24 MAY/JUNE 2022 SPORT ROCKETRY
www.siriusrocketry.com
motors - chutes - tools -
adhesives - parts -
great kits from the
finest manufacturers -
and so much more in
our secure online store!
It's now time to have
some serious fun with
rocketry, visit us today!
The Sirius Rocketry
Eradicator is the
newest kit in our
Transition Series of
kits, rockets that fly
comfortably on F
& G motors and
are built to fly on an
H when you're ready
for your level one!
From model to High
Power, we're serious
about rocketry!
Transition
into
fun!
To make centering ring templates, you
can visit our friends at PayloadBay.com
and use their centering ring tool. e rings
for these baffles are made from 1/8" Lite
Ply. e dimensions required for the rings
are shown below, and the resulting tem-
plates are shown in Figures 8a-8c.
BT-55/18mm
Q = 1.2830
I = 0.7360
T = 1.279527
U = 0.3438
A = 8
BT-60/18mm
Q = 1.5950
I = 0.7360
T = 1.594488
U = 0.3438
A = 8
BT-60/24mm
Q = 1.5950
I = 0.9760
T = 1.594488
U = 0.3438
A = 9
Figure 6. Holes are punched in
the flute tube with a standard
paper punch.
Figure 9. Cutting the semicircles
of the sprocket ring.
