Apollo Saturn Marquardt R-4D RCS Rocket Engine : 1/1 scale 3D Printed Model

Description

Developed for the Apollo program, the R-4D is a small hypergolic rocket engine (two component fuel/oxidizer that ignite on contact). It was Corporation for use as a reaction control thruster. These tiny engines produce about 100 pounds of thrust each. Arranged in multiple cluster Command Service Module (CSM) and The Lunar Excursion Module (LEM) in route to the moon and back.  It's reliability and simplicity are second to none and it's found in different forms on many spacecraft. Aerojet Rocketdyne still manufactures the R-4D today.
This PLA Plastic Model was developed using actual hardware on loan from a collector, Marquardt documentation, and video interview with the reference.
This was originally purchased from e-bay seller (who no longer offers this item):
https://www.ebay.com/usr/kaijusears
I have owned it for a while and enjoyed displaying it, now it time to pass it on to someone else to enjoy.
FREE Shipping and insurance to the lower 48 states, additional charge to Alaska or Hawaii
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All sales final and “as is”.          Item will be shipped USPS Priority Mail or UPS Ground dependent on availability.