Board Thread:General Nerf discussion/@comment-33092097-20190212224415/@comment-27306930-20190214031844

I ordered this Afterburner with a 43mm crush and outfitted it with a pair of Artifact M4U motors, some basic Worker slanted flywheels, and a Turnigy 5000mAh 2S LiPo. According to Artifact, M4Us run at 54,000 RPMs at 2S voltages.

Believe it or not, it's really hard to find reliable data on the RPMs of stock Nerf motors. But our friends at Pololu tell me it's around 17,000 RPMs. So the resultant FPS with M4Us would be the stock FPS times π. Hah, just kidding, it's 3.17 times stock FPS, which would translate to roughly 200 FPS, accounting for the coefficient of friction with standard Elite darts.

For safety reasons, Hasbro wouldn't make anything like this. They have pretty narrow performance specs: 60-70 FPS for darts, 90-100 FPS for RIVAL rounds, and about 80 FPS for missiles with a stock HAMP. Some dude at Reddit claims his unnamed stock missle launcher gets "350 fps with a stout pull". Yeah, sure, if you're Arnold Schwarzenegger maybe.

I hate to use the word never, but I'm pretty sure Hasbro isn't ever going to sell anything that would accelerate darts/rounds/missiles beyond these velocities. And I'm sure there's a room full of lawyers counselling them not to.