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Procedures to Start up a B17 bomber engine
#1371881 Mon Aug 03 2020 02:51 AM
Joined: Mar 2011
Posts: 1,508
J
jorb Offline OP
Shop Shark
Video "Up Close and Personal with Aluminum Overcast"
https://www.eaatogether.org/live/warbirds/6172491397001

25.40 into video, One engine holds 37 1/2 gallons of oil, Engines need to be pre-checked for hydraulic-lock.

31.00 into video, Start-up procedures begin.

53:18 into video, engine start

One engine, 1820 cubic inches, 1200 horsepower > times four

It takes two people to start an engine.

Re: Procedures to Start up a B17 bomber engine
jorb #1371910 Mon Aug 03 2020 01:01 PM
Joined: Feb 2001
Posts: 1,344
T
Shop Shark
Years ago, I actually flew in a B17 owned by the Collings Foundation. Un fortunately it was the plane that crashed a while back. I was one of the "crew" that did the pre flight and did the pre start of the engines. That prop is not easy to push, and after a couple of turns it spit oil out onto you know who. That looks like a big plane ,but it is not. I'm 5'6 and there were areas where I had to stoop down to walk. That fellow in the right hand seat is kind of big, and I would guess he had a tough time getting in that seat. To access the nose gunner position you have to more or less slide between the platform where the pilots are and a lower platform,( not a lot of space). Took a 1/2 hour flight, was an amazing experience. When you realize what the crews on these planes must have gone through on a long mission it makes you appreciate The Greatest Generation even more.
My father was in the Army Air Corp.( predecessor of The Air Force). He was a mechanic on the airplanes.


Tommy
59 apache 1/2t
261 short stepside
Re: Procedures to Start up a B17 bomber engine
jorb #1371916 Mon Aug 03 2020 02:18 PM
Joined: Sep 2001
Posts: 30,471
ace skiver
Boeing B-17 Flying Fortress

My father was a WWII B17 bomber pilot (at around 18 years old)
My uncle was a WWII B17 bombardier (in his early 20s)

Trivia: why/when were bombardiers automatically promoted to being officers?
(I asked this question a few months ago and never got a response/guess/answer).


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Procedures to Start up a B17 bomber engine
jorb #1371920 Mon Aug 03 2020 02:37 PM
Joined: Feb 2001
Posts: 1,344
T
Shop Shark
Tim,
The bombardier flew the plane on the bombing run. That's my guess.


Tommy
59 apache 1/2t
261 short stepside
Re: Procedures to Start up a B17 bomber engine
jorb #1371922 Mon Aug 03 2020 02:52 PM
Joined: Sep 2001
Posts: 30,471
ace skiver
Yes, the bombardier "controlled" (flew) the plane.

The B-17 Norden bombsight was under the control of the bombardier.
When the Norden bombsight was activated, the bombardier (the bombsight) took over control of the plane.

The pilot took his hands off the controls when the bombsight was activated.
Thus, the bombardier was then piloting/controlling the plane.

The bombardier was not an officer in WWII until after Norden bombsight came into use.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Procedures to Start up a B17 bomber engine
jorb #1372006 Tue Aug 04 2020 01:26 AM
Joined: Mar 2011
Posts: 1,508
J
jorb Offline OP
Shop Shark
In WWII my Dad was a radioman in a TBM Avenger.
They hunted for submarines.

Grumman TBF Avenger [en.wikipedia.org]
(designated TBM for aircraft manufactured by General Motors)

Re: Procedures to Start up a B17 bomber engine
jorb #1372212 Wed Aug 05 2020 08:40 PM
Joined: Dec 2003
Posts: 3,967
S
Shop Shark
On round engines like the B17 has you will see crewmen pulling the props through before start. They generally make one full turn per cylinder. This reduces/removes hydro lock. If you don't you could easily bend a con rod. Hydraulic oil does not compress!


"Sedgewick"
1949 Chevy 1/2-Ton
1989 Caprice

Re: Procedures to Start up a B17 bomber engine
jorb #1372255 Thu Aug 06 2020 02:25 AM
Joined: Oct 2005
Posts: 2,994
"Hey! I sound like Darth Vader!!
Or, motor oil?

Re: Procedures to Start up a B17 bomber engine
jorb #1372265 Thu Aug 06 2020 04:07 AM
Joined: Feb 2004
Posts: 21,047
H
Boltergeist
I got a few minutes of left seat time on Aluminum Overcast in 1997 at an airshow at Lebanon Tennessee. The family had chipped in and bought my Dad a 1-hour ride ($600.00 at the time), the first time he had been up in one since 1945. He was a pilot at the ripe old age of 20. The day before his ride, I got acquainted with one of the plane's ground crew, and ended up giving him a bunch of flathead Ford engine parts for a WW II staff car he was restoring. Later that night, I repaired the Chrysler Torqueflite transmission on a tug they needed to move the planes around for the air show the next day. That little favor bought me a free ride, and a few minutes at the controls. That flight was impressive- - - - -getting to do it with Dad along was priceless!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Procedures to Start up a B17 bomber engine
jorb #1372318 Thu Aug 06 2020 06:00 PM
Joined: Oct 2005
Posts: 2,994
"Hey! I sound like Darth Vader!!
Wow! Nice!

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