The Gloster Gladiator is CAD designed and takes up 9 sheets,36"x75". Each sheet is described in detail with design intent explained.
The 1/4" thick balsa sheet sides are completed with 1/4"square longerons and uprights. 2 identical sides are constructed and then joined into the basic box section (Over the plan view on sheet 2).
Formers are added and forward areas are sheeted with 1/8" thick balsa.
The rear outer longerons are 1/8" diameter dowels.(Strong and light and closer to scale shape than square balsa or hardwood)
Note that there is room for a full width cockpit and you can build a sliding canopy.(Details on sheet 3)
This view shows the E-Flite Power 160 installation and note that the batteries can be placed inside the cowl. or under the upper hatch that runs from former C1 to D2.
The Horizon Hobbies motor mount has plywood trays mounted top and bottom for the 2 -5S 18.5V 5000mAh Lipos. The OS ESC is also mounted here.
The cowl construction is described in detail on this page.
Balsa and ply formers are planked with 3/16"x 4"wide balsa. Spraying with Windex, on the outside, makes this task a little easier.
The cowl is split and one half is removable, giving access to the batteries that are held in place with Velcro straps.
The top wing is at 2 degrees incidence and the bottom wing is at 1.5 degrees. The theory is that the bottom wing stalls first while the top wing is still giving lift. ( Who knows if this happens, but I have used this set-up previously, with success.)
The tailplane is at 0 degrees,
Note that at the CG position, in the top wing, an anchor nut is built in.(See sheet4). A threaded hook can be inserted and the complete Gloster Gladiator can be suspended from this point.
The model can now be balanced fore and aft as well as laterally.
The servos can be mounted in the rear or in the forward fuselage. I chose to use the rear location and use the much shorter pushrods.
The rudder and fin are built on a 1/16" thick balsa core, flat on the plans, with ribs added, then removed from the building board and opposite side ribs are then added.
Robart hinges are used and the whole assembly is made to be removed. This makes sanding and shaping of the fin blocks a lot easier and replacement of the assembly, if damaged, a snap.
The landing gear blank and cabanes are made to order by TNT Landing Gear. You can fill in a form, on their web site and they will make them to order. The dimensions are shown on sheet 3. Material is 6061 T6 aluminum.
The wheels are 6" diameter Sullivan Skylite, with a balsa and ply outside cover.
It is a fairly simple canopy to construct from clear plastic sheet in 3 pieces. The rear fixed portion and the sliding part are simple forms and the windscreen has all flat sides. One challenging part is at the top of the windscreen. This is a small piece with compound curves that could be vacuum formed or maybe a balsa plug could be used to push form with low heat.
There is a canopy now available from the UK. Sarik Hobbies are offering it now and this is the canopy I used on the original. Click here to see details.
This view is used for building the basic "box" section fuselage and the tailplane and elevators.
These are built flat on the plans with a 1/16" balsa core.
The tailplanes can be removed and slide on a carbon fiber tube available from TNT Landing Gear.
The formers are made from 3 pieces each of 1/4"thick balsa or 1/8" thick ply and can be assembled flat on the plans.
This sheet shows all the fuselage cross sections as well as the landing gear and cabanes.
Note that the sections at G1 and L1 show a view looking forward on the left side and a view looking rearward on the right.
The upper wing is on sheet 4 along with the Bill Of Material (B.O.M.) Both panels are shown and the ribs and spars can be assembled flat on the plans
Sheet 5 has the interplane struts detailed. Both wings use carbon fiber tubes and the upper and lower outer panels can be removed as a unit. ( Using a temporary "Jury Strut"). This makes transportation easier and field assembly is quite quick for a large scale Gloster Gladiator!
These 3 sheets show all the cut-out parts, in balsa as well as plywood.
Parts are shown laid out on standard sheet sizes. For those who prefer to cut there own, you can cut out a complete paper template and glue stick it to the appropriate material and cut using a power fret saw or a hobby knife for the thinner balsa parts.
I much prefer to order the laser cut short kit from Bob Holman (See below). The material and quality of parts is first class and it certainly saves a lot of time!
Note that there are 670 total parts-that's a LOT of cutting in the workshop!
The last sheet gives various methods to power your Gloster Gladiator.
2 glow engine installations are shown, with the correct tank installations as well as a Zenoah G-38 gas engine.
The basic exhaust pipe is shown that can be hooked up to the glow engines and I intend to use them on my electric powered version with a smoke system hooked up for start-up simulation! ( I will also use a MRRCSound system)
The plans are now available in PDF format. You can buy using PayPal and print the plans locally.
Note that a set is 9 pages, each one 36"(914.4mm) wide X 75"(1905mm)long. All parts are shown full size and on separate sheets that can be cut-out and pasted to balsa and or ply for cutting out.(Or you can buy the set of laser cut parts-I did this and found they are of excellent quality and certainly saved a LOT of time!)
There is a comprehensive bill of material that lists all parts required and makes shopping for the bits and pieces a breeze!
I have been using Bob Holman for laser cutting for a while now and the quality is always first class and the choice of material is always perfect for the application. The material supplied is as follows-
Please note that the plans include a comprehensive Bill of Material (B.O.M.) that includes the extra materials required plus all the hardware ( Including nuts and bolts!) In all a total of 346 items are listed.
Take a look at this page for more details on the RC Gladiator