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Mini 4-Fitt Assembly and
Setup Manual
Specifications
Recommended Power System
(Click here to
purchase)
10g to 15g, 2000kv Brushless Outrunner
Wingspan
18"
Motor
Overall Length
14.1"
ESC
10A Brushless
Servos
2x 3.6g servos
2
Wing Area
144 in
Prop
5"x3" Electric
Flying Weight
3.125oz / 89g
Receiver
At least 4-channel
Intended Use
In/Outdoor/Combat
Battery
300mAh to 450mAh 2S 25C+ LiPo
Revised 2016-01-21
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Table of Contents
Related Manuals for Sawn Craft Mini 4-Fitt
Summary of Contents for Sawn Craft Mini 4-Fitt
- Page 1 Mini 4-Fitt Assembly and Setup Manual Specifications Recommended Power System (Click here to purchase) 10g to 15g, 2000kv Brushless Outrunner Wingspan 18” Motor Overall Length 14.1” 10A Brushless Servos 2x 3.6g servos Wing Area 144 in Prop 5”x3”...
- Page 2 Thank you from Sawn Craft. Thank you for purchasing the Sawn Craft Mini 4‐Fitt aircraft. This model was developed to be the adversary for our extremely successful Mini Mana‐Tee. Adding four vertical stabilizers located on the elevons just added to the fun! The lightweight and rigid XPS and carbon construction makes it possible for you to experience a wide performance envelope. This means that no matter how you like to fly, you’ll enjoy both stability and maneuverability without any sacrifice in precision or control feel. Your Sawn Craft Mini 4‐Fitt aircraft represents the benchmark of small‐sized electric combat performance and aerobatic versatility. All you have to do next is read and apply the information presented in this instruction manual. I sincerely hope that you enjoy building and flying your model as much as we do! If you have any troubles with these instructions or in the setup of your model feel free to contact us and we will provide you with the service you expect from a hobbyist‐owned and operated business. Jonathan Sawn Owner, Sawn Craft Jonathan@Sawn‐Craft.com ...
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Page 3: Table Of Contents
Table of Contents 1 Introduction 1 1.1 Style Conventions 1 1.2 Required Tools & Supplies 1 1.3 Required Parts for Completion 2 1.4 Included Parts Description 3 2 Assembly Instructions 4 2.1 Parts Preparation 4 2.2 Main Wing Half & KF Step Half Joining 5 2.3 Control Surface Installation 6 2.4 Carbon Spar & KF Step Installation 7 2.5 Fuselage Installation 8 2.6 Servo Installation 8 2.7 Firewall Installation 9 2.8 Electronics Installation & Fuselage Bottom Installation 10 2.9 Control Rod Installation 11 ... -
Page 4: 1 Introduction
Sawn Craft Mana‐Tee Manual 1 Introduction The contents of this manual assume the operator will have the following prerequisites: • Understanding of all appropriate safety procedures and requirements • The ability to follow written procedures and possess basic hobby building skills 1.1 Style Conventions Below are the important style conventions that will be used throughout the guide. Note: Key points or hints for success will be formatted in this manner. Warning: Any area that poses either a physical hazard or the danger will be formatted in this manner. Arrows inform where to perform the specified operation. Circled items inform of items of interest for the specified operation. Circled items will typically be accompanied by text further identifying the region of interest. 1.2 Required Tools & Supplies The list below contains all of the required tools and supplies that are required for the assembly and tuning of this model. • Clean, flat work surface • #11 hobby knife • Straight‐edge ruler • Soldering iron & solder • Heat gun • Wire cutters • Beacon Foam‐Tac •... -
Page 5: Required Parts For Completion
Sawn Craft Mana‐Tee Manual 1.3 Required Components/Parts for Completion The list below contains all of the required and recommended parts for the successful operation of this model. • Sawn Craft Mini Completion Kit o Turnigy C1822 2100kv motor o 10A Brushless ESC o 2x 3.6g Servos o 6‐Channel DSM2 Receiver o 5”x3” Electric Prop o JST Female Pigtail o Shrink tube, etc. • 300mAh to 450mAh 2S 25C LiPo Battery Please note that other power systems and components may be compatible and may work without issue, but the listed components have been tested successfully by Sawn Craft. Optional Parts for Completion To make your build easier and ensure the nicest looking finished product, the following products are offered on Sawn Craft.com. See the Building Supplies tab for these products. • Colored Packing Tape Page 2 160121 Mini 4‐Fitt Manual.docx ... -
Page 6: Included Parts Description
Sawn Craft Mana‐Tee Manual 1.4 Included Parts Description Please inspect your kit and ensure that all listed parts are present and undamaged. If you find missing parts or signs of damage please contact Support@Sawn‐Craft.com for assistance. e Main Wing Half (2 each) KF Step Half (2 each) Fuselage Half (2 each) Fuselage Bottom a Vertical Stabilizer (4 each) Elevon (2 each) Battery Tray d f Component Bag: Mini 4‐Fitt 1/8” Plywood Firewall a g Micro Control Horn (4 each) 4" Z‐Bend (2 each) Micro EZ‐Connector (2 each) 12” 0.083” Carbon Rod h i j l Page 3 160121 Mini 4‐Fitt Manual.docx ... -
Page 7: 2 Assembly Instructions
Sawn Craft Mana‐Tee Manual 2 Assembly Instructions The order of assembly presented in this instruction has been tested and it is recommended that you do not differ from them to provide the most accurate and easiest assembly possible. 2.1 Parts Preparation • • Parts Required: Tools Required: o All Foam Parts o Hobby Knife o Plywood Firewall Warning: This process involves using extremely sharp cutting blades. Care must be taken to avoid injury. Using your hobby knife, carefully cut all of the small holding tabs that are keeping the parts together inside the sheets. The tabs are less than full‐foam thickness and will not require much force to cut. Take the 200‐grit sandpaper and smooth the holding tabs and the edges of the Plywood Firewall. Page 4 160121 Mini 4‐Fitt Manual.docx ... -
Page 8: Main Wing Half & Kf Step Half Joining
Sawn Craft Mana‐Tee Manual 2.2 Main Wing Half & KF Step Half Joining • • Parts Required: Tools Required: o 2x Main Wing Half o Beacon Foam‐Tac o 2x KF Step Half Lay both Main Wing Halves on a flat surface with the machined carbon spar channel facing up. Apply glue to the entire mating surface of one of the halves then join the two, making sure that the alignment arcs are located properly and the halves fit nicely together. Allow assembly to cure while on the flat surface to ensure a straight wing. Lay both KF Step Halves on a flat surface. You will see the only way to assemble the two halves is by aligning the alignment arcs properly. Apply glue to the entire mating surface of one of the halves then join the two, making sure that the halves fit nicely together. Allow assembly to cure while on the flat surface to ensure a straight wing. Page 5 160121 Mini 4‐Fitt Manual.docx ... -
Page 9: Control Surface Installation
Sawn Craft Mana‐Tee Manual 2.3 Control Surface Installation • • Parts Required: Tools Required: o Main Wing Assembly o Hobby Knife o 2x Elevons o Straight‐edge Ruler Warning: This process involves using extremely sharp cutting blades. Care must be taken to avoid injury. Lay the elevon on the table with the leading edge facing you. Both elevons are mirrors of each other so orientation (L or R) doesn’t matter as long as you cut the bevel properly for the side. Use a hobby knife and ruler to cut a ~45° bevel into the leading edge of the elevon. Repeat for the other elevon. Place the Main Wing Assembly on the table with top side up. Align the elevons to their locations with their bevels facing down. The elevons are aligned to the edge of the wing. Using Blenderm tape, apply three small strips to either end of the control surfaces on the top side and two small strips from the bottom. Page 6 160121 Mini 4‐Fitt Manual.docx ... -
Page 10: Carbon Spar & Kf Step Installation
Sawn Craft Mana‐Tee Manual 2.4 Carbon Spar & KF Step Installation • • Tools Required: Parts Required: o Beacon Foam‐Tac o Main Wing Assembly o 200‐grit Sandpaper o KF Step Assembly o 12” Carbon Spar o 2x Plywood Control Horns Lay the Main Wing Assembly on the table facing up. Apply a bead of glue the entire length of the carbon spar recess in the wing. Place the carbon spar into the recess, ensuring that it seats evenly in the slot and has adequate glue to secure it. Allow the glue to cure for a few minutes before proceeding. Decide which side of the KF Step Assembly will be faced down and apply glue around the entire perimeter of the part as well as a zigzag down the center. Place the KF Step Assembly onto the Main Wing Assembly, ensuring to line up all edges. Allow the glue to cure for a few minutes before proceeding. Glue the control horns into their respective slots at this time. Use the sandpaper to gently round both sides of the leading edge of the new assembly to your liking. This is an ideal time to decorate the parts as they are still flat and will be easier to handle. We recommend using colored packing tape as it will add strength and durability as well as vivid color. See Section 3.5 for more detail. ... -
Page 11: Fuselage Installation
Sawn Craft Mana‐Tee Manual 2.5 Fuselage Installation • Tools Required: • Parts Required: o Beacon Foam‐Tac o Main Wing Assembly o Clear packing tape o Fuselage Half (2 each) o Battery Tray Turn the Main Wing Assembly such that the KF Step is facing down. Dry‐fit both fuselage halves into their mating slots in the Main Wing Assembly to ensure a good fit. Apply a bead of glue down the entire length of the flat edge of the fuselage half. Press the glued side of the fuselage half onto the main wing assembly, aligning all of the tabs with the slots in the main wing. Repeat this process for the other fuselage half, but not before gluing the battery tray into place, aligning the tab with the first fuselage half. 3) Add clear packing tape to the front half of the fuse side and bottom as it will give strength and protection from landing abrasion without much added weight. 2.6 Servo Installation • • Tools Required: Parts Required: ... -
Page 12: Firewall Installation
Sawn Craft Mana‐Tee Manual 2.7 Firewall Installation • • Parts Required: Tools Required: o Main Wing Assembly o Beacon Foam‐Tac o Mini 4‐Fitt 1/8” Plywood Firewall o Blenderm hinge tape Apply Foam‐Tac to the leading edge of the main wing assembly where the firewall will be attached. Take note of which side you would like your motor wires to enter through the slot, and press the firewall onto the front of the fuselage, ensuring that all of the firewall edges are flush with their mating foam surfaces. Allow glue to cure fully before installing motor. It is easiest to drill your motor mounting holes before attaching the firewall to the fuselage. Apply a long strip of Blenderm tape from one side of the fuselage, across the firewall, and to the other fuselage side. This will further lock the firewall to the fuselage in the event of an impact during combat. Page 9 160121 Mini 4‐Fitt Manual.docx ... -
Page 13: Electronics Installation/Fuselage Bottom Installation
Sawn Craft Mana‐Tee Manual 2.8 Electronics Installation/Fuselage Bottom Installation • • Parts Required: Tools Required: o Main Wing Assembly o Soldering Iron o Fuselage Bottom o Heat Gun o Motor, Receiver, ESC o Beacon Foam‐Tac Solder any necessary connectors to your motor and ESC, if needed, and install the motor to the front of the firewall using standard servo‐mounting screws like the ones that you didn't use from your servos on this model. Route the motor wires through the slot in the firewall and connect them to your ESC. Attach your ESC and receiver on either side of the inside of the fuselage. We recommend using Velcro for mounting to ease in adjustment and removal. Plug both servo plugs and the ESC plug into the receiver. Bind the receiver to your radio and ensure all functions are working now as it is more difficult to access the electronics once the fuselage bottom is installed. Apply glue to the exposed edges of the bottom of the fuselage sides and install the fuselage bottom, aligning all of the tabs into the slots. If you plan to fly streamer combat you may elect to put a small amount of clear packing tape on the rear portion of the fuse. This will allow you to tape the streamer to the airplane and remove the tape when completed with no damage to the airframe. Page 10 160121 Mini 4‐Fitt Manual.docx ... -
Page 14: Control Rod Installation
Sawn Craft Mana‐Tee Manual 2.9 Control Rod Installation • • Parts Required: Tools Required: o Main Wing Assembly o Beacon Foam‐Tac o 4" Z‐Bend (2 each) o Heat Gun o Micro EZ‐Connector (2 each) Install the Micro EZ‐Connectors to the outer‐most holes on your servo horns. Gently connect the Z‐bend side of the longest rod assembly to the control horn on the elevons. Slide the straight end of wire into the EZ‐Connector and center the control surface manually then tighten the grub screw to secure the rod to the servo. Page 11 160121 Mini 4‐Fitt Manual.docx ... -
Page 15: Vertical Stabilizer Installation
Sawn Craft Mana‐Tee Manual 2.10 Vertical Stabilizer Installation • • Parts Required: Tools Required: o Main Wing Assembly o Beacon Foam‐Tac o Vertical Stabilizer (4 each) o Winglet (2 each) Apply Foam‐Tac to slots in the rear of the elevons and glue the vertical stabilizers to the main wing assembly, making sure the stabilizer is pushed all the way forward. Wipe off any excess glue and allow to cure. Page 12 160121 Mini 4‐Fitt Manual.docx ... -
Page 16: 3 Setup And Tuning
Sawn Craft Mana‐Tee Manual 3 Setup and Tuning 3.1 Center of Gravity The CG of this plane is located approximately at the location of the carbon spar in the wing. Moving the CG fore and aft will dramatically change the handling of the plane so adjust to your liking. An aft CG will allow for slower, high‐alpha flight, but will be more unstable while a more fore CG will provide a faster, more “locked in” flight experience. Use the fore/aft location of the battery to adjust the CG without adding additional weight. 3.2 Control Throws & Expo By altering the amount of control throw the surfaces have you can fine‐tune the handling and performance. Below are the recommended settings as tested that will provide a successful flying experience. Throws are measured at the point farthest from the hinge. Control Surface Low Rate Throw Low Rate Expo High Rate Throw High Rate Expo Elevator 1/2in (70%) 30% 1in (100%) 45% Aileron 1in (70%) 30% 2in (100%) 45% The elevon control surfaces have built‐in differential so they will move more in the up direction than in the down direction. This helps to eliminate adverse yaw. Measure the throw on the elevon in the up direction. 3.3 Launching Launching this aircraft is very simple and is easy to do. Simply hold the airplane by the fuselage in one ... -
Page 17: Flying Tips
Sawn Craft Mana‐Tee Manual 3.4 Flying Tips This aircraft is designed to be the perfect “toss in the car” model for most fliers! The compact size allows it to fly in smaller parks and indoor flying venues, but the speed that it is capable of makes it a great choice for your local flying field as well. With smaller control throws and more expo, the 4‐Fitt is a great choice for newer pilots that are getting their feet wet with aileron controls. Turn the throws up and you get a plane that is extremely aerobatic and will perform axial rolls at an alarming rate! Landing the aircraft is simple; keep some throttle applied and as the plane nears the ground, pull back on the elevator to flare. We developed this model for club combat events and have found many pilots bringing them out on non‐ combat nights because they are just so much fun to fly! When we do fly combat we have used narrow‐ width (~0.5”) x 10’ crepe paper streamers attached with tape to the rear of the fuselage with no significant degradation in performance. In the “rare” case that a 4‐Fitt is involved in a mid‐air collision, the interlocking construction should provide your electronics and battery protection over other combat plane designs. Remember: Always follow the AMA safety guidelines! Never fly over people or animals. 3.5 Decorating/Finishing The beauty of this aircraft is that you have the opportunity to finish it with the look that you desire. We recommend using colored packaging tape (available on the Building Supplies section of our website) for decorating as it is easy to use, lightweight, and provides a nice, glossy finish. Water‐based paints have been used with good results as well. Prior to using any paints or markers, test on a scrap piece of foam to ensure that it doesn’t damage the foam. Remember that any weight you add to the airframe will affect its performance so keep heavy applications of paint and decals to a minimum. 3.6 Repairs & Spare Parts Due to this models design and light weight, it is surprisingly durable! If a part of the model is damaged it can typically be repaired using small pieces of packaging tape or by gluing using Beacon Foam Tac. If a part is damaged beyond repair, simply send us an email at Support@Sawn‐Craft.com as we have replacement parts available for purchase. Page 14 160121 Mini 4‐Fitt Manual.docx ...