March 26, 2023
Description
Inspired by the original rear LED light bar bumper by theblackspyder, this is a new take on the design to make it closer to the original in appearance as well as internal fit to the bumper support for added strength. This should drastically increase the durability of the bumper in crashes as the internal bumper support braces against the frame of the bumper for torsional and shear stresses, rather than relying only on the screw mounts which can rip through the bumper's face.
Please let me know if you have any suggestions for improvements.
Printer:
Sidewinder X1
Rafts:
No
Supports:
Yes
Infill:
50%Filament: various PLA, PETG (recommended for durability), ABS black
Notes:
Recommended printing orientation is to lay it flat on the back side with the outer bumper face upwards. Due to the weight of the vehicle and torsion forces that occur in crashes and tumbles, there will be significant stress on the mounting points. The V2 model has been designed to increase the thickness around the mounting points where shearing has occurred the most often (outer mount holes) and to use the inner bumper mount edges to off-load stress forces from the screw mounts as much as possible. Improvements to the design will be made where possible should I continue to experience crash failures. My goal is to make this bumper as bulletproof as possible to reduce damage to the lightbar that can occur if it is ripped off in a crash, though obviously there will be limits.
If anyone cares to test other printing orientations and post their results, it'd be much appreciated.
License:
Creative Commons — Attribution
8
Aaron Kelley
