Saturday, March 18, 2017

Estes Nike Smoke #7247 Build, Part 2, The Enerjet Smoking Nose Cone

The original Enerjet Nike Smoke had a smoking nose cone. To see how it was done - CLICK HERE

The tip of the nose cone was cut off and a BT-5 was slipped in acting as a ram-jet. During boost, the forced air pushed talcum powder out of a vent at the base of the nose cone.

At this point I don't know if a B6 or C6 engine would get the model to the velocity speed needed to make the nose cone work properly.
I'm building two rockets, one will be a normal 18mm model, the other will be for 24mm engines with the ramjet nose cone.

All that is needed to make a smoking nose cone is the hollow blow molded nose cone, a length of BT-5 and a 5 sized plastic nose cone.

The tip of the nose cone is cut off.
Slide the BT-5 over the tip and mark around the tube base with a pencil.

The BT-5 on the right inset picture shows more tube than needed. I cut it larger than probably needed and will cut it to size after sizing.

Near the base of the inside tube are two slots, 1/8" wide by 1" long. The slots are marked and cut 1" up from the bottom of the tube.

NOTE: The new Estes Nike Smoke nose cone has a longer shoulder than the old Centuri nose cone. I wanted the rectangular vents directly opposite the open hatch on the nose cone. I had to re-cut a new tube with the slot bottom 1 7/8" up from the bottom of the BT-5 tube.

The picture shows the slots (at the earlier 1" mark) on the BT-5 ready for cutting. Draw the slots 1 7/8" up from the bottom of the tube edge.

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