HPI Wheely King Servo Saver A392 (from set 85260) by alga42 3d model
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HPI Wheely King Servo Saver A392 (from set 85260) by alga42

HPI Wheely King Servo Saver A392 (from set 85260) by alga42

by Thingiverse
Last crawled date: 3 years, 1 month ago
HPI Wheely King is an entry level 1:12 scale RC monster truck. Its steering servo mechanism contains a sacrificial split ring coupling called a "servo saver". When you hit a tree with your front wheel the coupling breaks and you get to buy a $11 set of parts (85260) to replace just that one small plastic piece.
After going through 2 of those, I measured and printed the next one. Then a couple more. A coupler out of PLA seems to work fine. It holds up during normal use and breaks on impact, just like the original part.

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