"CAF Dixie Wing Corsair "530" first crank after an 8 1/2 month restoration firewall forward. This video was made to show the owners the entire first crank. If you want to see the actual first crank go to about 8:20. It's slow to start but worth the wait."
https://www.youtube.com/watch?v=KGBXShuUZ-8
EDIT: I put the link in![:)]
Corsair first crank
Moderators: wdolson, MOD_War-in-the-Pacific-Admirals-Edition
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MakeeLearn
- Posts: 4274
- Joined: Sun Sep 11, 2016 1:01 pm
RE: Corsair first crank
Were the propeller tips painted yellow for a reason?
A RPM/Power Band visual gauge?
RE: Corsair first crank
Hi MakeeLearn,
I PM'd you about a pic you posted a while back!
thanks
Duane
I PM'd you about a pic you posted a while back!
thanks
Duane
"The Navy has a moth-eaten tradition that the captain who loses his ship is disgraced. What do they have all those ships for, if not to hurl them at the enemy?" --Douglas MacArthur
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MakeeLearn
- Posts: 4274
- Joined: Sun Sep 11, 2016 1:01 pm
RE: Corsair first crank
Got it. i presume it's this one. That is a beautiful sight.
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RE: Corsair first crank
ORIGINAL: MakeeLearn
Were the propeller tips painted yellow for a reason?
A RPM/Power Band visual gauge?
Gives a visual aid as to where the propeller is, so you don't walk into it.
"After eight years as President I have only two regrets: that I have not shot Henry Clay or hanged John C. Calhoun."--1837
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MakeeLearn
- Posts: 4274
- Joined: Sun Sep 11, 2016 1:01 pm
RE: Corsair first crank
ORIGINAL: Bearcat2
ORIGINAL: MakeeLearn
Were the propeller tips painted yellow for a reason?
A RPM/Power Band visual gauge?
Gives a visual aid as to where the propeller is, so you don't walk into it.
Do you know if it was florescent?
RE: Corsair first crank
That was fun. I brought my wife over to my desk to watch. It's her favorite plane.
RE: Corsair first crank
ORIGINAL: MakeeLearn
ORIGINAL: Bearcat2
ORIGINAL: MakeeLearn
Were the propeller tips painted yellow for a reason?
A RPM/Power Band visual gauge?
Gives a visual aid as to where the propeller is, so you don't walk into it.
Do you know if it was florescent?
Normally, no
"After eight years as President I have only two regrets: that I have not shot Henry Clay or hanged John C. Calhoun."--1837
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fcooke
- Posts: 1158
- Joined: Mon Jun 17, 2002 10:37 pm
- Location: Boston, London, Hoboken, now Warwick, NY
RE: Corsair first crank
Have to say the Corsair, the B-26 and the B-17 are my favorite WW2 planes. Also a fan of the Jug and the Dauntless.....
In more modern times (and Commercial) - plant me on a 747 every time.
In more modern times (and Commercial) - plant me on a 747 every time.
RE: Corsair first crank
ORIGINAL: MakeeLearn
ORIGINAL: Bearcat2
ORIGINAL: MakeeLearn
Were the propeller tips painted yellow for a reason?
A RPM/Power Band visual gauge?
Gives a visual aid as to where the propeller is, so you don't walk into it.
Do you know if it was florescent?
For me it doesn't make sense to be florescent. On the ground they wouldn't service it in complete darkness and if flying it will be easier to spot.
I do not know what is scarier: that I do understand nothing of this demonic script or that I am starting to see the demons that it evokes.
Me, studying for a PHD entry exam in Applied Mathematics.
Me, studying for a PHD entry exam in Applied Mathematics.
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MakeeLearn
- Posts: 4274
- Joined: Sun Sep 11, 2016 1:01 pm
RE: Corsair first crank
The painted tips make the propeller easier to see, which is a big benefit with engines running on a crowded carrier deck. I also thought maybe:
...at different RPM/Power Bands the propeller will appear to turn clockwise, turn counterclockwise, appear to stabilize or show bouncing fluctuation patterns. The painted tips make this easier to see. Spending enough time around it, one could begin to associate visual propeller patterns with the output of the engine.
...at different RPM/Power Bands the propeller will appear to turn clockwise, turn counterclockwise, appear to stabilize or show bouncing fluctuation patterns. The painted tips make this easier to see. Spending enough time around it, one could begin to associate visual propeller patterns with the output of the engine.
RE: Corsair first crank
Which reminds me on a photo from the London "blitz" of a HE111 which props do not appear to spin at all [:D]
It was assumed a model plane was pasted on an air photo from London and sold as real WW2 combat photos.
But WAIT, I see the Germans had "victor" bombers which time travelled back stolen from the late 60ties RAF [X(]
and WAIT no. 2 I found also an He111 photo over a russian city without the props spinning, like in the obvious real phot from Makee Learn above....[8|]
It was assumed a model plane was pasted on an air photo from London and sold as real WW2 combat photos.
But WAIT, I see the Germans had "victor" bombers which time travelled back stolen from the late 60ties RAF [X(]
and WAIT no. 2 I found also an He111 photo over a russian city without the props spinning, like in the obvious real phot from Makee Learn above....[8|]
RE: Corsair first crank
Never argue with a spinning propeller.ORIGINAL: Bearcat2
ORIGINAL: MakeeLearn
Were the propeller tips painted yellow for a reason?
A RPM/Power Band visual gauge?
Gives a visual aid as to where the propeller is, so you don't walk into it.
Bill Goin
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geofflambert
- Posts: 14887
- Joined: Thu Dec 23, 2010 2:18 pm
- Location: St. Louis
RE: Corsair first crank
I notice this model has a three blade prop. I think most versions had 4 blades.
RE: Corsair first crank
ORIGINAL: geofflambert
I notice this model has a three blade prop. I think most versions had 4 blades.
Coming in late on this...
All F4U-1 versions had three bladed props. The -4 was the first to get the 4 bladed. The -4 had a more powerful version of the PW-2800 and needed the 4 blades to get all the power out of it. This Corsair is a -1d (or the Goodyear equivalent, I think it's probably an FG-1d). Most of -1 survivors are -1ds. they built more of them than the -1a or the -1 (the -1b never went into production and was later used to indicate FAA modified airframes and the -1c was identical to the -1d but with 4X 20mm cannons).
Bill
WitP AE - Test team lead, programmer
RE: Corsair first crank
The visual effect of the prop spinning backwards and forwards is due to the frame rate your viewing.
Check out the wagon wheels of one of the old westerns appearing to move backwards and forwards as it slows down.
That's a good demonstration of the effect.
It's also why when a film camera takes movies with a TV in the picture the screen of the TV has
a flickering effect. The camera and the TV have different frame rates.
In real life you don't see that.
Check out the wagon wheels of one of the old westerns appearing to move backwards and forwards as it slows down.
That's a good demonstration of the effect.
It's also why when a film camera takes movies with a TV in the picture the screen of the TV has
a flickering effect. The camera and the TV have different frame rates.
In real life you don't see that.
RE: Corsair first crank
ORIGINAL: LeeChard
The visual effect of the prop spinning backwards and forwards is due to the frame rate your viewing.
Check out the wagon wheels of one of the old westerns appearing to move backwards and forwards as it slows down.
That's a good demonstration of the effect.
It's also why when a film camera takes movies with a TV in the picture the screen of the TV has
a flickering effect. The camera and the TV have different frame rates.
In real life you don't see that.
What you're seeing in those instances is the beat frequency between the frame rate of the camera and the object that's spinning or changing at its own frame rate.
Bill
WitP AE - Test team lead, programmer
RE: Corsair first crank
That is a fantastic picture of SBDs flying near the beginning of this thread.
Member: Treaty, Reluctant Admiral and Between the Storms Mod Team.
RE: Corsair first crank
Probably one of the most boring aviation videos I have ever seen. Engine start and folding wings. Gee.[8|]
This is one Czech that does not bounce.
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MakeeLearn
- Posts: 4274
- Joined: Sun Sep 11, 2016 1:01 pm
RE: Corsair first crank
ORIGINAL: wdolson
ORIGINAL: LeeChard
The visual effect of the prop spinning backwards and forwards is due to the frame rate your viewing.
Check out the wagon wheels of one of the old westerns appearing to move backwards and forwards as it slows down.
That's a good demonstration of the effect.
It's also why when a film camera takes movies with a TV in the picture the screen of the TV has
a flickering effect. The camera and the TV have different frame rates.
In real life you don't see that.
What you're seeing in those instances is the beat frequency between the frame rate of the camera and the object that's spinning or changing at its own frame rate.
Bill
I remembered the Wagon wheel effects study from physics. And from having used timing lights to set the timing on engines. This effect can also be produced by any artificial lights and it's connection to RPM of an object. I think Ive seen the wagon wheel effect in natural light. I will have to look into that.