Category Archives: w-model

W-model: Pantsir-S1 Tracked part 2.

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First part 

The painting was reasonably simple. Since there is no painting guide nor decals provided I simply chose an attractive scheme, and used a couple of leftover Modelcollect decals.

The priming was done with Vallejo’s German grey primer; I really like this product as it provides a really good surface for the paint, it can be sprayed without diluting it, and it sticks to any surface. I sprayed a Tamiya buff with some green mixed in as a base, and applied a somewhat darker green free-hand with an airbrush (I used the base coat to lighten Tamiya’s Russian Green). The demarcation lines between the colors were painted on using a very dark grey (representing black) with a brush. I also painted the tracks and the rubber rims of the roadwheels by hand.

Using a 00 brush and Vallejo’s German Black Brown I painted discreet chips and scratches on the tank. I tried not to go overboard; in this scale no chips would be visible, but they do give some visual interest to the model. I also used sponge chipping on larger surfaces.

I added a couple of ochre and brown filters to tie the colors together a bit, dark pin washes, and some dust and mud using pigments. (I did not want to go overboard with the weathering.)

Overall it has been a really nice build, and the model is a pretty unique. It certainly stands out of all the Braille-scale tanks in my collection. Apart from the minor issues I mentioned it should be an easy build for everyone who has a little experience with resin already. The only real downside of this model -as with most resin models – is the price; 52 EURs are pretty steep for a 1/72 kit. This is, unfortunately, the cost of building rare and unique vehicles.

 

W-model: Pantsir-S1 Tracked part 1.

 

 

The Pantsir (SA-22 Greyhound) air defense system is a very impressive combination of anti-aircraft missile and cannon systems, assisted by both radar and optical targeting. Technically the Pantsyr S1 is classified as a SPAAG-M (Self Propelled Anti-Aircraft Gun – Missile). It entered service in 2007, and have been exported to several countries in several different setups. This compact system can be mounted on wheeled and tracked vehicles as well as on ships, and can engage a wide range of air targets from helicopters to ballistic missiles and guided bombs (!). There are several wheeled platforms offered: the Ural5323, KamAz-6350, MZKT-7930, BAZ-6909, and MAN SX. The tracked version is essentially the development of the Tunguska AAA platform, and it is the subject of this review.

The first part of the air defence system is a dual 30mm cannon with a 4km range, and 5000 rounds per minute rate of fire. They cannot be fired when the vehicle is in travel mode, unlike the missiles. The guns can be used against ground targets, and there is armor piercing ammunition available for them for this purpose.

The target acquisition and tracking system combines several ways of detecting and tracking targets. The radar array consists a Passive Electronically Scanning Array (PESA) S-band target acquisition radar with a 360º coverage, and an X-band fire control radar (FCR). They can search and track aerial targets over 50 km away and engage them at a distance of 20 km.  Apart from the radar, it has optical and thermal trackers as well.

The missile system provides a high altitude, long range defence capability complementing the guns. It consists of 12 57E6 SAMs (surface-to-air missiles) in protective tubes. They are two-stage solid rocket-propelled missiles with a range of 20 km. The missile travels over Mach 2 and can engage targets up to an altitude of 15 km. The fire control radar needs to continuously illuminate the target, but alternatively the passive IR and optical sensors can be used to guide the missile.

The wheeled Pantsir system from Armory was recently reviewed on Armorama; it is a quite nice coincidence that I was building the tracked version for review.

The model

W-model has several really interesting and unconventional vehicles in their catalogue: mobile radars, engineering vehicles, ICBM missiles on mobile launchers, to gigantic SPGs.

The model arrived in a sturdy cardboard box, well protected in bubble wrap. It consists about a hundred resin parts, and comes with a PE fret which is essentially remains untouched during the build. (There are two parts for the missile launcher that you will use. The rest goes to the spares box.) The PE is somewhat thick; it is not easy to cut smaller parts out. You also get a small wire mesh which will be necessary for the hull. (Advice: first measure and cut out the largest bit you will need.)

The detail is pretty good, and it was very nice to work with the resin. There is almost no flash, and absolutely no bubbles or imperfections; the quality is first-class. The attachment points are well-made: the parts are very easy to remove from the casting block. I had no need for the fine saw, which, to me, is one of the worst part of working with resin. The tracks are supplied in rubber-like soft sections. I’m not sure if they are some sort of a flexible resin or if they are actually made of rubber, but they are certainly easier to work with than the “traditional” resin ones. (You don’t have to heat them before wrapping them around the running gear.)

The instructions are clear, and by large they are OK. There are some issues that they don’t mention which makes assembly a bit more difficult than it should be; more on that later. (That said it was not a difficult model to build.)

The construction went fine. The chassis had some fit issues, though. It is assembled from several flat parts (as usual with resin models), and the back panel did not actually fit on flawlessly; a little filing, cutting and fiddling was necessary to make everything click. Again, it’s expected from resin models. I did have to use some filler here and there -most prominently where the lower and the upper hull sections meet in the nose. I also used green stuff from the inside of the hull to strengthen the attachment points. (I have this recurring nightmare where the CA glue suddenly gives off the ghost, and the model falls apart; I like to use either two-part epoxy or green stuff as an additional way of gluing the model together.)

There are three air intakes on the hull which need to be covered with a metal mesh. The longest one is on the top left side of the hull, and as I said it’s best to cut it out first from the supplied wire mesh to make sure you don’t run out of it. (I did; it’s slightly shorter than the intake, which necessitated the turret being turned slightly off-center to cover it up.)

The hull’s turret ring is slightly smaller than necessary; the turret will not fit. It’s quite a simple matter to enlarge it with an X-acto knife, though.

The swing arms for the running gear have little square pegs which should fit into the corresponding square holes on the suspension. Unfortunately the holes are too small; I had to enlarge them a bit. This is a shame because the square shape of the peg would have ensured the correct angle of the arms. As they are now I suspect they sit a bit too low on my model. I had a little problem determining how to glue the double road wheels together; the holes were too small for the swing arms, and I was not sure which faces of the wheels should face each other. (See photo.) I think I managed to assemble them in the correct way; the holes for the swing arms had to be enlarged and deepened a bit, though. Once assembled, the wheels stood a bit criss-cross; it was difficult to align all the swing arms perfectly. I simply put the model in hot water (about 60C; hot but not too hot) for two minutes, then placed it between two blocks to cool down, forcing the roadwheels to line up in the correct position. You may use a hairdryer as well, but it’s riskier as you can actually melt the resin with excessive heat.

The tracks were easy to fit, but I found the sections to be a bit too short; it is not easy to depict the correct sag between return rollers when the ends of the individual sections meet up between them.

The business end of the vehicle, the radar/missile/cannon assembly was a simple build. It is important to first attach the guns to the mount, before it is glued to the rotating turret base. The instructions unfortunately do not advise on the correct sequence. If you glue the the turret base in place first, there is no room left to install the guns. There is also a lack of information on how to build the model in different configurations: you have an option to build the model in either travel mode or deployed. This is where online photos come handy; there are quite a few depicting the vehicle in both configuration. The gun can obviously be positioned at different angles, but the large tracking radar can be folded up and down, too. The missiles can also be positioned at different angles, however I don’t think it’s possible to position the inside and outside missiles differently. (You can see on reference photos that the two columns -inside and outside- can be positioned independently from each other on the actual vehicle.) The instructions are quite vague at his part: it was not clear at first where all 12 missiles should go. The instructions only show the placement of the middle ones.

The missile racks are the only assemblies that use any PE- two small parts from the extensive PE sheet. The metal is quite thick, so it is not easy to cut the parts away. The thickness comes handy once installed, as they form an important structural element of the missile launchers.

The only difficulty building the turret was the positioning of the missile tubes. They should be parallel to each other but it is not a simple matter gluing the top and bottom ones onto the rack in a way that they line up perfectly. In retrospect tiny blobs of green stuff could have been used to position them. Otherwise the build was quick and simple; and as I mentioned before you don’t use most of the PE you get with the model, which simplifies matters.

 

W Model, 1/72 1S91 SURN “Straight Flush” Radar for SA-6 Gainful

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To be honest I did not know much about this vehicle; I picked it up because it looked cool and I wanted to see how W models’ kits look like. This Lithuanian company specialises in Soviet era missile launchers, radars and other unique-looking vehicles in 1/72. I’ve known about these models for a long time; even when I was still living in the US I had my eyes on them. Back then I had very little disposable income, and the pricing took these models out of my reach; things have improved (somewhat) since then, so I took the plunge, and got one to see how they measure up as models.

The 1S91 vehicle is a part of the 2K12/SA-6 Soviet mobile surface-to-air missile system to provide medium to low level defence for ground forces. The system itself typically consists of four missile launchers carrying three missiles each, four missile transports, and the 1S91 SURN vehicle. Interestingly there are several 1/35 and 1/72 options available for the missile launcher platform, but the mobile radar has not received much love from model makers, even though if I may say so, it does look wicked.

The 1S91 (SURN, NATO designation “Straight Flush”) mobile radar is based on the GM-568 tracked chassis developed by MMZ (Mytishchinskiy Mashinostroitelniy Zavod). It is a 25 kW G/H band radar with a range of 75 km, equipped with a continuous wave illuminator, in addition to an optical sight. The vehicle has two radar stations – a target acquisition and distribution radar (1S11; the lower radar station) and a continuous wave illuminator radar (1S31; the upper radar system), in addition to an IFF interrogator and an optical channel. The two radars can turn independently.

The model comes in a typical cardboard box with the boxart printed on top. The parts are placed into zip-lock bags, and cushioned with newspaper. The system seems to work; even though the model has several large and delicate parts, nothing was broken. Some parts were detached from their pouring blocks, though.

The quality of resin is excellent, no bubbles, flash or imperfections. The radar dishes are thin, and very nicely done. On the back of some larger, flat parts you can see the ribbing left over from the 3D printing process, but none of it is present on the visible surfaces. The PE sheet is really well done; it’s just the right thickness. This is an important point, since the PE has structural functions in this model. I built kits that had PE so thick it was really difficult to cut even with pliers, and other sets had PE that was so thin it crumpled when you touched it. All in all, the detail is really good; W Models seems to have a very high standard of production.

Unfortunately the parts are not numbered on the casting block, but despite the relatively large number of parts, finding the right one was not much of an issue during the building stage. The instructions are (mostly) clear and computer generated. Overall they do help a lot during the building process, but there were some issues which were difficult to sort out, and I could only do so with the help of reference photos found online. Henk’s webpage has photos of the model and CAD drawings; they certainly helped a lot as well. It would be useful to show the different sub-assemblies once finished from several angles; the attachment of the optical sight to the side of the 1S31 radar was especially problematic. (The instruction has an arrow pointing to the middle section of the structure that holds the radar dish; the part should go to the bottom, however, where there is a small notch already.)

The assembly is relatively straightforward. The first steps detail the assembly of the hull. The lower hull needs to be assembled from flat parts. The fit is overall OK, but there were gaps between certain panels; this is why I prefer the “tub” style resin hulls. In this case I needed to use filler to fill these gaps. To make sure the attachment points of the hull sections are as sturdy as possible once the CA glue set I used some green stuff on the joints from within. It also served as filler for the larger gap on the back of the hull.

The holes for the swing arms for the road wheels need to be enlarged so that the locating pins fit; it’s also a bit unfortunate that there’s nothing to help setting the arms at the correct angle.

The tracks are the typical straight resin pieces. You need to put them in warm (~50C) water to soften them, and then gently wrap them around the drive wheels/idlers, and form the appropriate sag where necessary.

The drive wheels have very well defined teeth, but the fit to the tracks is a bit problematic; the drive wheels were a tiny bit wider than the distance between the corresponding parallel holes on the track. It’s possible with a very careful application of force to push the teeth into the holes in the track, but one has to be cautious not to break them off.

The second big assembly is the radar itself. As mentioned the two radars can rotate independently from each other, so it does not really matter how you orient them. Regardless, it is a good idea to actually decide before starting. The orientation of the radar dish will be determined by the first steps (step 7), so make sure you understand what part goes where, and how it will look once finished (mine is quite random, since I did not realize this in time). Another thing to mention: the service plank next to the top radar dish has a collapsible handrail. The instructions show the vehicle with the dishes in forward position, handrail erected. If the top dish is in use, the handrail would be in its way and is folded down. The instructions do not mention this possibility, and if you- like me- you build the model with the dish off-center, it will be an issue. (Some illustrations bellow of what I’m talking about: on the photos you can see the handrails folded; on the model and CAD drawing you can see how it gets in the way. Obviously further down you will see my model as well.)

http://www.alamy.com/stock-photo-1s91-surn-vehicle-nato-designation-straight-flush-with-the-radar-for-71629833.html

The travel configuration of the vehicle is pretty interesting, too; it’s a shame it’s not an option with the kit.

2K12 Kub air defense system - 1S91 SURN

(It shows how the complex metal guard system on the front of the hull functions to protect the radars during transit.)

Once the radar assembly is complete, some further details are added to the hull, such as the already mentioned guards, and we’re done. (The guard system seems to be consisting of two independent curved rails; one fixed, and one movable. They should be touching in the folded position (when the radars are erected and are in use); yet part 34 is shorter, and does not reach the others. Since it’s literally just a curved piece of resin rod, it should be easy to fashion a longer replacement piece. I kept this parts for the purpose of this review.

The model is actually quite complex, but not immeasurably so. It can be built with a reasonable amount of experience; even the PE handles well.

Painting

Vehicles like this do not get banged around as much as tanks and other armored fighting vehicles, and if they do get to the wrong end of the enemy’s guns, they usually end up a mangled, smoking wreck, so excessive chipping and other weathering was not really an option. They also tend to avoid heavy mud, and are kept in pristine condition by their crew. Since I wanted to depict a non-derelict vehicle, I kept the model reasonably clean.

I decided to put everything together before painting; that meant the tracks as well. I kept the radar installation detached for ease of handling but everything else was fixed.

I washed the model in warm, soapy water, and let it dry for a couple of days.

The model received a German Grey primer coat (Vallejo) to provide a good, stable base for the subsequent paint coats, and also to pre-shade the model. There is an argument for not using primer: modern paints adhere to almost any surface. With resin I found that it’s still a good idea to prime first.

Once the paint cured (about 24 hours) I misted a couple of coats of Tamiya OD dark green onto the model, following with subsequently lighter shades (lightened with tan and yellow). The lighter shades were concentrated on the areas which would be exposed to more light if the vehicle was standing outdoors – the top of the hull, the lower interior curve and the top of the radar dishes, etc. I decided to highlight a couple of protruding details: hatches, top of storage boxes, etc, with a slightly lighter green. (I used tan to lighten the base color; if you use white it makes the resulting color look faded. Sometimes it is the look you’re going for, but in this case I wanted a more natural variation.)

The lower part of the hull was treated somewhat differently. The roadwheels got a small spray of green each, and I went over the rubber rims with dark grey using a very fine brush. I also corrected the oversrpay on the tracks using the primer. The color was pretty good for the tracks; I used some rust wash to give them some variance, and a silver pencil to simulate the worn down, shiny parts.

I diluted earth colored pigments in white spirit, and after leaving the mixture on the roadwheels, and the bottom of the hull for half an hour, I wiped the excess away with a damp brush. I repeated this step with a couple of earth colors going from lighter to dark.

True Earth has a couple of filters in their product lines; I bought them a while ago, but had no luck with them so far. (I did work out you needed a very flat surface to apply it; the surface tension tends to pull the filter into droplets.) I sprayed some dark aging and light aging filters on some selected areas without diluting the product: around the turret, on the lower part of the turret, on the bottom of the tank; the effect is not as smooth as I wished it to be, but it does produce an interesting discoloration here and there.

I used some yellow, light brown and yellow filters on the model in several coats; the lighter ones were focused on the top parts, the darker on the bottom. As further filter I used Tamiya’s transparent yellow sprayed from above; it provides an interesting brighter highlight. Once the model dried, I gave it a coat of semi-gloss varnish, and applied pin washes to make the details stand out. (I usually don’t use black; dark brown is a good color for a wash.) This was a good time to add some discreet streaks using oil paints as well.

I printed out some Hungarian signs a while ago on decal paper; I’ve used these to give the vehicle some sort of identity.

A matte varnish was used to seal everything, and give the final sheen of the model, and I applied a couple of layers of dust using Tamiya’s weathering sets (the makeup-sets), and different dust colored pigments straight. I used the pigments dry, and rubbed them on using a rubber brush -something I saw on Armorama. Since I only wanted a moderately dusty vehicle whatever is left on it would be sufficient.

That’s pretty much it. I have to say the model is quite impressive, both in quality and in appearance. If you don’t mind the scale and the price, it is highly recommended.

 

I would like to hear your thoughts- please let me know what you think in the comment section.