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Hobby King H4 User manual

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Author: John Taylor, UK Page 1 of 4 Date: 7/2/2014
Hobbyking H4 Copter Multi-Rotor Quadcopter
Introduction
I’ve created these build instructions to help people through the build of this copter without having
the problems I found whilst building the model myself.
The diagram below shows the content of the kit as delivered.
Note: there were no build instructions in
the kit but I did find some helpful files on
the Hobbyking web site.
You will also need a straight screwdriver, a
H2.5 hex allen key and a 5.5 box spanner
or socket.
Assembly
The first thing I did was to asemble the top of the model as I realised if I assembled the main
fuselage first it would be difficult accessing the screws for the pillars holding the electronic mounts.
Parts required
You will need the top fuselage, this can be
identified by the extra holes for the post
mounts.
You’ll also need the 3 electronics mounts
and 12 plastic posts with screws both ends.
Screw the posts onto the upper fuselage
using some thread lock to ensure they do
not come loose from vibration.
Fit the electronics mounts but do not use
threadlock until you’ve fitted the electronics
and sure you do not need to removed the
plates again.
Author: John Taylor, UK Page 2 of 4 Date: 7/2/2014
The next step was to assemble the fuselage.
Parts required
The assembled top fuselage, bottom
fuselage, green strengthening tubes and 8
of the longer bolts and nuts.
Align the bolt holes and fit all 8 bolts.
Note: Threadlock is not required as the nuts
are lock nuts.
The next step was to fit the under carraige.
Parts required
The assembled fuselage, 2 legs and 4
shorter bolts with screws.
WARNING
I found that when fitting the engine mounts
the front legs made it very difficult to fit and
tightlen the inner bolt.
Front, engine mounts obstructed. Rear, engine mount bolts clear.
Author: John Taylor, UK Page 3 of 4 Date: 7/2/2014
My solution to this problem was to move the front undercarraige.
I marked out and drilled 2 holes as shown below.
Note: They align with holes in the top fuselage which allowed access to the heads of the bolts after
removing the front electronics plate.
The next step was to assemble the motor arms
Parts required
The 4 engine mount arms, 4 engine
mounts, 8 short bolts and nuts and the
green stickers.
Attach the sticker to the top of the engine mount arms, outer end
on the side with the smaller holes.
Punch a hold through the sticker and fit the engine mounts to the
arms.
Note: I forgot to do this until the end so had to remove the engine
mounts from the arms to fit them.
Author: John Taylor, UK Page 4 of 4 Date: 7/2/2014
Next step was to fit the engine mount arms to the fuselage
Parts required
The assembled fuselage, engine mount
arms and 8 long bolts with nuts.
Fit the outer bolts allowing the arms to
swing in tight to the fuselage.
Here’s the final assembly with green
stickers on the engine mount arms,
re-position undercarraige and folded out
engine mount arms.
Total weight once built 605 grams.
My next publication will include fitting the electronics.