Sheri's Hot Rockets Saturn V

Sheri's Hot Rockets - Saturn V {Kit}

Contributed by Tim Doll

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar_border
Diameter: 8.25 inches
Length: 95.00 inches
Manufacturer: Sheri's Hot Rockets

Sheri's Hot Rockets Saturn V

Brief:
Sheri's Hot Rockets Saturn V is a high power (54 mm engine mount), 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. As o' this writing, t' list price is $449, ya bilge rat, although she does have occasional sales where she'll knock t' price down a bit and/or offer free shipping. However, 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:

  • 1 main body tube, me bucko, 8.25" x 49"
  • 1 tube coupler, me hearties, 8.25" x 3"
  • 1 upper stage body tube 5.25" x 24"
  • 1 3.125" Service Module body tube
  • 1 Styrene sheet 0.010" thick
  • 1 Styrene sheet 0.030" thick
  • 1 Fiberboard stock 1/8" x 12" x 12" (for display nozzle mount).
  • 4 ¼" ply centerin' rings (not all t' same, arrr, but they're marked)
  • 6 corrugated styrene wraps
  • 2 sheets white cardboard stock
  • 125 1mm x 1mm styrene detail strips
  • Cast resin Apollo Command Module
  • Cast resin LES rocket
  • 5 Cast resin F1 Main Engine display nozzles
  • 38mm motor mount tube with 54mm-38mm reducer rings
  • 54mm motor mount tube
  • 5 pieces 3/32" round styrene tubing
  • 1 Shock Cord eyelet w/ blind nut
  • 1 Shock Cord eyelet with screw end
  • 1 piece 1/8" x 1/8" x 3" long hardwood stock
  • 1 piece 3/8" round by 6" long hardwood dowel
  • 2 piece 3/16" round by 4" long hardwood dowel
  • 3 piece ¼" x 3/8" x 36" long square balsa stock
  • 2 piece 3/16" x 3/8" x 36" long balsa stock
  • 1 piece 3/16" x 1/4" x 18" long balsa stock
  • 2 "L" brackets with nuts/bolts/washers
  • 5 flathead brass screws
  • 2 wood screws
  • 2 ¼" launch lugs
  • 1 set waterslide decals
  • 1-¼" x 1" x 1" fiberboard anchor block for screw eyelet
  • 1/8" x ¾" x 6 ¼" plywood fin structure
  • 4 Bolt/Washer/Blind nut assemblies (optional for LEM section attachment)
  • Full size construction drawing
  • 49 page Instruction manual
  • Template Manual
  • CD-ROM copy o' t' instructions with a RockSim file

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 be t' case with t' Sheri's Saturn 1B, me bucko, me hearties, I purchased me kit shortly after it be introduced, and Sheri subsequently made some improvements. Well, matey, blow me down! After I noticed on t' website that t' Saturn kits had been improved with more cast resin parts, I emailed askin' if I could purchase t' extra resin parts for t' Saturn V kits. Sheri be happy t' oblige. Well, blow me down! She'd upped t' price o' t' Saturn kits when she improved it, matey, so I paid t' difference betwixt t' current price and what I'd paid. Avast, me proud beauty! T' additional parts for t' Saturn V were:

  • 4 engine fairin' assemblies
  • 4 fins
  • 4 piece upper stage transition shroud
  • 5 display engine nozzles (nicer than those originally included)
  • 4 "Reaction Control Systems" (the maneuverin' rockets on t' command module)
  • Escape tower parts (I didn't use these)
  • A number o' detail parts

Sheri's Hot Rockets Saturn V

These cast resin part are a vast improvement over t' original kit. Arrr! 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. Ahoy! Similarly all t' stringers on t' 2nd-3rd stage transition shroud were individually glued into place. Ahoy! Avast! I suspect many modelers wouldn't have bothered and just left t' stringers off.

As with t' other SHR models, t' full size construction drawin' is a nice touch--providin' quick reference when you're unsure how it should go together. Ahoy! One downside is that this drawin' is so big that findin' somewhere t' put it is non-trivial. Blimey! I ended up tackin' it t' t' wall...

T' 8.25" diameter main body tube is simply massive. Ya scallywag! T' 5.25" diameter third stage body tube be t' same tube used in her companion Saturn 1B kit, arrr, and t' 8.25" tube is o' t' same 1/8" thick walled, me hearties, ya bilge rat, me hearties, uncoated type. As I did on t' S1B kit, arrr, me bucko, I pre-finished t' two big body tubes prior t' assembly by rubbin' slight thinned Elmer's Fill 'n' Finish into t' tube surfaces. Aye aye! Well, blow me down! After it dried, ya bilge rat, I sanded it down with 180 grit and then 300 grit sandpaper. Ahoy! As before, this worked well, but workin' a body tube over 8 inches in diameter and 4 feet long took a long, me hearties, long time. Aye aye! Arrr! It turned out that this would become a common theme while buildin' this rocket.

Sheri's Hot Rockets Saturn V Make no mistake, ya bilge rat, shiver me timbers, shiver me timbers, this is a big rocket. Arrr! Begad! By far t' largest rocket I've built t' date. Avast, matey, me proud beauty! 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). Aye aye! Previously, t' largest rocket I'd built had been t' 1/70th scale Apogee Saturn V (yes, I do really like Saturns). Avast, me proud beauty! Aye aye! While t' difference betwixt 1/70th and 1/48th may nay sound like that much, arrr, remember t' effect is three dimensional, effectively makin' Sheri's Saturn 3 times t' size o' t' Apogee Saturn. Ya scallywag! With somethin' this big, me hearties, arrr, even seemingly ordinary steps can be very time consuming. Well, blow me down! Begad! Nay necessarily a bad thing, but be prepared. Blimey! This is a long, matey, involved build.

That bein' said, me hearties, me bucko, t' actual build o' this rocket is relatively straightforward. Avast! Avast, shiver me timbers, me proud beauty! Blimey! I think it may have been easier t' build than t' SHR Saturn 1B, ya bilge rat, although it did take quite a bit longer due t' t' larger size. Ahoy! Blimey! T' cast resin engine fairin' assemblies were particularly appreciated. Aye aye! T' original instructions devoted 10 pages t' buildin' up t' fairings. With t' assemblies, me bucko, it was reduced t' markin' t' body tube and gluin' t' fairings in place. Blimey! Avast! Blimey! I wrapped some coarse sandpaper around t' body tube t' sand t' appropriate body tube contour t' t' fairings, arrr, ya bilge rat, thick CA be used t' attach t' fairings, and then epoxy fillets were added for strength. T' fins are then simply glued t' t' fairings (again, attached with CA then epoxy fillets). Durin' an email exchange with Sheri after me Saturn was completed, ya bilge rat, she suggested addin' small screws t' anchor t' fairings t' t' body tube if you plan t' use particularly high thrust engines. Arrr! Since mine was already finished, I didn't bother t' retrofit t' change, me bucko, but if you're plannin' t' build one as a flier, me hearties, it would be a worthwhile addition. Ya scallywag! A more robust fin attachment may also be in order. Betwixt two flights and two cross-country shipments, 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, t' full size construction drawin' is helpful), plus thar are several more pages o' templates and patterns for makin' t' various parts and pieces. As be t' case with t' Saturn 1B, 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. Begad! T' cast resin detail parts were a nice additional, although they are nay all that detailed. Begad! Again, if you want t' make it super detailed you'll need t' modify or make parts from scratch. Aye aye! Havin' already decided that this be t' be a flier, shiver me timbers, I didn't worry about addin' additional details.

Like Sheri's Little Joe II and Saturn 1B kits, me bucko, me bucko, this kit uses corrugated styrene sheets t' simulate t' external stringers. Well, blow me down! T' corrugated sheets are pre-cut t' t' appropriate width, ya bilge rat, arrr, although with a main body tube circumference o' over 25 inches, 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). Arrr! 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, matey, as with Sheri's other kits, arrr, t' tube couplers need t' be cut down t' t' appropriate diameter, ya bilge rat, although at least t' main body tube coupler is pre-cut t' length. Begad! Aye aye! (I fear cuttin' a length off that massive 8.25" body tube would have proved challenging.)

Sheri's Hot Rockets Saturn V One step that proved somewhat difficult is centerin' t' upper stage transitions. Begad! Avast, me hearties, me proud beauty! 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, matey, matey, and t' smaller tube is butt glued t' t' center o' t' bulkhead. Blimey! Ahoy! It works, ya bilge rat, but it is tricky t' get everythin' correctly positioned and centered. Ahoy! In fact t' entire 2nd-3rd stage transition was tricky. T' transition shroud is made from 0.030" styrene, matey, ya bilge rat, me hearties, and per t' original instructions, t' stringers were individually glued into place, which was tedious and difficult. Aye aye! With t' additional cast resin transition shroud pieces, shiver me timbers, it's a relatively straightforward matter t' fit and glue t' cast shroud pieces in place. However, me bucko, arrr, 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. Blimey! Begad! However, me bucko, with t' cast resin shroud pieces on top o' t' styrene transition, shiver me timbers, t' base o' t' shroud ends up significantly larger in diameter than t' top o' t' 2nd stage, makin' for a very noticeable step. Blimey! Ya scallywag! If I had it t' do over again, I'd fit t' shroud t' t' top o' t' bulkhead, ya bilge rat, then cover t' bulkhead/shroud joint with t' cast resin pieces.

Sheri's Hot Rockets Saturn V This uses t' same cast resin Apollo capsule as t' Saturn 1B kit. Ya scallywag! Begad! It's big, solid, matey, and heavy at 8 ounces (although as it turned out, ya bilge rat, nay quite heavy enough). Avast, me proud beauty! T' additional parts Sheri sent me included cast resin parts for t' escape tower. Begad! However, as with t' Saturn 1B, matey, shiver me timbers, I elected t' scratch build t' escape tower from styrene tubing. I think t' scratch built tower looks better, me hearties, and I sort o' enjoyed t' challenge.

Sheri includes ¼" launch lugs, 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. Ahoy! I strongly recommend t' addition o' t' rail buttons--just be sure t' center them betwixt t' fairings.

Finishing:
As noted previously, me bucko, me hearties, shiver me timbers, I pre-finished t' body tubes before startin' assembly. But this thin' is big. Ahoy! Really big. Aye aye! It takes a lot o' priming, sanding, and paintin' t' paint. In fact, 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! I did make things a little simpler by paintin' t' main rocket before addin' t' detail parts, me hearties, which I'd painted separately.

Maskin' for t' black roll patterns was particularly troublesome since sealin' around t' sharply defined corrugations was extremely difficult. This be particularly true for t' 2nd-3rd stage transition. Ahoy! Despite me best efforts, arrr, shiver me timbers, I got a lot o' bleed through o' t' black paint. Aye aye! A trick that I successfully used t' 'patch' t' black bleed through on white/black patterns is dry film typin' correction tape. It's delicate t' work with, arrr, but it can provide straight, arrr, matey, crisp color breaks, me bucko, shiver me timbers, me hearties, and t' color match is generally at least as good if nay better than touch-ups o' white paint with a paintbrush. Avast, me proud beauty! Aye aye! With a coat o' clear, t' fix is nearly invisible. Well, blow me down! 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, arrr, reasonably easy t' apply, me bucko, and come with good instructions on placement. Ya scallywag! Avast, me proud beauty! (Although once again, it's time consumin' t' apply them.) After maskin' off t' chrome painted areas, a coat o' clear finished everythin' off [Note: you do not want t' clear coat chrome paint--it ruins t' chrome finish. Aye aye! Been there, done that.] T' effect is striking. Blimey! It was a whole lot o' work, matey, but t' result was a really good looking, arrr, arrr, really big Saturn V model.

Sheri's Hot Rockets Saturn VSheri's Hot Rockets Saturn V

As purchased, matey, me bucko, I wonder if I would have built this kit (and if I had, ya bilge rat, matey, thar be a good chance I would have left all those stringers off t' fin-fairings and t' 2nd-3rd stage transition). Blimey! But t' post-purchase improvements make it worthwhile. Aye aye! I still have reservations regardin' t' rough surface body tubes and t' detail parts could have better detail, me bucko, me bucko, shiver me timbers, but overall it makes for a good kit. Aye aye! I'd rate it betwixt a 3 ½ and 4. Ya scallywag! Arrr! Givin' it t' benefit o' t' doubt, me bucko, 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, ya bilge rat, ya bilge rat, I ended up goin' with a single 90" X-form chute, connected with a generous length o' nylon strap. Aye aye! Blimey! 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. Avast, me proud beauty! After me less than successful experience with t' Saturn 1B harness, arrr, I decided on overkill. Ya scallywag! I drilled a hole through t' top o' t' upper stage and t' upper transition coupler, arrr, epoxied a nut inside t' coupler, and threaded a (removable) eye bolt through t' attach t' harness. Ahoy! 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. Aye aye! Sheri includes parts for a 38mm-55mm motor mount adapter, ya bilge rat, but for it's first flight with a 38mm motor, I invested in an Aero Pack 38mm-54mm adapter. Avast! Blimey! T' Aero Pack retainer and adapter are outside this review, but they are fantastic--definitely five stars!

With parachutes, ya bilge rat, chute protector, engine retainer, matey, six cans o' paint, epoxy, etc. Arrr! (but less engine), this Saturn V weighed in at a whoppin' 12 pounds. Before it was finished I'd gone into RockSim with Sheri's baseline file, and decided an I211W-S would be ideal for t' first flight. Arrr! Aye aye! Unfortunately t' weight in Sheri's RockSim file was rather optimistic, and me Saturn V was over 3 pounds heavier. Begad! Suddenly an I211 be marginal for velocity off t' rail, ya bilge rat, me hearties, but since I'd already purchased t' motor and since a 38/480 was at t' time t' longest 38mm casin' I had, I was somewhat committed.

First flight was at "Fire in t' Sky 2009", matey, matey, better known as FITS, me bucko, a major high power launch held in central Washington over Memorial Day weekend. Aye aye! Showin' up at pretty much any launch with this rocket will make you a center o' attention, and FITS be no exception. Blimey! Begad! As previously mentioned, me hearties, me bucko, t' rail buttons proved t' be an issue when t' launch rail wouldn't clear t' fin fairings. (To help hide t' black buttons I'd centered them in t' black section o' t' roll patterns.) So thar was a false start and a minor thrash while I relocated t' rail buttons. Arrr! Arrr! But finally everythin' came together. Liftoff o' a big Saturn V is spectacular, ya bilge rat, and this be no exception. Ya scallywag! Well, shiver me timbers, blow me down! There was a slight weathercock off t' rail (remember that marginal velocity off t' rail) but t' flight was spectacular. Well, blow me down! I'm nay sure about t' altitude. Begad! RockSim said 610 ft, me bucko, ya bilge rat, but it didn't look that high t' me. Avast! Perhaps me perception was fooled due t' t' large size. Begad! At any rate, ejection occurred a moment after apogee and t' chutes opened shortly thar after. Begad! There was a minor problem: t' lengthy shock cords for t' upper and lower sections become entangled so t' two sections came down together. Begad! T' main concern be that t' entangled shock cord had t' effect o' reefin' that big main parachute, shiver me timbers, so descent be a little more rapid than I would have liked, however, touchdown damage be minor. Arrr! Arrr! T' most serious bein' one fin bein' snapped off.

Sheri's Hot Rockets Saturn VSheri's Hot Rockets Saturn V

After repairs and a cross-country shipment came t' big test. Avast! Avast! This be goin' t' be me Level 2 Cert Flight at LDRS 28. Avast! Motor selection was a 54mm J275W-S (we had a discussion at FITS, matey, me hearties, me bucko, it was agreed that t' only appropriate propellant selection for a Saturn V is White Lightning). Well, blow me down! O' concern was t' rocket CG. Avast! Arrr! With t' 38mm I211W, t' CG be already close t' t' recommended aft CG limit. Begad! Avast! T' J275W was goin' t' be roughly a pound heavier so I'd gone t' work on t' Apollo capsule. Ahoy! Begad! 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. Even at LDRS, a 7.5' Saturn V will make you a center o' attention and I was surrounded by photographers as I prepared t' rocket on an 8ft rail. Ahoy! Even with t' J275, ya bilge rat, shiver me timbers, RockSim predicted that it wouldn't reach stable velocity until a few inches before it left an 8ft rail. Aye aye! It be windy when t' Saturn V was launched, me hearties, and I feared a weathercock off t' rail, but t' flight be magnificent and almost perfectly vertical with a slow (by mod-rock standards) boost. Arrr! Avast, me proud beauty! RockSim had predicted 1600 feet, and that appeared t' be about right. Arrr! Motor ejection occurred right at apogee, matey, and both chutes opened moments later t' a round o' applause. I figured I be home free. Begad! Wrong.

Sheri's Hot Rockets Saturn VSheri's Hot Rockets Saturn V

While t' lower half o' t' Saturn descended nicely, me hearties, t' upper portion caught a thermal and started drifting. At times it definitely appeared t' be goin' up. Ya scallywag! Blimey! It drifted so far I lost sight o' it before it touched down. Blimey! I knew I had t' try, arrr, but with little more than a general area where I thought it came down, I was nay optimistic that I would ever see it again. If someone had asked me t' list everythin' that might have gone wrong on me cert flight, me hearties, I would never have even considered losin' t' rocket, ya bilge rat, but suddenly that was a very real possibility.

Amazingly, I found it. It took over four hours and two separate trips out. 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. Blimey! I'd like t' say it be a properly devised search that yielded t' recovery, me bucko, arrr, but in reality it be more luck than anythin' else. Avast, me proud beauty! After landing, arrr, ya bilge rat, t' wind had dragged it through a corn field knockin' t' escape power off in t' process, me bucko, but I was able t' backtrack through t' knocked down corn and located t' missin' tower. Ahoy! 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, ya bilge rat, I generally make a point t' insert t' upper section parachute first so that as t' sections pull apart, it'll be sure t' pull out t' lower section chute. Begad! This is especially important on this big Saturn V. Well, blow me down! Even usin' a fairly generous ejection charge (over 2 grams on t' second flight), t' chute protector has yet t' leave t' body tube. Arrr! Puttin' t' upper chute on t' bottom increases t' risk that t' two sections will get tangled (as happened on t' first flight), but that is definitely preferable t' t' possibility o' t' lower section parachute failin' t' exit t' rocket. Ya scallywag! Well, blow me down! Also, arrr, ya bilge rat, 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. Well, blow me down! 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, motor retainer, arrr, paint, etc.) It's big, shiver me timbers, complex, matey, and will take a major commitment o' time t' do t' rocket justice. Begad! Ahoy! I also remain less than thrilled with t' rough surface body tubes, shiver me timbers, arrr, although t' strength and weight is more readily justified on a big high power rocket such as this. Ahoy! 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. Begad! Blimey! I don't know how often I will actually fly it. It's nay trivial t' put so much time, shiver me timbers, effort, and loot at risk, me bucko, but it's a magnificent flier and pretty much guaranteed t' draw a crowd. Ya scallywag! Blimey! But perhaps t' best endorsement I can give is, should this Saturn V meet an untimely demise, I'm pretty sure I'd build another.

Overall Rating: 4 out o' 5

comment Post a Comment