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RE: F2G Corsair Build Sneak Peak!!! - 11/20/2005 11:47 AM   
dionysusbacchus


 

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Status: offline 		Richard,

Very nice work on the doors, I was expecting to see a single servo system so I was a little disappointed to see all those servos, but they are light and it looks good. When you paint the wheel well just paint over the servos, that will help hide everything. I see the end point for doors closed will keep the servos from buzzing, nice work!

I like your cowl flap hinge idea, be interesting to see what you come up with! I've got other project to finish before I tackle those details, but I like seeing the ideas, so keep em coming.

Dion

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RE: F2G Corsair Build Sneak Peak!!! - 11/20/2005 1:27 PM   
Richard L.



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Status: offline 		Hi Luke, what is the official color for the wheel wells on the F2G? I've seen some painted in yellow zinc chromate and some in gray, but I'm not sure what shade of gray.

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RE: F2G Corsair Build Sneak Peak!!! - 11/20/2005 9:02 PM   
dionysusbacchus


 

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quote:

ORIGINAL: Richard L.

Hi Luke, what is the official color for the wheel wells on the F2G? I've seen some painted in yellow zinc chromate and some in gray, but I'm not sure what shade of gray.


That's a good question Richard! I've seen all kinds of colors on the plastic model F2G's, but the inner doors are always the color of the fuselage. I admit to drifting from scale on my plane, the struts and tail wheel should all be blue. It's just that when you paint them all blue and the plane is blue you can't see any detail, so I deviated! This plane is just for fun anyway and I can always give them a new paint job if I don't like it. Post some pictures of the wheel wells if you come across them again. I'm thinking about going with the Zinc Chromate for my wheel wells to help bring out the detail. I love your F2G by the way, very nicely done! One interesting thing to note about the paint job on your F2G is that the blue squares on the cowl were a lighter shade of blue than the rest of the plane. I know because I was considering that paint job, but it had a tail hook and I didn't want that option.

Dion



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RE: F2G Corsair Build Sneak Peak!!! - 11/20/2005 10:16 PM   
rt3232


 

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Status: offline 		Hi luke
I ask the same question of Dave Bronk, he came back with, out of the factory a greeanish zinc cormate, and in the fied or ship yellow, green, and an off white was used. I was not able to confirm or discount from my limited ref; books

Cheers Bob T

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RE: F2G Corsair Build Sneak Peak!!! - 11/21/2005 3:34 AM   
NuttyPilot


 

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quote:

ORIGINAL:

The other pic is my first thinking on getting the cowl flaps working. I'm thinking of springing the flaps open and using the cable to pull them in. Not sure how to do the infill bits between the flaps.


This and the cowl flaps are the next issues to be tackled. I will also have to rethink the best way to retract the tailwheel. I've never had any major problems with air systems but the servo route would be simpler.

Thanks again
Richard




Richard,

I do believe that the servo is simpler, but when retracting Mains and Tail, the question was how to operate them together. I had built a single servo dual arm operation, with the air valve on one, the tailwheel on the other. The linkage for the tail wheel ran the length of the plane. Talk about binding... My problem was it never seemed to have enough push to FULLY retract. I went with air instead...

It looks like you have used aluminium for you cowl flaps. Mine are made the same. The picture shows prestages of the operation. This was about 1 month ago. My camera has been down since then, but I will submit the updated flaps soon.

How it works... Im sure you have seen the "disc". All of the "actuators" (However many you want to operate) are at perpendicular to the disc when fully opened. The holes are predrilled on the disc, but they can be redrilled any where you want them. Although, I had to be carefull about the tank deck. In the retract position, the lines may hit the deck. Im not sure if it the same on the Royal (again, I have a TF GE Corsair). To avoid the deck, I had connected the two flaps together where it gave me problems.

Hopefully this helps. Im not sure if you are to far in the build to consider this design but just a suggestion.

Thanks,
Jon


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< Message edited by NuttyPilot -- 11/21/2005 4:29 AM >

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RE: F2G Corsair Build Sneak Peak!!! - 11/21/2005 6:16 AM   
Richard L.



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quote:

ORIGINAL: dionysusbacchus

I love your F2G by the way, very nicely done! One interesting thing to note about the paint job on your F2G is that the blue squares on the cowl were a lighter shade of blue than the rest of the plane.


You are right. The blue squares on the cowl should be a slightly lighter shade of blue. On the other hand, the rest of the plane should be much darker as glossy sea blue is a very dark grayish color.


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RE: F2G Corsair Build Sneak Peak!!! - 11/21/2005 11:25 AM   
Bundy



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Status: offline 		Hi Jon

And thanks for the input. Interesting idea on getting those cowl flaps to work. My situation is a little different. I'm using an AXI 5330/18 to power this 82" Corsair and to get the right sound I'm trying something new. A company in Germany can put any sound on a chip smaller than a postage stamp and I've sent over some real R-2800 sounds. I will then play these thru a 120watt speaker and 70 watt amp mounted in the nose all controlled by the throttle channel. This speaker needs a sealed sound box to get the most noise from it so the whole nose is a sealed plywood box. Hope the pics show this. This doesn't leave much room for cowl flaps around the outside of the speaker box - next challenge!

Tail wheel is still a work in progress. Due to lack of radio channels to work everything, I'm thinking the canopy will be on the retract channel being open when the gear is down and closed when the gear is up. Since the canopy will probably be air operated it makes a lot of sense to work the tailwheel from the same air lines. If I go the servo route I will more than likely use another JR Matchbox to drive two servos but this is more complication - air is looking good.

Thanks again for the input and please post some more pics

Richard





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RE: F2G Corsair Build Sneak Peak!!! - 11/22/2005 1:18 AM   
Richard L.



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quote:

ORIGINAL: dionysusbacchus

Post some pictures of the wheel wells if you come across them again. I'm thinking about going with the Zinc Chromate for my wheel wells to help bring out the detail.


Luke, there are some pictures showing the wheel wells on this page: Special Hobby 1/72 F2G Corsair

The wheel wells are painted "yellow zinc chromate".

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RE: F2G Corsair Build Sneak Peak!!! - 11/22/2005 2:47 AM   
Bundy



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Status: offline 		Hi All

Can someone please help me understand how the actual cowl flaps were/are attached to the actuator arms? From the pics attached and from my readings I think the actuator arms were sprung and the perimeter cable pulled them in to close the cowl flaps but how did the cowl flaps 'slide' across the actuator arms as they opened and the wedge between the individual flaps opened up?

Thanks

Richard



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RE: F2G Corsair Build Sneak Peak!!! - 11/22/2005 5:38 AM   
fyredog



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Status: offline 		I gotta say this, there is nothing but good stuff coming out of this thread!

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RE: F2G Corsair Build Sneak Peak!!! - 11/22/2005 6:17 AM   
NuttyPilot


 

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quote:

ORIGINAL: Bundy

Hi All

Can someone please help me understand how the actual cowl flaps were/are attached to the actuator arms? From the pics attached and from my readings I think the actuator arms were sprung and the perimeter cable pulled them in to close the cowl flaps but how did the cowl flaps 'slide' across the actuator arms as they opened and the wedge between the individual flaps opened up?

Thanks

Richard


Well, that certainly looks like cables to me.... Great picture Richard. The F2G MUST be cable run obviously. In early pictures, and other versions, the flaps could be opened in sets. Im not sure that is possible with the pictures you have. Looks like that all open or close together... If you get it rigged like that, WOW, you the man! Cant wait to see the finished results.

Damn this thread... to many ideas and new thinkings, I love it!

Thanks
Jon




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RE: F2G Corsair Build Sneak Peak!!! - 11/22/2005 12:24 PM   
Mike Denest



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Status: offline 		On most radial engined aircraft, the cowl flaps are spring loaded to the open position. Either a cable or articulated driveshaft positioned by a cockpit lever will open or close the flaps manually. Read the FAA Advisory Circular AC 65-12A discussion on engine cooling systems, page 30 of the PDF. It describes the operation of a typical cowl flap system.
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/614bd958f4d610df862569ee0077e5f0/$FILE/Chapter%206.pdf

Oh yeah, there will be a test!

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RE: F2G Corsair Build Sneak Peak!!! - 11/22/2005 3:22 PM   
Connery



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Status: offline 		Yes Richard, but these pics show them to be painted grey. I guess it all depends on which version you are doing.

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RE: F2G Corsair Build Sneak Peak!!! - 11/23/2005 1:20 PM   
Kelsey_B


 

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Status: offline 		I have a general question about the kit. There are several hardwood pcs made from a dark wood. What wood is this?


How about some fuctioning guns Luke.

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RE: F2G Corsair Build Sneak Peak!!! - 11/23/2005 2:01 PM   
mcarleno



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Status: offline 		If they're hard, dark, and heavy probably maple.

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RE: F2G Corsair Build Sneak Peak!!! - 11/23/2005 2:58 PM   
dionysusbacchus


 

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quote:

ORIGINAL: Richard L.
Luke, there are some pictures showing the wheel wells on this page: Special Hobby 1/72 F2G Corsair

The wheel wells are painted "yellow zinc chromate".


I think that is the correct color, I know the gun bays were painted yellow Zinc Chromate as well. Thanks!

Now on to the cowl flaps, although a little off topic for this thread:

quote:

Well, that certainly looks like cables to me.... Great picture Richard. The F2G MUST be cable run obviously.


No, the F2G had pushrod opened cowl flaps, if it did use a cable, when the cowl flaps were opened the cable would stick out around the side of the plane!

quote:

Can someone please help me understand how the actual cowl flaps were/are attached to the actuator arms? From the pics attached and from my readings I think the actuator arms were sprung and the perimeter cable pulled them in to close the cowl flaps but how did the cowl flaps 'slide' across the actuator arms as they opened and the wedge between the individual flaps opened up?

Thanks

Richard


See the picture below, the flaps were made of two sheets of aluminum so that it had a gap on each side. The flap was slid onto the hinge plate, to hold it there a small cable was attached to the flap and the small tab you see on the flap ring. They appear to be kind of free floating in a way, guess that keeps them from binding. The tab that the cable was attached to was shaped a special way so that the flap could slide on it smoothly pushing the flap up flush with the cowl when the flaps were closed. This could be duplicated with a Robart hinge point by gluing a strip of aluminum or brass to each hinge. Make each flap out of two pieces of aluminum, gluing them together with a piece of CA hinge material in the middle so they would have a gap at each end. I'm going to try it with my 82" Corsair.


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RE: F2G Corsair Build Sneak Peak!!! - 11/23/2005 3:04 PM   
dionysusbacchus


 

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ORIGINAL: Kelsey_B

I have a general question about the kit. There are several hardwood pcs made from a dark wood. What wood is this?


How about some fuctioning guns Luke.


If you want to cut your own kit use Maple or Walnut for the motor mounts and things, I just bought a bag of hardwood from Hobby Town, not sure what kind of wood it is though!

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RE: F2G Corsair Build Sneak Peak!!! - 11/23/2005 3:17 PM   
dionysusbacchus


 

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Status: offline 		Now back to the F2G build! Kind of slow but it’s the details! Went to a nice store we have in town called “Corsair City” and picked up a Corsair wheel well detail kit, what luck! See first picture.

Next picture you can see the gear door servo in the front of the wing. Got the doors working but I had to take them off to finish and detail them. The servo opens and closes the doors very easily.

Next pictures show the wheel wells with the false plastic side ribs installed. Corsairjock was the one that originally called for a detailed wheel well piece, not sure what he had in mind but making it in 3 separate pieces seemed like the best way to fit the most wheel wells.

Last picture shows the top piece temporarily fitted. This will be permanently glued in after the top sheeting is finished and what’s left of ribs W-4 and W-5 can be removed. The plastic part will be glued directly to the bottom of the top sheeting.

Till next time…


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RE: F2G Corsair Build Sneak Peak!!! - 11/23/2005 3:25 PM   
Mike Denest



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Status: offline 		I had a chance to crawl under the restored "Marine's Dream" at Oshkosh a couple years ago. The wheel wells and corresponding interior structure was yellow zinc chromate.


quote:

ORIGINAL: Richard L.

Hi Luke, what is the official color for the wheel wells on the F2G? I've seen some painted in yellow zinc chromate and some in gray, but I'm not sure what shade of gray.



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RE: F2G Corsair Build Sneak Peak!!! - 11/23/2005 4:08 PM   
Richard L.



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quote:

ORIGINAL: Mike Denest

I had a chance to crawl under the restored "Marine's Dream" at Oshkosh a couple years ago. The wheel wells and corresponding interior structure was yellow zinc chromate.



Thanks Mike. Yellow zinc chromate it is.

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RE: F2G Corsair Build Sneak Peak!!! - 11/24/2005 3:22 AM   
dionysusbacchus


 

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Status: offline 		As far as the gear doors go, I've settled on my color... Green Zinc Chromate. I was looking through some of my mags and found a factory fresh restoration of a late F4U-1D, the pictures will show you what his research found. His intention in the restoration was to bring the Corsair back to the day it rolled off the Goodyear assembly line. Corsairs had a variety of colors, but I'll go with what looks best, yellow would be to bright. Marines Dream is not an accurate restoration, he even pulled the fabric off the wings and covered it with aluminum! Yellow was used in the gun bay, but that's it, not sure why?

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RE: F2G Corsair Build Sneak Peak!!! - 11/24/2005 4:06 AM   
fyredog



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Status: offline 		Corsair City on Mapquest Leads to Dion's Garage door??? How's that? Looks good Man! Very Inspiring

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RE: F2G Corsair Build Sneak Peak!!! - 11/27/2005 2:05 AM   
dionysusbacchus


 

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quote:

ORIGINAL: fyredog

Corsair City on Mapquest Leads to Dion's Garage door??? How's that? Looks good Man! Very Inspiring


Thanks Steve, lol!

I think sitting this project down for so long has really hurt the interest people have in it, so I’m going to be taking fewer pictures and maybe just covering some of the highlights during the build just so I can at least finish the plane and have a good build thread documenting it. After the wing is done it’s going to go very quick anyway. I want to cover the next step in more detail though for those that may want to use these detail parts on their plane.

Before the top wing sheeting is installed over the wheel wells, I needed to make sure the gear doors work perfectly. Also I needed to cut the plastic piece for the top to shape. I just stuck in on the top of the wing and then used a pencil to mark the shape, with a Dremel Tool I then cut trimmed it to shape using a router type bit. After checking the fit go ahead and sheet the top of the wing over the wheel well. To give it a finished look I just took some Light Weight Spackle on my finger and filled the seam in the corners. Before it dries wipe it down with a paper towel, which will smooth it out so no sanding is needed. When that dries I just wicked some thin CA in the corners to harden and seal the Spackle. The last picture shows the filled and sealed wheel well corners.


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RE: F2G Corsair Build Sneak Peak!!! - 11/27/2005 2:53 AM   
nemesis4u



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Status: offline 		Luke,
You are a Master,,,Love those wheelwell details...Man ..Can't wait to see more..Please believe us that there is a ton of interest in your build..We are in silence as we AWE in your work!!!!!!

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RE: F2G Corsair Build Sneak Peak!!! - 11/27/2005 3:23 AM   
SVX



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Status: offline 		Did I miss the fabrication of the bombs? Luke, can you go into some detail either here or
elsewhere of the fabrication of the landing gear struts? I purchased a long time ago some
Century Jet retract for my P-40 and would like to change the scissors to a more scale appearance.
I can tell you I am apprehensive on drilling the rivets out if the current scissors without knowing
how to put it all back together. Beautiful job as always, have you decided on a color scheme?

Dust

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