Frequently Asked Questions about the Cesaroni 54mm 6-Grain Case
Q: Why don't you ship rocket motors to countries outside the USA?
A: There are too many shipping regulations. We're a small company, and we don't have the manpower to track the regulations for each country in the world. So to keep our prices as low as possible, we only ship to USA customers.
Q: Can you ship this item to me by this weekend?
A: All motors (including kits that contain rocket motors) must be shipped by surface transportation (truck). While we usually ship this item the same day the order comes in, you should plan extra time for the postal service to deliver them via third class mail (Parcel Select).
Q: How is maximum lift-off weight determined?
A: The maximum recommended lift-off weight for each delay depends on the size of the rocket, its drag coefficient, launch angle, and the wind conditions at launch. We recommend running a RockSim computer simulation for each rocket design and launch conditions to select the proper motor delay. For help selecting the correct delay time, see Apogee Technical Publication #28. For additional information on maximum lift-off weight, see our FREE newsletter article on this subject. Click here to download Issue #214.
Q: Can I reload a single-use motor with the reloadable propellant grains?
A: No. During the "burn," the inside of a single-use case is severely charred and eaten away. The nozzle also erodes and changes shape. Should you try to reload the case, it will burst open and could cause you harm. This is why the NAR safety code prohibits modelers from doing this dangerous activity.
Q: Can I make my own reload propellant (such as black-powder) and put it into the metal reload casing?
A: No. Black powder is classified as an explosive. The metal reload case is not designed to hold explosives like black powder. It will burst open in an uncontrolled manner. This is highly dangerous!
Q: Is the rocket fuel (propellant grains) interchangeable between motor casings?
A: No. Each type of propellant grain is made to be loaded in a specific metal case. The reason is that the grains are different geometries (some have holes, some have slots) and are different sizes. They each burn differently which affect how much thrust they create. Additionally, the grains must be matched to the correct rocket nozzle so they create the proper amount of pressure inside the metal case. Too much pressure and the case will burst the aft bulkhead. Too little pressure and the motor will not make enough thrust to lift the rocket safely into the air. In other words, there is no such thing as a "generic" reload case.
Q: My rocket has a motor mount tube and retainer to hold the motor in the rocket. Do I really need a casing and closures too?
A: Yes. The casing is what holds the propellant together in a proper manner, so that it will burn and eject correctly.
Q: Why are motors like the G339 and F120 called High Power?
A: High power motors are motors that are "H" or above, or have an average thrust over 80 N/s. If the number after the letter (ie. 339 or 120) is over 80, it is considered high-power.
Q: I had a motor CATO with my Cesaroni motor, and I would like to submit a warranty claim. What do I need to do?
A: Cesaroni needs the following information for all claims:
Q: Using spacers, what casings can I buy to get the largest number of motors for the fewest number of casings?
A: You are allowed to use up to 2 spacers in the casings. So the best option is to purchase the 6G and 3G cases, and use 2 spacers. That will give you the ability to fly 6, 5, 4, 3, 2, and 1 grain motors. The only case you will not have is the 6XL case.
Q: Why are certain motors marked 18+?
A: Any motor that has to be assembled or is considered High Power has to be purchased by an adult. This includes reload and loadable motors, which can go as low as "E" size.
Q: I need help selecting motors. What should I do? Can you teach me how to select them myself?
A: Watch this YouTube video - How to Select Model Rocket Engines
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