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Luftwaffe and Axis Air Forces Please use this forum to discuss the German Luftwaffe and the Air Forces of its Allies. |
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A strange button from a FW200
good morning from France
here is a strange button that was found on a FW200 crash site. It looks quite aeronautical (made of aluminum) but I definitely can't find its function. Unless it was fitted on an item loaded as cargo ? "AP SUM" is writen on it; Any idea/suggestion is welcome; Rgds GC Last edited by gilles collaveri; 13th September 2016 at 07:14. |
#2
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Re: A strange button from a FW200
Nothing strange about that "button". It`s the top of the fuel primer pump. Common on all German planes from that time.
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#3
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Re: A strange button from a FW200
Primer pump
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#4
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Re: A strange button from a FW200
Great, thanks to both of you
GC |
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Re: A strange button from a FW200
And I have another question :
where was it located ? In the cockpit area ? Thanks GC |
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Re: A strange button from a FW200
Yes!
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Re: A strange button from a FW200
Last edited by Snautzer; 29th November 2014 at 10:59. |
#8
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Re: A strange button from a FW200
THANKS !
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#9
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Re: A strange button from a FW200
Let me share with you the information I received. It completes very well what we already received:
The AP / SUM button comes from an "Anlass-Pumpe" (engine starter pump) designed and manufactured by the company SUM (Sum Vergaser-Gesellschaft Carl Wirsum & Co. KG in Berlin) originally a supplier of carburettors, but then also of other fuel system and engine components for the German Luftwaffe. The pump was operated manually by the pilot (or the engineer). By pushing the button up and down, a specific starter fuel (mixture of a special volatile fuel 96% and 4% oil) was pumped and sprayed into the engine to ease the starting procedure. The pump was integrated into a small tank for the starte fuel; Cheers Gilles |
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