The 75mm motors are big - 3 inches in diameter, and are intended for big honking rockets. They start in the Level 2 category of high power motors (K-size), and you can graduate all the way up to a Level 3 "M" motor.
All the 75mm motors are plugged. That means there is no built-in or optional motor ejection charge. You will need to provide electronics to control the ejection of the parachute out of the rocket. You can use something as simple as a timer, but most will use altimeter deployment.
At this time, we do not sell 75mm reload propellant kits. We apologize for this inconvenience, but you may contact your local rocketry club for more information on how to obtain these motors.
|More Information About Rouse-Tech Reloadable Motor Casings|
|The aircraft-grade aluminum reload hardware consists of three parts: the case, the forward closure and the aft closure. Here is what each is used for:
The case holds the propellant inside. It is anodized yellow to make it easy to find if it ever should fall to the ground
The forward closure screws onto the front end of the case. It serves multiple purposes. First, it holds the hot gases of the burning propellant and keeps them from shooting forward into the body of the model rocket. It also holds the special slug of propellant called the "delay grain." Finally, it has a small receptacle at the tip to hold the black-powder ejection charge.
The aft closure screws onto the base of the aluminum case. Like the forward closure, it is a bulkhead that holds the hot gases inside the case so the motor can produce thrust. In the middle of the part there is a big hole, which allows the nozzle to protrude out the back end of the assembly.
Their is another feature of the aft closure that makes it convenient for use in most rockets. The diameter is bigger than the case. When you push the motor into the engine tube of the rocket kit, it stops when it butts up against the aft closure. In effect, it acts as the engine block. This way you can leave the engine block out of the kit if you want to use it with different length reload motors
|The longest case (RMS-75/7680) also comes with a forward seal disk. This disk is inserted into the front end of the propellant liner and prevents the forward end of the case from discoloring and blistering from the intense heat of the bigger motors.|
|Made in the USA by Rouse-Tech, these are precision engineered cases that are designed to be used with the Aerotech propellant kits.|
|In fact, theses cases have the exact same specs as the one from Aerotech, because Aerotech licensed Rouse-Tech to make them for consumers. The only difference is the anodized color on the outside of the motor.|
|Do You Need A Different Diameter Rouse-Tech Reloadable Motor Casing?|
Step 1: Pick the diameter of the engine. Clicking on the diameter will take you to more information about each diameter motor so you can select the correct casing.
Step 2: Pick the Aerotech Propellant kit that you want to fly in your rocket. To be honest, this is the most time-consuming step. Contact us if you need help. We'll direct you to the RockSim software that we use to help pick the right rocket engines for your vehicle. Technical Publication #28 gives you a step-by-step procedure for picking the motors that might work in your rocket.
Step 3: Match the propellant kit that you just selected in step 2 to the appropriate Rouse-Tech Monster Motor Case.
The aluminum reloadable casing is also called the "reload hardware." Why not let Apogee Components be your hardware store?
|Frequently Asked Questions:|
Q. Where do I buy the propellant kits that go into the high power motor cases?
Q. Are there any special tools that are needed to assemble these motors?
Q. Don't I need to be high-power certified to buy these motors?
Q. Where do I go to get High Power Certified so I can buy the propellant kits?
Q. Why isn't there a "one-size-fits" all reloadable-case?
Q. Why would Aerotech license Rouse-Tech to make these motors?
Q. If I leave the engine block and hook off the rocket, what keeps the rocket from sliding into the rocket?
Q. How easy is it to assemble a reloadable rocket motor?
|Cesaroni Reloadable Rocket Motors
Cesaroni (also known as CTI) is a manufacture of reloadable rocket motors. These motors are made in the standard diameters, so they will fit into your current fleet of rockets without having to do any further modifications. Note: the cases are not compatible with Aerotech Reload Propellant.
How to use the Sortable Table Below:
Click the "Select Comparison Columns" button to hide or show information. Click the headers to sort up or down. Click the subheader to filter the table to include just the information you want.
|Motor||P/N||Manuf & Type/ Casing||Delay
|Color||Burn Time||Tot. Imp.
|Sorry... We do NOT ship rocket engines outside the USA. |
Please be aware that typical shipping transit times for motors are 1-2 weeks.
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Never had any problem with orders from apogee. Great service friendly. staff. Keep up the good work. Thanks Jeff.
Fast delivery , only 2 weeks for the italy , well packed and complet how i ask . Congratulations , Apogee have all my respect !
My orders arrived on time and in good condition. I am grateful for the materials you make available to educators. You have done a terrific job...