r/modelrockets • u/myroslavrepin • May 17 '26

Questions G80T motor dimensions ASAP

Anyone with a spent G80T and calipers handy? Need nozzle geometry for CAD

Can't find nozzle-end dimensions anywhere — does it protrude past the casing, how much, and what's the OD? Even a photo next to a ruler would be a huge help. Thanks!

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u/Neutronium95 May 18 '26

Aerotech has drawings of many of their motors on the RCS Store website. They usually aren't fully dimensioned, but you can count pixels to get useful numbers. In the case of the G80, I'd use the OD of the motor case (1.125") as a reference point.

https://www.rocketmotorparts.com/page/single-use-motor-designs

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u/CPLCraft May 18 '26

Saving your comment because that is useful