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REV 2.4 - Sun Aug 29 00:04:14 2010

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Thrustline Aerospace
F-19 Night Fighter
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SPECS: 24" x 12.5" - 3.25 oz
ROCKSIM FILE: Right Click to Download
SpaceCAD FILE: MISSING - please submit here
REC'D MOTORS: C11-5, D12-5

Rating
(Contributed - by John McClure - 06/01/04) Thrustline F-19 Fighter

Brief:
Single stage futuristic, jet fighter styled model rocket.

Construction:
Single glassine wrapped paper body tube, balsa nose cone, two main "wing" fins, two "vertical stab" fins, two canard fins, and two rear sub fins. Carved balsa canopy. Standard modroc motor mount with 2 laser cut black fiber board centering rings and 24mm paper tube w/ engine clip to fit standard 2.75" long "D" motors. 18" Mylar parachute. Kevlar thread and 1/4" wide elastic shock cord attached to MMT.

The instructions were very complete and easy to follow. Numerous pictures to explain the important steps. The fin templates are printed on heavier card stock and a tube marking wrap was included.

It was a challenging build due to the number and size of the fins/wings. You must pay careful attention to alignment when gluing on the various fins/wings. The parts included are of high quality.

The only "gotcha" would be the canopy. Three pieces of balsa sheet are glued together to make a block. A template is included to so you can mark the canopy's basic profile. It is a bit of work to shape the canopy, but if you take your time and follow the tips given in the instructions, you will be rewarded with a fine looking piece of hand shaped balsa. This is definitely a "builder's" kit.

Thrustline F-19 FighterThrustline F-19 Fighter

Finishing:
No special techniques required for finishing. Pick you favorite. I filled the wood and tube spirals with Elmer's Fill 'n' Finish. A couple of coats of Rustoleum gray primer, sanding in between coats. Final finish is two coats of Krylon gloss black, leaving stripes of the flat primer, accented with yellow stripes on the gray borders. The finished product is sort of an "X-Plane" theme.

About the only thing missing would be nice set of decals. A pre-formed canopy would make the build go faster.

Construction Rating: 4 ½ out of 5

Thrustline F-19 Fighter

Flight:
Flight prep is standard stuff. A motor clip retains the motor. A handful of "dog barf" wadding, fold the chute, and pack it in. Launch lugs are 1/8" diameter.

The first flight was on an Estes C11-5. It left the pad with authority on the C11. There was a slight 5mph breeze that day. At approximately 300 feet it started to weather vane into the wind at about a 45 deg angle. The delay was a bit long and made for an exciting dive before the chute opened. Definitely a rocket for calm days.

The second flight was on a D12-5. Much better flight. Not as much weathercocking.

Recovery:
The shock cord is the popular Kevlar thread attached to the MMT, extending out past the end of the body tube where it is attached to an elastic shock cord to the nose cone. The mylar chute is attached to the nose cone eyelet with a snap clip swivel.

Thrustline F-19 Fighter Recovery went well. It comes down slow but all the fin surface does make for a lot of drift. Even with a late ejection on the C11-5, the rocket suffered no damage during the recovery.

Flight Rating: 5 out of 5

Summary:
The main thing with this rocket is the look. It has the "cool" factor in abundance.

No real cons. The complex fin alignment and canopy carving makes this a builder's kit. Not for the inexperienced.

Overall Rating: 4 ½ out of 5


Rating
(by Todd Mullin [Who's Who Page] - 02/24/07) Thrustline F-19

Brief:
In the early days of rocketry if you wanted a rocket that looked like a jet, it was a Centuri kit for you. Thrustline's F-19 Night Fighter is a futuristic fighter aircraft styled rocket that once again delivers the kind of feel that could be found with these kits. The F-19 boosts on a single 24mm motor and recovers by parachute.

Construction:
All of the component of the kit were well packaged in a poly bag when I received my F-19 kit. The kit was well packaged with several others in a sturdy mailing carton and arrived without damage despite the best efforts of the post office to inflict it.

Included in the kit are:

  • 1 BT-55 Body tube
  • 1 Kevlar and elastic shock cord kit
  • 1 18" Mylar parachute
  • 1 Steel screw eye
  • 1 1/8" Launch lug
  • 1 1/4" BT-50 Thrust ring
  • 2 Black fiberboard centering rings
  • 1 BT-50 Engine tube
  • 1 24mm Engine hook
  • 1 1/8" Wooden dowel stock
  • 1 Balsa nose cone
  • 3 3/16" Balsa sheets (for canopy)
  • 2 1/8" x 16" Balsa sheets
  • 1 Instructions and fin templates
Thrustline F-19

The instructions for Thrustline's kits are great. The order of assembly is well thought out and logical. The F-19 set is no exception. The eight pages of instructions with photos to illustrate the steps are easy to follow. There are several pages of fin templates printed on light cardstock.

This kit is definitely not for the inexperienced builder. There are several things that would have been considered "normal" in the early days of rocketry that put this kit into the classification of a "builder's kit" today. If you are looking for a kit that will let you slap its laser-cut fins on and launch it the same day, this is not it.

The builder first assembles and installs the motor mount and Kevlar recovery harness. The main body tube gets marked with the included body wrap. Next comes the first challenge. The fins are marked by the builder onto the sheets of balsa and cut by hand. The builder must be conscious of the direction of the grain. The suggested direction is marked on the templates. Some of the fins are fairly small for the thickness of the sheets and can be challenging to cut cleanly. If the builder doesn't follow the suggested cutting pattern they could be left short if fin stock. Several of the small pieces are joined together to for the wings and tail of the model. It is done this way to allow the grain to be aligned as to give maximum strength to the finished part. After the wing and tail assemblies are completed and sanded, they are attached to the airframe.

It was at this point I got an idea about how I'd like to make the F-19 more to my tastes. In the stock kit, the pilot's canopy is attached to the main airframe but this looks weird to me. After a couple of quick emails to Thrustline to confirm that it wasn't a terrible idea, I decided to attach the canopy to the nose. The kit comes with 3 sheets of balsa to be laminated together and carved by hand to form the canopy. I suspected (and later it proved to be correct) that by mounting the canopy on the nose cone I would need additional layers because of mounting to the pointed cone instead of to the straight tube. I cut the canopy pattern out as close to the edge of the supplied balsa as possible to save the excess for extra layers. I laminated the extras on top of the canopy after I had it cut. Lots of carving and sanding ensued, including on the bottom of the canopy to match the curve of the cone. I reversed the teardrop shape so that the pointy end was in the front instead of the back to match the taper of the cone. The finished canopy mated up to the cone nicely but had required a thickness equal to about five sheets instead of just three.

I hit one "gotcha" with this kit, which came up with the wing assembly. The supplied 1/8" dowel that is used to reinforce the wing tips and add projections to the ends of the tail fins was too short. I was holding a running email dialog with John from Thrustline at the time. I'm sure I could have asked him for a replacement piece of dowel, but I had enough in my parts bin to keep on building without the delay of having a small piece of dowel sent cross country. Thrustline's customer service is great, so I'm sure it wouldn't have been a problem if I had need to have it sent though.

Finishing:
There is a lot of sanding and filling required for all the balsa in this kit. The balsa for the kit is top notch (firm and tightly grained), but there is lots of it!

I used my standard procedure for finishing. One light coat of Elmer's Fill 'n' Finish on the balsa and the tube spirals. The tubes barely had any spirals, so they were a breeze to finish. After sanding, the whole kit got a good heavy coat of Kilz primer and got another round of sanding to get it ready for paint.

This kit reminds me of the US Navy's F-18 Hornet so I set about looking for an interesting paint scheme on one. It seems the Hornet only comes in two paint schemes: Blue Angels and blah grey. After a bit of searching, I decided upon a camouflage scheme similar to the one used on the Russian SU-34/35. I started with an undercoat of white and freehanded the colors to the top of the aircraft afterwards. Lastly, the canopy was carefully masked and painted.

There are no decals for this kit. It might have been nice to have some but with my paint scheme, they would be a bit superfluous.

Construction Rating: 4 out of 5

Thrustline F-19

Flight:
I decided to go with the larger of the two recommended motors, a D12-5. The weather was nice and calm--perfect flying conditions! The motor clicked in solidly with the stock engine hook. A quick handful of "dog barf" wadding and a fold of the chute finished the prep of the model for flight. The model leaped off the pad and boosted perfectly straight, rolling slowly on the way up. The ejection went off perfectly at apogee and the rocket landed quite close to the pad. The slight breeze pulled the chute of the F-19 and it fell onto its top on landing. The top of one of the vertical stabilizers broke off cleanly.

After a touch of super glue, the Nightfighter was ready to fly again. The prep was just as simple for the second flight. This time, the model weathercocked slightly, rolling again on boost. The wind had come up a bit since the first flight, causing it to drift a bit on the semi-large chute. It landed just outside the border of the flying field, right at the edge of the water. This time it landed right side up without damage.

Recovery:
The shock cord on this kit is Kevlar and elastic that is attached to the motor mount. The parachute kit came with a snap swivel. I was a little leery of the elastic cord as it was somewhat thinner than I am used to using, but it seems to be durable enough for the model.

The chute may be a little large for the model on a small field, but it does come down nice and gently, which is good with the large wings. After two flights the recovery system is showing only normal, expected wear and tear. After reading reviews of previous Thrustline kits, I added a couple of wraps of masking tape to the Kevlar even with the end of the body tube to prevent zippering. This is the simplest answer that I have heard of with this style of recovery harness, and it seems to work well.

Flight Rating: 4 out of 5

Summary:
This was a somewhat challenging kit to build, but the end result is very rewarding. The kit requires craftsmanship that reminds me of how kits used to be 30 years ago. It was nice to take a trip back to the days before the "major manufacturers" dumbed down the rocketry experience to the lowest common denominator. I enjoyed the conversation that I had with John from Thrustline and the encouragement that he gave me to customize the kit to my tastes. Great customer service in a day and age where one gets used to receiving very little help from an outsourced, overseas customer help line.

Overall Rating: 4 ½ out of 5

[Submit your Opinion]

GUEST's OPINION:
03/07 - "I love the choice of the blue-gray camo for this rocket. F-18s were painted up to look like Sukhois for use as "Aggressor" aircraft in Air Combat Maneuvers (ACM) training, so you can claim either a Sukhoi or Hornet as the mood strikes!" (K.G.)

[Enter Rocket Specific Tip]

SPECIFIC ROCKET TIP:
"" (x.x.)

[Enter Flight Log]
Date Name Motor Ejection/
Altitude
Wind Notes
08-03-2007 Ray King Est SU D12-3 Just Before 5-10 mph winds Event: NARAM-49
- This was an excellent flight - straight off the launcher and very high for its size. Parachute only partially opened which was a blessing. It landed on the edge of the field.
08-25-2007 Ray King Est SU D12-3 Didn't See Calm - Nice straight launch - chute did not deploy completely, but due to its large wing area slowly floated down with no damage.
04-05-2008 Ray King Est SU D12-3 Apogee - Perfect 10+ mph winds - I love this rocket - great height and very fast - parachute partially opened, but due to the wing size came down very slow - no damage. Ready to fly it again.
04-05-2008 Ray King Est SU D12-3 Apogee - Perfect 10+ mph winds - Another great flight - looking forward to the next flight.
05-31-2008 Ray King Est SU D12-3 Just Before Calm - Another Great Flight - Very fast off the launch rod and good recovery.
02-24-2007 Todd Mullin Est SU D12-5 Apogee - Perfect 0-5 mph winds Event: Fiesta Island
-
02-24-2007 Todd Mullin Est SU D12-5 Apogee - Perfect 0-5 mph winds Event: Fiesta Island
-
03-24-2007 Todd Mullin Est SU D12-5 Just Before 0-5 mph winds Event: Fiesta Island
- Perfectly straight boost. Looked like it got much more speed and altitude than the first two flights. Might need a D12-7 in flights with no wind.
05-26-2007 Todd Mullin Est SU C11-3 Apogee - Perfect 0-5 mph winds Event: Fiesta Island
-
05-24-2008 Todd Mullin Est SU D12-5 Very Early 10+ mph winds Event: Fiesta Island
-
08-28-2010 Todd Mullin Est SU D12-3 None - CATO 0-5 mph winds RIPEvent: Fiesta Island, San Diego, CA
- Status: CATO'd
   

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