Clear Ultra Fine Detail Plastic
1/144 Boeing 747 Trailing Edge Flaps
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Product Description
Full set of trailing edge flaps for 1/144 scale Boeing 747. Can be used for -747-100, -200, -300 or -400 kits.
This is designed for the Revell 747-400 kits, but could be used on the Airfix 747 kits as well.
Modeller must trim out the flaps on the kit wings to install these flaps. Flap track fairings on the kit must be retained for use in this conversion.
What is included:
Inboard forward, mid and aft trailing edge flaps
Outboard forward, mid and aft trailing edge flaps
Mid flap carriage fitting
[u]Flap Sections and Orientation:[/u]You will have 12 flap sections in total. Take the longer sections and shorter sections lay them out with the thickest section flap in the center of each (see image below as a guide). This is the mid flap.
The three flap parts will slide together to form a single section that is similar to what you should have cut out of the wing. Note - when cutting out the flap sections from the wing, the upper wing surface panel line shows a single flap section and the lower shows two. When trimming out the lower, leave the flap faring in position initially.
The shorter flap sections are inboard flaps. Take one of the inboard flaps and orientate against your model wing so the flat side of the flap is lower and the bulged side is upper. This will indicate now if you have the left or right side inboard mid flap. Repeat this process until you have all four mid flaps laid out.
Take the thinner flap section that corresponds in length to the mid flap and you will see, like the mide flap, there is also a flat side. Orientate this using the shape of the flap as a guide to work out whether it is the left side or right side. Here is an illustrated guide that will help you:
If you are setting up the flaps for a landing configuration, you will insert four rods into the mid flap part. I will cover this shortly. The fore flap is the remaining flap section that is curved aerofoil in shape on both sides. When retracted, this flap is not visible from the upper or lower side of the wing. When fully extended the configuration is as below:
Use the illustration above to calculate your angles. This was from a Boeing 747 document and (speaking as a aero engineer with over a decade on the type) is accurate for your model.
[u]Fabrication of the flap tracks:[/u]
The tracks are made from "I"section styrophone or brass rods (not supplied). I used the smallest I Beam that Evergreen make. It should be 1.5 mm. You will see the flap fairings have a recess on the model. use these as a guide for the length and also the point of attachment to the wing. The track end is curved down and should be no longer than where the fairing starts sloping down at the aft end. Use heat to tightly curve the I beam down, and trim off tip using this illustration as a guide:
Trim off your flap fairings and glue the tracks in place ENSURING they are angled in the same position at the fairings were, and are flat and parallel to the lower surface of the wing. Re-attach the fairings now at an angle of 35 degrees. You need to do this with the lower wing half flat on your work surface and take the 35 degree angle from the work surface. Fill the gap that the 35 degree angle has formed between the forward and aft or the fairing and sand smooth for paint.
[u]Flap Fitting:[/u]The flaps attach to the wing from the main flap by means of flap carriages. The fore flaps fit to the forward section of the carriage and are on guides that recess into the forward section of the main flap. The aft flap for easy of the kit, it attached to the main flap with 4 previously mentioned square section rods (not supplied).
The flaps are fitted to the tracks using the carriage fittings supplied in the kit. There should be 8 carriage fittings. They are installed into the recesses on the lower side of the mid flap and are orientated forward at the corresponding angle of the tracks. You may want to dry fit the carriages on the tracks and then attach the mid flap to them in this position to ensure you have them correctly angled. It is very important the angles correspond or the flaps will not sit correctly.
Once the carriages are attached correctly, the aft flap should be fitted. The aft flap has the four trimmed out sections on the leading (forward facing) edge. Turn over a mid flap section and you should see four corresponding .5mm x .5mm square recesses in the aft section of the flap.
Insert QTY 4 0.5mm section styrofoam or brass rods into the mid flap recesses and when set, trim the sections to approximately 1.5mm proud of the mid flap. You will need to trim further to get the aft flap in the correct position. The trimmed out sections of the aft flap are attached to these rods leaving a uniform slotted gap between the two flaps of around 0.25mm with an angle between the mid and aft flap of 15 degrees (this is maximum flap deployment per the illustration above with flaps at detent 25). *You may find it helpful to make a jig for this.
[u]The leading edge flaps must be cut out now if you are installing them.[/u]
Trim out the leading edge sections which are clearly scribed on the kit lower wing surface. The inboard krueger flaps are closest to the fuselage and there are three per side.
The variable camber flaps are from the inboard pylon going outboard in two sets of 5.
It is easier to trim out the flap including the small section of leading edge forward of the flaps, then carefully trim this strip off and glue it back on the wing when you put the two halves together. It is important that this piece is retained and re-attached!.
Glue the two wing sections together at this point then, once set, dry fit the inboard and outboard flap assemblies and orientate the fore flap into position until you are happy with the open slot widths and angles of all the flaps relative to each other and the wing. Once you have the positions as you need them, use tape to hold the positions and then glue the inboard and outboard flap assemblies and the fore flaps into position. The trailing edge flaps are basically done.
(I added small steel rods to my kit to replicate the screw drives that extend and retract the flaps)
This is designed for the Revell 747-400 kits, but could be used on the Airfix 747 kits as well.
Modeller must trim out the flaps on the kit wings to install these flaps. Flap track fairings on the kit must be retained for use in this conversion.
What is included:
Inboard forward, mid and aft trailing edge flaps
Outboard forward, mid and aft trailing edge flaps
Mid flap carriage fitting
[u]Flap Sections and Orientation:[/u]You will have 12 flap sections in total. Take the longer sections and shorter sections lay them out with the thickest section flap in the center of each (see image below as a guide). This is the mid flap.
The three flap parts will slide together to form a single section that is similar to what you should have cut out of the wing. Note - when cutting out the flap sections from the wing, the upper wing surface panel line shows a single flap section and the lower shows two. When trimming out the lower, leave the flap faring in position initially.
The shorter flap sections are inboard flaps. Take one of the inboard flaps and orientate against your model wing so the flat side of the flap is lower and the bulged side is upper. This will indicate now if you have the left or right side inboard mid flap. Repeat this process until you have all four mid flaps laid out.
Take the thinner flap section that corresponds in length to the mid flap and you will see, like the mide flap, there is also a flat side. Orientate this using the shape of the flap as a guide to work out whether it is the left side or right side. Here is an illustrated guide that will help you:
If you are setting up the flaps for a landing configuration, you will insert four rods into the mid flap part. I will cover this shortly. The fore flap is the remaining flap section that is curved aerofoil in shape on both sides. When retracted, this flap is not visible from the upper or lower side of the wing. When fully extended the configuration is as below:
Use the illustration above to calculate your angles. This was from a Boeing 747 document and (speaking as a aero engineer with over a decade on the type) is accurate for your model.
[u]Fabrication of the flap tracks:[/u]
The tracks are made from "I"section styrophone or brass rods (not supplied). I used the smallest I Beam that Evergreen make. It should be 1.5 mm. You will see the flap fairings have a recess on the model. use these as a guide for the length and also the point of attachment to the wing. The track end is curved down and should be no longer than where the fairing starts sloping down at the aft end. Use heat to tightly curve the I beam down, and trim off tip using this illustration as a guide:
Trim off your flap fairings and glue the tracks in place ENSURING they are angled in the same position at the fairings were, and are flat and parallel to the lower surface of the wing. Re-attach the fairings now at an angle of 35 degrees. You need to do this with the lower wing half flat on your work surface and take the 35 degree angle from the work surface. Fill the gap that the 35 degree angle has formed between the forward and aft or the fairing and sand smooth for paint.
[u]Flap Fitting:[/u]The flaps attach to the wing from the main flap by means of flap carriages. The fore flaps fit to the forward section of the carriage and are on guides that recess into the forward section of the main flap. The aft flap for easy of the kit, it attached to the main flap with 4 previously mentioned square section rods (not supplied).
The flaps are fitted to the tracks using the carriage fittings supplied in the kit. There should be 8 carriage fittings. They are installed into the recesses on the lower side of the mid flap and are orientated forward at the corresponding angle of the tracks. You may want to dry fit the carriages on the tracks and then attach the mid flap to them in this position to ensure you have them correctly angled. It is very important the angles correspond or the flaps will not sit correctly.
Once the carriages are attached correctly, the aft flap should be fitted. The aft flap has the four trimmed out sections on the leading (forward facing) edge. Turn over a mid flap section and you should see four corresponding .5mm x .5mm square recesses in the aft section of the flap.
Insert QTY 4 0.5mm section styrofoam or brass rods into the mid flap recesses and when set, trim the sections to approximately 1.5mm proud of the mid flap. You will need to trim further to get the aft flap in the correct position. The trimmed out sections of the aft flap are attached to these rods leaving a uniform slotted gap between the two flaps of around 0.25mm with an angle between the mid and aft flap of 15 degrees (this is maximum flap deployment per the illustration above with flaps at detent 25). *You may find it helpful to make a jig for this.
[u]The leading edge flaps must be cut out now if you are installing them.[/u]
Trim out the leading edge sections which are clearly scribed on the kit lower wing surface. The inboard krueger flaps are closest to the fuselage and there are three per side.
The variable camber flaps are from the inboard pylon going outboard in two sets of 5.
It is easier to trim out the flap including the small section of leading edge forward of the flaps, then carefully trim this strip off and glue it back on the wing when you put the two halves together. It is important that this piece is retained and re-attached!.
Glue the two wing sections together at this point then, once set, dry fit the inboard and outboard flap assemblies and orientate the fore flap into position until you are happy with the open slot widths and angles of all the flaps relative to each other and the wing. Once you have the positions as you need them, use tape to hold the positions and then glue the inboard and outboard flap assemblies and the fore flaps into position. The trailing edge flaps are basically done.
(I added small steel rods to my kit to replicate the screw drives that extend and retract the flaps)
Details
What's in the box:
1/144 Scale Boeing 747 Trailing Edge Flaps
Dimensions:
Success Rate:
First To try.
What's this?
Rating:
Mature audiences only.
