Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar |
Overall Rating: | starstarstarstarstar_border |
Diameter: | 8.25 inches |
Length: | 95.00 inches |
Manufacturer: | Sheri's Hot Rockets |
Brief:
Sheri's Hot Rockets Saturn V is a high power (54 mm engine mount), shiver me timbers, 1/48 scale model o' t' famous NASA moon rocket (Sheri also offers this Saturn V with dual 29mm engine mounts although I wouldn't recommend it as it needs t' bigger motors). Sheri keeps a consistent "Buy It Now" presence on eBay or you can order it directly off her website. Avast! As o' this writing, t' list price is $449, matey, although she does have occasional sales where she'll knock t' price down a bit and/or offer free shipping. Aye aye! However, matey, matey, matey, as I've noted in other reviews o' SHR, most o' her kits are literally built t' order so be prepared for a wait.
Construction:
T' kit that I purchased includes t' followin' parts:
Sheri's kits do nay include parachutes or shock cords--she recommends 2 x 55-60" chutes for t' lower portion and a 60" chute for t' upper portion.
As was t' case with t' Sheri's Saturn 1B, shiver me timbers, I purchased me kit shortly after it be introduced, and Sheri subsequently made some improvements. Blimey! Well, me bucko, blow me down! After I noticed on t' website that t' Saturn kits had been improved with more cast resin parts, matey, shiver me timbers, I emailed askin' if I could purchase t' extra resin parts for t' Saturn V kits. Avast! Avast! Sheri was happy t' oblige. Well, blow me down! Well, ya bilge rat, blow me down! She'd upped t' price o' t' Saturn kits when she improved it, so I paid t' difference betwixt t' current price and what I'd paid. T' additional parts for t' Saturn V were:
These cast resin part are a vast improvement over t' original kit. Avast! Begad! As purchased, t' fairin' assemblies were manufactured from pieces o' body tube and plywood with each stringer an individual piece o' 1mm x 1mm styrene that be glued into place. Similarly all t' stringers on t' 2nd-3rd stage transition shroud were individually glued into place. Ahoy! I suspect many modelers wouldn't have bothered and just left t' stringers off.
As with t' other SHR models, me bucko, t' full size construction drawin' is a nice touch--providin' quick reference when you're unsure how it should go together. Aye aye! One downside is that this drawin' is so big that findin' somewhere t' put it is non-trivial. Aye aye! I ended up tackin' it t' t' wall...
T' 8.25" diameter main body tube is simply massive. T' 5.25" diameter third stage body tube be t' same tube used in her companion Saturn 1B kit, matey, and t' 8.25" tube is o' t' same 1/8" thick walled, shiver me timbers, uncoated type. Aye aye! As I did on t' S1B kit, matey, I pre-finished t' two big body tubes prior t' assembly by rubbin' slight thinned Elmer's Fill 'n' Finish into t' tube surfaces. After it dried, shiver me timbers, I sanded it down with 180 grit and then 300 grit sandpaper. Avast, me proud beauty! As before, this worked well, ya bilge rat, but workin' a body tube over 8 inches in diameter and 4 feet long took a long, arrr, long time. Begad! It turned out that this would become a common theme while buildin' this rocket.
Make no mistake, me hearties, shiver me timbers, me hearties, this is a big rocket. Begad! By far t' largest rocket I've built t' date. Ya scallywag! Effectively this be t' largest Saturn V rocket you can display with a typical 8 foot ceilin' (with t' display nozzles in place, it clears me 8ft ceilin' by little more than an inch). Ya scallywag! Previously, me bucko, me bucko, t' largest rocket I'd built had been t' 1/70th scale Apogee Saturn V (yes, matey, arrr, I do really like Saturns). Aye aye! Arrr! While t' difference betwixt 1/70th and 1/48th may nay sound like that much, remember t' effect is three dimensional, shiver me timbers, effectively makin' Sheri's Saturn 3 times t' size o' t' Apogee Saturn. Avast, me proud beauty! Arrr! With somethin' this big, even seemingly ordinary steps can be very time consuming. Arrr! Nay necessarily a bad thing, but be prepared. This is a long, me hearties, involved build.
That bein' said, t' actual build o' this rocket is relatively straightforward. Aye aye! Well, me bucko, blow me down! I think it may have been easier t' build than t' SHR Saturn 1B, although it did take quite a bit longer due t' t' larger size. Begad! T' cast resin engine fairin' assemblies were particularly appreciated. Begad! T' original instructions devoted 10 pages t' buildin' up t' fairings. Blimey! Blimey! With t' assemblies, shiver me timbers, it was reduced t' markin' t' body tube and gluin' t' fairings in place. Avast, me bucko, me proud beauty! I wrapped some coarse sandpaper around t' body tube t' sand t' appropriate body tube contour t' t' fairings, ya bilge rat, matey, thick CA was used t' attach t' fairings, me bucko, and then epoxy fillets were added for strength. Arrr! Begad! T' fins are then simply glued t' t' fairings (again, matey, ya bilge rat, attached with CA then epoxy fillets). Begad! Durin' an email exchange with Sheri after me Saturn be completed, ya bilge rat, shiver me timbers, she suggested addin' small screws t' anchor t' fairings t' t' body tube if you plan t' use particularly high thrust engines. Begad! Since mine was already finished, arrr, I didn't bother t' retrofit t' change, ya bilge rat, but if you're plannin' t' build one as a flier, shiver me timbers, it would be a worthwhile addition. Avast, me proud beauty! A more robust fin attachment may also be in order. Aye aye! Betwixt two flights and two cross-country shipments, matey, I think I've knocked every fin off at least once.
T' 49 pages o' instructions for t' basic assembly o' t' rocket are reasonably good (and as noted, ya bilge rat, t' full size construction drawin' is helpful), ya bilge rat, plus thar are several more pages o' templates and patterns for makin' t' various parts and pieces. Aye aye! Avast! As was t' case with t' Saturn 1B, ya bilge rat, me bucko, t' instructions for addin' additional details were weak--basically little more than "shape t' part from balsa stock per t' template", ya bilge rat, although anyone capable o' buildin' this rocket really doesn't need much more in t' way o' details. Arrr! T' cast resin detail parts were a nice additional, arrr, although they are nay all that detailed. Ahoy! Begad! Again, if you want t' make it super detailed you'll need t' modify or make parts from scratch. Ya scallywag! Arrr! Havin' already decided that this was t' be a flier, I didn't worry about addin' additional details.
Like Sheri's Little Joe II and Saturn 1B kits, matey, arrr, this kit uses corrugated styrene sheets t' simulate t' external stringers. Blimey! Begad! Blimey! T' corrugated sheets are pre-cut t' t' appropriate width, although with a main body tube circumference o' over 25 inches, ya bilge rat, it is necessary t' glue three sections o' styrene together t' get t' necessary length (usin' pieces o' t' 0.010" styrene as a doubler). Attachment o' t' wraps was similar t' that for t' Apogee Saturns: tapin' t' wraps in place then usin' CA t' seal t' edges t' t' body tube.
Again, as with Sheri's other kits, shiver me timbers, t' tube couplers need t' be cut down t' t' appropriate diameter, matey, although at least t' main body tube coupler is pre-cut t' length. Well, matey, blow me down! Blimey! (I fear cuttin' a length off that massive 8.25" body tube would have proved challenging.)
One step that proved somewhat difficult is centerin' t' upper stage transitions. Avast! Most kits provide centerin' rings t' locate t' smaller diameter body tubes in t' center o' t' transition. Arrr! Sheri's kits simply provide a solid bulkhead, and t' smaller tube is butt glued t' t' center o' t' bulkhead. Blimey! It works, but it is tricky t' get everythin' correctly positioned and centered. In fact t' entire 2nd-3rd stage transition be tricky. T' transition shroud is made from 0.030" styrene, matey, shiver me timbers, and per t' original instructions, t' stringers were individually glued into place, ya bilge rat, which was tedious and difficult. Aye aye! With t' additional cast resin transition shroud pieces, arrr, ya bilge rat, it's a relatively straightforward matter t' fit and glue t' cast shroud pieces in place. Arrr! However, one thin' I'd change be t' attachment o' t' shroud t' t' bulkhead: per t' instructions t' shroud overlaps t' bulkhead with t' corrugated wrap at t' top o' t' 2nd stage and everythin' would match up. However, matey, with t' cast resin shroud pieces on top o' t' styrene transition, t' base o' t' shroud ends up significantly larger in diameter than t' top o' t' 2nd stage, makin' for a very noticeable step. Aye aye! If I had it t' do over again, I'd fit t' shroud t' t' top o' t' bulkhead, arrr, then cover t' bulkhead/shroud joint with t' cast resin pieces.
This uses t' same cast resin Apollo capsule as t' Saturn 1B kit. Arrr! It's big, solid, and heavy at 8 ounces (although as it turned out, nay quite heavy enough). T' additional parts Sheri sent me included cast resin parts for t' escape tower. Blimey! However, as with t' Saturn 1B, shiver me timbers, I elected t' scratch build t' escape tower from styrene tubing. Avast! I think t' scratch built tower looks better, me bucko, and I sort o' enjoyed t' challenge.
Sheri includes ¼" launch lugs, matey, arrr, but given t' large size and weight, I felt these would be insufficient so I left them off and I fitted rail buttons. Well, blow me down! Unfortunately I overlooked a detail when addin' t' buttons: rails are rather wide and initially I didn't provide sufficient clearance for t' rail t' clear t' engine fairing. Avast, me proud beauty! Well, blow me down! I strongly recommend t' addition o' t' rail buttons--just be sure t' center them betwixt t' fairings.
Finishing:
As noted previously, arrr, I pre-finished t' body tubes before startin' assembly. But this thin' is big. Blimey! Blimey! Blimey! Blimey! Really big. Well, shiver me timbers, blow me down! Blimey! It takes a lot o' priming, sanding, and paintin' t' paint. Well, blow me down! Blimey! In fact, arrr, I went through more than three 12oz cans o' automotive primer and another three plus 12oz cans o' Krylon color while paintin' this Saturn. Avast! Blimey! I did make things a little simpler by paintin' t' main rocket before addin' t' detail parts, arrr, which I'd painted separately.
Maskin' for t' black roll patterns was particularly troublesome since sealin' around t' sharply defined corrugations was extremely difficult. Blimey! This be particularly true for t' 2nd-3rd stage transition. Avast! Avast! Despite me best efforts, me hearties, I got a lot o' bleed through o' t' black paint. Arrr! Well, blow me down! A trick that I successfully used t' 'patch' t' black bleed through on white/black patterns is dry film typin' correction tape. Begad! It's delicate t' work with, but it can provide straight, crisp color breaks, shiver me timbers, and t' color match is generally at least as good if nay better than touch-ups o' white paint with a paintbrush. Aye aye! Blimey! With a coat o' clear, matey, t' fix is nearly invisible. Blimey! I then used Krylon Chrome t' paint t' fins and lower fairings and t' Command Service Module.
T' waterslide decals by Space Model Systems are beautiful, reasonably easy t' apply, arrr, and come with good instructions on placement. Avast, me proud beauty! Aye aye! (Although once again, arrr, it's time consumin' t' apply them.) After maskin' off t' chrome painted areas, matey, a coat o' clear finished everythin' off [Note: you do not want t' clear coat chrome paint--it ruins t' chrome finish. Ya scallywag! Blimey! Blimey! Been there, done that.] T' effect is striking. It was a whole lot o' work, me hearties, but t' result be a really good looking, really big Saturn V model.
As purchased, I wonder if I would have built this kit (and if I had, thar be a good chance I would have left all those stringers off t' fin-fairings and t' 2nd-3rd stage transition). Well, blow me down! But t' post-purchase improvements make it worthwhile. Begad! I still have reservations regardin' t' rough surface body tubes and t' detail parts could have better detail, ya bilge rat, but overall it makes for a good kit. Blimey! I'd rate it betwixt a 3 ½ and 4. Ahoy! Begad! Givin' it t' benefit o' t' doubt, me hearties, I'll call it a 4.
Construction Rating: 4 out o' 5
Flight:
As previously noted, Sheri's kits do nay include recovery components. Although she recommended two 55"-60" parachutes for t' lower section, me hearties, I ended up goin' with a single 90" X-form chute, connected with a generous length o' nylon strap. Well, blow me down! Well, blow me down! For t' upper section I went with t' recommended 60" chute with a harness t' hold it horizontal t' protect t' escape tower on landing. Blimey! After me less than successful experience with t' Saturn 1B harness, matey, I decided on overkill. Aye aye! Blimey! I drilled a hole through t' top o' t' upper stage and t' upper transition coupler, ya bilge rat, epoxied a nut inside t' coupler, and threaded a (removable) eye bolt through t' attach t' harness. Well, blow me down! Begad! It also acts as a positive retention for t' upper transition and Apollo capsule.
For positive engine retention I added an Aero Pack 54mm engine retainer. Begad! Avast, me proud beauty! Sheri includes parts for a 38mm-55mm motor mount adapter, matey, but for it's first flight with a 38mm motor, I invested in an Aero Pack 38mm-54mm adapter. Begad! T' Aero Pack retainer and adapter are outside this review, arrr, but they are fantastic--definitely five stars!
With parachutes, chute protector, engine retainer, six cans o' paint, epoxy, etc. Arrr! (but less engine), this Saturn V weighed in at a whoppin' 12 pounds. Arrr! Before it be finished I'd gone into RockSim with Sheri's baseline file, matey, and decided an I211W-S would be ideal for t' first flight. Well, blow me down! Unfortunately t' weight in Sheri's RockSim file be rather optimistic, and me Saturn V was over 3 pounds heavier. Aye aye! Avast! Suddenly an I211 was marginal for velocity off t' rail, but since I'd already purchased t' motor and since a 38/480 be at t' time t' longest 38mm casin' I had, I was somewhat committed.
First flight was at "Fire in t' Sky 2009", arrr, better known as FITS, a major high power launch held in central Washington over Memorial Day weekend. Ya scallywag! Blimey! Showin' up at pretty much any launch with this rocket will make you a center o' attention, shiver me timbers, and FITS was no exception. Ya scallywag! Blimey! As previously mentioned, ya bilge rat, ya bilge rat, t' rail buttons proved t' be an issue when t' launch rail wouldn't clear t' fin fairings. Avast, me proud beauty! Blimey! (To help hide t' black buttons I'd centered them in t' black section o' t' roll patterns.) So thar be a false start and a minor thrash while I relocated t' rail buttons. Avast! Blimey! Begad! Blimey! But finally everythin' came together. Begad! Blimey! Aye aye! Blimey! Liftoff o' a big Saturn V is spectacular, and this be no exception. There be a slight weathercock off t' rail (remember that marginal velocity off t' rail) but t' flight was spectacular. Ya scallywag! Blimey! I'm nay sure about t' altitude. RockSim said 610 ft, me hearties, but it didn't look that high t' me. Arrr! Blimey! Perhaps me perception was fooled due t' t' large size. Avast, me proud beauty! Blimey! At any rate, me hearties, ejection occurred a moment after apogee and t' chutes opened shortly thar after. Aye aye! Blimey! There was a minor problem: t' lengthy shock cords for t' upper and lower sections become entangled so t' two sections came down together. Aye aye! Blimey! Begad! Blimey! T' main concern be that t' entangled shock cord had t' effect o' reefin' that big main parachute, me bucko, so descent was a little more rapid than I would have liked, however, touchdown damage was minor. Begad! Blimey! T' most serious bein' one fin bein' snapped off.
After repairs and a cross-country shipment came t' big test. This was goin' t' be me Level 2 Cert Flight at LDRS 28. Blimey! Motor selection was a 54mm J275W-S (we had a discussion at FITS, me hearties, shiver me timbers, it was agreed that t' only appropriate propellant selection for a Saturn V is White Lightning). Blimey! Ya scallywag! O' concern be t' rocket CG. With t' 38mm I211W, t' CG be already close t' t' recommended aft CG limit. T' J275W was goin' t' be roughly a pound heavier so I'd gone t' work on t' Apollo capsule. I drilled and ground out a large cavity in t' base o' t' capsule and epoxied enough lead shot in t' hole t' raise t' total weight o' t' Apollo from 8 ounces t' an even pound. O' course this had t' undesirable affect o' makin' t' rocket even heavier, but I saw little choice.
T' LDRS cert flight became a challenge but for an unexpected reason. Ahoy! Even at LDRS, ya bilge rat, a 7.5' Saturn V will make you a center o' attention and I be surrounded by photographers as I prepared t' rocket on an 8ft rail. Even with t' J275, RockSim predicted that it wouldn't reach stable velocity until a few inches before it left an 8ft rail. It be windy when t' Saturn V was launched, and I feared a weathercock off t' rail, me hearties, but t' flight was magnificent and almost perfectly vertical with a slow (by mod-rock standards) boost. Begad! RockSim had predicted 1600 feet, and that appeared t' be about right. Begad! Begad! Motor ejection occurred right at apogee, and both chutes opened moments later t' a round o' applause. Begad! Ahoy! I figured I was home free. Blimey! Wrong.
While t' lower half o' t' Saturn descended nicely, arrr, t' upper portion caught a thermal and started drifting. Ya scallywag! At times it definitely appeared t' be goin' up. Arrr! It drifted so far I lost sight o' it before it touched down. Well, me hearties, blow me down! Blimey! I knew I had t' try, ya bilge rat, but with little more than a general area where I thought it came down, shiver me timbers, I was nay optimistic that I would ever see it again. Avast! Begad! Blimey! If someone had asked me t' list everythin' that might have gone wrong on me cert flight, me bucko, I would never have even considered losin' t' rocket, shiver me timbers, but suddenly that be a very real possibility.
Amazingly, ya bilge rat, I found it. Aye aye! It took over four hours and two separate trips out. Begad! I found two other lost high power rockets and headed back t' t' launch area midway through t' search since I literally couldn't carry any more. Begad! I'd like t' say it was a properly devised search that yielded t' recovery, matey, shiver me timbers, but in reality it was more luck than anythin' else. Well, shiver me timbers, blow me down! After landing, t' wind had dragged it through a corn field knockin' t' escape power off in t' process, but I was able t' backtrack through t' knocked down corn and located t' missin' tower. T' result be a successful Level 2 high power certification.
Recovery:
A couple comments on t' flights: On large rockets like this that are intended t' come down in two portions, me hearties, ya bilge rat, I generally make a point t' insert t' upper section parachute first so that as t' sections pull apart, shiver me timbers, it'll be sure t' pull out t' lower section chute. Aye aye! This is especially important on this big Saturn V. Aye aye! Even usin' a fairly generous ejection charge (over 2 grams on t' second flight), t' chute protector has yet t' leave t' body tube. Avast, me proud beauty! Puttin' t' upper chute on t' bottom increases t' risk that t' two sections will get tangled (as happened on t' first flight), matey, but that is definitely preferable t' t' possibility o' t' lower section parachute failin' t' exit t' rocket. Ya scallywag! Also, as t' cert flight demonstrated, t' upper section can use a smaller chute (or if usin' a 60" chute reef it a bit).
This rocket is a fine flier that can't help but look magnificent in flight. Avast, me proud beauty! Blimey! I give it a full five stars.
Flight Rating: 5 out o' 5
Summary:
Be forewarned: buildin' this rocket takes a commitment well beyond t' $449 sticker price (plus I figure around another $200 for parachutes, ya bilge rat, motor retainer, me bucko, paint, arrr, etc.) It's big, complex, and will take a major commitment o' time t' do t' rocket justice. Aye aye! Arrr! I also remain less than thrilled with t' rough surface body tubes, although t' strength and weight is more readily justified on a big high power rocket such as this. T' cast resin parts that were added after me original purchase are a major improvement, but t' detail parts could be a little more detailed.
I really like this rocket. I don't know how often I will actually fly it. Blimey! It's nay trivial t' put so much time, me bucko, me hearties, effort, and loot at risk, matey, ya bilge rat, but it's a magnificent flier and pretty much guaranteed t' draw a crowd. Begad! Ahoy! But perhaps t' best endorsement I can give is, shiver me timbers, should this Saturn V meet an untimely demise, arrr, I'm pretty sure I'd build another.
Overall Rating: 4 out o' 5