Arrma 4x4 Driveshaft & Steering Crank Cover Set by suchtragedy

Last crawled date: 3 years, 3 months ago

Description
This cover set is designed to keep larger rocks/debris that fall in from the top and get caught in the center driveshaft or steering crank for Arrma 4x4 vehicles (Mega/3s/4s) with two options to pick from to accommodate both the short wheel base (SWB) and long wheel base (LWB) chassis. See below for further description for each component's fitment/install descriptions which will vary depending on your specific application.
Steering Crank Cover
The steering crank cover is universal fit for all Arrma 4x4 based vehicles. To install simply fit it in between the steering servo and front side guards and it will naturally fall into place. To secure it remove the (2) servo mounting screws that face the front of the vehicle and line up the cover's mounting holes on top of the servo mounting holes. Next, run the screws back through the holes to sandwich the cover between the screws and the top of the servo mounting tabs. If necessary use longer M3 screws to accommodate the extra thickness of the mounting plate tabs.
Backside Plates
These plates should be installed first before the driveline and center shaft cover. The plates will close up the exposed backside (ESC/motor side) of the center driveline that remains after the main center driveline cover is installed.
There are 3 different plate options that can be used in combination with each other since the exposed area will vary depending on your motor/heatsink/esc install setup. The large plate (58mm) has 2 mounting points (1 on each end), the small plate (40mm) has 1 center mounting point, and the small plate w/offset (40mm) has it's mounting point located at one end. The small plate w/offset is intended to close any gaps that can't fully be covered with the normal small and large plates due to lack of mounting holes remaining or obstruction from the center driveline bearing retainer. If you need to use the small plate w/ offset but the mounting point is on the wrong side just mirror it in your slicer to move it to the other side. Worst case scenario any of these plates can be trimmed after printing to best suit your needs.
To install line up the cover(s) you choose with the hex(es) in the center spine then secure them with M3x8 flat head screws (don't use longer screws than this otherwise you will potentially screw through the bottom of the chassis. The M3 screw is designed to expand the hex to hold the plates in with friction.)
Note: I recommend printing the covers with the mounting hex notches facing the bed and using supports. This method ensures best hex dimension accuracy, plus the surface imperfection from the supports won't be seen since it faces the chassis once installed.
Center Driveline Cover
The center driveline cover is a 1 piece construction and designed to replace your center spine block. To install simply remove your center spine block then slide the center shaft cover into place while the center shaft is installed. To secure it re-use the stock M4 screw removed from the stock center block through the bottom of the chassis.
Important Notes:-The center block portion of the cover is built with tight tolerances and is intended to be as close in dimensions to the stock center block as much as possible. Be sure your chassis is very clean with no dirt/sand/debris around the rear block area in order for the block to not get stuck during install/removal. If necessary use a hobby knife to trim any parts of the center block if fitment is too tight.
-Be sure to install the rear battery strap through the cover's strap hole before sliding into place so you can easily remove the cover later by using the battery strap as leverage to pull it out. If you forget to do this first then install of the strap may be difficult and removal of the cover may be an issue due to the lack leverage and poor access to pry it out with a screwdriver.
-The LWB center drive cover has a notch cut out to allow clearance for the center drive shaft bearing retainer. Be sure to install the bearing retainer in 3rd spine hole from the rear of the vehicle so it will line up properly with the cut out.
-For best print detail print the the center driveline covers in vertical orientation w/ supports/brim.