Nederlandse Modelbouw en Luchtvaartsite

Dutch Modelling and Aviation

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.

Ryan STM-2 and STM-2S

History

The Ryan Aeronautical Company was founded in 1934 by Claude T. Ryan and was more or less the successor to Ryan Airlines, the firm who had built the Ryan NYP "Spirit of St. Louis".

The first draft of the Ryan ST "Sports Trainer" made its first flight in June 1934.
The performance with the Menasco B-4 of 95 hp was very disappointing. So in 1935, the Ryan ST-A with a Menasco C-4 125 hp was released. One year later, the ST-A Special was released with a Menasco C-4S with turbo and a power of 150 bhp.


The single seat version was the Ryan ST-B.

In 1937 an order was placed by the Mexican Air Force for six ST-A Specials. These were referred to as STM (SportTrainer Military) and had a slightly enlarged cockpit openings because of the chutes the crew carried.

The Ryan STM S2 was a version equipped with EDO Model 1965 floats. Nationalist China received a version with a machine gun under the designation STM-2P.

The USAAC used a few dozen STMs. The Menasco engine proved to be unreliable and Ryan was commissioned to replace this engine with a 440 Kinner radial engine.

Ryan was also commissioned to design a version with the Kinner radial engine as the standard engine. This meant that especially the nose section had to be re-designed.

The hull was broader and rounder and furthermore the rudder, the ailerons and elevators were reviewed.

A version that was developed in the late 1941, early 1942 was the ST-3KR (Kinner Radial), with a more powerful Kinner R-5. Over thousand examples of this version were built under the military designation PT-22.

The ST-4 was a wooden version of the ST-3, designed to be prepared for a shortage of metals such as aluminium.

Versions.

Ryan ST:
Prototype and first version with Menasco B-4 of 95 hp; five examples built.
Ryan ST-A:
Improved version with Menasco C-4 of 125 hp; 73 examples built.
  • Ryan XPT-16: One Ryan ST-A, purchased by the USAAC to be evaluated.
  • Ryan XPT-16A: Ryan XPT-16 fitted with a Kinner R-440 radial engine of 125 hp.
  • Ryan YPT-16: 15 pre-production aircraft for the USAAC.
  • Ryan PT-16A: 14 YPT-16s modified and fitted with a Kinner R-440 engine.
Ryan ST-A Special:
Improved ST-A, fitted with a Menasco C4S engine of 150 hp; 10 examples built.
Ryan ST-B:
A single-seat version of the ST-A with extra fuel tank.
Ryan STM:
22 examples of the military version of the ST-A Special including enlarged cockpits; a crash bracket incorporated into the front windshield.
  • Ryan STM-2: 95 pieces of a variant of the STM for NEIAF and RNlNAS.
    • Ryan STM-S2: Thirteen examples for RNlNAS with floats, which was interchangeable with the wheel base.
  • Ryan STM-2E: 48 examples of a version with a 165 hp Menasco C4S2, built for China.
    • Ryan TM-2P: Two pieces of a single application of the STM-2E with provision of a machine built for China.
  • Ryan PT-20: Thirty examples built for the USAAC.
  • Ryan PT-20A: USAAC designation for Kinner R-440 equipped PT-20s.
Ryan ST-W:
Modified experimental YPT-16 with a Warner Scarab radial engine of 125 hp and one modified USAAC PT-20A with a Super Scarab 160 hp.
Ryan ST-3:
Improved version with a wider, rounder body and a Kinner B-5 radial engine of 125 hp; one built.
  • Ryan PT-21: Military production version of the Ryan ST-3; Built 100 examples.
Ryan ST-3KR:
Version of ST-3 with a stronger Kinner R-5 radial engine of 160 hp; one built.
  • Ryan PT-22A: Designation for 25 by the NEIAF ordered examples that were not delivered and taken over by the USAAF.
  • Ryan PT-22C: 250 examples of a customized version, fitted with a Kinner R 540-3 engine.
  • Ryan PT-22 Recruit: Military production version of the ST-3KR with Kinner R 540-1 engine, 1048 examples built.
  • Ryan NR-1: 100 examples built for the US Navy.
Ryan ST-4:
One built ST-3 with a wooden hull.
  • Ryan YPT-25: Five evaluation examples for USAAC.

 

Technical information
Dimensions:
Length: 6,52 m Wingspan: 9,12 m
Height: 2,11 m Wing area: 11 m2
Weights:
Empty weight: 480 kg Max. start weight: 726 kg
Performances:
Max. speed: 257 km/hr Climbing speed: - m/min
Cruising speed: 217 km/hr    
Range: 600 km Service ceiling:  
Miscellaneous:
Engine type: One Menasco C-4S rated 150 hp
Crew: Two: one instructor plus one pupil
Armament: None

 


In service with RNlNAS and NEIAF.

 

The Ryan STM was used as primary trainer by the RnlNAS with and without floats at Perak and Morokrembangan.

36 Ryans were transported by ship to Australia and arrived on March 10, 1942 in Sydney.

Initially, it was intended to establish a flying school in Australia. The flying schools of the RNlNAS and the NEIAF were evacuated to Australia.

As the RNlMFS (Royal Netherlands Military Flying School) at Jackson, Mississippi was founded in June 1942 the training in Australia was lapsed and the Ryans were sold to the RAAF.

By lingering over whether or not to evacuate the Ryans of the NEIAF all remaining Ryans of the NEIAF fell into Japanese hands after the capitulation. [I used the capitulation date as date of out of service for all NEIAF-Ryans.]

 

Ryan STM trainer S-26
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
Ryan STM trainer S-51
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
Ryan STM trainer S-26
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
Ryan STM trainer S-14
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
Camouflaged Ryan STM trainer S-54?
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
Ryan STM-S2 S11
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
Ryan STM-S2 S11
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]
Ryan STM-S2 S45 [ap Beeldbank NIMH]
Ryan STM-S2 S35
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]

 


Ryan STM-2 & STM-2S

 

 
   

 


Serial overview RNlNAS and NEIAF.

Serial overview Ryan STM-2 en Ryan STM-2S RNlNAS.

Serial Overview Ryan STM-2 RNlNAS.

Serial
Serial
Constr. nr.
Constr. nr.
Date in service
Date in service
Date out of service
Date out of service
Notes
notes
Ordering date 25-06-1940. Entered service in October 1940.
Originally with landing gear, but later twelve float sets were bought.
S-11 447 01-10-1940 17-02-1942  
S-12 448 01-10-1940 17-02-1942  
S-13 449 01-10-1940 17-02-1942  
S-14 450 01-10-1940 01-06-1942 Sold to RAAF in June, became A50-7.
S-15 451 01-10-1940 17-02-1942  
S-16 452 01-10-1940 01-06-1942 Scrapped in June 1942?
S-17 453 01-10-1940 01-06-1942 Sold to RAAF in June , became A50-24
Ordering date 25-06-1940.
Entered service in November 1940. Ordinary landing gear. Later twelve float sets were bought.
S-18 454 01-11-1940 01-06-1942 Sold to RAAF in June , became A50-27
S-19 455 01-11-1940 01-06-1942 Sold to RAAF in June , became A50-25
S-20 456 01-11-1940 21-04-1941 Crashed.
S-21 457 01-11-1940 01-06-1942 Sold to RAAF in June, 1942 became A50-30.
Nowadays (2010) still flying in the USA
S-22 458 01-11-1940 01-06-1942 Sold to RAAF in June 1942, became A50-17
Ordering date 08-07-1940.
Entered service in November 1940. Ordinary landing gear. Later twelve float sets were bought.
S-23 459 01-11-1940 01-06-1942 Sold to RAAF in June 1942, became A50-11
S-24 460 01-11-1940 01-06-1942 Sold to RAAF in June 1042, became A50-15
S-25 461 01-11-1940 01-06-1942 Sold to RAAF in June 1942, became A50-33
S-26 462 01-11-1940 01-06-1942 Sold to RAAF in June 1942, became A50-21
S-27 463 01-11-1940 01-06-1942 Sold to RAAF in June 1942, became A50-12
S-28 464 01-11-1940 01-06-1942 Sold to RAAF in June 1942, became A50- 4
S-29 465 01-11-1940 01-06-1942 Sold to RAAF in June 1942, became A50-22
S-30 466 01-11-1940 01-06-1942 Sold to RAAF in June 1942, became A50-18
Ordering date 08-07-1940. Entered service in December 1940. Ordinary landing gear. Later twelve float sets were bought.
S-31 467 01-12-1940 01-06-1942 Sold to RAAF in June 1942, became A50- 2
S-32 468 01-12-1940 17-02-1942  
S-33 469 01-12-1940 01-06-1942 Sold to RAAF in June 1942, became A50-34
S-34 470 01-12-1940 17-02-1942  

 

Serial overview Ryan STM-2S RNlNAS.

Serial
Serial
Constr. nr.
Constr. nr.
Date in service
Date in service
Date out of service
Date out of service
Notes
notes
Ordering date 15-08-1940; Float planes; Entered service in October 1940.
S-35 471 01-12-1940 01-06-1942 Sold to RAAF in June 1942, became A50-23
S-36 472 01-12-1940 17-02-1942  
S-37 473 01-12-1940 01-06-1942 Sold to RAAF in June 1942, became A50-1
S-38 474 01-12-1940 01-06-1942 Scrapped?
S-39 475 01-12-1940 01-06-1942 Sold to RAAF in June 1942, became A50-9
S-40 476 01-12-1940 01-06-1942 Sold to RAAF in June 1942, became A50-31
Ordering date 15-08-1940; Float planes; Entered service in November 1940.
S-41 477 01-12-1940 01-06-1942 Sold to RAAF in June 1942, became A50-10
S-42 478 01-12-1940 17-02-1942  
S-43 479 01-01-1941 01-10-1941 Crashed.
S-44 480 01-01-1941 17-02-1942  
S-45 481 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50-32
Ordering date 15-08-1940; Float planes; Entered service in January 1941.
S-46 482 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50-19
S-47 483 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50- 5
S-48 484 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50-28
S-49 485 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50-14
S-50 486 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50-16
S-51 487 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50- 8
S-52 488 01-01-1941 17-02-1942  
S-53 489 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50-13
S-54 490 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50-26
S-55 491 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50-20
S-56 492 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50-29
S-57 493 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50- 6
S-58 494 01-01-1941 01-06-1942 Sold to RAAF in June 1942, became A50- 3

 

Serial overview Ryan STM-2 NEIAF.

Of the Netherlands Indies Ryans hardly any information is available.
Where the Dutch Navy decided to evacuate the FLying Schooll to Australia, the NEIAF didn't do the same with their flying school.
All, remaining Ryans were captured by the Japanese after the capitulation.
In overview below I have entered the date of the capitulation as date out of service for all Ryans.

Serial
Serial
Constr. nr.
Constr. nr.
Date in service
Date in service
Date out of service
Date out of service
Notes
notes
R010     08-03-1942  
R011     08-03-1942  
R012     08-03-1942  
R013     08-03-1942  
R014     08-03-1942  
R015     08-03-1942  
R016     08-03-1942  
R017     08-03-1942  
R018     08-03-1942  
R019     08-03-1942  
R020     08-03-1942  
R021     08-03-1942  
R022     08-03-1942  
R023     08-03-1942  
R024     08-03-1942  
R025     08-03-1942  
R026     08-03-1942  
R027     08-03-1942  
R028     08-03-1942  
R029     08-03-1942  
R030     08-03-1942  
R031     08-03-1942  
R032     08-03-1942  
R033     08-03-1942  
R034     08-03-1942  
R035     08-03-1942  
R036     08-03-1942  
R037     08-03-1942  
R038     08-03-1942  
R039     08-03-1942  
R040     08-03-1942  
R041     08-03-1942  
R042     08-03-1942  
R043     08-03-1942  
R044     08-03-1942  
R045     08-03-1942  
R046     08-03-1942  
R047     08-03-1942  
R048     08-03-1942  
R049     08-03-1942  
R050     08-03-1942  
R051     08-03-1942  
R052     08-03-1942  
R053     08-03-1942  
R054     08-03-1942  
R055     08-03-1942  
R056     08-03-1942  
R057     08-03-1942  
R058     08-03-1942  
R059     08-03-1942  
R060     08-03-1942  
R061     08-03-1942  
R062     08-03-1942  
R063     08-03-1942  
R064     08-03-1942  
R065     08-03-1942  
R066     08-03-1942  
R067     08-03-1942  
R068     08-03-1942  
R069     08-03-1942  

 


1/72nd Scale

Kits

  • Dujin
    • Kit A72110: A resin kit of a Ryan PT20A/21/22 Recruit
  • High Planes
    • Kit 72007: Ryan STM/PT20 (USAAF, NEIAF)
  • MPM
    • Kit 72084: Ryan PT-20/STM-2 (wheels & floats)
  • Rareplanes
    • Kit 1011: A vacu formed kit

 

A model of a Ryan STM-2 of the RNlNAS, built by Peter Banis.

Ryan STM2 PBanis 1 Ryan STM2 PBanis 2 Ryan STM2 PBanis 3 Ryan STM2 PBanis 4

 

Modelling add-on

  • --
    • Set --: --

Decals

  • Dutch Decal
    • Set 72043: Set with orange triangles for e.g. two schemes of Ryan STM-2 S-26.
    • Set 72045: Set with orange triangles for e.g. Ryan STM-2 RO30 and Ryan STM-2 S-51.
    • Set 72068: Set with orange triangles for e.g. Martin WH-1, Consolidated PBY-5/A, DH-85, DB-7B, Brewster B-340 (What if..), Dornier Do215B (What if..), STM Ryan, Fokker D.XXIII .
  • FlevoDecal
    • Set FD72-012: Set met opties voor vijf Brewsters, Curtiss Hawk 75, Curtiss CW-21 en CW-22; Messerschmidt Me-108, Ryan STM, Lockheed 12 en Lodestar, Bücker Bu-131 en Martin WH-1 en WH-2
    • Set FD72-023: Royal Netherlands Navy over the Dutch East Indies 1939-1942

1/48th Scale

Kits

  • Testors
    • Kit 510: Ryan PT-20/STM-S2

Modelling add-on

  • --
    • Set -: -

Decals

  • FlevoDecal
    • Set FD48-012: Set for e.g. five Brewsters, Curtiss Hawk 75, Curtiss CW-21 and CW-22; Messerschmidt Me-108, Ryan STM, Lockheed 12 and Lodestar, Bücker Bu-131 and Martin WH-1 and WH-2
    • Set FD48-016: Royal Netherlands Navy over the Dutch East Indies 1939-1942

 


Scheme Colour name FS number BS number Humbrol XtraColor Vallejo Model Color Vallejo Model Air
Ryan STM-2 and STM--2S RNlNAS
Standard #1: Delivery scheme Overall Bare metal (fuselage)
Wings etc. aluminium Dope
    56 / 191 X216 70.864  
From beginning 1941 camouflage applied on largest part of the aircraft
Standard #2   Olive green Jong blad ?     149 X114 70.895 ? 71.034
Ryan STM-2 NEIAF
Standard #1 Overall Bare metal (fuselage)
Wings etc. aluminium Dope
    56 / 191 X216 70.864  
 
Standard #2 Overall Jong blad     149 X114 70.895 ? 71.034

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

 

Ryan STM RNlNAS

Ryan_STM2-MLD-1-SMALL
Delivery scheme STM-2 RNlNAS.
Ryan_STM2-MLD-2-SMALL
Camouflage on upper-sides of RNlNAS STM-2.
Ryan_STM2S-MLD-1-SMALL.gif
Delivery scheme STM-2S RNlNAS.
Ryan_STM2S-MLD-2-SMALL
Camouflage on upper-sides of RNlNAS STM-2S

 

Ryan STM NEIAF

Ryan_STM2-MLKNIL-1-SMALL
Delivery scheme STM-2 NEIAF
RRyan_STM2-MLKNIL-2-SMALL
Camouflage on upper-sides of NEIAF STM-2

 


Literature.

Cockpit, nummer 10, oktober 1971 jaargang 12, oktober 1971: Meer zeldzame foto's van Nederlandse Ryans Hugo Hooftman Pag. 264 - 268 1971 COCKPIT-uitgeverij, Bennekom
Zestig jaar Marineluchtvaartdienst in Beeld. Hugo Hooftman Pag. 74 - 76 1977 Uitgever: Europese Bibliotheek, Zaltbommel
Nederlandse Marinevliegtuigen Thijs Postma & Nico Geldhof Pag. 41 1978 Uitgever: Omniboek, 's Gravenhage
Militaire Luchtvaart in Nederlandsch-Indië in beeld. Deel 1 Hugo Hooftman Pag. 150 - 155 1978 Uitgever: Europese Bibliotheek, Zaltbommel
AVIA: 41e jaargang nummer 3: Foto van Ryan STM-S2 S-11 (met or. driehoek en drijvers)   Pag. 118 - 1982 Uitgevers Wyt, Rotterdam
40 Jaar luchtvaart in Indië Gerard Casius & Thijs Postma Pag. , 63 1986 Uitgeverij De Alk, Alkmaar
70 Jaar Marine-LuchtvaartDienst Nico Geldhof Pag. 59 - 63 1987 Uitgeverij Eisma b.v., Leeuwarden
Camouflage en Kentekens J.Greuter e.a.   1997 Bonneville – Bergen (NH)
85 Jaar Marineluchtvaartdienst in beeld Van Farman tot NH 90 Helikopter Peter Korbee Pag. 66 - 67 2002 Uitgever: Korbee MLD Promotie, Valkenburg

 

Websites.

--