|
Contributed by Larry Zeilmann 
(Contributed - by Larry S. Zeilmann)  Brief:
This is a skill level 1 rocket with simple construction that makes great stable
flights.
Construction:
Kit includes:
- 3 12" BT60 body tubes
- 3 balsa die cut fins from 3/32 balsa
- 2 BT60 tube couplers
- 1 PNC60NA Nose Cone
- 36" of 1/4 elastic shock cord
- 6" of white BT20 motor tube
- 1 Engine hook
- 2 1" long 1/8 launch lugs
- 2 CR6020 centering rings
- 1 black motor hook retainer ring
- 1 24" plastic parachute
Construction is well illustrated and fairly easy to perform. The fins are
mounted through the tube utilizing manufactured pre-cut slots. Additional
sanding is required on the fin tabs to get a good snug fit. Care must also be
taken to insure proper alignment when the three tubes are joined together. The
instructions give a good hint here on rolling the tubes on a table while the
glue is still workable. I would avoid using CA type glue to join the tubes
because its instant setting time would prevent you from getting a good
alignment on all three body tubes. I was also concerned about no method being
offered to prevent the chute from falling down the full 36" length of the
body tube. To prevent this I installed a additional tube coupler approximately
8" from the nose cone end. Then I built a floating piston so that I could
launch without wadding. Other builders might wish to construct a ventilated
parachute shelf or baffle system. I also chose to install a 24mm motor mount
and fly on the D12-5.
Finishing:
Rocket can be painted in any color or design, I chose to paint mine in royal
blue. The kit comes with glow in the dark adhesive decals. They must be cut out
and care is required when laying them down. A trick in installing the larger
decals is start from the center and roll outward, pressing out the air bubbles
as you go. Looks great when finished and glows nicely in the dark. Manufacturer
warns against night launches.
Construction Rating:
4
out of 5
Flight:
Manufacturer recommends that the Prowler be flown on B4-2, B6-2 (first flight),
C5-3, C6-3. I chose to build mine for a 24mm motor and flew it on a D12-5. I
have seen the Prowler fly to a low altitude on a C6-3. I would guess flight
would be on marginal power on either a B4-2 or B6-2. RockSim 5.0 estimated my
D12-5 flight to obtain an altitude of 620 feet, I estimated that to be within a
50 foot accuracy.
Motor retention was the typical Estes Motor hook.
I flew the Prowler in light winds and flight was straight and true. Even
when it took a slight gust off the rod, it gave a little wiggle and then
settled into a straight and true flight. I think this can be attributed to the
higher rod end speed on the D12-5. RockSim 5.0 estimated rod end departure
velocity at 42 ft/second on the D12-5. Caution should be considered if flying
in stronger winds on a 18mm motor.
Recovery:
The kit comes with a 24" plastic chute. Shock cord is still the poor Estes
elastic type with installation being the typical Estes paper triangle glued to
the interior body tube wall. Watch this shock cord closely if you choose to
expose it to ejection charge heat. Bank on it becoming brittle and breaking
after a few flights. This chute size works great with the 18mm motors, due to
the low launch height. But with the D12-5 it can be a big floater on a 24"
chute. I used an 18" chute and recovery was perfect with no damage. With
my floating piston modification I was able to prep quickly with no wadding and
retrieved a pristine chute every time. The stock construction requires wadding
and lots of it.
Flight Rating:
4
out of 5
Summary:
I really like this rocket. A great performer and with a few changes it can be
an even better performer. A great buy ranging from $10- $18 dollars. Excellent
bang for the buck.
Overall Rating:
4
out of 5 - Post a Comment -
What You Can Do
- Link to this Page -
You can link to this page using the following HTML or BB Code.
Text Link in HTML (for web sites)
<a href="http://www.rocketreviews.com/estes-prowler3-larry-zeilmann.html">Estes - Prowler(3) - Review by Larry Zeilmann</a>
Text Link in BB Code (for forum posts)
[url=http://www.rocketreviews.com/estes-prowler3-larry-zeilmann.html]Estes - Prowler(3) - Review by Larry Zeilmann[/url]
Select the appropriate above text with your mouse then "right-click" and select "Copy." Then, paste the text into your web site's code or a discussion forum post.
|
