Junior Series Scale Model Plans

Chrislea Skyjeep


Les Saxby has again been kind enough to supply me with details of another little gem from the Frog Junior range - this time one of their scale model range, the Chrislea Skyjeep. I think this one has the possibility to be an excellent little flyer if you keep the weight down.

The parts were scanned and cleaned up from copies of the original kit printwood, so the shapes are as accurate as the die-cutting of the Frog originals. I would be grateful for feedback on how they fit together, as I am quite prepared to fiddle around with the artwork if necessary.

Patterns for the printed flying surfaces are provided. The shade of blue used is not guaranteed accurate - the original printing was dark blue. This rather bright shade used for the artwork actually comes out quite dark on my printer, but may not on yours. You should be able to adjust the shade of the bitmaps in any graphics or paint program to suit your printer. For an excellent tutorial on how to ink jet print directly onto balsa sheet, visit Paul Bradley's excellent web site here.

What thickness of wood you use is an interesting question. Thanks to Tony Crollie, I have been able to borrow the rear fuselage, including tail surfaces, of a Junior Series B.A.Swallow. It has been painted since it was first built (and has been doing service as an RTP model) but it has been possible to measure the wood thickness of the parts. My trusty vernier callipers give a value of 0.045", or approx. 1/22". Put another way, 1.14 mm.

If you want to fly indoors and get reasonable duration, I think you would be best using 1/32 sheet for everything. This will require all the fuselage formers to be reinforced top and bottom, and the nose former doubled up (or faced with 1/64 ply), but I think it would be strong enough. If you want to make a more robust replica, then find the lightest 1/20 sheet you can find and give it a bit of a sand! You will have to adjust slots and cut-outs to suit the sheet you are planning to use.

Download Skyjeep pdf file here (366 KB)

Download Skyjeep bmp files here (363 KB)



Jeremy Woods, from Wichita, Kansas, is first off the mark with a model built from this plan. He used a multiple of different wood sizes 1/16", 1/24", and 1/32". All the tail surfaces are adjustable thanks to hinges made from small wire. Jeremy got round the problem of not having a printer with a straight through paper path by printing out the decoration onto tissue, then attaching that to the wooden sheet. The prop was a 4 inch item from a guillow's kit, and the motor 4 loops of 3/32 F.A.I. sport rubber.



Jeremy has flown it a couple of times in his backyard and he says it flies very well considering it is made to fly indoors. A little wobble, but that can probably be attributed to the slight winds. The plane also takes off and lands quite nicely.

Thanks for sending the photos Jeremy.


Westland Wyvern


Another charming little Junior scale type this time from the fighter range. At first glance an unlikely candidate for the Junior range, the real Westland Wyvern was an impressive beast - a large "torpedo fighter" with contra rotating props. However, at the time the kit came out, I guess it was a fairly high profile and exciting aircraft now of course it is not regarded as a great success, and its role was soon superseded by pure jet aircraft. The Frog version is naturally rather simplified, but should make into a very attractive model. It is based on the T.F.1 version with the Eagle engine (you can tell this from the exhaust and intake details). Many thanks to Peter Williams for sending me a copy of the plan. I have had a lot of fun with this one working out and drawing up the full size part shapes and colouring them in. I will be building one myself, so will be able to make corrections if I run into fit problems.

There are various options regarding the balsa parts, and I have produced three distinct sets, with the plan as a separate file.

Version 1: Just the outlines, with no other detail. Use this one if you are intending to airbrush the model in a realistic colour scheme, or just fancy the look of unspoiled Balsa!

Version 2: These parts contain markings based on the views shown on the plan and instructions. So, the control surfaces, exhaust detail, and markings etc. are included, plus areas of dark grey where black is shown on the plan. No idea if this is what was on the original I doubt they would have printed so many different colours. In fact I am sure they would have only printed one! You can of course edit the colours of the bitmap versions using your favourite graphics program. The upper fuselage needs to be painted after assembly.

Version 3: My attempt to create a vaguely realistic scheme for the Wyvern which you can print onto the wood using your ink jet printer. The colours (at least on my printer) are a reasonable match to extra dark sea grey and sky. There are obvious problems though typical of pre-printed kits including the fin only having one printed side, and the wing and tailplane being bare wood underneath. I guess you could pass the wood through the printer first upside down and just give it a coat of sky ink? This is all theory, of course, as my printer does not have a straight through paper path. The two nose blocks will also need to be painted to match after shaping.

Download Wyvern plan pdf file here (87 KB)

Download Wyvern plan bmp files here (122 KB)

Download Wyvern parts version 1 pdf file here (27 KB)

Download Wyvern parts version 1 bmp files here (14 KB)

Download Wyvern parts version 2 pdf file here (93 KB)

Download Wyvern parts version 2 bmp files here (32 KB)

Download Wyvern parts version 3 pdf file here (92 KB)

Download Wyvern parts version 3 bmp files here (33 KB)


Cessna 140


Like the Skyjeep, I think this one should be a good flyer. The shapes of the wings and tailplane have been taken from the 1/4 size drawing on the plan, so no guarantees they are 100% correct. Likewise, the decoration on these surfaces is also taken from this view, and may not be exactly the same as the original kit.

I have provided two sets of parts for the model, one in blue and one in red, as I am not sure what colour the original one was.

Download Cessna plan pdf file here (89 KB)

Download Cessna plan bmp files here (126 KB)

Download red Cessna parts pdf file here (66 KB)

Download red Cessna parts bmp files here (33 KB)

Download blue Cessna parts pdf file here (66 KB)

Download blue Cessna parts bmp files here (33 KB)


Spitfire





After missing out on quite a few examples, I finally managed to win a Frog Junior kit on Ebay without breaking the bank, so am happy to be able to post some photos here as as well as the plan, and an exact copy of the printwood parts.



Here are the complete kit contents, which are in excellent condition considering it is over 40 years old.

I took the opportunity to measure the thickness of the wood provided in the kit, and it was between 1/20" and 1/18". The thickest sheet was the one with the tail surfaces on - not an ideal situation!



This is what you get in the little paper bag. Interesting that two rubber motors were provided.



Here is a closer look at the prop and nose bush, supplied ready assembled, including a washer.



Finally here is the canopy moulding, which looks very much like it was plunge moulded by hand, rather than vac-formed. Perhaps a bit thick for the size of model, but nice and clear.

Download Spitfire plan pdf file here (93 KB)

Download Spitfire plan bmp files here (124 KB)

Download coloured Spitfire parts pdf file here 408 KB)

Download coloured Spitfire parts bmp files here (382 KB)

Download outline only Spitfire parts pdf file here (25 KB)

Download outline only parts bmp files here (23 KB)


SE5A



This was the only biplane in the Junior scale range, and a good choice I think, with a decent nose length for a WW1 type. The scale appearance would be improved by using larger wheels than shown on the plan, if you felt so inclined. Span is just 10 inches, rather than the 12 inch standard across the rest of the range. I have had a stab at drawing in the printed details and markings on the wings and tailplane based on a catalogue illustration. They are probably not 100% accurate, but pretty close I think. All the other Junior scale models I have seen have been printed in blue, so I have assumed the same for this one. If you want to change this, it is easy to edit the bitmaps. Alternatively parts sheets are provided featuring only the outlines.

My suggestion for this model would be to use light 1/20"balsa for the fuselage and formers, and 1/32" sheet for the flying surfaces. Don't forget to send me a photo if you build one and let me know how it flies.

Download SE5 plan on two A3 sheets as a pdf file here (195 KB)

Download SE5 plan on four A4 sheets as a pdf file here (207 KB)

Download SE5 plan on two sheets suitable for printing onto A3 paper (zipped bitmaps) here (149 KB)

Download SE5 plan on four sheets suitable for printing onto A4 paper (zipped bitmaps) here (163 KB)

Download coloured parts on three A4 sheets as a pdf file here 55 KB)

Download coloured parts on three A4 sheets as zipped bmp files here (41 KB)

Download outline only parts on three A4 sheets as a pdf file here (45 KB)

Download outline only parts on three A4 sheets as zipped bmp files here (14 KB)


Auster AOP 9



Thanks to Dave Purser for sending me the plan for the Auster AOP 9, which I think will make a very good flyer. As with the SE5 I have had a go at drawing in the printed decoration on the wings and tailplane based on a catalogue illustration of the original kit. I have done the patterns in blue, which seemed to be the most common colour used by Frog, but just for fun have also done a set in dull green with full colour markings.

Download AOP 9 plan on two A3 sheets as a pdf file here (167 KB)

Download AOP 9 plan on four A4 sheets as a pdf file here (184 KB)

Download AOP 9 plan on two sheets suitable for printing onto A3 paper (zipped bitmaps) here (126 KB)

Download AOP 9 plan on four sheets suitable for printing onto A4 paper (zipped bitmaps) here (142 KB)

Download blue coloured parts on three A4 sheets as a pdf file here 51 KB)

Download blue coloured parts on three A4 sheets as zipped bmp files here (36 KB)

Download green coloured parts on three A4 sheets as a pdf file here 52 KB)

Download green coloured parts on three A4 sheets as zipped bmp files here (37 KB)

Download outline only parts on three A4 sheets as a pdf file here (45 KB)

Download outline only parts on three A4 sheets as zipped bmp files here (25 KB)


The Javelin challenge!



Rather unusually I have been able to scan a set of original parts for one of the Frog Junior range that I do not have the plan for. So, your challenge, should you choose to accept it, is to recreate the Frog Junior Javelin without the aid of any instructions whatsoever. A lot of it will be obvious and the wing and tailplane incidence angles will be set automatically, but you will have to come up with reasonable positions for the fuselage formers and guess the dihedral angle. One piece of information I can pass on is that the main undercarriage legs are a shade under 1.5 inches long. Hopefully the catalogue illustration above will be helpful.

It goes without saying, but if anyone out there has a copy of the plan they could send me, it would be greatly appreciated!

Download coloured parts on five A4 sheets as a pdf file here 380 KB)

Download coloured parts on five A4 sheets as zipped bmp files here (272 KB)

Download outline only parts on five A4 sheets as a pdf file here (356 KB)

Download outline only parts on five A4 sheets as zipped bmp files here (276 KB)



Simon Rogers took up the Javelin challenge and produced this excellent looking model. The printing was done directly on the wood using T-shirt printing ink and an iron - an interesting alternative to printing on tissue then applying to the wood. The printing error on the right wing tip (a patch of missing blue) has now been corrected on the artwork.


Dart Kitten



Thanks very much to Dave Larkin, who sent me a copy of the plan and balsa parts for the Junior Scale Dart Kitten, all the way from Canada. This builds into a very pretty model, and it is nice that realistic engine detail is included on the plan. The red printing on the sheets is copied exactly from the original wood patterns, though I have added a mirror image of the fin in case you want to decorate its other side.

Download Kitten plan on two A3 sheets as a pdf file here (183 KB)

Download Kitten plan on four A4 sheets as a pdf file here (190 KB)

Download Kitten plan on two sheets suitable for printing onto A3 paper (zipped bitmaps) here (138 KB)

Download Kitten plan on four sheets suitable for printing onto A4 paper (zipped bitmaps) here (147 KB)

Download coloured parts on four A4 sheets as a pdf file here 54 KB)

Download coloured parts on four A4 sheets as zipped bmp files here (107 KB)

Download outline only parts on four A4 sheets as a pdf file here (44 KB)

Download outline only parts on four A4 sheets as zipped bmp files here (70 KB)



Chris Strachan is first off the mark with a Kitten model, and has left it in his preferred natural wood finish. As you can see, the workmanship is impeccable and the engine detail is very well done. I'll let you know how it goes.



Simon Rogers built this neat example and like his Javelin, applied the markings to the balsa using Tee-shirt transfer ink and an iron, with excellent results.



Thanks to Glenn Hill from North Carolina for sending me a picture of his well finished Kitten, which flew nicely after the addition of a little nose weight.


Sabre



Ken Bates was kind enough to photograph and copy parts from his Hales Frogflite Sabre kit so I could add it to the site. You don't have to be a rocket scientist to work out that this is a reissue of the the original Frog Junior kit, with minimal changes. If you look at the photo top left on the plan, you can even see where they have crudely covered over the Frog lettering and logo on the left wing. Below you will find two sets of parts for the model, one Frogflite, one with the original Frog graphics restored.



Here is the kit box - sorry for poor quality photo, but interesting to see nevertheless.





Pictures on the sides of the box show which of the Frog Juniors became part of the Frogflite range. Can it really be true that the pretty little Frog Pup was actually renamed the Guppy?!

Below is a photo of the surviving kit parts.



Download Sabre plan as a single pdf file here (890 KB). Use Acrobat Reader version X or newer to tile if required.

Download Sabre plan as a single sheet bitmap file 3000 x 1630 pixels (zipped) here (835 KB)

Download coloured parts for Frog version on four A4 sheets as a pdf file here (104 KB)

Download coloured parts for Frogflite version on four A4 sheets as a pdf file here (104 KB)

Download coloured parts for both versions version on five A4 sheets as zipped bmp files here (114 KB)


General notes on printing the plans

The small T shaped marks you will see on some of the sheets are spaced 50 mm apart, to help you get the pages the correct size.

The pdf files should print off at exactly full size if you set your printer to A4 paper (or A3 if noted). This should work even if you do not have A4 paper in the printer, as the margins have been left deliberately large.

You will need Acrobat reader to view the pdf files, which is a free download from the Adobe web site

Bitmap files are also provided in case you prefer to work with those. All images are scanned at 150 dpi.




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