The BMW801 and the ASh82 were manufactured from the same patents sold from America (Wright, i believe) to Germany (BMW) and Russia (ASh) around 1935.
They have the same roots and only minor modifications separating them.
BMW needed a stronger radial design around 1835 as they were forced to stop the production of their V12 engine by the air ministry, the V12 patents were sold to Allison and became the V1701, Russia (Klimov) also used this BMW patents and build from them the VK107. Today on a Yak-3 or Yak-7 you can still exchange a VK107 with a Allison V1701 easily, as i.e. the original engine mounts fit perfectly for both engines.
Just as a interesting information.
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Last edited by robtek; 05-18-2012 at 08:14 AM.
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