Crossfire Arms

thingiverse

Here are the long overdue Crossfire and Crossfire 2 Arms and Accessories. All arms are compatible across both platforms, addressing most issues people faced in previous versions. Both original Crossfire and Crossfire 2 arms come with the latest 3.0 arms. The 3.0 arms are modular versions of the previous arm design. Using them without any legs is perfect for attaching Skids. Two areas to add different types of legs can be found under the motor mounting area and mid-arm, snugly press fit in. If one of these areas breaks, you only need to reprint that specific piece instead of the entire arm. Weight is a significant factor when it comes to flying devices. Many people asked me to beef up this area since it was the most prone to breaking after crashes or hard landings. Even strong parts can break due to crashes or hard landings, and printing these arms can take the longest out of any part. It's much more efficient to print a replacement leg in just 15 minutes than reprinting an entire arm. Additional improvements are on the way. Thank you for printing, flying, and most importantly, your feedback. Donate Update 7/26/15: I added the SketchUp files for the arms so that you can modify them as needed. New arms are coming soon! Update 2/27/15: The Arm 2.0 Tall/Short and Arm 3.0 files have been updated to accept 25x25mm bolt patterns like the AX-4008Q-620KV motor. Instructions Print at a 25-100% infill with 2-3 shells. I print my arms and legs at 50% infill using ABS but others have also achieved success with PLA despite it being more brittle than ABS. Only the Standard Leg needs to be printed with support. Press-fit it into the arm. You can also add a few drops of glue between the Standard Leg and the arm for extra resilience in hard landings, but it's designed to pop off instead of break during impacts.