HG P407 shock and servo mod

thingiverse

This is for P407 RC Truck or Tamiya Bruiser shock modification. ------------------------------------------------------- The original shock is quite bad(I think) so I want to replace some common after market shocks. Use 100mm hole to hole shocks X 4. However it's not easy because the space between wheel and chassis is narrow, some modification must be made. Front Shock: use file Top Mount Front two parts and bottom mount, it has enough space for shock to install between outside of chassis and front wheel, however the original super long steering servo rod has to be removed. therefore, it's necessary to change the steering servo to front mount, the front mount servo idea is originally from https://www.thingiverse.com/thing:3471382 , thanks to him , it's very good idea. and I designed my own front servo mount part, so I can make necessary modification. Rear Shock: not enough space for common shocks installed in between wheels and chassis, so we have to install shocks inside the chassis, it's necessary to make two holes in the electronic box to let shock go through it, then it works very well. Optional: since we moved the steering servo to the front then the original servo room has only one gear switching servo, it's possible to move it to side so to make a bigger room so we can if needed, put esc or receiver in the servo room. we can use the file gear_switch_servo_mount.stl to change the gear speed servo mount position. ============================================= File List ------------------------------------------------------- rear_shock_mount_passenger_side.stl rear_shock_mount_drv_side.stl ------------------------------------------------------- To slice and print: the largest face should facing down on bed. for rear shock mount , left and right , install on chassis, outside. using 4X M3 screws (8mm long) and 2X M3 nuts. the other 2 screws and screw into the metal holes. shock_bottom_mount.stl ------------------------------------------------------- for front and rear shock bottom mount, to replace the original white plastic part. To slice and print: nut face facing down, on bed For rear shock installation: make sure it's facing the correct side, nut face toward outside of the chassis. Suggest install the shock on it first so we have easier access to the screws, then put it on the chassis later. It's a little longer than the original one, so our new shocks don't touch the chassis. top_mount_front_driver_side.stl top_mount_front_passenger_side.stl ------------------------------------------------------- front shock mount left and right To slice and print: the largest face should facing down on bed. Install inside of chassis, 4 self-tapping screw should work. car_body_mount_front.stl ------------------------------------------------------- install it between two front shock mount, to reinforce the front mount, and put the car/truck body holder on it. need to remove the screws and nuts from the original body mount metal piece and install them here. Use 2X M3 self tapping screw to connect it with two shock mounts. shock_insert.stl ------------------------------------------------------- insert shock upper hole if necessary. can also use the original insert servo_mount_vertical.stl ------------------------------------------------------- use it to mount the servo on the truck front. idea is from this design https://www.thingiverse.com/thing:3471382 Can use the original short servo rod to connect the wheel and servo, no need to buy an extra servo rod. gear_switch_servo_mount.stl ------------------------------------------------------- optional use it change the gear switch servo mount position if necessary. Print using PETG 50% or more infill