Quick Answer
Your Domino Catapult likely misses because of inconsistent release angle, loose parts, or using dominoes that are too heavy. Check the launch angle and tension first, then move to the release mechanism.
Why Trajectory Problems Happen
A catapult's accuracy depends on a few variables: the angle of the arm at release, the tension in the elastic band, and the weight of the projectile. If any of these change between shots, your dominoes will land in different places.
The CrunchLabs Domino Catapult is designed to teach projectile motion, but it's also a build that can shift during play. Loose screws, a bent arm, or a worn rubber band can all change the trajectory without you noticing.
The Trade-Off Between Power and Accuracy
You might be tempted to pull the catapult arm back further to get more distance, but that often makes the release less consistent. A longer pull can cause the arm to wobble or release early, sending the domino off to the side.
Finding a sweet spot where the catapult is both powerful and accurate takes a few test shots. Start with a medium pull and adjust in small increments.
Diagnosis and Fixes for a Miss-Firing Catapult
- Symptom: Dominoes land short: Check the tension of the elastic band. If it's loose, tighten it or replace it. Also, make sure the arm isn't hitting an obstacle that stops it early. If the band is stretched out or frayed, stop and replace it before further testing.
- Symptom: Dominoes veer left or right: Inspect the arm for sideways play. Tighten any loose screws and ensure the base is level. If the arm is bent, carefully straighten it or consider a replacement part. If the arm is cracked, stop and get a replacement; don't try to glue it.
- Symptom: Dominoes fly too high or too low: Adjust the release angle. If the arm releases too early, the angle is too high. If it releases too late, the angle is too low. Experiment with the stopper position to change the release point. If adjusting the stopper doesn't help, the projectile weight might be wrong—try lighter dominoes.
About the Domino Catapult
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Domino Catapult - Projectile Motion: The Domino Catapult is a CrunchLabs build from the box series that explores projectile motion through hands-on assembly and play. Because it's a build-it-yourself project, small assembly variations can affect performance, so checking your construction is the first step in fixing accuracy issues.
Domino Catapult - Projectile Motion