Descon 7-Up

Scratch - 7-Up {Scratch}

Contributed by Daniel Kirk

Manufacturer: Scratch
7-Up
(Contributed - by Daniel Kirk)
7 upSpot
Rocket Pic
7 up
A Fourteen Liter Bottle Rocket

After seein' several small rockets fly out o' sight, matey, I wanted a rocket that would spend more time where I could see it. Avast! I wanted somethin' large, so it would be highly visible, but with low enough power for a slow, majestic lift-off. Body tubes and nose cones get expensive rather smartly when you go beyond a BT-80, me hearties, so I looked for a cheaper alternative. Well, blow me down! I thought o' usin' a 2- liter pop bottle for a body tube, arrr, arrr, and realized it would also make a neat boat-tail. Avast! I was lucky enough t' have a friend who found an old 2- liter in his basement with a rounded bottom-- t' kind that sat in a plastic cup for stability. This allowed me t' give me rocket a rounded, torpedo-like nose.

T' newer style bottles with 5-lobed bottoms will work, too, me hearties, you'll just have an alien-lookin' 5-lobed nose cone. Begad! Well, blow me down!

Parts and Materials

2- liter Bottles (7)
24 mm Engine Mount (BT-50)
24 mm Engine Block (if you can't find one, cut one
from an expended engine casin' with a hacksaw)
24" - 36" Parachute
3/16 x 6 x 36" Balsa Plank for fins
12-15 feet o' 70# test Keelhaul®©™® for shock cord
1/4" x 2 yd. Avast! Flat Elastic for bungee
Clay nose weight
Corrugated Cardboard for centerin' ring
Drinkin' straw for launch lug
Paint
Epoxy

Recommended Engines:
Aerotech E 18-7W RMS

Rocket Pic

comment Post a Comment