GROUP BUILD - Top Flite Giant Scale F4U Corsair
11-03-2006, 01:29 AM
#1252
RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
ORIGINAL: wulf190
And there you have it....I knew Gary would be the man for the little squares. Winston, you might try using 1/4" 3m plastic masking tape for crisp lines. It's REAL flexible and doesn't bleed...expensive and tough to find of course as well. Any good auto paint store will have it though. Get a bunch, you'll use it everywhere, especially on canopies and things that require compound curves. Good stuff.
And there you have it....I knew Gary would be the man for the little squares. Winston, you might try using 1/4" 3m plastic masking tape for crisp lines. It's REAL flexible and doesn't bleed...expensive and tough to find of course as well. Any good auto paint store will have it though. Get a bunch, you'll use it everywhere, especially on canopies and things that require compound curves. Good stuff.
11-03-2006, 02:30 AM
#1253
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
You guys do amazing work. I am assamed to say that I only put together ARTF's and could never do the quality of work you guys do
Dennis
www.densplanes.co.uk
Dennis
www.densplanes.co.uk
11-03-2006, 09:50 AM
#1255
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Cimara
A tape that is readily available is called FineLine it is plastic and most body shops use it and most automotive paint supply stores sell it.. there two styles blue and peee green, I have used both but like the blue as it stretches nicely around radius's
Doolittleraider
You are right about the 4 oz but you add that to the 3 more you get when putting holes in the tail wheel box and it eliminates over a pond of dead weight out of the nose when you go to balance your bird, I am only saying this from experience.
Cheers Bob
11-03-2006, 11:36 AM
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Bob,
I would be curious to have someone weigh the box before and after as well. To be precise the guy on rcscale builder saved .67 ounces
which equates to 2.4 ounces up front even less than the 4 ounces I roughly estimated. So in order to save a pound up front you'd have to remove 3.7 ounces from the box. To save 1/2 pound up front 1.5 ounces. These calculations take into account the lightening holes in the tail surfaces. However, the tail wheel box is heavier would probably be more signigicant or worth doing. But it all adds up in the long run.
I only offer this as discussion. My disclaimers: I am a lazy builder, this is my first all woodkit warbird, and I do understand the fact that all the little weight adds up ("small creeks make big rivers").
Peter
I would be curious to have someone weigh the box before and after as well. To be precise the guy on rcscale builder saved .67 ounces
which equates to 2.4 ounces up front even less than the 4 ounces I roughly estimated. So in order to save a pound up front you'd have to remove 3.7 ounces from the box. To save 1/2 pound up front 1.5 ounces. These calculations take into account the lightening holes in the tail surfaces. However, the tail wheel box is heavier would probably be more signigicant or worth doing. But it all adds up in the long run.
I only offer this as discussion. My disclaimers: I am a lazy builder, this is my first all woodkit warbird, and I do understand the fact that all the little weight adds up ("small creeks make big rivers").
Peter
11-03-2006, 02:24 PM
#1257
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Doolittleraider
First I am also a newbe to scale so to speak, and my only motive in what I have posted is to try to keep others from making the same mistakes I have as these birds are not cheep by any std.
There are pic's back in this thread of what I did, I used a 3/4 hole saw and saved all of the centers weighed them on a postal scale, used a piece of wood with the same moments, as the fus and added weight to balance (#6 lead shot) all of the numbers are also back there to. When I built my first bird no mods just out of the box,I had to add just over 2lbs to get a good balance at the book C/G. On this new bird it balanced right on with no weight added , but I wanted the C/G to be 5/8 fwd and that required 12 oz in the fuse right behind the fire wall, and do to engine problems with the 62 the new bird is still a hanger queen, and yes it will increase the landing speed but should greatly decrease the snap when close to the ground and slow. After a few flights I may remove some of the nose weight. Now with my flying season over till next year (do to stiff hands in the cold), will have to wait to see how it will fly.[&o]
Hope this helps
Cheers Bob
11-03-2006, 06:48 PM
#1259
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Bob what kind of hole saw do you use for that? I should have done similar on my 47 to be honest and when I tackle the Corsair will most defintely be on a weight reduction excercise right accross the bird. the 47 is going to be tail heavy due to having to repair the stab and all the filler associated with that repair, still most will sand off but just have to live with it being a tad heavy.
Add to the fact with all my wing mods and I think this bird will come out close on 30lbs[:'(]
Mate of mine is building a big 130 odd inch DH Mosquito and has applied that to the tail feathers. He has cut out about 1/2 lb maybe more in weight from those areas alone.
cheers
Peter
Add to the fact with all my wing mods and I think this bird will come out close on 30lbs[:'(]
Mate of mine is building a big 130 odd inch DH Mosquito and has applied that to the tail feathers. He has cut out about 1/2 lb maybe more in weight from those areas alone.
cheers
Peter
11-03-2006, 08:46 PM
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Thanks I am glad I didnt toss that Eastwood catalog that came in the mail . They have the tape . My 62 arrived to day hard to believe you can get 5 hp out of such a small engine.
11-03-2006, 08:57 PM
#1261
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Hi Pete
I used a milwackie (question the spelling) wirh a 1/4 pilot bit and 3./4OD but from my early days in the convairs low speed wind tunal the rule of thumb was 11/2 times the thickness from th edge of mtl to the hole and that is with a/c grade ply So with todays lite ply I have been using 2 to 21/2 times the thickness to edge of hole and and 11/2 thickness between holes, and anyn size drill or hole saw that fits, just remember to clean up the edges so there no burs or cracks and you should be good to go, allways CA the edges
Hope this makes sence as jus came back from outing with the wife great dinner and to meany libations
Cheers Bob
11-03-2006, 11:33 PM
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
LOL Bob,
mate you were almost coherent!! Av a drink for me too!!
yup worked out most of it, especially CA on the edges of the hole.
cheers
me
mate you were almost coherent!! Av a drink for me too!!
yup worked out most of it, especially CA on the edges of the hole.
cheers
me
11-04-2006, 02:10 AM
#1263
RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
ORIGINAL: rt3232
Cimara
A tape that is readily available is called FineLine it is plastic and most body shops use it and most automotive paint supply stores sell it.. there two styles blue and peee green, I have used both but like the blue as it stretches nicely around radius's
Cimara
A tape that is readily available is called FineLine it is plastic and most body shops use it and most automotive paint supply stores sell it.. there two styles blue and peee green, I have used both but like the blue as it stretches nicely around radius's
Yikes!!! When you peee green, who do you call first? Your wife, your doctor, your mistress or your priest?
11-07-2006, 11:00 PM
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Well I got this far hopefully it keeps going this good this wing is a big pain but not as bad as I thought .Off day tomorrow time to break out the epoxy and finish it up
11-07-2006, 11:23 PM
#1267
RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
ORIGINAL: rt3232
Ctflyboy, mike, smugater any one have any new pic's
Cheers Bob
Ctflyboy, mike, smugater any one have any new pic's
Cheers Bob
Tom
11-08-2006, 08:33 AM
#1268
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Hay Cimara
Looks like you are doing great, nice pic's, I don't remember if you are doing gear doors but if you are don't forget to add the extra ribs for the wheel wells.
Smugater
When you get that exhaust from Keleo please post pic's also what engine are you using?? and are you going to make three tube angle cut exit points.
Cheers Bob
11-08-2006, 08:47 AM
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Oh, so you're the one! Kelvin mentioned to me that he was working on a scale exhaust for a corsair. He's making me one for my G-62 powered TFGS Corsair. Please post pix when they arrive!
Sam
PS: Still repairing my Spit, then back into the Corsair!
Sam
PS: Still repairing my Spit, then back into the Corsair!
11-08-2006, 11:46 AM
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
axi makes a outrunner for 750.00 that will fly this plane! expensive though. full scale engine and sound box sounds fun
11-08-2006, 02:38 PM
#1272
RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
ORIGINAL: rt3232
Smugater
When you get that exhaust from Keleo please post pic's also what engine are you using?? and are you going to make three tube angle cut exit points.
Cheers Bob
Smugater
When you get that exhaust from Keleo please post pic's also what engine are you using?? and are you going to make three tube angle cut exit points.
Cheers Bob
It's going on an OS FS 120 and will have the three tube angled exits both starboard and port.
11-08-2006, 03:15 PM
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Hi Guys,
I built a 1/8th scale TF Corsair acouple of years ago and then had a stroke. I decided that the GS was easier to work on so I started one of those. My 1/8th, which is still in the garage has a Saito120 four stroke in it. Before I sell it I want to finish it and add a 90 degree elbow to it so that the exhaust can go somewhere else. Can anyone here recomend a source for this elbow? I know I have seen them. I also knew every nurse in both hospitals was madly in love with me. My wife says I'm sometimes wrong. I'm not real sure what she means by that but help me out if you can.
David[8D][8D][8D][8D][8D][8D]
I built a 1/8th scale TF Corsair acouple of years ago and then had a stroke. I decided that the GS was easier to work on so I started one of those. My 1/8th, which is still in the garage has a Saito120 four stroke in it. Before I sell it I want to finish it and add a 90 degree elbow to it so that the exhaust can go somewhere else. Can anyone here recomend a source for this elbow? I know I have seen them. I also knew every nurse in both hospitals was madly in love with me. My wife says I'm sometimes wrong. I'm not real sure what she means by that but help me out if you can.
David[8D][8D][8D][8D][8D][8D]
11-08-2006, 03:38 PM
#1274
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Smugater
Thats great are the exit point assy's going to be separate or attached to the manifold?? what I found with my custom muffler exhaust side exit is part of the muffler and the right side is separate and attached to the fire wall with large blue silicon tube connecting, and I think that is why right side is about 3 db quitter.
Dave
Try Tower hobbies or call 800-637-6050 and a vary nice lady will help you find what you need,
Cheers bob
11-08-2006, 05:05 PM
#1275
RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair
Thats great are the exit point assy's going to be separate or attached to the manifold?? what I found with my custom muffler exhaust side exit is part of the muffler and the right side is separate and attached to the fire wall with large blue silicon tube connecting, and I think that is why right side is about 3 db quitter.
[/quote]
They will be detachable from from the manifold and will have flex tubing passing through the firewall. Each flex tube will attach to a smaller canister that mounts to a hardpoint behind the firewall. These canisters support the exhaust stack assembly that crosses over behind the firewall and exits on the opposite side from the inbound flex tube from the manifold. At least that's how Kelvin described his design. Apparently he's already built one for a H9 Corsair so if that pilot is hanging around maybe he can chime in. I should have pictures in a week or so.
Tom