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REV 2.4 - Tue Aug 17 04:01:29 2010

P.O. Box 470396
Broadview Heights OH 44147
(330) 745-9755
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SPECS: 52.8" x 7.67" - 104 oz
ROCKSIM FILE: Right Click to Download
SpaceCAD FILE: MISSING - please submit here
REC'D MOTORS: 29mm: H128, H180, H220, H238; 38mm: H123, I211, I357, I284

(Contributed - by Nathaniel Gilbert - 02/16/07) LOC/Precision Warlock

A short fat rocket capable of flying on H through J engines.

All components were standard LOC components.

  • 1 Huge plastic nose cone
  • 1 7.67 inch. diameter paper bodytube
  • 1 38mm paper motor mount tube
  • 2 7.5-1.5 inch plywood centering rings
  • 4 1/4 inch Plywood fins
  • 1 54 inch nylon parachute
  • 1 Eyebolt assembly
  • 1 1/4 inch paper launch lug
  • 1 9/16 tubular nylon shock cord w/pre-sewn loops

I purchased this rocket from Commonwealth Displays for use as my L1 certification rocket. I built it stock but added a 38mm Aero Pack motor retainer, a Nomex heat shield, and a forged eyebolt.

After reading the minimalist instructions and inspecting the parts, I began construction by drilling a hole in the forward centering ring and installing the forged eye bolt which I had purchased separately. (The kit came with a cheap, inadequate eyebolt which was not strong enough for a rocket of this size.) I then glued the two centering rings in place using West Systems epoxy. The aft centering was installed slightly further forward than the instructions recommended so that the Aero Pack retainer would fit. While the epoxy dried, I decided to slot the tubes. After marking out the slots with a pencil, I used a sharp X-Acto knife and a metal ruler to carefully cut the slots. While time consuming, this step is not particularly difficult as long as you take your time and do not attempt to cut through the tube on your first pass. It took me about a 1/2 hour to cut the slots. After the epoxy on the motor mount had hardened, I flipped it over and applied more epoxy to the other side of the centering rings. I also locked the eyebolt in place with a drop of epoxy. The next day, I installed the motor mount into the tube and epoxied the aft centering ring in place. After the epoxy had cured, I flipped the rocket over and epoxied the forward centering ring. While the assembly had dried, I airfoiled the fins using a belt sander. Unfortunately, the fins do not reach the motor mount. (Current kits now use LOC's Loc-N-Fin technology which rectifies this problem.) After tacking the fins in place with a few drops of CA, I used a little epoxy to permanently attach the fins. The method I use for fin filleting is simple and effective but takes 4 days to do on a 4 fin rocket. Basically, I lie the rocket on the ground so that two fins are facing upwards and then use a West Systems Syringe to squirt West Systems epoxy in a line where the fin meets the tube. (Do not try this with the cheap epoxy you can buy at the hardware store.) The epoxy naturally flows to form a perfect fillet. I then check on the rocket every ten minutes for an hour and wipe the epoxy that has dripped off of the forward and aft parts of the fin with a paper towel. The next day I rotate the rocket to the next set of fins and repeat. While it has to be done over a period of several days, the actual amount of time and effort this takes is minimal and the results are consistently perfect. To attach to shock cord to the nose cone, I deviated from the instructions and drilled two 1/2 inch holes in the nose cone. I waited to actually install the recovery system and Aero Pack until after I had finished painting the rocket.

LOC/Precision Warlock After finishing the rocket, I removed the masking tape that I had wrapped around the end of the motor mount and attached the Aero Pack with JB Weld. I then hooked up the recovery system. First I threaded the shock cord through the 2 holes I had drilled in the nose cone and pull one end of the shock cord through the loop on the other end. I then slid the shock cord through the hole in the Nomex heatshield and used the included quicklink to attach the shock cord to the eyebolt installed in the forward centering ring. I then used the standard attachment method on the parachute (around the shock cord and through itself) to attach the parachute, finishing the rocket.


  • Simple but effective construction
  • Wood components (fins & centering rings) were high quality
  • A very nice shock cord


  • Minimal instructions
  • No motor retention included
  • Eyebolt inadequate for high power flights
  • No precut fin slots
  • Fins do not reach motor mount (since I built this kit, it has been redesigned with Loc-N-Fin Technology)

I decided to go all out on the paint job for this rocket, so I spent about three weeks finishing it.

I started by filling in the tube spirals with watered down Elmer's Wood Filler. After sanding off the excess wood filler with 100 grit sandpaper, I primed the rocket with gray Krylon Primer. I then sanded this down with 220 grit sandpaper and applied another layer of primer. After repeating this several times (during later coats I wet sanded), I finally had a near perfect finish. I then painted the body of the rocket with yellow Krylon and the nose cone with red Krylon paint. I applied several coats, wetsanding between coats with 400 grit sandpaper. After finishing painting the body of the rocket yellow, I masked off the top and bottom of the rocket with 40mm Tamiya masking tape (this is the extremely high grade kind) and covered the rest of the rocket by taping garbage bags on with cheap masking tape. I then painted the top and bottom of the rocket red. After I had applied several coats of red and it had dried, I carefully removed the masking tape. I then masked off the ends of the rocket again and painted it with Krylon black. After removing the masking tape and garbage bags, I painted the entire rocket with Krylon clear coat.

Construction Rating: 4 out of 5

LOC/Precision Warlock

I first flew this rocket at NOVAAR for my L1 certification flight. After packing the recovery system, loading the Aerotech I211 motor, and passing the RSO's safety check, I loaded the rocket onto the pad. The flight was absolutely beautiful until the motor suffered a premature ejection almost immediately after burn out. Despite the early ejection, I still thought that I had successfully certified until I reached the rocket, which landed within 50ft of the pad, where I discovered that the shock cord had torn an enormous 24 inch zipper in the body tube.

Fortunately I was able to certify at the same launch with a stock LOC Lil' Nuke which I happened to have with me and an H128. (Note: I don't recommend this as the rocket barely survived the flight.)

I was able to repair the rocket using part of a LOC coupler and some fiberglass. The rocket isn't perfectly round anymore, but it still flies perfectly and you can't tell from more than 10ft away.

Since the mishap, I have flown the rocket once more at a METRA launch on another I211. The flight was beautiful and the parachute ejected at the correct time.

LOC/Precision Warlock

As long as the motor retention and parachute protection are added, this rocket has perfect flights. Because of it's shape and size, it's a good low flying rocket for smaller club fields.

Flight Rating: 4 ½ out of 5

This is a great looking rocket. It could be improved (motor retention, precut fin slots, parachute protection, better instructions, etc.) but can by upgraded by any flyer with a lot of mid or high power experience into a fantastic rocket. I would definitely recommend this kit.

Overall Rating: 4 out of 5

(Contributed - by Joe Cacciatore [Who's Who Page] - 07/15/04) LOC/Precision Warlok

Single 38 mm engine rocket almost 8" in diameter and 4.4' high with chute, plywood fins, cardboard tube and plastic nosecone.

High quality cardboard tube, engine mount tube, 3 plywood fins, 2 plywood centering rings, eyebolt, quick link, 60" ripstop nylon chute, and 22' x 1/2" shock cord. It comes with no previsions for motor retention.

I have built 2 other LOC kits and this was a little bit better than the others. This kit came with instructions and fin guide pattern. The rocket is easy to build for anyone who has already built high power rockets before. The instructions have only one illustration. They tell you everything you need to know including where to mount the cardboard launch lug.

The hardest part was cutting the 7.5" long slots in the body tube to mount the fins. Unfortunately the fins do not have tabs that mount to the engine tube. They only stick inside the body tube a very small distance, maybe 1/8". I worried about this during the construction and for good reason. The first time I flew it, I had a broken fin at the tube.

The parts went together just fine with very little sanding. Because the root edges and center rings are large, it took a lot of epoxy to put this rocket together.

There are no provisions for motor retention so I used my standard method, using T-nuts mounted in the centering ring with a sink clamp. (See my website for more information.)

LOC/Precision Warlok

This rocket comes with no decals or other enhancements so I added my own gold band and gold fin reflectors to make it look better. The nosecone on this rocket is huge and it takes a lot of paint. I went through 3 cans of Krylon Plastic spray paint on the whole rocket. The paint suppose to bond to plastic but even before I got to the first launch the paint had already chipped off a few places from the nosecone where it rubbed against something during transportation.

Construction Rating: 4 out of 5

There are three recommended motors: H260-5, I357-6 and I284-8. Of course you can fly it on others, anything that can lift about 7 pounds.

I bought a Nomex pad to protect the chute and I also used wadding in the engine tube as suggested by LOC. Even though the rocket is short and the shock cord/chute are real close to the engine tube, these precautions worked and the chute was not damaged.

I flew it on an I284-S. I have a video of it on my web site. My rocket weighed in at 6.5 pounds unloaded and RockSim suggested an 8 second delay so I used an I284 short delay.

The first time I flew it one fin almost got broken off at the root edge. Looking at the video of the flight not sure if the fin broke during separation (looks like maybe the nosecone hit it) or it occurred when it landed. It was windy that day.

Flight Rating: 3 out of 5

PROs: Large diameter, short rocket with good flights on "I" engines. Materials are high quality and sufficient instructions

CONs: Cardboard launch lug, weak fin attachment method, no decals, and no motor retention

Overall Rating: 3 out of 5

[NAR][Sport Rocketry]

The following excerpt is from "Sport Rocketry". The intention is to allow guests to get a basic feeling about a kit. We strongly suggest that you get a copy of the referenced Sport Rocketry and read the entire article. Inside you will find many helpful hints in construction as well as other useful information. For more information, use the two links above.

{short description of image}(Sport Rocketry - Nov/Dec 2003 - by Joe Alain)

"...exciting H powered flights can be made for small flying areas."
"The materials were all in order and were typical LOC/Precision quality components."
"There were not that many parts to this kit and the construction was straightforward."
"The fins were of excellent quality..."
"The through-the-wall fin attachment is not all the way to hte motor mount..."
"The modeler has to cut the fin slots..."
"The kit comes with 5/16 elastic shock cord..."
"Aside from the instruction to sand the rocket prior to painting, there are no suggestions as to how to finish your rocket and no decals are included."
"I would give this kit a 'very good' rating."
" a modest seven (7) don't need a J to get it off the ground."
"At ignition...the I211 immediately roaring to life."
"...I am guesstimating over 1,000 feet."
"The Warlock is a fun kit to build and even more exciting to fly."

Overall, the article suggests that the Warlock is a nice large diameter rocket that won't break your pocket book.

{short description of image} {short description of image}

[Submit your Opinion]

08/06 - "Kit has been updated: *body tube is slotted for fin placement. *fins use LOC "finlock" concept to secure fins to body tube. *upper bulkhead/centering ring predrilled for recovery eyebolt.(eyebolt and hardware encluded). *9/16 25 foot nylon recovery harness + 880 lbs D-ring *rated for "J" motors downside, fins don't go to motor mount" (J.J.K.)

[Enter Rocket Specific Tip]

"" (x.x.)

[Enter Flight Log]
Date Name Motor Ejection/
Wind Notes
03-19-2005 Joe Alain AT RMS I211-S Apogee - Perfect Calm Event: High Cotton Winnsboro, LA
- Impressive and dramatic flight! Shock cord fouled but came down with no problems.
11-14-2009 Joe Alain AT RMS I211-M Apogee - Perfect 5-10 mph winds Event: High Cotton Winnsboro, LA
- Great flight! I was concerned that the delay may be too long. However, the medium delay was perfect. I plan on using this rocket for my Level 2 attempt this year on a J350.
04-10-2010 Joe Alain AT RMS J350-M Apogee - NC Up 5-10 mph winds Event: High Cotton Winnsboro, Louisiana
- A picture-perfect successful level 2 flight! Boosted quickly off the pad and deployed just a fraction of a second past apogee. Drifted about a half mile down range. A great flight and day! Cert Flight: L2
07-01-2004 Joe Cacciatore AT RMS I284-S Apogee - NC Down 5-10 mph winds - Leaves pad and weather cocked a little, at seperation or landing one fin is broken loose. Lands a long way from the pad.
07-17-2004 Joe Cacciatore AT RMS I284-S Apogee - Perfect 0-5 mph winds - Second flight on an I284-S produces no fin damage this time.
08-07-2004 Joe Cacciatore AT RMS I211-M Apogee - Perfect 5-10 mph winds - Beautiful chute ejection right at apogee, lands very far away.
06-18-2005 Joe Cacciatore AT RMS I284-M Apogee - Perfect 0-5 mph winds Event: NERF
- Nice boost with I284, chute gets tangled up with nomex pad and rocket lands a little fast but thank God lands in dirt and no broken fins! This rocket is shown on the VooDoo LDRS23 DVDs.
11-26-2005 Brian Carpenter AT RMS I211-M Apogee - Perfect 0-5 mph winds - My first time flying this rocket. This is the biggest motor I've used so far. Very loud and quick at off the launch pad. It landed far from launch pad.
04-22-2008 Michael Emerick AT RMS J350-M Apogee - Perfect 5-10 mph winds Event: VOA
- Certification Flight! What a sight! All went well and we are going to do it again! Cert Flight: L2
08-02-2009 Michael Emerick AT RMS J350-M Apogee - Perfect 5-10 mph winds -
05-06-2005 Nathaniel Gilbert AT RMS I211-10 Very Early Calm RIP - Premature ejection created 24 inch zipper. Certification not successful, major repairs required. Otherwise it was a great flight. Cert Flight: L1 Status: Zippered
02-19-2010 Malcolm Smith Ces RLD J400-7 Apogee - NC Up 5-10 mph winds - Perfect flight, instant ignition straight as an arrow. Ejection was visible and recovery was close to the pad. Added 3 lb of lead shot as nose weight for stability and used an Aeropack retainer. Cert Flight: L2
08-15-2003 Al Sterner Ces RLD J285-8 Apogee - Perfect 5-10 mph winds Event: BuffRoc IV
- Nice flight with ejection just as the Warlok peaked. Pretty much stock except used 25 feet of 1 tubular nylon and a rocketman heat shield instead of the stock elastic junk.
07-16-2005 Rod Thrasher AT RMS I435-5 Very Early 0-5 mph winds Event: METRA
- Delay too short otherwise a nice flight. I thought a 9 pound Warloc would need a short delay.
07-17-2005 Rod Thrasher AT RMS I284-10 Apogee - NC Down 0-5 mph winds Event: METRA
- Perfect flight. Better delay.
09-10-2005 Rod Thrasher AT RMS I600-10 Apogee - NC Up 5-10 mph winds Event: NEPRA
- Nice flight! Great rocket. Great motor.
09-18-2005 Rod Thrasher AT RMS I366-10 Apogee - NC Down 5-10 mph winds Event: METRA
- Great Rocket and motor.
10-29-2005 Rod Thrasher AT RMS I435-10 Apogee - Perfect 10+ mph winds Event: NEPRA
- Great flight, but wind took it into the trees. Club had a 30' pole and I fished it down.
05-06-2006 Rod Thrasher AT RMS I366-10 Just Before 0-5 mph winds Event: METRA
- Great flight and recovery.
05-06-2006 Rod Thrasher AT RMS I435-10 Just Before 0-5 mph winds Event: METRA
- 7th flight on this rocket. Fast boost. One fin a little loose after landing.
05-13-2006 Rod Thrasher AT RMS I300-6 Very Late 5-10 mph winds Event: NEPRA
- Bonus delay and larger zipper. Can be fixed and flown again.
06-04-2006 Rod Thrasher AT RMS J420-10 Apogee - NC Down 0-5 mph winds - Repaired Zipper. Nice flight.
06-04-2006 Rod Thrasher AT RMS I435-10 Apogee - Perfect 0-5 mph winds - 10th flight on this Warloc.
06-24-2006 Rod Thrasher AT RMS I366-10 Apogee - Perfect 0-5 mph winds Event: NERRF 2
- 11th flight on this rocket. One fin lose on landing.
09-16-2006 Rod Thrasher AT RMS J420-10 Apogee - Perfect 0-5 mph winds - 12th flight. Another great one.

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