Beyond The Sprues
Modelling => Ideas & Inspiration => Land => Topic started by: ChalkLine on October 10, 2024, 03:12:41 AM
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The K-90 prototype that was the competitor to the PT-76. It used components from the Ya-12 tractor, T-60, and T-70 light tanks. A cute little fella.
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PT-76M (Object 907)
In 1959, an attempt was made to improve the survivability and mobility of the PT-76 by the designers at STZ. A new welded hull was made with up to 80 mm of armor. It was reshaped, closer to the shape of a boat. The weight increased to 14.87 tonnes, so a new V-6M engine delivering 280 hp was added. Additional fuel tanks were added for an increased range of 400 km. Speed on land remained at 45 km/h and on water at 11.2 km/h. This vehicle was the PT-76M / Object 907 (not to be confused with the medium tank with the same index).
In August of 1959, the one and only prototype was built, but after testing, the new hull actually impaired the floating capabilities. All in all, there were no significant improvements over the standard vehicle and it was cancelled.
Here's the link to a walkaround https://www.recomonkey.com/Land-Platforms/Tanks/PT-76/PT-76M (https://www.recomonkey.com/Land-Platforms/Tanks/PT-76/PT-76M)
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PT-85 (Object 906)
Also at STZ in 1960, a project was started with the aim of improving the firepower of the PT-76B. Capital changes were made to the tank. Firstly, and most importantly, was the installation of the 85 mm D-58 rifled gun, fitted with an autoloading system and a highly effective two-plane stabilization system. In addition, an 8D-BM 300 hp diesel engine replaced the previous 240 hp, which allowed for top speeds of 75 km/h on land and 10 km/h on water, despite the 15-tonne weight. Six prototypes were built by 1963 at the now renamed Volgograd Tractor Plant. The military was not particularly interested in the project, as it was expensive and complex, despite the rather obvious advantages over the PT-76B.
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PT-76-57
A proto to 'upgun' the PT-76 with the S-60 57mm autocannon.
One day (when I get a work bench) I'll use my .stls for both the PT-76 and the S-60 to try this. That turret looks hard though.
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Makes me think of a lighter version of the 2S25 Sprut-SD:
(https://upload.wikimedia.org/wikipedia/commons/3/3b/2008_Moscow_Victory_Day_Parade_%2859-18%29.jpg)
(https://upload.wikimedia.org/wikipedia/commons/e/eb/2S25_Sprut-SD%2C_Moscow_parade_2009.JPG)