I previously printed an Enerjet 1340 fin can in red graciously created by Jack Hydrazine. I decided what to do with it, clone a Centur Argus. But I still needed the plastic reducers if I didn’t want to use balsa. Last night I created 3D models for the plastic reducers PSR-78 and PSR-813. I have a few of the original PNC-70 plastic nose cones for the Ogive type option in the instructions, so I decided to use one of them on this project to pay homage to Centuri, although it appears both types are available on Thingiverse by dholvrsn for 3D printing.
Here are the Thingiverse links to all the parts:
Fin Can: https://www.thingiverse.com/thing:3641770
PSR-78: https://www.thingiverse.com/thing:3912950
PSR-813: https://www.thingiverse.com/thing:3913869
ST-7 Cones: https://www.thingiverse.com/thing:560706
Tube Lengths:
ST-13: 12 Inches
ST-8: 5.5 Inches
ST-7: 7 Inches
Plans: http://www.spacemodeling.org/jimz/cen5309.htm
Decided to give myself the option of a 24mm D for the engine mount, figuring I can always adapt down.
