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Old 9 November 2009, 12:19 AM   #12 (permalink)
Dave_Watts
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Join Date: Aug 2001
Location: Indy, Home of the 500 race
Posts: 776
Hi All,

Lloyd, I asked Peter about this "F" designation, and he stated he really didn't know. He was always one to not speculate. I think speculation can lead one to further enlightenment. Imrie was/is always so tight with his information that what he knew he held onto, hopefully if his D.VII book comes to pass we'll see.

Spoon, yes that is correct, 220 BMW motors delivered to Fokker and accepted into 247 aircraft. There may have been a couple more BMW motors delivered that were used in experimental aircraft; V.24, V.34, V.36, and V.38 that were not accepted. Most likely the motors were salvaged for the next project, so possibly Fokker only held one in reserve. The V.24 was fitted with a Mercedes, a Benz, and a BMW.

There were 41 D.VII's accepted with Opel BMW's from September thru November. I can give you listings if wanted. It looks like Fokker recieved 2/3rds of the motors they produced. None were double accepted. I assume they carried the "F" designation. If so it's interesting that none ever came back for reissue/acceptance in a later aircraft. Maybe they were so late to the front. I believe that's the case, I just looked at the acceptances and the latest acceptance for a BMW to be re-installed/accepted is September 6th, the earliest Opel BMW acceptance is September 2nd, and the next is September 12th, so they are outside of the "curve" to have been accepted, delivered, flown, crashed, salvaged, sent to Fokker, installed, and accepted for a second time.

There were 3 Mana motors installed into D.VII's 2 of which were accepted;

Fok.D.VII 4292/18 July 23 Mana III Nr.12
Fok.D.VII 10347/18 Nov. 29 Mana IIIa Nr.23
Fok.D.VII 10348/18 no acceptance Mana IIIa Nr.53

I don't know if the Mana was a "BMW" copy/license built motor, but think not. As well I believe they didn't carry the "F" designation. As I recall there is one of these aircraft on the floor on its side in the Fokker warehouse in a post-war photo, and the motor cowling is off and you can identify it as a Mana aircraft.

Best,
Dave W.
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