Advertisement
Quick Links
(for the HET-RC Mini Air Retract System)
The MiG-29 Retract Kit was designed to allow the easy installation of
the HET-RC mini Air Retract system into the twin EDF MiG-29.
We recommend to install the retract kit before starting to build any
other part of the plane as this will greatly ease the installation.
Before you start building the MiG-29 please go through the
instructions on the following pages and study the pictures and
building guidelines carefully. Please also study the main MiG-29
construction manual as it will give you further hints which will ease
You will find that the plane is very easy and quick to build.
JOINTLY DEVELOPED WITH
WWW.RC-WARBIRDS.COM
MiG-29 Retract Kit
the building process.
Page 1/16
Advertisement
Summary of Contents for RC WARBIRDS MiG-29 Retract Kit
- Page 1 MiG-29 Retract Kit (for the HET-RC Mini Air Retract System) The MiG-29 Retract Kit was designed to allow the easy installation of the HET-RC mini Air Retract system into the twin EDF MiG-29. We recommend to install the retract kit before starting to build any other part of the plane as this will greatly ease the installation.
- Page 2 Items required to complete the retract kit installation: • 30 min epoxy • Milled fiberglass • Drill (e.g. Dremel tool) with 1, 1.5 and 2mm drill • X-acto Knife • Sandpaper (220-180) • 1x HET-RC 9gram Servo (switched retract valve) •...
- Page 3 The retract kit includes the following items: 1x Nose wheel 1x Nose wheel strut 2x Main wheels 2x Main wheel strut 1x Nose former set including: 1x Forward former (3mm) 2x Retract plates (4mm) 1x Rear former (3mm) 2x Main former set with each including: 1x Forward former (3mm) 1x Rear former (3mm) 2x Support brace (3mm)
- Page 4 Step 1: Nose retract preparation The nose retract mount consists out of the Dry fit the ply parts together as shown in parts shown above. the picture above. Take care that the retract In addition to the ply formers included in mounting plates are installed in the correct the kit please cut two 7cm long pieces from direction.
- Page 5 Once all holes are drilled install both Install the included nose gear wire and retract unit and steering servo. steering arm. Both items need to be removed again later so do not tighten them to much. Cut 2x 40cm from the supplied pull-pull For a stronger hold loop the end of the pull- cable and pull one through each of the pull wire one more time from the front...
- Page 6 Turn the retract unit around and install the Depending on the final model setup and pull-pull wire through the threaded required weight distribution for the correct couplers as described in the previous steps. center of gravity (CG) the retract valve can Ensure that the couplers are fixed far be installed into the model at a later stage enough back to allow slop free but not to...
- Page 7 Step 2: Main retract preparation Each main retract former consists out of the Slot the 4x 3mm ply wood parts together as parts shown above. Before you begin shown above and glue with 30min epoxy. please read through this section and dry fit Notice the difference between the 2 main all components.
- Page 8 Once all parts are dry, fit the retract unit Drill the retract mounting holes (2mm drill) and mark the position of the mounting and secure the retract unit in place. holes. Ensure that the retract cylinder Remove the retract unit. The main retract points towards the former with the wire cut mounting plates are now ready for out as shown above.
- Page 9 Step 3: Retract cut outs Before the retract mounts can be installed in the fuselage the necessary retract cut outs have to be made in the fuselage. We recommend to use a Dremel cutting disk and drum sander to make the necessary cuts. NOTE: As this process creates very fine epoxy/glass dust, the cutting has to be done in a well ventilated area.
- Page 10 Mask the remaining area as shown above and in the template. (The cut out shown is from the right hand side of the model viewed from below) Cut the marked area with a Dremel cutting Remove excess glue where required until disk and drum sander.
- Page 11 Nose Retract Unit The above cut out hast to be made for the nose retract unit. Measure the center of the fuselage at the Measure 1.5 cm (15mm) from the center height of the air intake. and 3cm (30mm) towards the tail of the plane.
- Page 12 Before the nose retract mount can be glued it is required to roughen the surface of the fuselage on to which the formers are glued. Trial fit the nose retract mount and sand the areas with 180-220 sand paper. Once done glue the former in place with 30min epoxy and milled fiberglass. NOTE: Ensure that no glue touches the pull-pull cable or runs into the airtube.
- Page 13 Step 4: Final Installation Before the air retracts can be installed the airtube needs to be measured and cut to length. The following instructions are one example of how the airline can be installed. Depending on your final setup and positioning of the battery and RC equipment you might want to use a different method.
- Page 14 Install the nose gear wheel. Ensure it can Install main gear wires and wheels. Ensure turn without binding. Mark the position of the wheels can turn without binding. Align the wheel collar and file a flat spot on the the wheels and mark the position where the gear wire where the wheel collar screw retract grub screw touches the retract wire.
- Page 15 As last step the retract valve and servo, air tank and filler valve have to be installed. Above picture shows the installation in our prototype model. It is recommended to only install these items once the rest of the model has been completed as this will make correct CG positioning easier.
- Page 16 Step 5: Final check Ensure that all retract units operate smoothly without binding. If necessary bend the gear wire to ensure smooth operation. To reduce the speed with which the retract unit operates (only for gear up movement), install the additional supplied 3mm wheel collar over the airtube directly between air tank and retract valve (do not install the collar on the side of the air retract or between air tank and filler valve) .
Need help?
Do you have a question about the MiG-29 Retract Kit and is the answer not in the manual?
Questions and answers