Replacing faulty component in RC car

Hi group,

Just to share, this was a good afternoon, applying reverse engineering and modeling to change a broken swing arm from my boys toys

Printed in Form 3, Durable resin with adaptive layer, in two different orientations



Useing Tough 1500 for small parts.
Not happy with the surface.
Maybe i need to try this resin instead.

Given your application your part will experience many more tension/compression cycles.

Wonder how that will fatigue your part.

Well done!! I’ve done exactly the same procedure with an RC car!
TIP: print the parts vertically to their pressure forces.

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Great work! I always love to see projects like this.

Nice job.

Just curious as to your reverse engineering process. I bought an Einstar scanner recently to design parts to mate perfectly to my Jeep. I have had success getting the scan geometry to a usable point that I can design around. I feel like there might be a better way without having to buy Design X.

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It depends on the geometry. For simple things it’s faster to design from scratch and make adjustments as you do test prints. For larger things it may be better to scan it first and then draw around it.


Agree! geometry plays a lot and for this parts was easier and faster to take measures, and a good chance to spend the afternoon with my sons :slightly_smiling_face:

(toy) Drill chuck