LOC/Precision Minie-Magg

LOC/Precision - Minie-Magg {Kit} (PK-5) [1985-]

Contributed by Bryan M. Chuck

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

Rocket PicBrief:
LOC's Minie-Magg is a single-staged HP rocket popular with many fliers. Begad! Its stubby profile combined with a basic build make it a fun flier for larger motors, as well as smaller H motors for a lesser field.

Construction:
T' parts were contained in a durable plastic bag. Aye aye! Blimey! Ya scallywag! Blimey! T' inventory o' parts are as follows:

  • 1 nosecone, plastic
  • 1 kraft paper airframe 5.54" diameter (fin slots pre-cut)
  • 1 kraft paper 38mm motor tube
  • 2 birch ply centerin' rings
  • 3 birch ply fins
  • 1 elastic shock cord
  • 1 braided nylon shock cord mount
  • 1 nylon parachute (mine is bright orange)
  • 1 launch lug (1/2" diameter)

I felt t' components t' be a fine quality, ya bilge rat, and found no warpin' o' t' fins.

Outside o' t' Minie Magg's size, it is a basic build. Well, blow me down! Blimey! I used 15 minute epoxy for t' assembly and 30 minute on fillets. T' instructions are simple t' follow and are included on t' back-side o' t' info/picture card. I would speculate that a person should have no problems assemblin' this rocket from t' instructions LOC supplies.

Nose ConeAll t' parts fit together well and required minimal, ya bilge rat, if any sanding. Aye aye! I decided t' deviate slightly from t' instructions, though, me bucko, ya bilge rat, in order t' add a few things t' improve t' longevity o' me Minie-Magg. Blimey! T' supplied shock cord mount is epoxied on t' inside side o' t' airframe, arrr, and uses elastic for shock cord material. I did nay feel confident usin' this arrangement, so I put an eyebolt in t' forward centerin' rin' t' anchor t' shock cord. Ya scallywag! Begad! I also opted t' use 20' o' tubular nylon in lieu o' t' elastic. Attachin' t' cord t' t' eyebolt was done via quick link. Blimey! I also felt t' plastic eyelet on t' nosecone would prove weak on this larger rocket. Ahoy! Avast! T' remedy this, I drilled a 1/2 hole in t' base o' t' nosecone, passed me shockcord through it, and passed it back through t' hole pre-existin' at t' bottom center o' t' nosecone. Blimey! Thus far, ya bilge rat, it has held up well.

Another minor "CON" t' this rocket be t' fins do nay go all t' way t' t' motor tube. Begad! T' make amends, I decided t' keep t' aft centerin' rin' off until after I put t' fins on. On t' inside o' t' airframe where t' fin tabs came barely through, arrr, I put 2 inch wide fiberglass bandaids t' length o' t' fin root.

Lastly, arrr, shiver me timbers, I added t-nut & brass strip Kaplow-style motor retention before addin' t' aft centerin' ring.

As for building, arrr, here are me thoughts: PROS 1. Blimey! Begad! Quality o' airframe, me hearties, wood components, me bucko, me bucko, and nosecone. Ya scallywag! 2. Exceptional fittin' o' parts. Avast! 3. Avast, me proud beauty! Avast, me proud beauty! Simplicity o' build/instructions, ya bilge rat, matey, shiver me timbers, even if built "stock."

CONS 1. Avast! Shock cord attachment and shock cord material. 2. Begad! Begad! Fins are nay t' t' motor tube. Well, blow me down! Begad! 3. Aye aye! Lack o' motor retention, shiver me timbers, me hearties, which is fairly common in mid-power and HP rockets.

Finishing:
T' finish off me Minie-Magg, I filled t' tube spirals with 3M Spot Putty. Arrr! On t' fins, me bucko, I used a couple coats o' SIG sandin' sealer from t' local R/C plane store. After sandin' things smooth, ya bilge rat, I employed two light coats o' white Krylon primer, sandin' betwixt coats. Well, blow me down! For me color coat, I chose Glossy Krylon Grape. Blimey! Begad! I chose this color in honor o' me friends' daughter, whose name is Violet and likes rockets.

Construction Rating: 4 out o' 5

Rocket PicFlight:
Flight prep for this rocket is easy. Blimey! Blimey! It's wide enough t' fit all recovery items with no hassle. Avast, me proud beauty! Avast, me proud beauty! Blimey! Instead o' t' large amount o' waddin' t' Minie Magg would require, a 18"x18" piece o' Top Flight Nomex be used. Blimey! I also added one o' their Nomex sleeves for good measure. Avast, me proud beauty! Blimey! T' LOC catalog notes that one could fly this rocket with a G80 SU motor.

T' maiden flight o' me Minie-Magg was at Black Rock XII in Nevada. I chose an I161 medium for t' ice breaker. It was a good choice and recovery happened without a hitch. Aye aye! Ya scallywag! At this point, matey, I've gone as large as an I211. Aye aye! All flights have been arrow straight, and exceptional "rock & roll" motors for this rocket seem t' be t' I300, I357, and o' course, me hearties, me hearties, t' I211. For good measure, shiver me timbers, me breakdown o' motors used in t' Minie-Magg are thus:

  • H123
  • H242
  • I161
  • I300
  • I357
  • I211

I've had only one incident when t' fin popped loose. Avast, me proud beauty! In light o' that, I would rate t' Minie-Magg's flyin' and prep at a top notch 5.

Recovery:
No cons regardin' flight recovery after swappin' out t' shock cord and usin' a different anchorin' system. Pros: Stock 'chute seems adequate.

Flight Rating: 5 out o' 5

Summary:
I'm quite pleased with this rocket. In me opinion, shiver me timbers, arrr, it only needs a couple o' things added t' improve it: Shock cord and shock cord attachment. Well, blow me down! Well, blow me down! Also fin root strengthenin' is probably a good idea. Arrr! Arrr! Even if built stock, t' parts are outstandin' in their fit and quality, and t' build is straightforward. Overall, arrr, it's a fun flier. Avast! I'm constantly amazed at how many Minie-Magg's I see at launches. Ya scallywag! Avast, me proud beauty! I believe it's a fine L1 rocket on t' H123, shiver me timbers, matey, arrr, also.

Overall Rating: 4 out o' 5

Other Reviews
  • Loc Precision Minie-Magg By Theresa Pantoja (August 19, 2020)

    This kit is great for people who want a fun high powered rocket. The size is not cumbersome and the build is not complicated.   Components Model:  07653 Skill Level 3:  Average Skills Needed Length:  37.000" (93.98 cm) Weight:  53.000 oz (1502.52 g) Diameter (Max):  5.540" (14.07 cm) Fin Count:  3 Motor Size:  ...

  • LOC/Precision Minnie-Mag By David Hunt (January 18, 2017)

    This was my first High Power Rocket.  I certified L1 and L2 with this same rocket.  It is very easy to build.  LOC"s "LOC-N-Fin" method of using fin tabs inside to air frame worked very well.  With the tabs installed the fins naturally fell into the proper perpendicular orientation.  With the big 5.5" air frame applying epoxy to all the interior parts was very ...

Flights

Comments:

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D.G. (August 1, 2001)
I like to fly my Minie Magg on Quick burning motors. So far I have flown it on an H220-10T, and a H242-10T. I choose the medium delay because I have an magnetic apogee sensor in the nose cone to deploy the parachute. Next time I fly it, I think I'll use an H210-10 Redline motor. I also plan to try it with an I357 in the near future.
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J.T. (September 19, 2001)
I have built and launched my Minie Magg on H180,H210R,H242,and the I218R. All with med. delays all perfect flights. Changes made to kit are as follows: shock cord 9/16 tube nylon, I-bolts in top center ring + in nose cone{20 ft. shock cord),pulled out rear centering ring and ran 30 min. epoxy down fin root to body tube on inside, let motor tube stick out 1/2" and installed slimline motor retainer. the I218 Redline is a killer looking rock and roll motor for this rocket, use a med. delay.
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J.J. (January 1, 2002)
I thought that this kit was of great quality and was very easy to build. One con is that I did not care for the way that LOC said to attach the shock cord to the airframe. To solve this problem I drilled a hole in the forward centering ring and put a screw eye through it. I then added a 15' section of nylon strapping to act as the shock cord. A second MAJOR con was the fact that the fins did not go all the way to the motor mount tube (I think that all manufactures of how power rockets should take a good look at how much people hate this and fix the fins so they will go all the way to the MMT tube). I decided to do the same thing as the first reviewer and add a small strip of fiberglass cloth to the inside of the tube to help secure the fins. Next, I covered the tube and fins with wood glue to fill in the grooves and cover the fins (check out my tip about filling in spirals with wood glue on the "TIPS" page). Finally, the last thing that I did was cut the launch lug in half and angle the forward end of each. I do not have any flight logged with this rocket yet but I hope to use a PRO38 engine at my next local launch. In all this is a fairly good kit except for the fact that the fins do not go all the way to the motor mount tube.
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S.M. (February 15, 2002)
A nice stout kit for the money with a couple things to improve upon. I ended up peeling off the entire "glassine" coating, which seems to be some type of plastic film which sands poorly and refuses to really bond with any type of adhesive. I also made new fins which go through to a 54mm motor mount, with internal and external fillets as well as generous fillets of high temp epoxy (like PC-7) on the MM tube. I learned my lesson on a Graduator by trying to strengthen the stock fin system, which added weight, and is it still developing cracks in the fillets as I fly it more. This time, the rocket feels bulletproof, with fins you can bend significantly with no danger of cracking or failure. This rocket will be extended with another length of body tube and hopefully will be my L2 cert unit this spring. In short, peel the plastic, use sandable primer or 'glass to seal the tube, make new fins that reach the MM tube, and replace the elastic with Nylon or Kevlar, and it's a 1st class rocket that will live through many flights with no damage. Hope this helps someone!
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M.L. (February 7, 2007)
The Minie Mag kit I purchased in 2007 has a different fin mounting system than the models mentioned here. The fin tabs have a slot cut through them and once placed inside the body tube there is plank piece that slides into the slot on the fin. The plank touches the body on each side of the fin. It was a very snug and secure fit. Whish all my kits came with this method.

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