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[Draken]

I would like to know if negative G had an effect on WW 1 planes engine's ( and on pre-WW 1 planes  , too ) , like it had on the Spitfire Mk .1 , please .

[cestode]

I've also wondered about this. This was discussed in the Rise of Flight forum awhile back. You might be interested in the thread:

https://riseofflight.com/forum/topic/22909-gravity-carburetors-just-wondering/

It starts with a lot of speculation, but later on some of them provided some citations from that era.

[Draken]

Thanks !

[Dreamk]

It depends of which kind of ww1 engines you are speaking about - the issue of negative g is probably redundant on rotary motors. On the other hand inline engines such as the Mercedes ones may have had problems but it seems that it was addressed by adding gravity tanks on the upper wings to the one in the fuselage to insure fuel supply in a variety of situations. Remains the issue of the Radial engine with Zenith carburators (Samson engines and such) - I am almost certain to have seen something on the Zenith carburators and negative g. I'll try to check in my doc.

[Draken]

Thanks !