Hans Kirschstein Fokker D.VII

[Dan_San_Abbott]

RAG III:
That is the Rupp Propeller hub. It does not have bolts that pass throught the propeller hub. The front and back plates have 4 studs protruding from the plate, these match the stud holes in the propeller. This may be a Lorenzen Propeller, generally you will find a Heine Propeller with the BMW IIIa engine.
This could be a Fokker built from D.4300/18 and subsequent, or OAW built from D.4630/18 and subsequent. I think it is a Fokker fok.D.VII. The production was contemporary.
Blue skies,
Dan-San

[josef scott]

Dan-San

Do you have delivery dates for these two series of D.VIIs? Would BMW-engined Fokkers have come out concurrently, or would they have been separate?

[StephenLawson]

Originally Posted by josef scott

Dan-San

Do you have delivery dates for these two series of D.VIIs? Would BMW-engined Fokkers have come out concurrently, or would they have been separate?

josef scott; I believe Dave Watts did a thread sometime back with Dan San Abbott's input, on the BMW engined Fokker D.VII Schwerin built machines. I remember digging it out of the search engine here not long ago. Long list but well worth it.

[josef scott]

Thanks Stephen,

This must be it:
Fok. D.VIIF XXX/18 or Fok. D.VII XXX/18F?

Dave's list shows Fokker-built BMW D.VIIs from the first batch (227 - 527/18) being accepted between Apr 25 and the end of July '18. He also states that the second batch (4250 - 4449/18) were accepted between July 1 and September. Keeping in mind Kirschstein's demise on July 16th and there probably being some lag time between acceptance and when the squadrons received the planes, this would seem to put this machine somewhere in the first production batch, no?

[CWatson]

Could it be the same plane re-engined? I always thought the BMW powered D.VII flown by Beaulieu-Marconnay was the Mercedes engine plane with the streaked section of fuselage originaly flown by Berthold but upgraded.

CWatson

[RAGIII]

Originally Posted by Dan_San_Abbott

RAG III:
That is the Rupp Propeller hub. It does not have bolts that pass throught the propeller hub. The front and back plates have 4 studs protruding from the plate, these match the stud holes in the propeller. This may be a Lorenzen Propeller, generally you will find a Heine Propeller with the BMW IIIa engine.
This could be a Fokker built from D.4300/18 and subsequent, or OAW built from D.4630/18 and subsequent. I think it is a Fokker fok.D.VII. The production was contemporary.
Blue skies,
Dan-San

Thanks for the correction Dan! I knew "Spinner" wasn't correct but didn't think of the simple answer of "Hub" Just a question regarding the prop and Hub.
Are you saying that because it is a different prop than usually used with a BMW, that it may just be that that particular prop used the hub style present? If not, and this is a BMW powered aircraft from the Fokker or OAW batches you mention, then what style exhausts would be utilized? ie Downward as in early types or horizontal( rearward) as in later types?
Thanks,
RAGIII

[markojeras]

On Osprey drawing of his first? 'zebra' plane there is a single-pipe 'downward' low-position exhaust. Can this single-pipe and dual-pipe exhaust be used to determine the type of the engine or Fokker production batch?