YK41012/Absima CR4.4eco updates

• This is an own-created collection of updates for a YK41012 crawler (brushless version)
• At least some parts should be compatible with similar models from Yikong. Absima calls a similar model CR4.4eco or CR3.4eco

How I Designed This

YK41012_FrontGrill

Aim:

• Provide a more authentic Ford Bronco look and to provide lights

Required parts:

• The big round lights are from Injora (INJORA 1W/3W Highlight LED Lights with Controller Board for 1/10 RC Car) https://www.injora.com/products/1w-3w-highlight-led-lights-with-controller-board-for-1-10-rc-car?variant=39449058934832
• The small yellow turn signal lights are from AliExpress (1 Pair Turn Signal 1/10 1/8 Rc Crawler Car For Traxxas Trx4 D90 D110 Rc4wd Scx10 90046 Rr10 90053 Yikong Rgt Axial Width Lamp) https://www.aliexpress.us/item/3256805394798553.html

How to:

1. Organize the lights from INJORA/AliExpress
2. Print the grill and use it to mark the body light holes to cut out
3. Drill the small holes for the M2 screws
4. Do cabling from inside body before mounting the grill to body
5. Use M2 screw and locknut (nylon nut) to fix the grill to body
6. (Optional part) For cabling, connect the front and backlights to one double connector (INJORA LED Light Control Lamp Panel for 1/10 1/8 RC Car) switchable via channel 4 or similar
7. (Optional part) For connection from body to ESC use AXSPEED Universal Magnetic Snap-on JR/ZH1.5 Extension Cable for RC Model Car (https://www.aliexpress.us/item/3256808898499470.html)

FrontGrill1

FrontGrill2

FrontGrill_attachment_step4

FrontGrill_Light_Details_step4

Magnetic_Connector_step7

Lights_Cabling_step6_step7

Magnetic_Connector_step7_connected

YK41012_FrontBumper

Aim:

• Getting rid of the ugly and NOT matching bumper and create something more authentic
• Closing the gap between body and bumper
• Improve obstacle approaching angle due to short angled bumper

Required parts:

• Stock bumper screws

YK41012_RearGrill_Ford-Body

Aim:

• Providing red backlights (My apologies for NOT finding proper matching rectangle lights)

Required parts:

• From AliExpress 10mm red lights "RC LED Light Kit Headlamps for 1/10 1/8 1/12 RC Car Truck Crawler Drift Car Headlight Taillight TRAXXAS HSP HPI MN99 MN90 Wltoys"

Information:

• The logo is just an example, while the one provided shows "Ford Bronco" in original Ford TTL font

YK41012_RearGrill_Ford

Rear_Back_Lights

YK41012_RockSlider

Aim:

• Getting rid of the simple and NOT matching bumper and create something more authentic
• Provide a minimal body protection from side impact
• Provide a side approaching angle

Required parts:

• Stock screw and stock mounting hole plates

YK41012_Batterymount_Front

Aim:

• Provide a second battery mount to front to improve weight distribution
• Extend battery capacity using a parallel adapter and 2 batteries

Required parts:

• M2 or M2.5 countersunk screw to mount battery mount to chassis holes with corresponding locknuts
• Velcro stripe to fix the battery
• (Optional) YK41012_Batterymount_Distance to avoid battery moving

How to:

• Use hand countersink for the holes on the 3D print
• Make sure the screws are NOT too long blocking any steering servo action

YK41012_Batterymount_Front

YK41012_Batterymount_Distance

Aim:

• Avoid battery from moving around (depending on your battery, this can be achieved by putting anything in between)

Further optional updates

• Removed window stickers and cleared windows using TAMIYA paint remover (not as easy as expected, but it works while it takes time)
• Exchanged wheels and tires (brass in the front/aluminum rear)
• Exchanged stock transmitter and receiver using cheap FlySky G7P and FS-R4P 4 channel receiver
• Exchanged 25KG steering servo with cheap INJORA INJS035 35KG servo
• Repositioned start button, reachable via pinky finger between chassis and body

Category: 3D Printing