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Please take a few moments to read this instruction manual before beginning 

assembly.  We have outlined a fast, clear and easy method to assemble this 

aircraft and familiarizing yourself with this process will aid in a quick, easy 

build. 

 

Please  read  the  following  paragraph  before  beginning 
assembly of your aircraft!  

 

THIS IS NOT A TOY!  Serious injury, destruction of property, or even death 
may result from the misuse of this product.  Extreme Flight RC is providing 
you,  the  consumer,  with  a  very  high  quality  model  aircraft  component  kit, 
from which you, the consumer, will assemble a flying model. It is beyond our 
control to monitor the finished aircraft you produce.  Extreme Flight RC will 
in  no  way  accept  or  assume  responsibility  or  liability  for  damages  resulting 
from the use of this user assembled product. This aircraft should be flown in 
accordance  with  the  AMA  safety  code.    It  is  highly  recommended  that  you 
join  the  Academy of  Model  Aeronautics  in  order  to  be  properly insured and 
operate  your  model  at  AMA  sanctioned  flying  fields  only.    If  you  are  not 
willing  to  accept  ALL liability  for  the use of  this  product,  please  return it to 
the place of purchase immediately.  

 

Extreme Flight RC, Ltd. guarantees this kit to be free of defects in materials 
and  workmanship  for  a  period  of  30  DAYS  from  the  date  of  purchase.    All 
warranty  claims  must  be  accompanied  by  the  original  dated  receipt.  This 
warranty  is  extended  to  the  original  purchaser  of  the  aircraft  kit  only.  
Extreme Flight RC in no way warranties its aircraft against flutter.  We have 
put these aircraft through the most grueling flight tests imaginable and have 
not  experienced  any  control  surface  flutter.    Proper  servo  selection  and 
linkage set-up is absolutely essential.  Inadequate servos or improper linkage 
set  up  may  result  in  flutter  and  possibly  the  complete  destruction  of  your 
aircraft.    If  you  are  not  experienced  in  this  type  of  linkage  set-up  or  have 
questions 

regarding 

servo 

choices, 

please 

contact 

us 

at 

[email protected] or 770-887-1794.  It is 

your

 responsibility to ensure 

the airworthiness of your model.  
 
 
 
 
 

Summary of Contents for Legacy Aviation Muscle Bipe

Page 1: ...Legacy Aviation Muscle Bipe Assembly Manual Copyright 2019 Extreme Flight ...

Page 2: ...autics in order to be properly insured and operate your model at AMA sanctioned flying fields only If you are not willing to accept ALL liability for the use of this product please return it to the place of purchase immediately Extreme Flight RC Ltd guarantees this kit to be free of defects in materials and workmanship for a period of 30 DAYS from the date of purchase All warranty claims must be a...

Page 3: ...y Ship the Muscle Bipe is our tribute to classic barnstormer airshow style aerobatics The Muscle Bipe features a quick assembly process that will help you get in the air fast and when powered with the recommended Torque 4016 500 motor is capable of the full range of classic aerobatic maneuvers If you are a fan of Biplanes and have nostalgia for the classic era of aerobatics the Muscle Bipe is for ...

Page 4: ...ecommended items to complete the Muscle Bipe 1 4 MKS HV69 servos and Extreme Flight RC 25T lightweight 1 25 servo arms 2 2 Hitec 7245 servos and Extreme Flight RC 24T lightweight 1 25 servo arms 3 Torque 4016 500 MKII motor 4 Castle Creations Talon 90 ESC 5 4 6 Extreme Flight RC 28AWG extensions 6 4 18 Extreme Flight RC 28AWG extensions 7 Aura Flight Control system 8 1 16X7 Falcon or Xoar electric...

Page 5: ...into the wing slot and then mate the aileron onto those hinges keeping little to no hinge gap Make sure the hinge remains centered see note while mating the aileron to the wing then apply thin CA to the hinge Normally a few small drops of thin CA onto the top and bottom of the CA hinge is ample then allow the CA to set up Do this on the 4 wing halves See figure 1 NOTE when installing CA hinges be ...

Page 6: ... fit any control horn Now trim the covering under the base plate make sure you do not trim beyond the base plate or cut thru the balsa Remove that covering and this will allow a balsa to base plate glue joint Once satisfied with the dry fit then using 30 minute epoxy put some in the slot and a light coating on the bottom of the control horn that will go into the slot and the bottom of the base pla...

Page 7: ...ard towards the leading edge of the wing and install the servo arm Take the short pushrods there will be 4 all the same length thread a ball link onto each end about 15 turns Locate 2 2mm by 10mm long allen head bolts 2mm washers and 2mm nylon insert nuts I like to begin at the control horn I install a washer onto the bolt then insert that thru the eye of the ball link then another washer and then...

Page 8: ...ar to the fuselage Begin by distinguishing which way the gear sweeps I do this by laying the mounting flat onto a table and eyeball or hold a straight edge such as a square and you will be able to identify which way the gear is swept The gear will mount with the sweep forward towards the motor Locate the 4 4mm bolts and washers apply a small amount of blue thread lock and then bolt the gear to the...

Page 9: ...t and washer Slide the tire onto the axle then fit the pant over the tire axle assembly and you will notice the pant has a notch that fits to the gear Center the tire on the axle so there is no rubbing as the tire spins mark this spot then take the pant off and secure the collar to the axle Use blue thread lock on the small set screw in the wheel collar Using a file to make a small flat spot for t...

Page 10: ...Figure 7 Figure 8 ...

Page 11: ...ot point of the bracket has to be centered to the rudder hinge line Once the fit is correct use a centering drill or similar to make pilot holes then install the 2 small wood screws and tighten We will secure the tiller arm portion to the bottom of the rudder later in the assembly process be sure to save that 3rd wood screw for that process See figure 11 TIP applying a small drop of thin CA to eit...

Page 12: ...Figure 10 Figure 11 ...

Page 13: ... fuselage the other end will attach to the wing Begin by inserting the two hole end into the fuselage and install the bolts be sure to use blue thread lock Do this to all 4 struts then mount the upper wing center section to those struts It may require slight trimming to accommodate this attachment See figures 12 13 and 14 Figure 12 Figure 13 ...

Page 14: ...Figure 14 ...

Page 15: ...ation of the horizontal stabilizer be sure the top side is up one way to tell is to look at the covering scheme and make sure it matches the wings such that you have the proper side upright Remove the stabilizer and use 30 minute epoxy to glue the stabilizer to the slot reinstall the stabilizer and allow to fully dry Now hinge the elevator to the horizontal stabilizer using the same methods as did...

Page 16: ...Figure 16 Figure 17 ...

Page 17: ...Figure 18 Figure 19 ...

Page 18: ...ert the CA hinges into the vertical stabilizer then slide the rudder onto those hinges to complete the process Locate that remaining tailwheel screw and insert it into the tiller arm then into the bottom of the rudder Now install the control horn for the rudder and this will complete the rudder installation See figures 20 and 21 Figure 20 Figure 21 ...

Page 19: ... the pushrods start by threading them about 12 15 turns now center your servos with your transmitter the longer of the two pushrods is for the rudder the shorter of the two is for the elevator Next install the servo arm we used Extreme Flight RC 1 25 lightweight arms as shown in figure 19 With the control surface centered trial fit the pushrod and see if it fits if not turn the ball link on each e...

Page 20: ...Figure 23 ...

Page 21: ...ctions and figure below The firewall is already spaced for this motor simply locate the 4mm mounting bolts washers and bolt the motor to the firewall blind nuts are already installed so just apply some blue thread lock We used the Castle Creations Talon 90 ESC you will need to resolder the motor bullet connectors to use the CC Talon 90 as it has bigger bullet connectors CC provides these with the ...

Page 22: ...Figure 25 Figure 26 ...

Page 23: ...Figure 27 Figure 28 ...

Page 24: ...necessary However it is wise to sand the areas that will mate to the bottom section of the cowling to enhance the glue joint We also suggest cutting a hole in the center of the piece to allow your choice of motor to protrude cut as necessary Once the trial fitting is satisfactory glue in place We used foam tac however epoxy welders adhesive as well as other adhesives will work We only glue the rad...

Page 25: ... wires from the upper wing center section into the fuselage There are holes in the wing and fuselage to run these extensions refer to figure 31 for our setup You can use black electrical tape or heat shrink to disguise these wires as they run along the struts Figure 31 ...

Page 26: ... It does not matter if you install the upper or lower wings first Once the wings are installed and bolted on using the 4 supplied 3mm bolts washers then install the struts The struts are installed by orientating the larger end on the lower wing Gently pull the top and bottom wing tips apart just enough to slide the strut into the slots for the I prefer to insert the top portion first then the lowe...

Page 27: ...Figure 33 Figure 34 We suggest a 16X7 propeller if using the Torque 4016 motor it can now be mounted to the motor and using the supplied prop nut yields a nice overall look ...

Page 28: ...ence There are two holes where the wing bolts are located the CG range is front of that hole to 1 behind the hole Move the 6S fore aft in the battery tray to the desired CG location See figure 35 for locating the CG range and figure 36 for our battery location Figure 35 Figure 36 ...

Page 29: ... instructions regarding the Aura 8 FCS We chose to run a separate receiver and setup up the gyro using the downloaded software This allows you to make all adjustments thru a computer directly into the Aura 8 Flying the Muscle Bipe this is not a dedicated 3D plane and as such excels at sport flying and classic aerobatic maneuvers You will find with a proper setup the Muscle Bipe is a very mild mann...

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