|Then mark one end at 1/4"
and carefully make a small slot
for end of motor hook...
|...And glue the engine blocks
on that end. Don't block the
|Thread ends thru holes, tie a
knot on each and secure with
5min epoxy. Pull thru MMT...
|...and drill two small holes in
top centering ring, then take a
length of Kevlar cord,
|Hack a piece off caulk gun
tubes for nice laser cannons.
|...and three piece wings...
Epoxy on the brass lugs.
|Its a pain in the neck, but
makes Viper look sweet...
|Btw - here's a pic of all the
furniture cut from 1/8" bass-
wood stock with razor saw.
BSG Viper project pg.2
|Next lets build the motor
mount tubes. First mark both
ends at 1/2"...
|Install the motor hooks in the
slots, line them up and wrap
twice with masking tape.
|Line up the centering rings
even and level with 1/2" marks
on both ends...
|And glue them on. I use
Titebond II, it holds F39T
reloads. Take 24mm MMT...
|...so the cord's not getting
messed up while you install
MMT even with the body tube.
|Then install the 18mm motor
|...or why not three for a Super
Duper Hyper Viper...
|Time to cut the launch lugs off
5/16" brass. I like brass, it's old
school like balsa nose cones...
|Mount the Lasers with 5min
epoxy one at a time and hold
them in place until epoxy gels.
|Well, gotta 'fess up and tell you that actually
I build 4 Vipers with 4 different motor
configurations. Front view, all Vipers still in
white Krylon base coat...
|Viper 1 is a 24mm single, 2 is a 24/18mm
over/under cluster, 3 is 18/24/18mm inline triple
and 4 is the HyperViper with one 24mm and
|Besides its light weight of 8oz, Viper 1 was
very underpowered on a D12, cork screwing up
just like the Estes original. #2 flew better on a
D12-C6 combo, but still needed more oomph to
straighten out. Viper #3 flew beautifully on
C6-D12-C6, straight and true, and actually
glided very nicely upright after the boost...
|Viper #4 (top left) took off in a hurry on one
D12 and three C6's, flew very nicely gliding
like #3, thou quite a bit higher... #4 has
enough built-in stability margin to fly
chad-staged as well (top right) on D12-0 to
D12-5. Was this perhaps the first ever
documented Viper chad flight outside of
Quad on left, Chad