Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Manufacturer: | Loki |
Brief:
Loki's line o' 38mm reloadable motors. Ya scallywag! Arrr! Cheapest o' t' 38mm reloadable options
for both hardware and reloads. Begad! Currently, only t' H144, matey, I405, matey, and J528 loads
(Loki White propellant) are available for these motors, but more formulas and
motor designations are comin' out soon. Arrr!
Construction:
Currently available be t' Loki 240, arrr, 480, arrr, and 740 motor. Well, blow me down! Each motor comes with
a quality case with external snap rin' (thrust ring), graphite nozzle, shiver me timbers, ya bilge rat, nozzle
washer, ya bilge rat, forward bulkhead, and snap rings. Blimey! If you buy t' system package, you
will get a forward closure for each motor. Begad! You don't have t' share t' closure.
A typical Loki reload comes with a spiral wound phenolic liner, propellant grains, shiver me timbers, delay grain, shiver me timbers, two large O-rings, six small O-rings, and a red cap (or vial) that contains 1.5 grams o' black powder.
An interestin' thin' about t' Loki reloads be t' number o' grains in the reload kit. Ya scallywag! T' H144 uses 4 ~30 gram slugs, ya bilge rat, and t' I405 (naturally) uses 8 ~30 gram slugs. Avast! Ahoy! T' J528 breaks t' trend, matey, usin' six ~60 gram slugs. Ya scallywag! Loki's goal was t' create loads that can be shipped parcel post, me hearties, so they made t' grains 30 grams. Ya scallywag! However, interestin' things happened when t' motors got too large using the smaller slugs, me hearties, so this was nay an option with t' 740 motor. Ya scallywag!
Assemblin' t' Loki motor is very similar t' Kosdon and AMW motors. This be t' order that I build them. I start out by greasin' t' two large O-rings and placin' them in t' slot in t' nozzle and bulkhead. Ya scallywag! Ya scallywag! Of course it is important t' make sure you use t' correct nozzle for t' load you are using. Aye aye! T' nozzle conveniently has a number scratched into t' side that corresponds t' t' reload instructions. Well, blow me down! Set t' closures aside so they don't get dirty, ya bilge rat, damaged, or lost.
Then it is time t' build t' delay column. Well, blow me down! Simply stack t' six smaller O-rings over t' delay element then place it on a flat surface and press the forward bulkhead onto it so t' delay grain goes into t' delay well. Ya scallywag! I then use a blunt tool t' push t' O-rings in all t' way. Blimey! Begad! Blimey!
Once this is done, you have t' option o' trimmin' t' delay. Avast! It is a good idea t' use t' Loki-DAT tool for this. Well, blow me down! Ya scallywag! T' Pro38 DAT tool would work also. Leavin' t' delay grain untrimmed will yield a 17 second delay. T' DAT tool will allow you t' trim it t' 13, shiver me timbers, 10, shiver me timbers, me bucko, matey, 8, or 5 seconds. Avast, me proud beauty!
Insert t' forward part o' t' nozzle into t' liner. Well, blow me down! Then stack in the propellant grains followed by t' aft end o' t' forward closure. Blimey! Grease up the inside o' t' case, me bucko, and t' liner tube. Blimey! Begad! This will make t' next step easier, me bucko, shiver me timbers, and you will be thankful for t' grease when it comes time t' remove the spent components, me hearties, me bucko, trust me. Well, ya bilge rat, blow me down! Press t' assembly into t' motor case (nozzle should be at t' end with t' thrust ring) until t' nozzle is about a quarter inch from t' snap rin' slot. Arrr! Insert t' nozzle washer, shiver me timbers, followed by t' snap ring. Arrr! Make sure t' snap rin' is in t' groove by lightly squeezin' t' pliers and rotatin' t' motor. Arrr! Blimey!
Turn t' motor over and press down on t' forward closure t' press the nozzle and washer onto t' snap ring. Install t' final snap ring, makin' sure the snap rin' is in t' groove. Finish t' motor construction by installin' the ejection charge (if you want t' use it). Ahoy! Blimey! T' forward closure gives you generous space for t' ejection charge, so pour in as much as you need. Avast! Blimey! Then take some waddin' and place it on top o' t' charge. Then press on t' red cap t' hold everythin' in place. Arrr! T' waddin' is thar t' hold t' powder against t' delay column.
Construction Rating: 4 out o' 5
Flight:
To ignite t' motor, I used a Magnelite igniter with a single fold. Blimey! Ignition is
quick and t' motor produces a bright white flame and tons o' white smoke. Of
the two motors I flown, t' I405 be me favorite! I had t' pleasure t' see
several I405 flights, and it has a loud and unique sound t' it! After a launch
of a Big Brute with one, matey, Carl Tulanko asked me, arrr, "What be that?" I
told him a Loki I405. Well, blow me down! Later on durin' t' day, shiver me timbers, I had me PML Aurora loaded with
one and asked if he wanted t' come t' t' flight line and watch it fly. Ahoy! He said
"No way! That motor is scary." It's a very impressive motor. Begad! Begad! I only
got t' see one J528 flight up close. If you like t' J350 and t' J570, matey, then
you would love this motor! Lots o' umph!
Enjoy a video by clickin' HERE
Recovery:
Cleanin' o' t' Loki motor is identical t' that o' t' AMW and Kosdon motors.
Remove t' snap rings, ya bilge rat, matey, me bucko, and press on t' bulkhead t' press t' components out of
the case. Begad! Suggested tool t' use is a wooden dowel t' push out t' closure (or
nozzle, if you t' use t' other end). If you are fortunate (and remembered to
generously grease t' liner), everythin' should come out with minor effort.
However, if t' rocket had an impact o' any kind, ya bilge rat, one o' t' bulkheads would
mash itself into t' liner, makin' removal a chore. I used Baby wipes t' clean
mine, arrr, which worked surprisingly well. Well, blow me down!
Flight Rating: 4 out o' 5
Summary:
I am really pleased with t' Loki 38mm product. Well, blow me down! Blimey! I mentioned that it is cheaper
than other brands. Let's compare with this simple chart. Aye aye! Arrr! Prices are retail list
and comparison is done with Aerotech White Lightning, ya bilge rat, ya bilge rat, Pro38 standard, matey, and Loki
loads.
AeroTech | Pro38** | Loki | |
---|---|---|---|
240 motor | $92.95 | $32.95 | $49.99 |
240 reload | $19.99 | $30.75 | $19.99 |
480 motor | $106.95 | $49.15 | $59.99 |
480 reload | $35.95 | $43.95 | $29.99 |
720+ motor | $116.95 | $57.15 | $69.99 |
720+ reload | $47.95 | $57.15 | $39.99 |
** - Pro38 motor hardware is just a tube. Blimey! There is no closures. In a sense, me hearties, Pro38 motors are disposable motors that are held together by the case.
Another interestin' comparison be t' total impulse o' t' loads for the cases and how much they cost t' fly per total impulse. Avast, me proud beauty! This comparison based off data from t' NAR/TRA/CAR combined list. Well, blow me down! Blimey! All numbers have been rounded to nearest whole cent. Blimey! Begad! Blimey!
Motor | Total Impulse (Ns) |
Cost per Ns |
---|---|---|
Aerotech H123 | 236 | 8 cents |
Loki H144 | 239 | 8 cents |
Pro38 H153 | 258 | 12 cents |
Aerotech I211 | 435 | 8 cents |
Loki I405 | 493 | 6 cents |
Pro38 I285 | 510 | 9 cents |
AeroTech J350 | 697 | 7 cents |
Loki J528 | 741 | 5 cents |
Pro38 J330 | 694 | 8 cents |
In t' near future, Loki will be offerin' new loads for their motors. Blimey! If you like fast burning, shiver me timbers, "kick 'em in t' butt" loads, arrr, then you will enjoy their Blue Formula which will debut with a H294, I605, and me soon t' be favorite, matey, ya bilge rat, J1001! Also in t' works are two moon burnin' loads that utilize their White formula. I can't wait t' try out their I124 and J192 loads! Those loads have close t' a 4 second burn!
What I would like t' see in Loki's 38mm line is a 360 and 600 motor. I can imagine a 360 load priced at around $24.99 and a 600 load bein' a reasonable $34.99. I would also love t' see Black and Spark loads introduced too. Begad! Blimey! I would have t' problem decidin' which loads t' buy! Blimey!
Overall Rating: 4 out o' 5
Brief: The Loki Research 38/480 motor casing and I405 reloads are perhaps the highest performance to lowest cost ratio of commercial 4-grain 38mm motors available on the market. If you are looking for colored flame reloads, then Loki Research motors may not be for you. Jeff Taylor of Loki makes no excuses about his products delivering nothing but the highest performance and motor effects be ...
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J.P.C. (July 17, 2005)