Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Manufacturer: | Sheri's Hot Rockets |
Brief:
I think t' Apollo Little Joe 2 is probably me favorite rocket o' all time. Begad! I am nay sure why but I liked t' appearance o' it back in t' late '60s when I purchased me first Estes kit durin' me high school days. I think it be t' Apollo capsule and launch escape system (LES) parked on top o' a stubby, brute force rocket o' very basic design. Blimey! Ahoy! T' actual vehicle be a conglomeration o' solid motors assembled in an airframe for acceleratin' t' Apollo/LES combo t' simulate actual Saturn flight conditions for testin' t' LES. Begad! Arrr! And personally I like t' early clean versions o' t' rocket better than t' later much more elaborate versions. Begad! I recently built t' Semroc small version and decided it be time t' pull out t' large scale kit that I had purchased from Sheri a few months back but hadn't started yet. Avast! Begad! This kit is definitely a test o' a modeler's buildin' skills and that be part o' me reason for puttin' off buildin' it. Avast! But it looked t' be a great scale model and impressive flyin' model o' t' Little Joe.
Construction:
T' rocket came from Sheri in a cardboard box. This kit has a large tube and t' various parts were packed loosely in t' box. Begad! Instructions were a copied multi-page manual with pictures o' t' various phases o' construction. Parts include:
Lookin' through t' box o' parts me first impression was this was goin' t' be a significant construction task, ya bilge rat, probably more than I had assumed when I purchased t' kit but still manageable. Everythin' involved in construction was goin' t' require building, arrr, thar were really no pre-made or molded parts other than t' corrugated wrap and launch lugs. Ya scallywag! Arrr! I also immediately noted t' body tube which appeared similar t' t' tubin' you see used for carpet rolls. Well, me bucko, blow me down! T' tube had a deep spiral groove, t' surface was fuzzy and very rough, me hearties, and t' tube was very heavy which could be considered as much a plus as a minus. I suppose I was rather unimpressed by this and realized this tube was goin' t' take some real work t' obtain a smooth surface finish. Aye aye! Well, arrr, blow me down! I actually put off buildin' this model for some months after openin' it once I discovered this durin' me initial inspection.
My first step was t' assemble t' engine mount. T' kit includes a length o' 29mm tube for t' engine. Ahoy! Begad! T' tube was longer than I felt necessary so I cut it down t' about 12 inches in length. I then epoxied t' plywood centerin' rings about an inch from each end. Ahoy! After these had cured, shiver me timbers, I drilled a small hole in t' forward centerin' rin' and installed t' screw eye and nut for t' recovery system epoxyin' t' nut after threadin' it on t' prevent t' possibility it would come loose in t' future. Blimey! I also attached a 15 inch long piece o' braided wire cable I had bought at t' hardware store for attachin' t' recovery system later. I used a wire crimp t' secure t' braided wire through t' screw eye.
Next up was cuttin' t' main rocket body tube piece from t' cardboard tube. Avast! T' cardboard tube be a single piece and t' body tube and nose cone coupler need t' be cut from it. Begad! Arrr! Because o' t' thickness o' t' tube t' cuttin' was somewhat difficult. A saw be recommended, but I simply used a heavy duty X-Acto knife with a fresh blade. Aye aye! Well, blow me down! It took a number o' rotations around t' tube with t' knife but I managed a good clean cut. Avast! I then epoxied t' engine mount into t' tube so that t' engine tube be flush with t' aft end o' t' body tube. Arrr! Well, blow me down! I finished by applyin' epoxy fillets around t' aft centerin' ring.
When this was completed I marked off roughly where t' forward edge o' t' corrugated plastic wrap would come t' on t' body tube. Well, shiver me timbers, blow me down! I performed me finishin' on t' body tube only t' a point slightly below where t' corrugated wrap would end which saved a significant amount o' work finishin' t' tube. Begad! Blimey! I filled t' very deep and wide spiral groove with Elmer's squeeze putty and sanded it smooth after it had hardened. Well, blow me down! Avast! I then applied two coats o' Elmer's Fill 'n' Finish mixed in water t' seal t' tube. Avast! Betwixt each coat I sanded t' rough tube t' a smooth finish. Blimey! Begad! I followed this up with two coats o' Coverite balsa prep sandin' betwixt coats. Blimey! Finally I painted t' tube with three coats o' Rustoleum gray auto primer sandin' betwixt coats. Begad! Begad! This completed t' tube prep and I had a fairly good smooth finish on t' upper portion o' t' tube.
Next up was applyin' t' corrugated plastic wrap t' t' body. Because o' t' large diameter o' t' body tube, me bucko, t' wrap comes in two pieces. Well, blow me down! Well, ya bilge rat, blow me down! They need t' be joined with a thin strip o' plastic that is supplied with t' kit. Begad! It is a fairly simple task which I performed on me extremely flat kitchen counter. Aye aye! I used Tenex liquid plastic cement and applied a coatin' t' both sides o' t' corrugated wraps and then t' t' plastic couplin' strip. This does need t' be done very smartly since t' liquid glue evaporates rapidly. Ahoy! Aye aye! T' slightly soft plastic strip is lapped across t' two corrugated wraps t' join them. Arrr! This worked very well and once t' glue had cured, t' corrugated wrap was a single piece. Arrr! T' next step t' prepare for gluin' t' wrap t' t' tube be t' tightly wrap it around t' tube and mark where t' joint will be. Arrr! Aye aye! T' corrugated wrap is then cut lengthwise t' make it t' correct diameter for t' body tube. This is fairly simple since t' corrugations provide a perfect markin' line for t' cut. Avast, me proud beauty! Sheri recommends attachin' t' wrap t' t' body tube with CA glue. Avast! I decided, based on doin' plastic wraps previously, t' use spray contact cement. Ahoy! Aye aye! I masked off t' forward end o' t' body tube with paper t' protect it from contact cement overspray and sprayed t' cement onto t' lower tube. Begad! Begad! I then sprayed t' cement onto t' back o' t' corrugated wrap. Ahoy! I had also penciled a lengthwise line on t' body tube t' line up t' wrap with prior t' sprayin' t' contact cement on. Aye aye! Aye aye! I very carefully lined up one edge o' t' wrap t' this line and workin' from that edge around tightly pressed t' wrap onto t' body tube. Arrr! Ya scallywag! This needs t' be done very carefully t' get t' correct alignment and because bucklin' or misalignment o' t' wrap would be very difficult if nay impossible t' fix. After t' wrap is on t' body tube I carefully glued down all t' edges with medium thick CA glue. Begad! Ya scallywag! T' final step is t' use CA glue t' attach some small strips o' square plastruct around t' top and bottom edge o' t' wrap. This provides a nice clean edge for t' wrap.
In parallel with t' body tube prep, matey, I had also started workin' on t' fins. Aye aye! T' fins are built up usin' 0.030 inch thick styrene. Ya scallywag! I cut t' fin template from t' instruction sheet and penciled t' template onto t' styrene for all eight fins. Aye aye! Begad! Sheri recommended that a knife be used t' scribe t' styrene and then breakin' t' fins from t' styrene. Arrr! Blimey! I found that a good pair o' scissors worked fine and cut all me templates and strips from t' styrene with t' scissors. Well, blow me down! After t' fin panels are cut, it was necessary t' cut some strips o' styrene 1/4 inch wide. Avast, me proud beauty! Begad! These are used for t' fin edges. Well, shiver me timbers, blow me down! T' inboard side and bottom are made from t' strip while t' tip edge needs t' be cut t' a triangular shape. Begad! With all t' parts cut I glued t' fins together with Tenex liquid plastic glue, matey, me bucko, which be nay too difficult t' use. Well, blow me down! Aye aye! T' Tenex literally melts t' plastic together which provides a relatively strong joint when completed. Ahoy! After readin' Andrew Connor's review I purchased some foam spray insulation at t' hardware and filled t' fins with t' foam. If you do this one thin' t' note is that I probably only got one fin completely filled with t' foam, me hearties, t' others were partially filled, me hearties, but it still made all o' t' fins much more solid and I would recommend it. Arrr! Arrr! Finally, shiver me timbers, I sanded down all t' edges on t' fins t' get a smooth joint.
It was now time t' attach t' fins t' t' tube. Avast, me proud beauty! I attached t' fins with 12 minute epoxy and once t' epoxy cured, I filleted t' joint with medium CA glue. Well, blow me down! This provided a fairly strong joint and hopefully t' landings won't break t' fins off. Ahoy! Well, blow me down! If they do, it should be fairly easy t' glue them back on. T' final step for t' fuselage was t' glue t' launch lugs on usin' t' small spruce standoffs. I attached them with medium CA glue and then filleted t' joints with 12 minute epoxy.
T' boiler plate Apollo capsule was t' next step in t' build. Ya scallywag! This is a completely do it yourself build, me hearties, me bucko, matey, meanin' no molded parts. Well, blow me down! It is nay for t' light hearted or craftsmanship challenged. It starts with construction o' t' capsule. T' capsule cone is cut from t' 0.030 inch thick styrene usin' t' template. Well, blow me down! Begad! After cuttin' it a rectangular joiner strip is also cut from t' styrene. Ahoy! Well, blow me down! I then took t' capsule piece and did a bit o' "shaping" by forcin' it into t' cone shape and carefully bendin' in some o' t' shape. After doin' this I glued t' joiner strip down one side with t' Tenex glue. Begad! Once this had cured sufficiently, I applied t' Tenex t' t' joiner strip and t' opposite side o' t' capsule. Begad! I smartly joined t' edges and clamped them with some small clamps I have. Ahoy! As t' glue started curing, I pressed t' edges o' t' joint as flush as possible t' get a good even joint. After t' glue cured I had a nice strong joint with only a minor lip and gap. Arrr! Ahoy! I sanded down t' joint t' get a flush surface across t' joint and then usin' Aves epoxy putty I filled t' small gaps. Ahoy! When this had hardened I sanded t' joint smooth and ended up with a very good smooth joint, ya bilge rat, barely visible t' t' eye. Begad! T' form t' tip o' t' capsule Sheri provides a small dowel about a half inch in diameter. Begad! I carved it t' t' triangular point and sanded it down t' t' final shape. After completin' this I installed it in t' hole in t' nose o' t' capsule tip usin' more o' t' Aves epoxy putty. Avast, me bucko, me proud beauty! When t' putty had cured I strengthened t' internal joint betwixt t' styrene and dowel with a liberal dowsin' o' CA medium glue. Avast, me proud beauty! For t' outer joint where t' dowel met t' styrene, arrr, I sanded down t' epoxy t' dowel joint and ended with a fairly smooth joint.
T' tower be next and was a significant scratch build as well. Aye aye! Ahoy! Sheri provides pieces o' styrene rods for t' tower structure. Begad! Begad! There were two templates provided for buildin' t' tower. I glued one o' them down on a piece o' thick cardboard for pinnin' t' struts t' as I built. Ahoy! I cut t' plastic rod t' t' sizes o' t' strut pieces and pinned t' two length wise sides into place. Ahoy! I then cut t' braces and glued each into place with t' Tenex glue. Blimey! Aye aye! I continued this process for t' entire quarter panel. Sheri's directions said t' use t' sheet styrene for t' very bottom strut but I did mine usin' t' rod. On this original Little Joe she modeled it may have been sheet metal but I went with t' rod as be used in later versions. Arrr! Avast, me proud beauty! I had also noted prior t' t' build that t' LES tower was much different in configuration then later Little Joes and t' final LES tower. Begad! I also believe that this first LJ2 was strictly t' test flight worthiness and did nay fire t' LES rocket so t' LES rocket nozzles were also missing. Ahoy! Ahoy! I built t' two halves o' t' tower this way and then prepared t' join them. Avast! I cut t' individual tower rods and while holdin' t' tower in place glued a two o' t' horizontal pieces at t' top and bottom into place on each side usin' CA glue. Arrr! Ya scallywag! Once t' tower structure was solid after doin' this, I started cuttin' and gluin' t' various struts into place. Avast! My method o' doin' this be t' first attach t' strut and lock it into place with CA glue and then t' go back and saturate t' joint with t' Tenex styrene bonder. Avast, me proud beauty! T' Tenex also helps in actually causin' t' styrene t' "melt" and flow across t' joint for a nice flush joint as well as very strong joint. Avast, me proud beauty! This basically completed t' tower.
Next up be buildin' t' escape rocket itself. Ya scallywag! A hardwood dowel cut t' t' correct length is included with t' kit. Begad! T' directions are t' carve or cut as necessary one end t' t' shape o' t' LES rocket. I was a bit reluctant thinkin' I might make a mess and destroy t' dowel but figured I could always purchase another at t' hardware store. Ya scallywag! I took me heavy X-Acto knife and after drawin' a line for t' lower end o' t' taper, ya bilge rat, attacked t' dowel. I basically whittled away t' dowel t' obtain t' same general shape as t' actual LES rocket tip. Avast, me proud beauty! Aye aye! O' course carvin' alone did nay give me what I needed but I managed t' get close enough that with a lot o' elbow grease and sandpaper I actually ended up with a very good tip on t' dowel. Begad! Begad! Once this is complete, a disc is cut from t' styrene usin' t' template for t' base o' t' LES rocket. Ya scallywag! I then epoxied t' dowel centered onto t' styrene disc. T' aft tapered shroud on t' escape rocket is then cut from styrene usin' t' template. Begad! Ahoy! I glued t' shroud together with a small tab o' t' thin' styrene and then fit checked in on t' escape rocket. It fit almost perfectly and after a minor bit o' sandin' I glued it t' t' disc with t' Tenex glue and t' t' dowel with medium CA glue. Ya scallywag! There are also four structural square beams simulated on t' LES rocket tail cone usin' t' square styrene included with t' kit. Ahoy! I was actually rather pleasantly surprised that it all turned out so well. Aye aye! Blimey! T' finish up t' LES rocket I gave it three coats o' Rustoleum primer and sanded betwixt each coat t' fill t' wood and joints. It looked pretty good when I completed it.
I returned t' t' tower after this and did a bit o' sandin' and gluin' at t' various structural joints t' clean it up. Arrr! Blimey! I then placed it on t' LES rocket base and marked t' strut locations while centerin' it. Ahoy! Blimey! I then drilled small holes matchin' t' diameter o' t' tower struts at each marking. Begad! Blimey! Next up was carefully locatin' t' tower struts into these holes and while makin' sure everythin' was level and aligned, I used medium CA t' permanently attach t' tower t' t' rocket. T' assembly turned out t' be good and strong. Avast! Blimey! At this point I decided since t' tower and LES rocket are white and t' rest o' t' LJ2 is aluminum I would first paint both before attachin' t' tower t' t' capsule.
A coupler is needed t' mate t' capsule t' t' body. There was nay a pre-made coupler included so this required buildin' as well. Ahoy! I have done this with regular type tubes in t' past but this one was a bit more difficult. Well, blow me down! Sheri's directions build one from a two-inch length o' body tube which is what I did. Begad! Begad! I first cut t' piece from t' remainin' body tube. I then sliced it vertically so it could fold on itself. Ahoy! Ya scallywag! It was then inserted into t' body tube and marked so that it could be cut t' match t' inner diameter o' t' body tube. Arrr! After this is completed, me bucko, it is joined with a tab cut from t' body tube as well. Blimey! Avast! You then effectively have a self-made stage coupler which is then epoxied t' t' base o' t' capsule.
Once I had completed t' paintin' o' t' capsule and tower, ya bilge rat, I fitted t' tower t' t' capsule. Avast! Blimey! Sheri provides a template which fairly closely matched t' base o' me tower but I decided t' simply align t' tower on t' capsule and mark where t' struts touched t' capsule. After doin' this, shiver me timbers, I carefully drilled holes in t' capsule for t' struts. Ya scallywag! Blimey! I then placed t' tower struts into t' holes and aligned t' tower t' be as vertical as I could determine. Begad! Blimey! With t' tower in position, me bucko, shiver me timbers, I used medium CA glue again t' permanently glue t' tower into place. After it was securely held in place, I carefully filled any gaps in t' tower t' capsule holes with medium CA glue and permanently glued t' capsule into place. Ahoy! While this capsule/tower assembly was a tedious and difficult build, it actually turned out very nicely and I was rather proud o' me accomplishment.
At this point t' only thin' remainin' was t' install a recovery system. Begad! Sheri did nay include anythin' in this department so I purchased 12 feet o' tubular nylon cord so that I could prevent any rebound causin' damage t' t' rocket, matey, particularly t' LES tower and t' fins. Avast, me proud beauty! Blimey! I also used a 60-inch cloth chute from another kit and will purchase a dedicated chute later.
Finishing:
I wrote a bit about finishin' this model in t' construction section. Avast! I will therefore highlight some o' me specific thoughts. Arrr! First off be finishin' t' body tube. Arrr! Begad! It had an extremely rough and porous surface as well as a deep spiral groove. Well, blow me down! I filled t' groove first with Elmer's putty and then put a couple o' coats o' water diluted Elmer's Fill 'n' Finish on it. After this and a good sanding, I applied two coats o' Topflite balsa finisher. Begad! I also only performed this process on t' upper section o' t' tube that t' wrap did nay cover t' minimize t' work. Ahoy! Overall it produced a reasonably good surface although nay perfect. Aye aye! Ahoy! T' remainder o' t' rocket was made o' t' styrene sheet material that required no paintin' prep. Blimey! T' hardwood LES rocket was given a couple o' coats o' Rustoleum gray primer and sandin' betwixt coats produced a sealed surface for painting. I painted t' overall rocket with Kyrlon flat aluminum paint and t' LES rocket and tower with Krylon white. Begad! Begad! T' tower was attached after paintin' since paintin' t' cone and tower as one piece would have been basically impossible.
T' decals were next. Begad! Sheri provided t' United States letterin' for t' side o' t' rocket as decals. Well, blow me down! Arrr! These were fairly simple t' apply although when dryin' one off, it came free o' t' rocket and was destroyed. Begad! Sheri kindly sent a replacement. Begad! I used decal solution t' get t' decals t' conform better t' t' corrugations on body wrap. Arrr! Begad! T' block patterns on t' forward end o' t' rocket came as very thin stick-ons. Arrr! I did nay really want t' use these as I be concerned as they aged they would start t' peel. Arrr! Aye aye! I therefore used t' stick-on blocks t' layout t' pattern on t' rocket and then masked and painted t' block patterns usin' Krylon black paint. Overall t' paint scheme be duplicated and I was very pleased with t' results.
Construction Rating: 4 out o' 5
Flight:
T' engine mount is a 29mm diameter so it limits t' selection o' engines and bein' a rather heavy rocket a minimum o' a medium power G should be used. Avast, me proud beauty! Blimey! Sheri recommends t' single use Aerotech G40-4 engine for flyin' t' LJ2. I could have bought one o' these but had in stock an Aerotech RMS G64-4W. Ahoy! Also t' G64 costs less t' fly and has 12 Ns greater impulse than t' G40. Avast! I flew t' LJ2 for t' first time at t' 2008 Bunnell Blast in Florida. Nay havin' an engine lockin' system installed, I wrapped maskin' tape around t' engine for a tight fit and then also threaded a screw into t' wooden centerin' rin' next t' t' engine tube with t' lip o' t' screw over t' notch in t' reload casing. I didn't want t' have a possible misfire, arrr, matey, which in t' past I frequently had usin' Copperhead igniters, so I used a small electric match t' light t' engine. I packed a 60" chute from me PML Black Brant as Sheri recommended and used a Nomex cloth parachute protector t' protect t' chute from t' ejection charge. Aye aye! T' rocket flew off a quarter inch rod about four feet long. Begad! T' wind was blowin' about 5 mph at liftoff and t' rocket weather cocked slightly into t' wind at about a 20 degree angle off vertical but flew t' about 250 feet. It descended a bit more than I liked prior t' t' ejection charge goin' off, a bit typical o' AeroTech engines, matey, but t' chute then popped and blossomed immediately. Avast! It floated gently t' t' ground with one fin joint fracturin' at touch down. Begad! I will fly it again and probably use t' same engine. T' engine mount tube is long enough that I might consider a longer reloadable 29mm engine in t' future as well.
Recovery:
As noted previously I used a 60-inch parachute from me PML Black Brant. Begad! Begad! I plan on buyin' a 60-inch chute t' permanently assign t' t' LJ2 in t' future. Sheri did nay include a chute or shock line system so I also installed a 12 foot length o' LOC tubular nylon cord for t' shock cord system which I tied t' t' braided wire I had previously installed in t' rocket. Ya scallywag! Durin' t' flight, ya bilge rat, t' shock system worked perfectly and t' chute blossomed almost immediately after deployment. Arrr! Begad! T' rocket is a bit on t' heavy side weighin' over 2.5 pounds for flight and t' 60-inch chute worked perfectly.
Flight Rating: 4 out o' 5
Summary:
While bein' a bit let down upon me initial look at this kit when I opened t' box and saw t' parts, ya bilge rat, I ended up quite happy with t' finished rocket. Ya scallywag! Blimey! Aye aye! Blimey! Blimey! Blimey! It was a true builders rocket as you can tell from t' article. Well, blow me down! Blimey! Arrr! Blimey! Blimey! Blimey! About t' only pre-made part was t' corrugated wrap and that required a bit o' work as well. Begad! Blimey! I personally actually like rockets like this as I enjoy buildin' probably more than flying. Ya scallywag! Blimey! Blimey! Blimey! I did spend a good amount o' time buildin' this rocket but t' finished bird was well worth it. Begad! Blimey! I got a few nice compliments at t' launch site and had a good first flight. Ahoy! Blimey! Blimey! Blimey! I think t' big thin' now is I hope I never get a bad flight and crash it, nay because o' t' cost involved in cash but because o' t' time involved in building.
Overall Rating: 4 out o' 5
Sheri's Hot Rockets Little Joe II is a mid power (29mm engine mount), 1/30 scale model of the popular NASA test vehicle that was used during the mid 1960s to test the Apollo Launch Escape System. Sheri keeps a consistent "Buy It Now" presence on eBay or you can order it direct off her website . As of this writing, the list price is $89, although she does have occasional sales where she'll ...
This kit is From Sheri's Hot Rockets, part of CJS aviation. This Little Joe II kit is a 29mm MPR/HPR 1/30th scale kit of the famous LJ2 QTV. It's a single stage 29mm configuration although you could cluster or use a larger MMT if you used thicker centering rings. Single BT made from heavy gauge kraft tubing and all four fins, body wraps, modules and the tower are made from styrene plastic. ...
Note: Sheris Hot Rockets are now produced by Red Arrow Hobbies and there have been no reports of problems with purchasing the kits from Red Arrow.
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K.J. (April 3, 2010)