1/10 Scale Rc Topsy
its cool so why not. this is not for the faint of heart if you have issues feel free to reach out on discord , whatever 3d printing site you downloaded the model from or via email to Muddyfarmer314@gmail.com (it may take longer here i suck at remembering to check this email)
Supplies
As always, these are affiliate links. I earn a small commission if you purchase through them, at no additional cost to you.
Suspension & Steering
- Tires – 10 needed
- Amazon link
- Shocks – 6 needed
- Amazon link
- 80mm is best, but I have a part available for 90mm shocks as well.
- Steering Servo – 1 needed
- Amazon link
- Only one is needed for the truck.
- Ball Joints
- Amazon link
- Front Tire Inserts – 2 needed
- Stiff inserts for the front tires.
Drivetrain
- Drive Motor
- Amazon link
- Transmission
- Amazon link
- Differentials – 3 needed
- Amazon link
- Front Axle Shafts
- Amazon link
- Rear Axle Shafts – 2 needed
- Amazon link
- 15T M1 Gears – 2 needed
- Amazon link
- Battery
- This is the battery I use:
- Amazon link
Wheels & Hubs
- Wheel Hex Hubs – 6 needed
- Amazon link
- Wheel Hexes – 6 needed
- Amazon link
Bearings
- 8×16×5mm Bearings – 2 needed
- Amazon link
- 5×11×4mm Bearings – 24 needed
- Amazon link
- 7×14×3.5mm Bearings – 6 needed
- Amazon link
Frame & Body
- Frame Rails – 2 needed
- Amazon link
- These are 1000mm rails. I also use these for trailer frames.
- Windows
- Amazon link
Hardware & Miscellaneous
- M3 and M4 Hardware
- A good assortment of both, with a small amount of M2 hardware.
- M4 T-Slot Nuts – Tons needed
- Amazon link
- The truck uses a little over 50, but these are also used for the trailers, so it's worth having extras.
- 2mm Rod – 300mm
- Amazon link
- Any material will work. I use stainless steel.
- 5mm Rod – 300mm
- Amazon link
- Needs to be something you can drill. I use brass. This gets cut down to under 100mm, so these will work a single longer piece will also work 300mm or so
Rear Axles
16: m3x12
8: m3x20
6: 5x11x4 bearings
2: rear axle shafts scx10
2: 7x14x3.5 bearings
1: ar44 diff
4: m3 lock nuts
grease
these axles are placed in the truck in 2 orientations so on one the nuts go on the pinion side the other they are opposite
Shocks
2 t-slot nuts
2 m4x10?
m3x20
m3x16
2 m3x12
you can have a different shock its the same hardware just print the correct mount for the length
Axle on Suspension
4 m3x30-35 not picky at all
wheel hexs and hardware
one of these should have the pinion coming out the top the other is the bottom
Rear Tires
18:m3x16
if you have ever assembled rc tires thats all you are doing 2 tires per hex adapter 4 sets in total the black parts can be gray as well they arent really seen
Transfer Case/splitter
4 m3x12
4 m4x10?
4 t-slot nuts
2 15tM1 gears
4 5x11x4 bearings
2 brass shafts
grease
Transmission
4 m3 bolts of whatever lengths appropriate for your transmission
mount the motor too
4 m4x10?
4 tslot nuts
Mount the Drivetrain
front to rear for whole step instructoins
front axle
front 145-225
to splitter 95-130
left in image 135-205
right in image to center axle 145-225
rear 155-240
aliexpress.com/item/3256805605578991.html?spm=a2g0o.order_list.order_list_main.86.21ef1802v240hI
the center axle has the pinion leave through the bottom the front and rear its on top
the main frame rails are 2x 1000mm long 2020 extruded aluminum
Mount Side Details and Bumper
each part takes 2 m4 bolts and t slot nuts
the bumper also needs the grill guard attached with some m3 screws and the flaps m3 as well
Cab Pre Assembly
doors take 2mm stainless rod as hinges
m2 for the air brake handles and inner door panels
m3 for the seat and steering column
5mm stainless for the wheel
trim the acrylic to match the window frames and glue it all in dont forget the back wall of the cab https://youtu.be/zPPHn8kpXwA?si=8zqDxr3M5d8c_qEr&t=28
the 25 minute mark shows how i install the door hinges as well
horn https://youtu.be/uCz3nRtT-H8?si=qeGMnnDt42-vgJjL&t=1791
the visor on the roof is m2
leave the roof and back wall off for now it makes installing the cab much easier but when the time comes they take m3x12
Hood
it takes some glue and 6x2 magnets but pretty straight forward 2mm rod for the hinge again the front m4 hole doesn't line up with stuff underneath so just leave it empty
Hood Install
pull off the bumper it make it easier to slide the hood in then reinstall bumper push the hood up againstthe bumper and tighten the 3 m4 bolts down
now take 2 m3x30 bolts and run them into the bottom of the bumper this helps hold everything in place
Cab Install
cab goes against the back of the hood m4 bolts are on the floorboards then add the roof and back wall
Headache Rack and Wiring
wire it up based on your receiver if you are using the same motor as me you will need an extension lead to connect to the battery tray under the hood and i ended up needing a servo wire extension. the headache rack need the lights glued in and bolts m4 with t slot nuts to mount it and m3x12 for the back cover (i forgot to get a picture of that.)
5th Wheel Plate
extra thanks to black crow for allowing the use of this