Lunsford JRx-2 Swing arm conversion parts

thingiverse

This is a recreation of highly sought after Lunsford b-200 trailing arms for Vintage Team losi JRX-2 1/10 scale buggy. Two versions of both swing arms and bulkheads are available. One has cutouts on both sides of the part, same as original molded units, while the other is flat on the back side to make it easier to print and hopefully stronger. The original Lunsford kit used 5-32 threaded studs to attach ball joints to front of swing arms, leaving very little material at top of arm which was a failure point. I designed these to use 4-40 stud for more material on upper side of mounting point. I used #44 drill bit to clean out shock mount holes for smooth operation and a 4-40 tap and drill pair to start the stud for ball joint mount. A 4-40 Dubro rod end (part numbers 899, 900, 2262, or 2263) is used along with Vintage Rocket city #87 links which look the same as Dubro units.