I've dug up some pictures from SA-kuva-arkisto about Soviet flamethrower tanks based on the T-26 tank. During the Winter War those tanks were called by Soviets with "KhT" (
Khimicheskiy Tank =
Chemical Tank) abbreviation but it changed to "OT"
(Ognemetniy Tank = Flame-throwing Tank) at some point. Maybe when the flamethrower tank based on the T-34; OT-34, was introduced? I'll just call them with the OT abbreviation. All these T-26 based Soviet flamethrower tanks had a crew of 2 men.
OT-26
SA-photo 8467
Captured tank armed with a flamethrower at the "General motti" of Lemetti
OT-26 was the first T-26 based mass produced flamethrower tank of the Soviet Union. It was based on the M1931 of T-26, which had 2 small machingun turrets side by side. For the flamethrower conversion left side turret was removed, flamethrower fuel and pressure tanks were added inside left side of the hull and right side turret was rearmed with a KS-24 flamethrower and a coaxial DT-machinegun.
SA-photo 8466
Captured tank armed with a flamethrower at the "General motti" of Lemetti
Lemetti 1940.02.01
OT-26's KS-24 flamethrower had a range of about 35 meters and it could shoot 70 one second bursts of flame. Flame's range is quite short due the low operating pressure, but because of that and large fuel tanks, the flamethrower operated long time without a re-filling. Soviets manufactured 552 OT-26 tanks betweed 1932 and 1935. Finns captured few of these tanks during WW2, but Finns didn't use these tanks in combat. Their weapons were removed and the tanks were used for driver training.
OT-130
SA-photo 37638
Russian tanks and bodies at Suvilahti after destoying them with an antitank gun.
Suoj