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Early Aviation
Discuss World War I and the early years of aviation thru 1934.
Boeing P 12 / F4B fuel capacity
rdt1953
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New Jersey, United States
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Posted: Saturday, June 10, 2017 - 08:34 PM UTC
Can anyone tell me the internal fuel capacity for the Boeing P 12 / F4B series ? Neither my references nor Google have been any help - thanks in advance -Richard
Kevlar06
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Washington, United States
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Posted: Sunday, June 11, 2017 - 01:58 AM UTC
Richard,
Fuel capacities differed by model, and the P12 and F4B differed based on the model type, so you need to know which version you're addressing. Here's the capacities from Aircraft in Profile:

F4B-1: 57-107 gal
F4B-2: 55-110
F4B-3: 55-110
F4B-4: 55-110

P12: 52-99
P12-B: 50-99
P12-C: 50-110
P12-E: 55-110

The reason there is such a wide variance in capacity is the semi-detachable 50 gallon fuel tank between the landing gear struts for both the P12 and F4B
VR, Russ
rdt1953
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New Jersey, United States
Joined: February 06, 2015
KitMaker: 1,098 posts
AeroScale: 900 posts
Posted: Sunday, June 11, 2017 - 02:51 AM UTC

Quoted Text

Richard,
Fuel capacities differed by model, and the P12 and F4B differed based on the model type, so you need to know which version you're addressing. Here's the capacities from Aircraft in Profile:

F4B-1: 57-107 gal
F4B-2: 55-110
F4B-3: 55-110
F4B-4: 55

P12: 52-99
P12-B: 50-99
P12-C: 50-110
P12-E: 55-110

The reason there is such a wide variance in capacity is the semi-detachable 50 gallon fuel tank between the landing gear struts for both the P12 and F4B
VR, Russ



Thanks Russ - I have lately been musing about quantum differences in aircraft of different eras and found it interesting to contemplate that while only a scant 45 years or so apart , the F-14 in full afterburner burns nearly twice as much fuel in one minute than the F4B could hold and Cary!
I'm thinking this theme might make for an interesting thread - Richard
Kevlar06
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Washington, United States
Joined: March 15, 2009
KitMaker: 3,670 posts
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Posted: Sunday, June 11, 2017 - 06:11 AM UTC
Richard,
That would be an interesting comparison! But you have to remember there are two engines in an F-14, and the thrust and wing loading are a bit different than a fabric covered wing of an F4B!! I inadvertently left the final capacity for an F4B-4 off---it should read 50-110 gallons.
VR, Russ
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