Hi guys
Today, we will assemble the kit version of this WPL C14 Toyota Hilux Crawler.
The kit version comes with a better motor than the ready to run version
and with a standard 3 pin steering servo!
The used receiver / ESC comes from a WLtoys K989 rally car and fits perfectly
The STL data for all 3D printed parts in this video can be found on my Thingiverse page.
I don't like the galvanized frame.
So I decided to paint it in black.
After some sanding and degreasing, we are ready to paint
The next step is to assemble the axles.
They jammed a bit and I had to slightly shorten the joint
The grease for the bushings is included
This is the front axle and you can see the steering dogbones.
The crown gear touches the axle housing,
so we have to remove a bit of the housing
Now its turning nice and free and we can grease and mount the bevel gear.
The next step is to do the same with the rear axle.
Both axles are done
The steering linkages are now installed
Next step: assembling the axle carriers and the shocks
The spring is inside the shock and you can replace it, if you remove the top cover.
The preassembled suspensions can now be attached to the freshly painted frame rails.
Here you can also see the motor, the steering
servo and the central gearbox
Both frame rails are now screwd together and the result is a nice and sturdy frame
The next step is to attach the axle linkages to the frame
The screws, which are used to mount the axle to the carrier are too long
So I 3D printed some spacers and added them below the screw heads
The same procedure is done for both axles
The frame and the suspensions are now finished.
The suspension works fine.
Next step: mounting the central gearbox
The included tires are nice and soft.
So let's mount them.
Now we want to mount the steering servo which came with the kit.
To mount the servo horn, we have to move it
to the center position first.
A servo tester is used to do that.
A servo mounting screw and a grommet, which came with the kit
are used to connect the steering linkage.
But it doesn't really fit good.
So I decided to 3D print my own servo horn.
To keep the servo horn in the right orientation, I filed a flat to the servo shaft.
The grommet and the bushing go into the bore
of the steering linkage
The servo horn is attached to the servo shaft
and to the steering linkage
The entire steering mechanism is now assembled
Time for a test.
The movement is still a bit too much with +/- 45° servo angle
This receiver was left over from my K989 "Micro RC" conversion
I assume it will be perfect for this car.
So let's wire it up and see, what it does!
Looks good!
Thanks to the adjustable throttle duel rate, it's perfect for crawling.
But will it crawl?
Let's test it!
OK
Something is wrong here.
But what?
Yes, the headlight reflectors need some paint!
Look much much better now!
So now we can attach the front grill to the bumper
And then the bumper to the frame.
I think it doesn't look too bad with the paint!
Poor coke can car!
Of course we want black windshield rubber seals
Now the steering servo needs to be attached
So I 3D printed this clamp
It fits perfectly to the servo, which came with the kit.
The next thing to do is to make the battery wiring harness.
The piece on the left came from the K989
This is the test of the battery wiring
Now we want to branch off some 5V wires for the lights.
They are soldered to the servo supply pins of the receiver
This slot is required for the wires
Of course a crawler needs a waterproof receiver.
So it is conformal coated.
The coated receiver is now ready for reassembling
And now it's ready to be mounted in the car
A 100nF ceramic noise suppression capacitor is soldered across the motor terminals
The receiver is then attached to the servo clamp and the motor wiring is finished
This is the finished motor wiring
Next step: routing and securing the battery wiring.
The engine was not inserted deep enough in the gearbox
and the result was a grinding noise
Removing a bit of the housing allows to push it in deep enough for a proper gear mesh
To prevent it from sliding out again, it's secured with super glue
Now we are ready to mount the bed on the frame
To make some room for the wiring, we have to Dremel two slots in the front cover
Here you can see, why the slots are required
Of course we also want working rooftop lights
All 4 LED are wired in parallel
The next step is to solder the wires and to protect them with shrink tube
Again a slot is required to route the wires
Finally, the wiring is secured with zipties
Next: painting the LED wires in black
Of course, this window rubber gasket also needs to be black
The entire rear wall can now be attached to the bed
A small hole is required to route the LED wires
The DIYGuy999 Junior is now finishing the body
Of course we also want working headlights!
So let's prepare a 5V distributor board
Fits nicely on existing mounting posts
The 5V supply wires are now attached
Nice working rooftop lights!
They are wired with a 100 Ohm series resistor
Next: soldering wires to the headlight LED and protect them with heatshrink
The LED are then secured with super glue
The wire ends are now stripped and soldered to the distributor board.
The series resistor value is 220 Ohms
Of course, the distributor board also needs to be waterproof
Here you can see the details of the 5V distributor board
The electronics are now finished and we are ready to mount the cover
The cover is secured with two screws
These headlights are really nice looking!
Time to mount the body!
It is attached with a total of 6 screws.
That's it.
Doesn't look bad at all!
I was not entirely happy with the steering.
So I decided to design and 3D print a new, shorter servo arm and a new, longer steering linkage
The new parts allow a symmetrical steering angle
Finally I glued the bevel gear shaft bushing
and shortened the rear prop shaft about 1mm
Now we are ready for the first real outdoor test drive!
Let's plug in the LiPo battery!
Will it explode?
Yes, it's a crawler, this is top speed!
So, it should have off road capabilities, right?
Thanks to the waterproofed electronics, water is no problem.
But will it like snow?
Wow, this is really respectable for a 1:16 scale!
I hope, this little tutorial was helpful for you
The K989 receiver seems to be the perfect choice and makes this build really easy!
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Bye!
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