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Storm the Castle

Division: B – Middle School

NC Essential Standards Alignment:

Event Rules: See National Rules

Event Score Sheet: 2023 Storm the Castle Scoresheet

National Event Page: Here


12/21/22: The device will be measured in the “launch mode” or the “Ready to Fire” position.


Prior to the competition, teams will design, construct, and calibrate a single device capable of launching projectiles onto a target and collect data regarding device parameters and performance.


High score wins. Final Score = Best Light LS + Best Heavy LS + CS.


Can students change out their slings between the light and heavy weights?

As long as the second sling (and any additional) are impounded and the device still fits within the 100x100x70 cm max dimensions with the changed sling.


We will be modeling our counterweights after these directions. We have found the end caps at Lowe’s are flatter than the ones at Home Depot, which help with the size.

The counterweights for Storm the Castle will have an eye (explicitly per Rule 6.d) and devices must accommodate that.

Floor protection is mandatory for all devices.

Event Resources:

Here is a basic Youtube Video describing how you can build a catapult from PVC.