For those of you wondering about the strength of a PVC engine casing, [Richard] does say making larger rocket engines out of 2 or 3-inch PVC may not make much sense due to the increased chamber ...

All those 60s, 70s, 80s and 90s kids out there may remember the classes of model rocket engines – generally A, B, C, and D sized engines used to push your cardboard tube with balsa fins skyward.

One just launched the world’s biggest rocket, with mixed success. The other makes small model rockets for hobbyists, and it's stockpiling supplies ahead of Trump's tariffs.

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Two engines ... made its own V8 until the mid-to-late '70s when an automotive scandal revealed the automaker was swapping engines. Many '70s owners of The Oldsmobile Delta 88 discovered their ...