Subreddits similar to r/SR71

91k subs

This community is for discussion among pilots, students, instructors and aviation professionals.
https://reddit.com/r/flying/

r/WarshipPorn

73k subs

We're dedicated to posting the ***highest quality*** & ***largest*** images of ships of war, from the lowliest gunboat to the most glorious battleships of yore, be they from antiquity, the Age of Sail, or the modern era. **Ship models, blueprints, and schematics are accepted as well!**
https://reddit.com/r/WarshipPorn/

r/aviation

422k subs

Anything related to aircraft, airplanes, aviation and flying. Helicopters & rotorcraft, airships, balloons, parachutes & skydiving, paragliders, winged suits and anything that sustains you in the air is acceptable to post here.
https://reddit.com/r/aviation/

r/WarplanePorn

28k subs

A subreddit for the appreciation of things that fly without registration.
https://reddit.com/r/WarplanePorn/

r/MachinePorn

495k subs

High quality images of machines and machinery.
https://reddit.com/r/MachinePorn/

r/MilitaryPorn

245k subs

High quality images of the military (from all countries).
https://reddit.com/r/MilitaryPorn/

r/TopGear

199k subs

The best subreddit... in the world
https://reddit.com/r/TopGear/

r/Helicopters

18k subs

Helicopters Subreddit
https://reddit.com/r/Helicopters/

r/KerbalSpaceProgram

545k subs

The Kerbal Space Program subreddit. For all your gaming related, space exploration needs. http://kerbalspaceprogram.com
https://reddit.com/r/KerbalSpaceProgram/

r/aviationpics

14k subs

https://reddit.com/r/aviationpics/

r/flightsim

57k subs

For all those who love to fly the virtual skies.
https://reddit.com/r/flightsim/

r/MilitaryGfys

121k subs

*MilitaryGfys* is a place for sharing military moments from around the world and throughout history in the small, easy to share html5/WebM video format, also known as Gfys!
https://reddit.com/r/MilitaryGfys/

r/WeirdWings

22k subs

A subreddit spawned from /r/weirdwheels with the same intent, only with planes! This sub is for documenting all those strange planes out there from prototype to production. All aircraft are allowed, including helicopters (despite the sub name).
https://reddit.com/r/WeirdWings/

r/engineering

232k subs

The hub for all content related to the engineering discipline.
https://reddit.com/r/engineering/

r/Military

185k subs

The largest military subreddit on reddit.
https://reddit.com/r/Military/

r/FighterJets

9k subs

Pics, Articles, Videos, Games, and more!
https://reddit.com/r/FighterJets/

r/ThingsCutInHalfPorn

318k subs

For your cut in half needs.
https://reddit.com/r/ThingsCutInHalfPorn/

r/hoggit

26k subs

Welcome to /r/hoggit, a noob-friendly community for fans of high-fidelity combat flight simulation. Discussion primarily focuses on DCS: World and BMS. This is not a full on reprimand-you-for-having-your-navigation-lights-on-when-you-shouldn't-have type outfit here. You'll find we foster a laid back atmosphere to learn how to work the various modules available in DCS.
https://reddit.com/r/hoggit/

r/spacex

355k subs

Welcome to r/SpaceX, the premier SpaceX discussion community and the largest fan-run board on the American aerospace company SpaceX. This board is not an official outlet for SpaceX information.
https://reddit.com/r/spacex/

r/EngineeringPorn

360k subs

https://reddit.com/r/EngineeringPorn/

r/MURICA

291k subs

A subreddit for FREEDOM! 'MURICA! FUCK YEAH!
https://reddit.com/r/MURICA/

r/WWIIplanes

17k subs

A place to share anything about anything flying in the last great war.
https://reddit.com/r/WWIIplanes/

r/Justrolledintotheshop

628k subs

For those absolutely stupid things that you see people bring, roll, or toss into your place of business and the people that bring them in.
https://reddit.com/r/Justrolledintotheshop/

r/Skookum

63k subs

Skookum is a Chinook word with many meanings. Strong. Best. Powerful. Brave. Tough. Hardworking. It was the northwest loggers who gave the name to Skookum products for their unfailing dependability and rugged strength.
https://reddit.com/r/Skookum/

r/wec

31k subs

The official subreddit for the FIA World Endurance Championship, and the ACO's 24 Hours of Le Mans.
https://reddit.com/r/wec/

r/Jeep

79k subs

All stuff Jeep related: tech articles, pics, advice
https://reddit.com/r/Jeep/

r/carporn

733k subs

High quality images of cars.
https://reddit.com/r/carporn/

r/blog

17m subs

https://reddit.com/r/blog/