*sigh*
the more I research the Yak-3, the more I find that not a single source duplicates the exact information that any other has. Which is actually typical of information on both Japanese and Russian aircraft.
Basically, from my different sources, it looks like the early production runs of
both the Yak-9U and the Yak-3, had the VK-105PF-2 engine, due to shortages of the more powerful VK-107. And then at some point in production during 1944, they each switched over to the VK107.
How many of each were equiped each way and when? None of my sources really say. All I can find on production numbers is that approximately 4,800 Yak-3's of all variants were produced. Including the Yak-3, Yak-3/Vk107 (sometimes refferred to as Yak-3M/107), Yak-3/Vk108 (Yak-3M/108), Yak-3P, Yak-3T, Yak-3PD, Yak-3RD, and the Yak-3U. Of those, 4,800 approx. 700 were manufactured after the war.
Leonid, you know of any good sources? The Yefim Gordon and Dmitri Khazanov book (supposedly written from Russain archives, instead of Western sources) is easily the best I have, and it is even lacking in this regard.
PS: Funked, I was incorrect. The Yak-3U had the ASh-82FN, radial engine. The same engine as in the La5FN/La7.
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Vermillion
**MOL**, Men of Leisure,
Dicta Verm: "Never give the suckers an even break!" or translated "Never engage without an advantage"
[This message has been edited by Vermillion (edited 02-01-2000).]