LOC/Precision Warlock

LOC/Precision - Warlock

Contributed by Nathaniel Gilbert

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstarstar_border
Manufacturer: LOC/Precision

LOC/Precision Warlock

Brief:
A short fat rocket capable o' flyin' on H through J engines.

Construction:
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 centerin' 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 me L1 certification rocket. Blimey! Ya scallywag! I built it stock but added a 38mm Aero Pack motor retainer, a Nomex® heat shield, and a forged eyebolt.

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

LOC/Precision Warlock After finishin' t' rocket, matey, I removed t' maskin' tape that I had wrapped around t' end o' t' motor mount and attached t' Aero Pack with JB Weld. Arrr! Avast! I then hooked up t' recovery system. First I threaded t' shock cord through t' 2 holes I had drilled in t' nose cone and pull one end o' t' shock cord through t' loop on t' other end. Aye aye! I then slid t' shock cord through t' hole in t' Nomex heatshield and used t' included quicklink t' attach t' shock cord t' t' eyebolt installed in t' forward centerin' ring. Well, blow me down! I then used t' standard attachment method on t' parachute (around t' shock cord and through itself) t' attach t' parachute, matey, finishin' t' rocket.

Pros:

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

Cons:

  • Minimal instructions
  • No motor retention included
  • Eyebolt inadequate for high power flights
  • No precut fin slots
  • Fins do nay reach motor mount (since I built this kit, it has been redesigned with Loc-N-Fin Technology)

Finishing:
I decided t' go all out on t' paint job for this rocket, me bucko, ya bilge rat, me bucko, so I spent about three weeks finishin' it.

I started by fillin' in t' tube spirals with watered down Elmer's Wood Filler. After sandin' off t' excess wood filler with 100 grit sandpaper, shiver me timbers, I primed t' rocket with gray Krylon Primer. I then sanded this down with 220 grit sandpaper and applied another layer o' primer. Begad! After repeatin' this several times (durin' later coats I wet sanded), matey, I finally had a near perfect finish. Ahoy! Begad! I then painted t' body o' t' rocket with yellow Krylon and t' nose cone with red Krylon paint. Ahoy! I applied several coats, me bucko, wetsandin' betwixt coats with 400 grit sandpaper. Well, blow me down! After finishin' paintin' t' body o' t' rocket yellow, I masked off t' top and bottom o' t' rocket with 40mm Tamiya maskin' tape (this be t' extremely high grade kind) and covered t' rest o' t' rocket by tapin' garbage bags on with cheap maskin' tape. Well, blow me down! I then painted t' top and bottom o' t' rocket red. After I had applied several coats o' red and it had dried, me hearties, I carefully removed t' maskin' tape. Avast, me proud beauty! Arrr! I then masked off t' ends o' t' rocket again and painted it with Krylon black. Begad! After removin' t' maskin' tape and garbage bags, I painted t' entire rocket with Krylon clear coat.

Construction Rating: 4 out o' 5

LOC/Precision Warlock

Flight:
I first flew this rocket at NOVAAR for me L1 certification flight. Ya scallywag! Ahoy! After packin' t' recovery system, shiver me timbers, arrr, loadin' t' Aerotech I211 motor, and passin' t' RSO's safety check, matey, I loaded t' rocket onto t' pad. Ya scallywag! Begad! T' flight was absolutely beautiful until t' motor suffered a premature ejection almost immediately after burn out. Ya scallywag! Well, blow me down! Despite t' early ejection, arrr, I still thought that I had successfully certified until I reached t' rocket, which landed within 50ft o' t' pad, me hearties, shiver me timbers, where I discovered that t' shock cord had torn an enormous 24 inch zipper in t' body tube.

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

I be able t' repair t' rocket usin' part o' a LOC coupler and some fiberglass. T' rocket isn't perfectly round anymore, arrr, but it still flies perfectly and you can't tell from more than 10ft away.

Since t' mishap, I have flown t' rocket once more at a METRA launch on another I211. Avast! Aye aye! T' flight was beautiful and t' parachute ejected at t' correct time.

LOC/Precision Warlock

Recovery:
As long as t' motor retention and parachute protection are added, this rocket has perfect flights. Avast! Avast! Blimey! Because o' it's shape and size, it's a good low flyin' rocket for smaller club fields.

Flight Rating: 4 out o' 5

Summary:
This is a great lookin' rocket. It could be improved (motor retention, me bucko, precut fin slots, parachute protection, matey, better instructions, etc.) but can by upgraded by any flyer with a lot o' mid or high power experience into a fantastic rocket. Blimey! I would definitely recommend this kit.

Overall Rating: 4 out o' 5

Other Reviews
  • LOC/Precision Warlock By Joe Cacciatore

      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, three plywood fins, two 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 bu ...

Flights

Comments:

avatar
J.J.K. (August 19, 2006)
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

comment Post a Comment