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MiniTwin 250

MiniTwin 250

MiniTwin 250

MiniTwin 250

MiniTwin 250

®

- by Acer

ASSEMBLY INSTRUCTIONS

Thank you for choosing the MiniTwin 250 as your next project.  This kit is easy to build and
only requires a few hours to complete.  Once finished, you will be rewarded with a stable,
FAST, fun to fly wing that you can take anywhere.  It is the perfect “take to work” plane to fly
on those lunch breaks or to stop by the park on the way home.  Although this kit isn’t
recommended for beginners because of its high speed and agility, once you master the basics
of flying R/C planes you can handle this plane.  Well lets get started.  Below is a list of supplies
and tools needed to complete the MiniTwin 250.

Supplies

• Velcro Tape (for battery attachment)
• Dubro Micro EZ-Connects (for servo horns)
• Pen
• 5 minute epoxy
• 320 grit sand paper (or equivalent)
• Hobby knife
• Dremel Tool (optional)
• Thin CA (superglue)
• CA Accelerator (optional)
• Two sided foam tape (for servo anchor)
• 3M #600 3/4" tape (for hinges)
• Covering tape or Low Heat iron on covering
• 3M 77 Spray Adhesive
• 1" wide fiberglass strapping tape (found at Home Depot)

Radio Equipment

• Micro receiver (GWS 4P , Berg 4 DSP)
• Micro Servos - 2 ( HS-55 recommended)
• Small Speed Control (20 amp) or 2,7-10 amp speed controls for Rudder Operation
• 7-cell NiMh Battery (KAN 1050) or 2, 2-cell 1200-2100 LiPoly batteries or 2-cell     2100

Thunder Power LiPoly

• V-tail mixer (optional for Rudder operation if you don’t have a mixing Computer  Radio)

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Summary of Contents for SpeedWing MiniTwin 250

Page 1: ......

Page 2: ...low is a list of supplies and tools needed to complete the MiniTwin 250 Supplies Velcro Tape for battery attachment Dubro Micro EZ Connects for servo horns Pen 5 minute epoxy 320 grit sand paper or equivalent Hobby knife Dremel Tool optional Thin CA superglue CA Accelerator optional Two sided foam tape for servo anchor 3M 600 3 4 tape for hinges Covering tape or Low Heat iron on covering 3M 77 Spr...

Page 3: ...ned to the shape of the wing core and that the two cutouts at the back are on both top and bottom of the wing 4a Once that is dry epoxy the left and right wing cores to the assembly Before the epoxy dries make sure that the wing cores line up Wait for the epoxy to dry Lightly sand the leading edge so that it is rounded 5 Mark the areas where you will recess your radio gear You can put the gear whe...

Page 4: ...all the radio gear making sure that your servos are centered and that the servos move in the right direction for elevon operation To do this make sure the left aileron makes the left elevon move up and the right elevon move down right aileron makes the right elevon move up and the left elevon move down up elevator makes both elevons move up and down elevator makes both elevons move down Also make ...

Page 5: ...y if not cut some more 1a Place one of the lengths of carbon fiber tape through one of the holes in the rear portion of the mount Leaving about 1 overlap past the wing on both ends cut the CF tape to length MAKING SURE TO LEAVE THE 1 OVERLAP AT BOTH ENDS Using some masking tape secure one side of the CF tape down tightly to one side of the core NOT ONTO THE WING ITSELF Stretch the other end of the...

Page 6: ... slots in the motor mounts with 5 minute epoxy 5 Now use a sharp xacto and cut the excess foam out from behind the wing joiner on the center core Covering the Wing You can cover the wing any way you want If you are going to use iron on covering make sure to use LOW HEAT covering material Econokote Solite For simplicity I prefer to use colored packing tape like that used on other wings I ll give yo...

Page 7: ... front of the elevon for clearance 6 Lightly spray the elevon with 77 spray and let dry if you are using iron on covering don t spray Cover the elevon with the colored tape you used for the bottom of the wing 7 Now attach the elevons to the top of the wing using 3M 600 3 4 tape Bend the elevons to their maximum deflection before taping to the wing Also put a couple of small strips of tape 2 on the...

Page 8: ...he pushrod and make another z bend Then insert the z bend into the control horn of the servo I recommend the Dubro EZ Connects as it makes for a MUCH simpler setup 3 The battery is attached using Velcro I suggest the use of Industrial strength Velcro as it is much stronger First lightly paint some 5 minute epoxy in the battery bay you can thin the epoxy by using denatured alcohol and let dry Then ...

Page 9: ...mount of reflex to fly Make sure the rubber prop adapter doesn t touch the motor To launch the wing grasp the back of the wing in the center and toss then start the motor after it leaves your hand There is no need to give it full throttle as it will fly at 1 4 throttle Trim it for level flight LIGHTLY oil the motor at both bushings after every 2 hours or so of flight This will extend the motor lif...

Page 10: ...computer mixing you have to go into the programming mode on your computer and use Premix 1 and Premix 2 Here s how they are set Mixes Master Slave Settings Premix 1 Premix 2 Channel 3 Channel 4 Channel 4 Channel 3 100 U 100 D 100 L 100 R V Tail Mixing If you don t have a computer radio you can use a simple V Tail mixer to create differential thrust The GWS V Tail mixer available on our website wor...

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