Something I've always thought interesting about big radials, such as the Pratt & Witney R-2800, is that they are hell to start, and real cranky (no pun intended) until they get warmed up. Once they are warmed up, though, they'll run forever, and often don't like to stop. It's almost like a bear hibernating, and almost gives the plane a personality.
i wont lie. the only reason i knew it was that my dad was a mechanic on them in ww2. the operators handbook that dad left me was sitting on the shelf and i grabbed it and found the info on page 65.
An auxillary motor turns the engine to bring oil into the cylinders from the sump. Bomber ground crewmen had to do that by hand. There's 18 cylinders firing. Anyone who can pick out the firing order by ear gets a prize:-). You're looking @about 1.6 million dollars worth of plane. I believe this one is owned by Colling's foundation, w/o the radar bulb or drop tank.
@neomuttley I think you're referring to when they would pull the props through, which has nothing to do with getting oil to the upper cylinders. It is to make sure oil has not pooled in the bottom cylinders, because if it has, you can bend a piston rod when the engine turns over. I know from personal experience that you have to pull the prop through on the Corsair as well as on your larger radial engine aircraft before starting.
Hey, that is the ancillary motor's job. To prime the 18 cylinders. An old crew chief told me what/why it's done. You can argue w/a retied vet who was there... Besides, how dare you question my gift of knowledge from the mountaintop! Not only did I once ride in a B17G. I also stayed in a Holiday Inn Express once!! Bow you head!!
My credential is that I worked at Courtesy Aircraft, who sold this Corsair to its previous and current owners (plus the previous owner's P-51, T-28, T-6, etc) and have assisted in starting three different Corsairs on multiple occasions, plus several dozen other raidal engined aircraft. The ancillary motor would serve to push oil to the upper cylinders, but if you have hydraulic lock in the lower cylinders, the ancillary motor can bend the piston rods just as I said.
Something I've always thought interesting about big radials, such as the Pratt & Witney R-2800, is that they are hell to start, and real cranky (no pun intended) until they get warmed up. Once they are warmed up, though, they'll run forever, and often don't like to stop. It's almost like a bear hibernating, and almost gives the plane a personality.
able34bravo 11 months ago
Actually This is a Marines F4u-5 Bu#122179 owned by Dave Folk in Michigan.
The Colling's Foundations is a Navy F4u-5 Bu#124692
two40man315 1 year ago
i wont lie. the only reason i knew it was that my dad was a mechanic on them in ww2. the operators handbook that dad left me was sitting on the shelf and i grabbed it and found the info on page 65.
69383x2 1 year ago
@69383x2 Yeah But Still Alot Of People Dont Bother Looking It Up Too Lol
Im Sure Your Dad Was A Good Man/Soldier/Mechanic
And He Probly Had Alot Of Great Stories To Tell Too
truepatriotdec7 1 year ago
1-12-5-16-9-2-13-6-17-10-3-14-7-18-11-4-15-8
69383x2 1 year ago
@69383x2 Dam Your Good Alot Of People Dont Know The Firing Order
truepatriotdec7 1 year ago
An auxillary motor turns the engine to bring oil into the cylinders from the sump. Bomber ground crewmen had to do that by hand. There's 18 cylinders firing. Anyone who can pick out the firing order by ear gets a prize:-). You're looking @about 1.6 million dollars worth of plane. I believe this one is owned by Colling's foundation, w/o the radar bulb or drop tank.
neomuttley 2 years ago
@neomuttley I think you're referring to when they would pull the props through, which has nothing to do with getting oil to the upper cylinders. It is to make sure oil has not pooled in the bottom cylinders, because if it has, you can bend a piston rod when the engine turns over. I know from personal experience that you have to pull the prop through on the Corsair as well as on your larger radial engine aircraft before starting.
able34bravo 11 months ago
@able34bravo,
Hey, that is the ancillary motor's job. To prime the 18 cylinders. An old crew chief told me what/why it's done. You can argue w/a retied vet who was there... Besides, how dare you question my gift of knowledge from the mountaintop! Not only did I once ride in a B17G. I also stayed in a Holiday Inn Express once!! Bow you head!!
neomuttley 11 months ago
@neomuttley LOL! *bows head*
My credential is that I worked at Courtesy Aircraft, who sold this Corsair to its previous and current owners (plus the previous owner's P-51, T-28, T-6, etc) and have assisted in starting three different Corsairs on multiple occasions, plus several dozen other raidal engined aircraft. The ancillary motor would serve to push oil to the upper cylinders, but if you have hydraulic lock in the lower cylinders, the ancillary motor can bend the piston rods just as I said.
able34bravo 11 months ago
@able34bravo,
Well.......OK, but I still stayed in a Holiday Inn Express once. Neeners :-P
neomuttley 11 months ago