29mm to 38mm Clamshell Rocket Motor Adapters

thingiverse

Two motor adapters to adapt 29mm motors to 38mm motor mounts. One is DMS/SingleUse/Hobbyline to 38mm RMS size (the DMS File); the other is 29mm high power to 38mm RMS style. These are clamshell, similar in design and function to the nice little Estes plastic adapters. Should work fine with existing 38mm motor retention on the rocket as this surrounds the rear thrust rings on the 29mm motors. I'm probably not done tinkering with these; there are opportunities to cut weight. There will be stringing due to the overhangs by the cutouts inside. Easy cleanup with a hobby knife. I will probably change the design, when I get a chance, to prevent that. May be able to print with supports.