: Build Log
4f200 & V200 - Upgrades, Repairs, Mods, build from parts
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Sep 15, 2012
, 08:06 PM
IHW Heli Division
United States, FL, Palm Coast
Joined Mar 2012
4F200 Parts Build - The Airframe
4F200 Parts Build - The Airframe
The information in this post will be updated at a later date. For now i just wanted to get the pictures uploaded.
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Okay, first we have to assemble the tail drive assembly. Just like how the tail rotor shaft was assembled. This time i will use my Walkera gear puller as a press instead. As shown i press the gear cap onto the gear with it.
Being sure not to damage the bevel on the bottom of the gear cap.
Install the second gear cap on the tail drive assembly's shaft. Then try to press the pulley on by hand as best you can, as shown.
Remove any pin from the puller and tighten the grub screw back down.
The shaft is not long enough to reach the bottom, like the tail shafts can.
You can't press it though like this. But lucky for us there is a key hole!
Using a 0.9mm hex key or pin of some kind. You can prop the shaft up so you can now press it. When pressing be careful to to press to far. Just get it up against the edge of where the flat "key mark" ends and stop.
This is how it should end up.
install the key pin and plastic gear now.
The completed tail drive assembly.
here are the rest of the parts that will be used. Go ahead and install the top bearing block for the main shaft and the bottom tray for the servos now. As shown on the frame in this picture.
Attach the tail boom as shown.
For now i used two screws to hold the tail box together while i get the rest of the heli together.
hook the tail drive assembly on the tail belt as shown.
Insert the tail drive assembly into the servo shelf bearing and line up the bottom bearing block/aluminum frame piece. As shown in the picture. We will then screw down the other side of this block. But only the one screw under the gear for now.
We can now start installing the aluminum braces. The first one is shown in the picture at the top of the battery tray.
The other aluminum braces get installed at the middle and bottom of the battery tray. Also on the bottom for the skids and bottom shelf. Except the one in the back. We will install that later with the tail brace rods.
Install the bottom shelf.
Here is what this side should look like at this point. All the aluminum braces installed. At this point we are ready to close up this side of the heli. So take those two temporary screws out of the side of the tail boom.
Start screwing everything down. With this ASC1596 thread lock i'm using. I like to use lots. It never gives me a problem removing them.
Install the big metal wire management bracket here for the servo wires.
Install the little metal wire management bracket here for the ESC wire.
Install the battery shelf as shown.
We need to install these hardwares now.
Battery brace and servo bracket and the screws to install.
You may opt out of installing the battery try brace so that you can fit a longer pack on the shelf. But you may also want to add a good way of holding your pack from sliding off the nose too. Scorpion straps hold pretty good. Velcro and a custom shelf cou
Using a pair of needle nose pliers. Hold the servo bracket in place as shown. (it may have been easier to install this earlier, oops)
Screw down both screws with thread lock.
This is what the servo bracket looks like from inside the heli.
This is what you should have by now.
Where the canopy standoffs are installed.
a little thread lock never hurts.
We have to install the
Okay, time to install that last aluminum brace and the tail rods.
install the hub as shown.
Then attach the CF rod and opposite end to the horizontal tail brace.
Assemble the anti rotation bracket for the swash as shown.
Assemble the skids as shown.
Install the skids using the 4 long screws.
At this point the airframe is now complete.
Last edited by IntegrityHndywrk; Jan 03, 2013 at