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KV-1/KV-1S Hybrid
MrNeil
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New Jersey, United States
Joined: November 01, 2005
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Posted: Tuesday, July 09, 2019 - 06:57 AM UTC
Now it was time to turn my attention to the suspension. Both kits provide the late style suspension swing arms, which I added to the hull sides along with the bump stops, sprocket and idler mounts.

Trumpeter’s instructions are vague about the orientation of the caps on the torsion bar ends of the swing arms. In my previous research, I’d always found them to be oriented as shown in the photo below:





However, the Parfino vehicle has them in all kinds of different orientations, and at least one photo of a fall 1942 production KV-1S shows the same. It’s possible that they were using 3-bolt caps with older 6-bolt fittings underneath, which would explain the greater variation in orientations.



Make sure to use the flat-faced end caps from the KV-1S kit (parts WA16). The Parfino vehicle has this type and it’s plausible that ‘Powerful’ did too.

Take care NOT to add the mud scrapers (parts A5 and A6) to the hull sides since you can’t get the sprockets on with these in place.

MrNeil
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Posted: Friday, July 05, 2019 - 01:26 AM UTC
I completed the rear hull by adding the mesh screen under the overhang, along with the exhaust deflector plate and tail light. Trumpeter gives you an etched brass part for the deflector plate but I chose to use the styrene part which is simpler and perfectly acceptable once the supports are thinned down a little.

The tail light on the Parfino vehicle has steel rods welded over it to act as a guard - five vertical and five horizontal. Even with the thinnest wire I had, five each way pretty much covered the opening, so I exercised a little modeler's license and used two in each direction, which was a pattern also seen on KV-1s.

The Parfino vehicle has the rear towing eyes welded to the hull, and they lack the little circular weld marks that cover the bolt holes on earlier variants. I sanded the marks away from the kit parts.

I also realized at this point that I’d used the narrower rear towing eyes from the Model 1942 kit, whereas I should have used the wider ones from the KV-1S kit (parts WA9). I replaced them.

MrNeil
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New Jersey, United States
Joined: November 01, 2005
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Posted: Monday, July 01, 2019 - 10:06 AM UTC
Time to get back into this build after a few days off for some surgery.

Most KV-1s exhibit prominent weld beads along the joints between the upper hull sides and the roof. These are missing in the Trumpeter kits, so I added them from 20-thou styrene rod, softened and textured as above. Note that the weld beads end at the joint between the forward hull top and the engine deck, since the engine deck was bolted, not welded in place.



The Trumpeter kits provide molded mesh for the radiator intake screens. My go-to replacement is Eduard’s TP088 set which, despite being labeled ‘early’ by the manufacturer, provides the correct pattern screens with the flattened forward end. However, Kurt Laughlin’s work with hollowing out the kit parts got me thinking, and I realized that I’ve never actually used the kit parts in a KV build. I therefore decided to use them as-is and see how they’d turn out with just careful painting. We’ll see how that turns out

The engine access hatch on most KVs at this time was the domed variant with the built-in inspection port for the cooling system overflow valve. This part is provided in the Model 1942 kit as part F23, though you need to open up the hole for the inspection port (part A18).

The lifting eye on the right-hand side of the hatch needs drilling out. I used a #75 drill bit.

On the retaining cable/hook that secures the hatch to the turret side grab handle when open, the looped ends of the cable are molded solid. I carefully hollowed them out with the tip of a #11 blade.



I used the kit exhausts, though I thinned out the edges a little with a sharp knife.

The photo of ‘Powerful’ does not show the engine deck or transmission cover plate, and the Parfino vehicle has both these plates replaced with sheet metal covers. I therefore made an assumption and used the transmission access hatches from the Model 1942 kit, reasoning that these would likely have been on the KV-1 Model 1942 hulls as delivered.



Moving on to the rear of the hull, I noticed that the rear overhang on the Parfino vehicle is attached between the hull sides, rather than protruding out beyond them as depicted in the Trumpeter kit. This is remarkable in that it would have required a shorter transmission compartment roof plate and other modifications such as a shorter screen beneath the overhang.



Trumpeter’s depiction is accurate since numerous photos of Model 1942 hulls show the overhang as they have engineered it in the kit. It’s possible of course, that the Parfino vehicle’s upper rear plate was replaced during ‘restoration’ of the vehicle. I decided to leave the kit parts as-is.
rfbaer
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Texas, United States
Joined: June 12, 2007
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Posted: Tuesday, June 25, 2019 - 12:16 AM UTC
I've dug all the extra parts I have, plus one completed kit I never really got a thrill out of, so I'll be following along like.... well, insert your own phrase here.
KVs are nifty too, big square things that were almost as much a Mr Potatohead as Shermans, lots of possibilities.
UniCue
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Finland
Joined: November 07, 2018
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Posted: Monday, June 24, 2019 - 06:27 PM UTC
Greetings from Finland!
This project is very interesting and I'll be following it closely as my long term plan is to build the whole KV family in 1/35 scale. Thanks Neil for sharing it to us!
KurtLaughlin
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Posted: Monday, June 24, 2019 - 03:16 PM UTC

Quoted Text

Your hollowed out plastic frames with the Aber mesh came out pretty nice!



Yes they did, and it only took me about an hour to grind out screens, dress the edges with files, and make thelongitudinal supports. The Aber screens were a perfect fit for the kit frames..

KL
MrNeil
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New Jersey, United States
Joined: November 01, 2005
KitMaker: 228 posts
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Posted: Monday, June 24, 2019 - 01:39 PM UTC
The applique armor on the Parfino vehicle has prominent weld beads down each side. I added these from 20-thou styrene rod, softened with liquid cement and textured with the back of my putty knife.

The rain guard over the driver’s visor is visible in the photo of ‘Powerful’ and like the Parfino vehicle, it has extended sides all the way down to the glacis plate, similar to the design seen on KV-8 flamethrower tanks. At first I tried making the guard from thin styrene strip but after several failed attempts where the strip split as I tried to bend the corners, I used 10-thou brass strip instead, which bent far more easily.

I also added the hull MG shield from the Model 1942 kit and the power conduit for the headlamp and horn from 20-thou rod, with the forward end drilled out so I could add cabling later. The mounting brackets for the headlamp and horn came from Eduard’s TP088 update set.





The grey around the edges of the brass strip is Mr Surfacer 1000 which I brushed on to show up any gaps or rough spots from the superglue that I used to attach the brass.

Continuing to work backwards onto the hull top, I added the driver’s periscopes using parts WH4 from the KV-1S kit, the hull hatch using part F9 from the Model 1942 kit, and the little rectangular bump stop forward of the hatch from a small piece of 10-thou styrene, since that component is missing from the KV-1S hull top.

The Parfino vehicle has a chevron-shaped segment of armor on the hull top to protect the turret ring, which is supplied in the Model 1942 kit. Photos of the Parfino vehicle show the armor to be rather shallow compared to the part in the kit and, suspicious, I did a quick test fit of the turret. Sure enough, the tall armor prevented the turret from fully rotating.



I started out trying to cut the kit part down but I wound up replacing it with 40-thou styrene strip cut to size using the kit part as a template. I added weld beads from 10-thou rod softened and textured as mentioned above, and scored the top of the armor with a hobby knife to represent torch cuts.



The Parfino vehicle’s engine deck is missing, replaced with heavy sheet metal, but most Model 1942 hulls had applique armor on the forward corners of the engine deck, and the Trumpeter kit provides this armor molded in-situ. Like the forward turret ring armor however, it’s too tall for the KV-1S turret to rotate so I cut it down to match the forward armor.

lancew
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Posted: Monday, June 24, 2019 - 11:07 AM UTC
I was wondering the same the same thing. But just like with researching Shermans it seems you can never say never when it comes to KV's
MrNeil
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Joined: November 01, 2005
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Posted: Monday, June 24, 2019 - 01:28 AM UTC

Quoted Text

Following this with interest it's always nice to find one these oddball KV subjects.

One question re the coaming around the driver's visor. I know this was a feature of KV-8's and was wondering how common this was on normal KV's like mthis one



Lance, I've never seen the extended coaming on any vehicles except KV-8s and this batch of hybrids. That leads me to wonder if those 'spare' hulls were originally intended for KV-8 production.

Of course, I might simply have not seen the right photos
lancew
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Posted: Sunday, June 23, 2019 - 08:45 AM UTC
Following this with interest it's always nice to find one these oddball KV subjects.

One question re the coaming around the driver's visor. I know this was a feature of KV-8's and was wondering how common this was on normal KV's like mthis one
CMOT
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ARMORAMA
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England - South West, United Kingdom
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Posted: Sunday, June 23, 2019 - 04:12 AM UTC
It is good to see the KV master building on the site.
panamadan
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Posted: Sunday, June 23, 2019 - 02:45 AM UTC
Fun to watch Neil!
Dan
rfbaer
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Posted: Sunday, June 23, 2019 - 02:22 AM UTC
What an ideal way to use up some KV spares I have myself, plus an excellent how-to.
MrNeil
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Posted: Saturday, June 22, 2019 - 01:14 AM UTC
Glad you found it useful, Angel
ayovtshev
#490
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Posted: Friday, June 21, 2019 - 04:58 PM UTC
Following your build,Mr.Neil!

I just finished building a 1942 KV-1(#00358) and the instructions given in your wonderfull website came very handy!

MrNeil
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Posted: Friday, June 21, 2019 - 01:32 PM UTC
Your hollowed out plastic frames with the Aber mesh came out pretty nice!
KurtLaughlin
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Posted: Friday, June 21, 2019 - 01:16 PM UTC

Quoted Text

Kurt, there are numerous aftermarket sets out there for the screens, but I found Aber’s are way over-engineered, Lion Roar’s are incorrectly shaped, and other manufacturers’ screens usually come as part of larger general update sets. Eduard’s TP088 offers a good balance of accuracy and detail with ease of assembly, and is relatively cheap since it only includes the screens and a couple minor detail parts.



Yeah, that's why I went with reworking the plastic. It probably took less time than mucking with the PE frames. I liked their air exhaust screens too. Their air deflector was made backwards, however. I was looking for the Eduard set at AMPS but I think I only saw one KV fender set at the whole show.

KL
MrNeil
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Posted: Friday, June 21, 2019 - 01:00 PM UTC
Kurt, there are numerous aftermarket sets out there for the screens, but I found Aber’s are way over-engineered, Lion Roar’s are incorrectly shaped, and other manufacturers’ screens usually come as part of larger general update sets. Eduard’s TP088 offers a good balance of accuracy and detail with ease of assembly, and is relatively cheap since it only includes the screens and a couple minor detail parts.
KurtLaughlin
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Posted: Friday, June 21, 2019 - 12:53 PM UTC
I like the Aber screens but I haven't tried anything else. The frames are too much trouble for me so I hollowed out the kit screens and used the PE parts on the plastic frames.





KL
Removed by original poster on 06/22/19 - 00:52:08 (GMT).
MrNeil
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Posted: Friday, June 21, 2019 - 11:40 AM UTC
Now that the main structure of the hull was together, I began adding details.

By 1942, all KV-1 hulls were fitted with applique armor on the lower front hull plate. This was temporarily omitted when the KV-1S was introduced but returned by early 1943. The KV-1 Model 1942 hull on the Parfino vehicle has the armor fitted, so it’s reasonable to assume that ‘Powerful’ would have had it too. I took the part (F3) from the Model 1942 kit and added it along with the circular front towing eyes (parts WA17) from the KV-1S kit, to match the Parfino vehicle.





The armor plate has a weld bead molded onto each end, but not to the top and bottom. The same goes for the nose cap. I added the missing weld beads from 10-thou styrene rod, softened with liquid cement and textured with a knife blade.



In October 1942, Factory No.200 was building KV hulls with applique armor on the superstructure front plate. This applique armor was taller than the hull itself, unlike the armor on UZTM hulls which ended at the roof.

The Model 1942 kit provides an applique armor plate but it’s the UZTM pattern and it’s designed for the KV-1 hull with a single driver’s periscope, whereas the KV-1S hull has two periscopes. I made a replacement from styrene sheet to match photos of the Parfino vehicle, using part D18 from the Model 1942 kit as a template to position the cutouts for the MG mount and driver’s visor.



bill_c
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MODEL SHIPWRIGHTS
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Posted: Friday, June 21, 2019 - 03:25 AM UTC

Quoted Text

For the Ehkranami, the same screens set is good but you'd need an F-32 barrel rather than a ZIS-5 barrel. The Aber barrel 35 L43 is the right one, and there are a bunch of alternatives listed at 4bogreen.com


Thanks, Neil, you are the man for KVs....
pgb3476
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Posted: Thursday, June 20, 2019 - 11:32 AM UTC
I'll be watching for sure. I did not know it was a hybrid as I have seen a number of color profiles showing this specific tank as a straight KV-1S, I even built two in the past as the reflected in those profiles.

MrNeil
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Posted: Thursday, June 20, 2019 - 10:27 AM UTC
Very likely, but there are various sellers on eBay who carry them. I picked up an Eduard screens set (TP088), an Aber barrel (35 L49) and a set of Masterclub 608mm tracks (MTL35030) from sellers in Poland.

For the Ehkranami, the same screens set is good but you'd need an F-32 barrel rather than a ZIS-5 barrel. The Aber barrel 35 L43 is the right one, and there are a bunch of alternatives listed at 4bogreen.com
bill_c
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MODEL SHIPWRIGHTS
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Posted: Thursday, June 20, 2019 - 10:18 AM UTC

Quoted Text

Bill, I have the aftermarket all lined up


If you don't know what's needed for the build, I can't imagine who would know better, haha!

I did a little hunt today around an Ekranami, and the AM stuff is thin on places like Sprue Bros. Guess the kits are too old to keep that stuff in stock?