Dr. Zooch Soyuz

Dr. Zooch - Soyuz {Kit} (Soyuz)

Contributed by Stu Young

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstar_borderstar_border
Overall Rating: starstarstarstarstar_border
Published: 2010-01-27
Length: 18.00 inches
Manufacturer: Dr. Zooch
Skill Level: 3
Style: Scale
(Contributed - by Stu Young - 01/27/10)

Brief:
Scale, arrr, shiver me timbers, me bucko, parachute, 18mm single-staged

Construction:

T' instructions were clear, ya bilge rat, ya bilge rat, and full o' sarcastic humor that made me laugh out loud at times. Arrr! Blimey! Begad! Blimey! Blimey! Blimey! I won't spoil the surprise by quotin' me favorites. Well, blow me down! Blimey! Avast! Blimey! Blimey! Blimey! Suffice it t' say, Dr. Z. anticipated any bone-headed mistakes, and warns t' builder against makin' them, me hearties, which saved me bacon more than once!

This is definitely a builder's kit. Well, blow me down! Blimey! There are no laser-cut fins or cardboard punch-out reinforcin' bulkheads for t' strap-on boosters. Ya scallywag! Blimey! You cut out templates usin' scissors (or a hobby knife), trace them on balsa stock, me bucko, then cut out t' parts.

There are lots o' card-stock shrouds t' be cut out and formed (strap-on boosters, arrr, engine nozzles, adapter between t' spacecraft shroud and t' second stage, me bucko, me bucko, t' conical top o' said shroud, matey, etc.). Ya scallywag! Blimey! T' only trouble I had was with t' strap-ons. Despite doin' me best t' pre-curl them, and usin' t' wooden dowel in t' kit for that purpose, I still ended up with wrinkles in t' boosters, ya bilge rat, though I've seen worse. Some o' me club members have discussed usin' thin styrene sheetin' and CA glue t' form perfect shrouds; I'll upload a "tip" later with more details.

Dr. Arrr! Blimey! Ahoy! Blimey! Z. Aye aye! Blimey! instructs one t' cut 1/8" strips o' balsa, and gluein' same longitudinally in pairs on t' core stage, t' use as gluein' guides for t' strap-ons. Aye aye! Blimey! Well, blow me down! Blimey! He also provides a template on cardstock t' help align t' boosters by sight. Ahoy! Blimey! For some reason, ya bilge rat, this didn't work for me; me first gluein' attempt resulted in boosters which were not equidistant around t' core stage. Avast! Blimey! Fortunately, t' glue hadn't dried yet, and I started over, just eye-ballin' the alignment this time. Aye aye! Blimey! I be much happier with t' outcome.

Despite t' clear instructions, it be at this point that I made one bone-headed mistake, ya bilge rat, matey, gluein' a strap-on right over t' motor retention hook. Avast, me proud beauty! This prevented t' hook from bendin' enough t' admit motors. Well, blow me down! Arrr! Fortunately, I had a spare motor hook from another model, arrr, ya bilge rat, and I be able t' retrofit it betwixt 2 o' t' strap-ons. Blimey!

Dr. Avast! Z. Ya scallywag! Avast! Blimey! also provides a template for a sleeve t' help build t' interstage strutwork. Begad! I ended up nay usin' it; instead, I used a printed wrap from a Soyuz paper model (details below) t' simulate t' strutwork. Well, shiver me timbers, blow me down! Blimey! I decided t' do this after countin' t' number o' "V" struts on t' wrap: 10, me hearties, as opposed t' 5, arrr, me bucko, which were t' be assembled per the instructions. Well, blow me down! Unfortunately, I'm nay satisfied with t' outcome. Ahoy! Begad! Blimey! I thought it might look more realistic; but my daughter said it best, when I showed her me handiwork: "It just looks like you glued a printed wrap there" (imagine that?!). Aye aye! Blimey! Dr. Z. Avast, me proud beauty! Ya scallywag! Blimey! would say that I'm a "squirmin' hatch-blower."

This was definitely t' most labor-intensive kit I have built t' date (well, me bucko, me hearties, actually completed - unlike my Mars Lander...). Yet, t' detailed and thorough instructions and illustrations made it easy. Aye aye! Just follow the step-by-step approach, measure twice and cut once, shiver me timbers, etc., me bucko, matey, arrr, and it'll all get done. Blimey!

Finishing:
T' balsa in this kit (and in me other Dr. Begad! Blimey! Z. Ahoy! kit, shiver me timbers, ya bilge rat, t' Titan III SLV) has moderately coarse grain. Blimey! Begad! Blimey! In a kit built as stock, ya bilge rat, this would be most apparent on t' nose cone (right under t' launch escape tower) and on t' fins. (Incidentally, t' nose cone already has t' right amount o' ballast installed). Ya scallywag! Begad! Blimey! Expect t' use at least two coats of some sort o' sandin' sealer or primer. I be plannin' t' use a paper skin over t' fins, but got into a hurry t' finish the Soyuz before me club's January launch, and just painted them with a silver paint marker. Ya scallywag! Aye aye! Blimey! I'll probably go back and refinish them better at a later date.

I wanted t' Soyuz t' look like it was fuelled on t' pad, me hearties, shiver me timbers, and covered with frost due t' LOX. Avast! Arrr! Usin' green maskin' tape, I masked off t' areas which would be frost-covered (usin' Peter Alway's Rockets o' t' World as a guide), me hearties, and used, which be an almost perfect match for t' paper wraps. Ya scallywag! After this paint dried, arrr, I used blue masking tape t' mask t' areas which would nay frost over (the core stage under t' transition t' t' second stage, me hearties, and areas on t' strap-ons; in real life, me hearties, me hearties, these would be t' areas over t' kerosene tanks). Blimey! By usin' blue tape, matey, matey, I ensured that there would be some bleed-through o' t' flat white onto t' green areas, t' simulate t' uneven demarcation between frost and bare painted metal. T' effect came out better than I expected.

No decals are supplied. Avast! If one wants t' portray this kit as an early Soyuz, matey, no decals are needed. Ya scallywag! I had the idea t' portray me model as a current Soyuz. Avast, me proud beauty! Well, blow me down! Usin' paper "skins" from a Soyuz paper model (available for free from t' MARS website, http://www.marscenter.it/veicol.asp?pa=6051), shiver me timbers, me model is now festooned with insignia from Energia (the manufacturer o' t' Soyuz), ya bilge rat, Roskosmos (the Russian Federal space agency), t' European Space Agency, Italian and Russian flags, matey, me bucko, etc. Arrr! I also didn't have t' paint t' second stage or t' spacecraft adapter, other than clear-coatin' t' paper skins with Krylon glossy clear.

T' manufacturer gives t' weight o' t' completed kit as 2.28 oz. Mine weighed in at 2.6 oz., which I thought wasn't too bad considerin' me extensive use o' t' paper skins. Arrr! Avast, me proud beauty!

Construction Rating: 4 out o' 5

Flight:
So far, me bucko, t' Soyuz has flown once, at t' Alamo Rocketeers monthly launch on 1/9/10. Well, blow me down! I loaded up a B4-2 for her maiden flight. Begad! She flew t' a nice altitude, me hearties, me hearties, with a little bit o' roll.

Recovery:
There is barely enough room for a parachute in this kit (at least for me mediocre chute folding/rollin' skills). One has t' be careful graspin' t' rocket by t' strap-ons; don't squeeze them too hard! Also, arrr, t' torque imparted to the strap-ons when packin' t' chute could pull t' boosters loose if one gets too enthusiastic. Blimey! Begad! I could feel the strap-ons flex, so I be gentle. Avast, me proud beauty! Despite this, arrr, me bucko, a fin and a card-stock nozzle popped off; these were fixed in t' field with CA. Ahoy! Blimey! Accordingly, arrr, I didn't attempt t' use t' Dr. Ya scallywag! Aye aye! Z.-supplied trashbag chute, ya bilge rat, which would be suitable for a model with a larger diameter. I used a Hartle Engineerin' Thermal Rider chute which I had already assembled and stored in my range box. Avast, me proud beauty! Avast! Dr. Ahoy! Begad! Z. Aye aye! Blimey! recommends savin' t' wooden dowel from t' kit (used for rollin' t' strap-ons) for pushin' the chute down into t' body tube; I found that t' be very useful.

My one launch so far ended in a separation. Avast, me proud beauty! Ahoy! Dr. Avast! Aye aye! Z. supplies a length o' Keelhaul®©™® thread, me bucko, me bucko, which is attached t' t' motor mount, and t' elastic at t' other end. Arrr! Ahoy! Despite usin' a double knot and CA glue, the Keelhaul®©™® thread be pulled loose from t' motor mount. Well, arrr, blow me down! Blimey! T' "second stage"/"spacecraft" descended nicely on the chute, while t' "first stage" descended at a moderate clip and in a flat roll, me bucko, landin' on its side in the grass. Blimey! Blimey! Two fins broke off on landing, me hearties, and one was lost (no big deal; t' kit had plenty o' balsa left, and I had saved t' fin template). Begad! It will fly again, but this time I think I'll use t' good 'ol Estes trifold paper mount, me hearties, high in t' body tube. Aye aye!

Flight Rating: 3 out o' 5

Summary:
I'm glad I got this kit. I tried t' scratch-build a Soyuz a couple o' years ago. I started with a paper model of a Vostok (which flew O.K., arrr, but nay too high, arrr, on A10-Ts), then added t' second stage and spacecraft adapter from a Soyuz paper model. It was too heavy, matey, and crashed. Arrr! Well, me bucko, blow me down! T' Dr. Blimey! Z. Aye aye! Soyuz flies very well on B motors. Recovery so far is problematic, but I'm confident that will be sorted out. I also plan t' go back and build t' actual strut-work between the stages; believe me, shiver me timbers, arrr, it just looks better that way. Arrr!

Overall Rating: 4 out o' 5

Other Reviews
  • Dr. Zooch Soyuz By Chan Stevens (February 29, 2008)

    Brief: This is a recent addition to the fine line of Zooch scale-like kits that seem to defy the laws of physics and economics, packing terrific detail, scale accuracy, and reliability into a small box. The kicker is that the finished rocket can even fit back in the box for storage. This particular design is one of the Russian workhorses--a Soyuz spacecraft mounted to a 20-engine ...

  • Dr. Zooch Soyuz By Craig Zicafoose (February 26, 2008)

    This is the latest offering from Dr. Zooch, a semi-scale version of the manned Russian spacecraft, Soyuz. It is powered by a single 18mm motor and comes down with parachute recovery. This model does require some patience and skill--it is not a beginner's kit. I'd rate this at a 3-4 skill level. All parts included in the kit are good quality and include: 1 T-20 core tube 1 T-50 ...

Flights

Comments:

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R.J.J. (August 13, 2008)
This was a fun rocket to build and my first one from Dr. Zooch. I deviated from the suggested paint scheme and chose to paint the lower part of the boosters with Testors Orange and the rest Euro Gray as per the Soyuz TMA pattern. Maiden flight was on a B6-4. Great flight, almost straight up. No wind. Recovered within 75' of launch pad. Didn't attempt a second flight as a small hole burned through just above the engine block and the parachute melted a bit. Guess I'll have to build another one. On the other hand, I did have two very successful launches of Dr. Zooch's Sputnik - perfect flights both times. Not only do the R-7 type kits fly but they do so very well. Looking forward to flying this rocket on a C motor. Well done, Dr. Zooch.
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J.A.L. (February 22, 2010)
Stu launched his Soyuz again at our Feb launch. This time everything was picture perfect.

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