BME Aircraft PAU Pitts User Manual Download Page 4

balsa tri-block on the corner of the fire wall and box side wall. Install the 
gas tank before the fire wall is glued on. 

d.

 Drill and install dowels from the box side wall into the fire wall. 

 

  e. 

The length from fire wall to 

the front surface of prop hub 
should be 5 3/4”. Install hard wood 
block between fire wall and engine 
mounting plate if necessary. 
 

3. Landing gear--- 
    a. 

Screw the wheel axles onto 

the landing gear. Then install 
wheel using collars to secure 
wheel on the far end of the axle. 
   

b.

 Mark and drill holes for axle 

and screws according to the 
pre-drilled holes on the landing 
gear. 
   

c. 

Install 4-40 T-nuts to the 

inside of the wheel pants for wheel 
pant holding screws. 

    d. 

Cut a axle access as the photo 

shown above. 
   

e. 

Put both wheel pants on and 

secure them with 4-40 screws 
remember to use washers and 
spring washers.   

     

 

4

Summary of Contents for PAU Pitts

Page 1: ...s step by step instruction manual and follow the steps when assembling I Before assembling 1 Parts check list When you open your box of 27 Challenger check all parts inside They should include as foll...

Page 2: ...covers the opening like servo mount hinges etc II Start assembling A Fuselage 1 Center cabane a Find 4 pcs of aluminum center cabane from the bags There should be two longer ones and two shorter ones...

Page 3: ...re wall bottom and the vertical center line To achieve a 3 degree thrust angle you must calculate the offset distance according to the length from the hub to the mounting plate For a 50 cc engine the...

Page 4: ...and engine mounting plate if necessary 3 Landing gear a Screw the wheel axles onto the landing gear Then install wheel using collars to secure wheel on the far end of the axle b Mark and drill holes f...

Page 5: ...e edge of the canopy b Drill three small holes same size as the screws you d use on each side of the canopy c Apply plastic glue along the inside of canopy frame then put back to where it should be an...

Page 6: ...the lower wing then insert the stab Measure the distance between wing rear tip and stab front tip on both side CA glue the stab when the measurement is equal f Insert vertical fin into the slot Draw a...

Page 7: ...Prepare 6 strips of the paper card 1 x 5 Drill a hole that a 4 40 size screw can go through b Align the hole on the paper strip with the hole on the tab and tape the other side of the paper strip c M...

Page 8: ...joiners from the bags There should be two wing joiners one is a hard wood rectangular strip and the other is a triangle balsa and hardwood laminated strip Also find the upper wing center piece Try fit...

Page 9: ...ath the fuse Try fitting the belly piece in place Draw a line along the side of the belly Then cut out the covering film 2mm inside the line Peer off the cover and glue the belly in place with medium...

Page 10: ...band to hold upper and lower wing tight through wing struts Then measure the incidence of the upper wing It should be between 1 to 1 5 degree and both side should be the same If the incidence is not w...

Page 11: ...hrow a The CG should be located in front of the leading edge of the lower wing between 2 1 2 to the LE The starting point should be 1 1 2 in front of the LE b The recommended control surface throw is...

Page 12: ...12...

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