Monster Motor FAQ
Are there technical drawings available showing dimensions and weights that I can use to assist me in building rockets?
YES- The Rouse-Tech website has that posted under “technical information” for you to download.

Is the Rouse-Tech “Monster Motor” hardware compatible with other hardware?
YES. Our hardware is machined in the same facility as other approved Aerotech RMS hardware and is cross compatible. The only difference is the color of the anodizing.

What are the colors of Monster Motor hardware?
The 18mm, 24mm and 29/40/120 hardware features a gold case, gold forward closure and black aft closure.
All 29mm, 38mm and 54mm products feature gold cases and hard anodized forward and aft closures. Forward seal disks are not anodized at this time.
The 75mm and 98mm hardware uses blue anodizing on the cases and forward closures and a hard anodized rear closure with double the anodizing thickness as the smaller motors for that added protection.

Is there a warranty?
Yes. The hardware is warranted against motor failures caused by manufacturing defects for one year. The proper procedure to follow in the case of a motor failure is to send the hardware to Aerotech for inspection. After review, either Aerotech or Rouse-Tech will warranty the replacement hardware based upon the cause. Every failure should be presented to the motor vendor at the launch for a preliminary review.

Where can Monster Motor products be purchased?
We have an extensive dealer network established that will support you and your activities. Most have product in stock. Please visit our dealer page on the website to find a dealer that suits your needs. Some people like to purchase from dealers that attend and support their launches, while others like the ability to buy online.

Can I use an open closure instead of a plugged closure in a flight that uses electronics?
Certainly. Care must be taken in reading the propellant re-load instructions so no in flight problems arise. I have seen failures due to gasses escaping through the forward closure and igniting the ejection charge or gasses entering the compartment above the motor, causing harm. If the o-rings are not installed properly in the delay compartment, gasses can escape past the delay grain. As a safety precaution, I recommend using a plugged closure whenever you are using electronics.

How tight should the closures be, and should they thread all the way into the case?
The design of the RMS hardware, their threaded closures and casings is intended to satisfy a key engineering need. Motors are able to be threaded to compress the o-rings to a proper amount, each time a motor is used, regardless of the manufacturing tolerances of the liners, grains and parts. It is normal for the closures to tighten up prior to them threading all the way into the case. There should be a slight gap. If you tighten up both closures and they seat all the way into the case without a snug o-ring fit, no not fly it. That means that the liner is too short and the o-rings have not seated properly. Contact your dealer and obtain another liner that is longer.