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Wallaby Mk2 

 

49.5in Span Electric Sports Model 4/500w Motors & 4-6 Channel RC Equipment. 

 

Designed by: Stan Yeo        

 

 

       Produced by: Phoenix Model Products 

 

Introduction 

 

 

 

The Wallaby Mk2 is a 4/5 channel electric power 
sports aerobatic model of simple design that has a 
spritely performance and is a bundle of fun to fly. 
With a typical 4/500w 3536 size motor the Wallaby 
is a delight to fly and has for us brought back happy 
memories of the original 1981 design powered by a 
Fuji 25 IC motor. The optional flaps are an added 
bonus for those who like to play with different 
control setups! The Wallaby Mk2 is a very capable 
model and can perform all aerobatic manoeuvres 
expected is this type of model. 
The all wood easy build construction follows the 
now well proven path of other models in our range. 

  

Radio Equipment Required 

 

The recommended radio equipment required for 
the Wallaby Mk2 is two metal geared micro servos 
i.e. Hitec HS82MG or the Ripmax New Power 
XL16HM or XL17HMB for the Ailerons/Flaps plus 
two standard size servos for the Rudder & Elevator 
with a 4/6 channel  receiver. For Flapperon 
operation a 6ch transmitter and 6ch receiver is 
required. 
 

Electrical Power Train 

 

The Wallaby requires a 3536 Brushless Motor  
rated at 400-500w and 1000 – 1300 Kv. A 50/60A 
Speed Controller (ESC) and a 2200 3S LiPo. The 
prototype used a 3536/06 1270Kv motor with a 60A 
ESC. 9x6in APCE propeller and a 2200mAhr 3S 
30C LiPo. With this set-up the Wallaby is more than 
adequately powered with typically flight duration of 
10 minutes.  If you use a different specification 
motor or a 4S battery then a different size propeller 
should be used. If you are unfamiliar with model 
electrics then please read the articles on our 
website 

www.phoenixmp.com

 .  

 

Tools / Materials Required 

 

The tools required to build the Wallaby Mk2 are a 
modelling knife with spare blades, a 2ft /1 Metre 
Straight Edge, a miniature David Plane,180 grade 

Wet & Dry sanding block and soldering iron. The 
glues used to build the model are white PVA wood 
glue, thin Superglue (please observe safety 
precautions) and a very small quantity of two part 
epoxy. We recommend using a polyester heat 
shrink film for covering such as Oracover/Profilm or  
the thinner more economic version Easycoat.  

 

Please Note: PVA is the recommended glue for 
nearly ALL wood joints, particularly when building 
the wing. Also for maximum glue joint strength we 
recommend lightly sanding laser cut edges before 
gluing. 

 

Building the Fuselage 

 

1.  Lightly sand the ply fuselage doublers with 180 

grade wet and dry to remove the 'release' 
agent. Remove dust with a small brush or 
vacuum cleaner. 

2. Using 

spirit

 based contact adhesive such as 

Uhu or EvoStik glue the ply nose doublers in 
position ensuring there is a left and right side. 
Motor side thrust and down thrust is built in 
consequently the right side is shorter than the 
left!!!  

3.  Mark out the position of formers F2 & F3 on the 

inside of the fuselage sides ensuring there is a 
left and right side. 

4.  Cut slot for Rudder and Elevator cable exits as 

indicated on plan (Both underneath Tailplane). 

5.  Glue strip longeron super structure including 

triangular support strips in the nose, Wingseat 
and ply wing dowel washers to fuselage sides. 

6.  Lightly sand edges of fuselage side to prepare 

gluing surface to receive top and bottom sheet. 

7.  Join fuselage sides together over the plan 

ensuring that both are straight and square. 

8.  Before removing fuselage from plan fit spruce 

trailing edge back-stop, top 4.5mm sheet at 
front and rear of hatch and rear top sheeting. 

9.  Fit Rudder and Elevator control rods. Control 

rods exit fuselage on opposite sides. Anchor to 
fuselage sides every 100-120mm using scrap 
balsa. Superglue in place. Before fixing control 
cables check control cables are not binding 
and move freely. Tie and glue control rods 
together where they cross. 

10. Dry fit Undercarriage to ply plate and drill 

1.5mm pilot holes for saddle clamp screws. 

11. Fit Fuselage bottom front and back including 

ply undercarriage plate using PVA glue. 

12.  Construct Hatch and fit as per diagram.  
13. Lightly  mark 

out centreline 
on tailplane 
ensuring it  is 
square to the 
hinge line.  

14. Glue 

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