Pasco Scientific ME-6830 Instruction Manual

Contents

Pasco Scientific ME-6830 Instruction Manual Manual pdf 7 page image

012-05375B Ballistic Pendulum/Projectile Launcher3®General Operation of the Projectile Launcher➀➀➀➀➀ Ready- Always wear safety goggles when you are in a roomwhere the Projectile Launcher is being used.- For Projectile Launcher experiments, the base of theBallistic Pendulum/Projectile Launcher must beclamped to a sturdy table using the clamp of yourchoice. When clamping to the table, it is often de-sirable to have the label side of the Launcher evenwith one edge of the table so a plumb bob can beused to locate the position of the muzzle with re-spect to the floor.- The Projectile Launcher can be mounted to thebracket using the curved slot when it is desired tochange the launch angle. It can also be mounted tothe center two slots in the base if you are only goingto launch horizontally, such as into a DynamicsCart.➁➁➁➁➁ Aim- The angle of inclination above the horizontal is ad-justed by loosening both thumb screws and rotatingthe Launcher to the desired angle as indicated by theplumb bob and protractor on the side of theLauncher. When the angle has been selected, boththumb screws are tightened.- You can bore-sight at a target (such as in the Mon-key-Hunter demonstration) by looking through theLauncher from the back end when the Launcher isnot loaded. There are two sights inside the barrel.Align the centers of both sights with the target byadjusting the angle and position of the Launcher.➂➂➂➂➂ Load- Always cock the piston with the ball in the piston.Damage to the piston may occur if the ramrod isused without the ball.- Place the ball in the piston. Remove the ramrodfrom its Velcro® storage place on the base. Whileviewing the range-setting slots in the side of thelauncher, push the ball down the barrel with theramrod until the trigger catches the piston at the de-sired range setting.- Remove the ramrod and place it back in its storageplace on the base.- When the Projectile Launcher is loaded, the yellowindicator is visible in one of the range slots in theside of the barrel and the ball is visible in anotherone of the slots in the side of the barrel. To check tosee if the Launcher is loaded, always check the sideof the barrel. Never look down the barrel!➃➃➃➃➃ Shoot- Before launching the ball, make certain that no per-son is in the way.- To shoot the ball, pull straight up on the lanyard(string) that is attached to the trigger. It is only nec-essary to pull it about a centimeter.- The spring on the trigger will automatically returnthe trigger to its initial position when you release it.➄➄➄➄➄ Maintenance and Storage- No special maintenance of the Projectile Launcher isrequired.- Do not oil the launcher!!- To store the launcher in the least amount of space,adjust its angle to 90 degrees. If the PhotogateMounting Bracket and Photogates are attached tothe launcher, the bracket can be slid back along thebarrel with the photogates still attached.