storage at Ockenburg.
Captured. 
349 5580 23-01-1940 14-05-1940 Op 16-01-1940 ingevlogen en op 23+01-1940 overgenomen.
Overall Spanish green.
Unarmed.
Captured at Schiphol.
350 5577 - - 10-05-1940 Armed and finished for 98 % at Schiphol.
14-05-1940 burned at Haagweg near Schiphol.
351 5568 - - 14-05-1940 95 % finished in Blaauwhoedveem-Vriezenveem.
Armed.
Captured and finished for Luftwaffe
352 5573 - - 14-05-1940 Unarmed 98 % finished at Schiphol.
14-05-1940 Captured and finished for Luftwaffe.
353 5581 - -  14-05-1940 95 % finished at Blaauwhoedveem-Vriezenveem.
Armed.
Captured and finished for Luftwaffe
354 5572 16-02-1940 14-05-1940 Op 09-02-1940 first flight;  16-02-1940 Unarmed and handed over to LVA. (Overall Spanish Green ?).
14-05-1940 in storage at Waalhaven; Captured.
355 5574 26-01-1940 14-05-1940 23-12-1939 first flight. 26-01-1940 handed over to LVA.
Unarmed (Overall Spanish green ?).
14-05-1940 in storage at Waalhaven; Captured.
356 5564 - - 14-05-1940  98 % finished at Schiphol.
Triple camouflage, Unarmed.
Captured and finished for Luftwaffe
357 5569 - - 14-05-1940 98 % finished at Schiphol.
Armed.
Captured and finished for Luftwaffe
358 5558 - - 19-04-1939 first flight (Estonia).
14-05-1940 95 % finished at Blaauwhoedveem-Vriezenveem.
Captured and finished for Luftwaffe.
359 5576 - - 14-05-1940 95 % finished at Blaauwhoedveem-Vriezenveem.
Armed.
Captured and finished for Luftwaffe
360 5562 10-05-1940 14-05-1940 Delivered? (at Schiphol) Unarmed.
Burned at Haagweg. 
361 5575 - - op 10-05-1940 98 % finished at Schiphol.
Triple camouflage.
14-05-1940 captured with burned rudders and repaired for Luftwaffe.
362 5567 - - 14-05-1940 92 % finished at Blaauwhoedveem-Vriezenveem.
Captured and finished for Luftwaffe.
05-05-1941 flown to England by Leegstra and Vos.
14-12-1941 at Miles, Reading for weathering tests. Scrapped.
363 5570 - - 14-05-1940 95 % finished at Blaauwhoedveem-Vriezenveem.
Captured and finished for Luftwaffe
364 5571 - - 14-05-1940 finished for 94 % at Blaauwhoedveem-Vriezenveem.
Captured and finished for Luftwaffe
365 5565 - - 14-05-1940 Captured, delivered to Luftwaffe unassembled (used for parts?). 

 


1/72nd Scale

Comparision of several models by Rob de Bie

  • MPM
    • Kit 72034: Model of Fokker G.I mercury
    • Kit 72123: Upgraded kit of Fokker G.I mercury
  • Rareplanes
    • Kit 4011: Vacu formed kit for Fokker G.I Mercury
  • Airmodel
    • Kit 337: a vacu formed kit; parts could be used for a Fokker G.I Wasp

 

Fokker G 1A 2
Fokker G.I 'Mercury', built by Adri Kleijn.
Fokker G 1A 2
Fokker G.I 'Mercury', built by Adri Kleijn.

Fokker G.I "Mercury, the MPM "upgraded kit, built by Peter Booij..

Fokker G.I "Mercury, the MPM "upgraded kit, built by Peter Booij.

 

 

Modelling add-on

  • Vector Resin
    • Kit 72001: Resin Bristol Mercury/Pegasus
  • Aeroclub
    • Kit E071: Bristol Mercury (Bristol Blenheim)
    • Kit E078: Bristol Mercury with Townend Ring
    • Kit E083: Bristol Mercury with Cowl (Blenheim, Lysander)
    • Kit E060: Pratt & Whitney Twin Wasp 1340 junior
  • Ardpol
    • Set AC010: Pratt & Whitney Wasp R1340

Decals

  • Dutch Decal
    • Set 72030: Set decals for e.g. Fokker G.1 with goose marking.
  • Dutch Profile
    • Set PS9072: Set decals for aircraft May 1940 e.g. Fokker TV, Fokker FVII/3m, Fokker G1, NA57 and FK51

1/48th Scale

Kits

  • AZ Models
    • Kit 48028: Fokker G.I
  • CMK
    • Kit R8-004: A resin kit
  • Classic Airframe
    • Kit 415:

Modelling add-on

  • --
    • Set --: --

Decals

  • --
    • Set --: --

 


Schema Kleurnaam FS-nummer Humbrol XtraColor WEM Vallejo Model Color Vallejo Model Air
Fokker G.I Mercury
Standard #1 Upper surfaces Camouflage Brown 20059     AC D02 70.985  
Camouflage Green 24077 172 X-223 AC D03 70.979?  
Camouflage Beige 26360 168 X-16 AC D01    
Undersides Camouflage Brown 20059     AC D02 70.985  
Fokker G.I Wasp
most aircraft Overall Spanish green  ca ~4079 116     70.893  
Some aircraft Uppersides (applied over the orignal green colour) LVA Camouflage Bruin 20059     AC D02 70.985  
LVA Camouflage Beige 26360 168 X-16 AC D01    

Check www.paint4models.com for an extensive conversion table with lots of colour and paint systems.

 

Fokker G.I "Mercury"

Fokker GI Mercury-1A-SMALL
Fokker G.I Mercury in the delivery scheme of the lower series. [the scheme varied per individual aircraft;  According the Fokker G.I foundation the aircraft were painted is series of three or four aircraft, so groups of three or four aircraft may have a similar pattern.]
Fokker GI Mercury-1B-SMALL
Fokker G.I Mercury; delivery scheme of high serials. In this scheme, the so called high scheme, the beige and green colours were exchanged, compared with the aircraft with lower serials..
Fokker GI Mercury-2A-SMALL
Fokker G.I Mercury, low scheme with brown rudder, summer 1939.
Fokker GI Mercury-2B-SMALL
Fokker G.I Mercury, high scheme, brown rudder, summer 1939.
Fokker GI Mercury-3A-SMALL
Fokker G.I Mercury, low scheme with orange rudder and orange triangles, September 1939 and on.
Fokker GI Mercury-3B-SMALL
Fokker G.I Mercury; high scheme with orange rudder and orange triangles, September 1939 and on.

 

Fokker G.I "Wasp" ( LVA version)

Fokker GI-Wasp-1-SMALL
Fokker G.I Wasp overall Spanish Green.
Fokker GI-Wasp-1-SMALL
Fokker G.I Wasp in triple camouflage.
Reconstructed from photos in both recent released books about the Fokker G.I

 


Literature.

Cockpit nummer 1, 1972 jaargang 13, januari/February 1972: 'Vliegtuigen uit onze Luchtmacht' De Fokker G-1: pagina 2 Hugo Hooftman Pag. 26 - 44 1972 COCKPIT-uitgeverij, Bennekom
Nederlandse Vliegtuig-Encyclopedie No. 2 Fokker G-1 Hugo Hooftman Pag. 1977 COCKPIT-uitgeverij, Bennekom
Nederlandse Militaire Luchtvaart in Beeld. deel 1. Hugo Hooftman Pag. 154 - 155 1977 Uitgever: Europese Bibliotheek, Zaltbommel
Modelbouw In Plastic jaargang 7, nummer 4: Fokker G-1, deel 2 Gerard Wind Pag. 116 - 121 1978 Uitgever: I.P.M.S. Nederland, Nederland
Modelbouw in Plastic jaargang 7, nummer 3: Fokker G-1 AD Hendriks Pag. 76 - 78 1978 Uitgever: I.P.M.S. Nederland, Nederland
Modelbouw In Plastic jaargang 8, nummer 1: Fokker G-1, deel 3 Gerard Wind Pag. 1979 Uitgever: I.P.M.S. Nederland, Nederland
Fokker, Bouwer aan de wereldluchtvaart Thijs Postma Pag. 105 - 121 1979 Uitgever: Unieboek b.v., Houten
De Nederlandse Vliegtuigen: Alle vliegtuigen ooit in Nederland ontworpen en gebouwd Theo Wesselink & Thijs Postma Pag. 105 - 107 1982 Uitgever: Romen Luchtvaart, Haarlem
Fokker-vliegtuigen voor de Militaire Luchtvaart   Pag. 16 - 17 1982  
Squadrons van de Koninklijke Luchtmacht Willem Helfferich Pag. 14; 16 1983 Uitgever: Unieboek b.v., Houten
Van Luchtvaartafdeling tot Koninklijke Luchtmacht 75 jaar Militaire Luchtvaart in Nederland Koos van de Berg Pag. 28 1987 Uitgever: Rebo Produkties, Sassenheim
KLu Vliegtuigen: De vliegtuigen van de Koninklijke Luchtmacht vanaf 1913 Wim Schoenmaker & Thijs Postma Pag. 58 1987 Uitgeverij De Alk, Alkmaar
Squadrons van de Koninklijke Luchtmacht (derde herzien druk) Willem Helfferich Pag. 17 - 20 1994 Uitgevers Wyt, Rotterdam
Camouflage en Kentekens J.Greuter e.a.   1997 Bonneville – Bergen (NH)
Fokker G-1 jachtkruiser, deel 1 F. Gerdessen, K. Kalman, C. Oostveen & W. Vredeling   2011 Violaero – Emmen
Fokker G-1 jachtkruiser, deel 2 F. Gerdessen, K. Kalman, C. Oostveen & W. Vredeling   2013 Violaero – Emmen

 

Websites.

Special thanks to mr F. Gerdessen and mr . C. van Veen, chairman of the Fokker G.I foundation for information about this aircraft.