Here are a few pictures going up on a 54mm J500 Sugar Motor We will be adding more as we torcher this rocket in the near

After a good walk in the desert we find the Crayon laid out on a bush.  Sometimes it can be a little hard finding stuff in the desert, everything looks the same after a while.
     

Making of a Crayon
The crayon came from our "need" for a cheep 4" rocket to test our 54 mm motors, at $6 for the airframe and nose cone the cheep part is covered! It has proven to be very sturdy by landing several times with the laundry still safely tucked in the airframe! The drawback is due to the plastic tail cone, they are somewhat labor intensive to build. Only a couple of pictures were taken of the build, when we make an another one we will shoot more!

 

The fins are 1/4” 5 ply birch glassed with 4oz in our standard “high pressure” method. Then glassed to the motor mount along with the lower centering ring, which has 3 T-Nuts and a wood block to hold the lower rail button. The motor mount tube has the proven “glue the Kevlar on” recovery rigging. The fins were painted with Krylon that is a prefect match!

 
The black printing is not very durable, so before working with the tube shoot a couple of coats of clear paint. The tube was cut just above the third black ring for zipperless recovery. The core from a rope spool was the right size for the coupler, it was glued in just touching the tail cone. The cone was drilled for the motor mount and retention screws then the fin slots were cut. The tail cone was installed using greased screws, the airframe and coupler assembly slid on and aligned with the upper centering ring. A film of grease was applied to the fin root/body tube area to prevent the foam that will seep out from sticking. Carefully remove the upper centering and fill with two part foam, allow it to fully cure and trim the excess and glue in the upper centering ring.

 

The base ring for the nose cone is 1/2” ply cut to squeeze into the cone. Attach the recovery line to the nose weight. (I used hammers from an impact wrench, air tool repair is what I do for a living use what you have handy!) Put the weight in the nose, tape up the coin slot from the outside with electrical tape and fill about 3/4 of the way with two part foam. Install the base ring and fill the rest of the way.

 
The base ring in the nose cone lines up with the top black stripe, so a black screw holds the nose cone on. Just below it is a small vent hole to keep the reduced pressure at altitude from prematurely separating the airframe. Kids like this rocket because it looks like their bank at home, adults like it because it's always flown way overpowered!