SIG's Model Aircraft Kit and ARF History
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  • SIG Mfg Model Aircraft Kit History
  • Comprehensive List of All Kits & ARFs
  • SEAGULL ARFs
  • SIG RC Kits 1-20
  • SIG RC Kits 21-40
  • SIG RC Kits 41-60
  • SIG RC Kits 61-100+
  • SIG RC ARFs 44-83
  • SIG RC ARFs 84-880
  • SIG FF Kits
  • SIG C/L Kits
  • SIG RC "Kwik-Bilt" Kits
  • Misc. SIG Items
  • Hank Pohlmann's P2V Neptune
  • HERR Engineering Kits
  • ALIEN Kits
  • SIGs Kits From Other Manufacturers
  • WP Versions of this site, and database, for download

SIG Radio Control Kits

(Kits 21-40)

Active kits shown in BLACK

Discontinued kits shown in RED

Active kits, not in stock, in BLUE

Never Released kits shown in GRAY

NOTE: Clicking on most pics will bring them up, much enlarged, in another window.

It seems that I must put this statement on each page of the website.

I have NO affiliation

with

SIG Manufacturing Co.

 

I do not  have magical access to kits.  I do not  have a store that sells kits.

I do not  have access to, or sell kit parts.  I do not  create kits.

 

I do have a website that shows every kit SIG has ever put out.

 You are seeing it now.

RC-21

Stits Flutterbug

Designed by: Jack Bales

Wingspan - 45"

Weight - 28 oz.

     Radio Required - 3-4 channel

Engine -  .09-.15

 

RC-22

Relic

Designed by: Jack Bales

Wingspan - 45"

Weight - 21 oz.

    Radio Required - 3 channel

Engine -  .049-.15

Download
SIG Relic - single page instructions
Sig Relic Instructions.pdf
Adobe Acrobat Document 2.0 MB
Download

RC-23

  Zlin Akrobat

Designed by: Maxey Hester

Wingspan - 70"

    Radio Required - 4 channel

Engine -  .60

The original RC23 Zlin Akrobat building instruction book is  available for download in .pdf form - just click the link below to locate and download:

https://wanderings-ds-2.jimdofree.com/sig-rc-kits-plan-sheets-and-instructions/

Download
Set-up Specs for SIGRC23
SIGRC23-SP.jpg
JPG Image 47.7 KB
Download

RC-24

Aero Sportster

Designed by: Maxey Hester

Wingspan - 45"

    Radio Required - 4 channel

Engine -  .15-.19

 

RC-25

  Aero Bipe

Designed by: Maxey Hester

Wingspan - 34"

Area - 408 SqIn.

Weight - 32 oz.

   Radio Required - 4 channel

    Engine -  .049-.09

The original RC25 Aerobipe plan sheet is  available for download in .pdf form - just click the link below to locate and download:

https://wanderings-ds-2.jimdofree.com/sig-rc-kits-plan-sheets-and-instructions/

 

RC-26

Clipped-wing Cub

Designed by: Maxey Hester

Wingspan - 56"

   Wing Area - 557 Sq.In.

Length - 42"

Weight - 4 lbs.

Radio Required - 4 channel

Engine -  .19-.35

The original RC26 Clipped-wing Cub instruction book is  available for download in .pdf form - just click the link below to locate and download:

https://wanderings-ds-2.jimdofree.com/sig-rc-kits-plan-sheets-and-instructions/

Download
Set-up Specs for SIGRC26
SIGRC26-SP.jpg
JPG Image 39.7 KB
Download

The original RC26 Clipped Wing Cub kit plan sheet, instruction book and decal sheet are available directly through the SIG website:

SIGKP226             Kit plan

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-clipped-wing-cub-kit-parts?variant=46110280393

SIGIB226              Instruction book

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-clipped-wing-cub-kit-parts?variant=46110280329

SIGDKM226        Decal sheet 

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-clipped-wing-cub-kit-parts?variant=46110280265

RC-27

Ryan STA Special

1970

Designed by: Maxey Hester

Wingspan - 72"

       Radio required - 4-channel

Engine - .60

The original RC27 Ryan STA instruction book is  available for download in .pdf form - just click the link below to locate and download:

https://wanderings-ds-2.jimdofree.com/sig-rc-kits-plan-sheets-and-instructions/

Download
Set-up Specs for SIGRC27
SIGRC27-SP.jpg
JPG Image 52.2 KB
Download

RC-28

 Mustang 450

1971

Designed by: Hank Pohlmann

Wingspan - 49.5"

Radio - 4 channel

            Engine - .40

Did you know?

In the photo of Hank Pohlmann with the two prototype Mustang-450's, above, the red one belongs to Jim Duda.  Both are powered by highly modified K&B .40's.  During those days, Hank & Jim were experiencing a lot of engine failures.

At this same time, Steve Pohlmann (Hank's son) had begun his migration to cars and was crewing for his life-long friend, Dave Ray.  They used Klotz oil in their go-kart fuels and Steve discussed this with his father.  Hank added the Klotz to his fuel and all the issues ended right there, the rest is history.

 

That is the story behind why SIG's fuel has Klotz oil in it, and why SIG fuel is red - Klotz is red.

 

https://sigmfg.com/products/sig-champion-fuel

 

Dave and his son continue their racing as well.

www.daveyray.com

The original RC28 Mustang-450 plan sheet is  available for download in .pdf form - just click the link below to locate and download:

https://wanderings-ds-2.jimdofree.com/sig-rc-kits-plan-sheets-and-instructions/


E-mail, received 7 October 2020 from Steve Pohlmann

 

We are hoping to submit Dad’s last 450, Jim’s surviving prototype, and the first kit off the production line at SIG to the museum.  Their pylon display (at least what was out in the public area) is sorely lacking on any Formula One “golden era” planes.  We are hoping to address that.  Alas, Dad’s original plane is long gone, but Jason Duda (Jim’s son) was able to track down and reacquire his Dad’s plane.  The two planes on the magazine cover (large photo, above) are the two prototypes.  Dad valued Jim’s opinion on many things and had him build his plane to test theories, etc.  Third pic is Jim holding Dad’s final 450 – the one now in my collection.  Hopefully, both of these planes are bound for the AMA museum.  You have our permission to add these photos to your website.

Steve Pohlmann                     Jason Duda

I would like to add that I have the original 5 photos, above - should anyone want the full-size originals.

RC-29-1

Komet

1971

Designed by: Maxey Hester

Wingspan - 67"

      Weight - 7 lbs.

   Radio Required - 4 channel

                     Engine -  .45-.60

Shown is the Komet with balsa wing sheeting - officially kit # RC29-1.

There's a rather nice "build" thread on RCG, located at: http://www.rcgroups.com/forums/showthread.php?t=1542127

Komet by Dave Carroll

Click this link (below) to obtain a pdf print of the original plans for the RC-29 Komet.

https://www.dropbox.com/s/xkbyw596hnpybob/sigrc29-Komet%20Plan%20PDF%20print.pdf?dl=0

RC-29-2

Komet

1971

Designed by: Maxey Hester

Wingspan - 67"

Weight - 7 lbs.

Radio Required - 4 channel

Engine -  .45-.60

 

This is the Komet with ply wing sheeting - officially kit # RC-29-2.

There's a nice build thread of this particular plane on RCG, located at:

http://www.rcgroups.com/forums/showthread.php?t=1229202

RC-30

         Citabria

1972

Designed by: Maxey Hester

Wingspan - 69"

Wing Area - 740 Sq.In.

Length - 47"

         Weight - 7 lbs.

    Radio Required - 4 channel

   Engine - 2 stroke - .35-.50

4 stroke - .45-.61

The original RC30 Citabria instruction book is  available for download in .pdf form - just click the link below to locate and download:

https://wanderings-ds-2.jimdofree.com/sig-rc-kits-plan-sheets-and-instructions/

Download
Set-up Specs for SIGRC30
SIGRC30-SP.jpg
JPG Image 35.7 KB
Download

There's a good build thread on RCU located at: http://www.rcuniverse.com/forum/kit-building-121/9340636-sig-citabria-build.html

The original RC30 Citabria kit plan sheet, instruction book and decal sheet are available directly through the SIG website:

SIGKP230             Kit plan

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-citabria-kit-parts?variant=46139337417

SIGIB230              Instruction book

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-citabria-kit-parts?variant=46139337353

SIGDKM230A     Decal sheet 

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-citabria-kit-parts?variant=46139337289

RC-31

      Kadet

1972 (Original)

Designed by: Claude McCullough

Wingspan - 57"

        Wing Area - 635 Sq.In.

    Length - 42"

Weight - 4 lbs.

Radio Required - 3 channel

Engine - .15-.29

Original Kadet box graphic.

  Note the name and recommended engine ratings,

and compare to the SIGRC51 Kadet Mk-I box.

Inside - showing original plastic wingtips.

NOTE:  The instruction booklet for RC-51 also works just fine for this plane.

The original RC31 Kadet full-size windshield pattern, 3 full plan sheets and instruction book are  available for download in .pdf form - just click the link below to locate and download:

https://wanderings-ds-2.jimdofree.com/sig-rc-kits-plan-sheets-and-instructions/

RC-32

     Kommander

1973

Designed by: Claude McCullough

Wingspan - 62"

Length - 44"

Weight - 5.5 lbs

            Radio Required - 4 channel

Engine - .40-.50

RC-32

     Kommander Mk-II

(1978)

Designed by: Claude McCullough

Wingspan - 62"

Length - 44"

Weight - 5.5 lbs

Radio Required - 4 channel

Engine - .40-.50

The original RC32 Komander Mk-II instruction book (in 3 parts, thanks to RCUniverse ID "Big Stikflyer"), plan sheet and an amendment to the plans sheet (thanks to Dave Z) and foam wing core sizing map (thanks to RCU member "bbrowncods") are  available for download in .pdf form - just click the link below to locate and download:

https://wanderings-ds-2.jimdofree.com/sig-rc-kits-plan-sheets-and-instructions/

RCU member "bbrowncods" has done a lot of work in providing full measurements of the foam wing core for the Kommander.  With his permission, I've included his entire entry, unchanged:  I might add that Eureka Aircraft now carries the part, #W0790, $35.00
I just sent Eureka Aircraft the details they requested to make a set of foam cores. I attached a PDF of the fuselage plans that includes the wing profile. Also the measurements of the cores. I'll include them here for info of anyone that needs them.
30"=Span of one panel
12.5"=Root Cord (11.0 foam + 0.25LE + 0.25TE + 1.0 aileron)
8.25"=Tip Cord (6.75 foam + 0.25LE + 0.25TE + 1.0 aileron)
+1.5"=Sweep Back
1.7"=Profile at Thickest Point (includes 1/16 top sheeting and 1/16 bottom sheeting)
0.25"=Thickness of LE material
1.25"=Thickness of TE material (includes 0.25" TE + 1.0" Aileron)
1/8"=Washout at tip

RC-33

Liberty Sport

1973

Designed by: Dick Graham

Wingspan - 57"

Length - 45"

   Radio - 4-ch

Engine - .45-.60

 

Liberty Sport box from 1987

Note: The original RC-33 Instruction booklet (which is too large to include on this website) is no longer available in .pdf form directly through the SIG website.  However, I have the .pdf file stored in dropbox.com and you can download a copy directly by clicking on the link below:

https://www.dropbox.com/s/70yj4zdu68fzs7h/SIGRC33-libertysport.pdf?dl=0

Once there, on the upper right side of the page should be 3 dots.  Click on the dots and choose "download".  Should you have any problems at all, e-mail me and I can send the link directly.

The original RC33 Liberty Sport plan sheet (3 sheets, you'll need them all) is available for download in .pdf form - just click the link below to locate and download:

https://wanderings-ds-2.jimdofree.com/sig-rc-kits-plan-sheets-and-instructions/

Download
Set-up Specs for SIGRC33
SIGRC33-SP.jpg
JPG Image 46.4 KB
Download

RC-34

      Skybolt

1975

Designed by: Claude McCullough

Wingspan - 51"

    Length - 42.2"

    Area - 790 Sq.In.

      Weight - 6.5 lbs.

    Radio Required - 4 channel

Engine -  .45-.60

 

Download
Plan Sheet for SIGRC34 Skybolt
SIGRC34 skybolt_sig_51in plans-sheet.pdf
Adobe Acrobat Document 1.9 MB
Download
Download
BUILDING AND FLYING INSTRUCTIONS FOR SIGRC34, pt-1
sigrc34skyboltp1.pdf
Adobe Acrobat Document 7.4 MB
Download
Download
BUILDING AND FLYING INSTRUCTIONS FOR SIGRC34, pt-2
sigrc34skyboltp2.pdf
Adobe Acrobat Document 6.4 MB
Download
Download
BUILDING AND FLYING INSTRUCTIONS FOR SIGRC34, pt-3
sigrc34skyboltp3.pdf
Adobe Acrobat Document 7.1 MB
Download
Download
Setup Specs for SIGRC34
SIGRC34-SP.jpg
JPG Image 47.2 KB
Download

RC-35

 Kougar

1975

Designed by: Claude McCullough

Wingspan - 50"

Wing Area - 540 Sq.In.

                   Length - 47"

Weight - 5.5-6 lbs.

                       Radio Required - 4 channel

                   Engine - .40-.60

Just to show what a Kougar CAN  become - here's double-vision.

And a beautiful, modern example with a pair of HB-40 PDP's by Corey Luth.

Download
BUILDING AND FLYING INSTRUCTIONS FOR SIGRC35
sigrc35kougar.pdf
Adobe Acrobat Document 5.1 MB
Download
Download
Setup Specs for SIGRC35
SIGRC35-SP.jpg
JPG Image 45.8 KB
Download

RC-35

Kougar Mk-II

1979

Designed by: Claude McCullough

Wingspan - 50"

Wing Area - 540 Sq.In.

                   Length - 47"

Weight - 5.5-6 lbs.

Radio Required - 4 channel

Engine - .40-.60

The original RC35 Kougar Mk-II instruction book and several decal sheets are available directly through the SIG website:

SIGIB235              Instruction book

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-kougar-mark-ii-kit-parts?variant=45917374025

SIGDKM235AB  Decal sheet (Stars & bars)

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-kougar-mark-ii-kit-parts?variant=45917373769

SIGDKM235AC  Decal sheet (Black Letters)

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-kougar-mark-ii-kit-parts?variant=45917373833

SIGDKM235B     Decal sheet (Team w/layout pattern)

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-kougar-mark-ii-kit-parts?variant=45917373897

SIGDKM235C     Decal sheet (Team insignia w/layout pattern) 

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-kougar-mark-ii-kit-parts?variant=45917373961

RC-36

 Klipper

1975

Designed by: Claude McCullough

Wingspan - 45"

Area - 290 Sq.In.

Radio - 2-3 channel

Engine - .09-.15

Note: The original RC-36 Instruction booklet (which is too large to include on this website) is no longer available in .pdf form directly through the SIG website.  However, I have the .pdf file stored in dropbox.com and you can download a copy directly by clicking on the link below:

https://www.dropbox.com/s/p1irhuc5pk5libj/SIGRC36-klipper.pdf?dl=0

Once there, on the upper right side of the page should be 3 dots.  Click on the dots and choose "download".  Should you have any problems at all, e-mail me and I can send the link directly.

RC-37

  Super Sport

1975

Designed by: Mike Gretz

Wingspan - 45"

    Area - 290 SqIn.

Engine - .09-.15

Download
BUILDING AND FLYING INSTRUCTIONS FOR SIGRC37
sigrc37-supersport.pdf
Adobe Acrobat Document 5.9 MB
Download

RC-38

Smith Miniplane

1976

Designed by: Mike Gretz

Wingspan - 44"

   Wing Area - 650 Sq.In.

Length - 40.38"

          Weight - 5.25 lbs.

 Radio Required - 4 channel

 Engine - .40-.45

Download
BUILDING AND FLYING INSTRUCTIONS FOR SIGRC38
sigrc38smithminiplane.pdf
Adobe Acrobat Document 2.6 MB
Download
Download
Setup Specs for SIGRC38
SIGRC38-SP.jpg
JPG Image 53.1 KB
Download

The original RC38 Smith Miniplane kit plan sheet, instruction book and decal sheet are available directly through the SIG website:

SIGKP238             Kit plan

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-smith-miniplane-kit-parts?variant=46139980233

SIGIB238              Instruction book

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-smith-miniplane-kit-parts?variant=46139980169

SIGDKM238        Decal sheet 

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-smith-miniplane-kit-parts?variant=46139980105

RC-39

Kavalier

1977

Designed by: Claude McCullough

Wingspan - 55.5"

   Wing Area - 575 Sq.In.

Length - 45.75"

    Weight - 5.5-6 lbs.

                   Radio Required - 4 channel

                   Engine - .29-.40

Download
BUILDING AND FLYING INSTRUCTIONS FOR SIGRC39
sigrc39kavalier.pdf
Adobe Acrobat Document 4.8 MB
Download
Download
Setup Specs for SIGRC39
SIGRC39-SP.jpg
JPG Image 52.2 KB
Download

The original RC39 Kavalier kit plan sheet and instruction book are available directly through the SIG website:

SIGKP239             Kit plan

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-kavalier-kit-parts?variant=45917806665

SIGIB239              Instruction book 

https://sigmfg.com/collections/sig-r-c-kit-parts/products/sig-kavalier-kit-parts?variant=45917806601

RC-40

Doubler-II

1977

Designed by: Brad Shepherd

Wingspan - 36"

                    Area - 315 Sq.In.

    Radio Required - 4 channel

                    Engine - .15

Note: The original RC-40 Instruction booklet (which is too large to include on this website) is no longer available in .pdf form directly through the SIG website.  However, I have the .pdf file stored in dropbox.com and you can download a copy directly by clicking on the link below:

https://www.dropbox.com/s/yhcjkc1edn07guy/SIGRC40-doublerii.pdf?dl=0

Once there, on the upper right side of the page should be 3 dots.  Click on the dots and choose "download".  Should you have any problems at all, e-mail me and I can send the link directly.

Download
SIGRC-40 Doubler II Plansheet
SIGRC-40 Doubler II plansheet.pdf
Adobe Acrobat Document 569.8 KB
Download
Download
Setup Specs for SIGRC40
SIGRC40-SP.jpg
JPG Image 48.3 KB
Download

These pages last updated:

23 June 2026

 

SIG Plans, Manuals & Specs site updated:

23 June 2026

 

SIG CL, FF, RC ARFs, RC KITs and SEAGULL Models are up-to-date as of:

23 June 2026.

  

 Engines, if not otherwise specified, indicate

2-stroke, plain-bearing, glow.

 

I am always happy to receive comments and suggestions concerning this SIG History  site.  If ANYONE finds information I do not have, I would be honored to be able to include it here.

 

Note: pictures here don't always copy with the greatest quality, or size.  I have all the originals shown here, and a lot more besides.  Should you ever want an original copy of any pic here, just e-mail me.  I will be happy to send it to you.

 

For all things, feel free to write me at this e-mail address:

E-mail - [email protected]

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  • SIG Mfg Model Aircraft Kit History
  • Comprehensive List of All Kits & ARFs
  • SEAGULL ARFs
  • SIG RC Kits 1-20
  • SIG RC Kits 21-40
  • SIG RC Kits 41-60
  • SIG RC Kits 61-100+
  • SIG RC ARFs 44-83
  • SIG RC ARFs 84-880
  • SIG FF Kits
  • SIG C/L Kits
  • SIG RC "Kwik-Bilt" Kits
  • Misc. SIG Items
  • Hank Pohlmann's P2V Neptune
  • HERR Engineering Kits
  • ALIEN Kits
  • SIGs Kits From Other Manufacturers
  • WP Versions of this site, and database, for download
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