RE: 1/6 Scale F4U Corsair Group Build  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: chilie, THESCALEMAN
  Printable Version
       



All Forums >> RC Airplanes >> RC Scale Aircraft >> RE: 1/6 Scale F4U Corsair Group Build Page: <<   < prev  16 17 [18] 19 20 21 22 23 24 25   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: 1/6 Scale F4U Corsair Group Build - 6/12/2008 10:36:19 PM   
p 40


 

Posts: 67
Joined: 6/7/2008
From: BORGHETTO DI VARA LA SPEZIA, ITALY
Status: offline 		[URL=http://imageshack.us] [/URL]

(in reply to p 40)
       Post #: 426

RE: 1/6 Scale F4U Corsair Group Build - 6/12/2008 11:58:42 PM   
p 40


 

Posts: 67
Joined: 6/7/2008
From: BORGHETTO DI VARA LA SPEZIA, ITALY
Status: offline 		excuse me

(in reply to p 40)
       Post #: 427

RE: 1/6 Scale F4U Corsair Group Build - 6/13/2008 12:40:24 AM   
rwright142



Posts: 1747
Joined: 9/2/2004
From: Beech Grove, IN, USA
Status: offline 		No need to apologize.
We will refer to many pictures when we begin working on the cockpit.

_____________________________

In the works: 1/6 Scale F4U Corsair

(in reply to p 40)
       Post #: 428

RE: 1/6 Scale F4U Corsair Group Build - 6/14/2008 7:18:49 PM   
p 40


 

Posts: 67
Joined: 6/7/2008
From: BORGHETTO DI VARA LA SPEZIA, ITALY
Status: offline 		hi chad you have received the my new mail hi

(in reply to p 40)
       Post #: 429

RE: 1/6 Scale F4U Corsair Group Build - 6/16/2008 2:40:55 AM   
Chad Veich



Posts: 2743
Joined: 12/13/2001
From: Litchfield Park, AZ, USA
Status: offline 		A small update on progress. My wife had minor surgery this past Wednesday and, due to a slower than normal recovery, I've not been able to get out of the house much. This has prevented me from making much progress on the last few tail kits. However, it has provided opportunity to do some vacuum forming and I have the first stab tip completed. I'm happy with the results though I will be making a few minor adjustments. Unfortunately, I can't get my digital camera to zoom in tight enough to get a shot of the detail. (even on Macro)

As you recall, this is what we were attempting to achieve.



Here is my prototype. You can't see it but the internal stiffeners are molded into the interior part of the tip.



Here it is with the elevator in place. Maybe, if you squint real hard, you might get a faint glimpse of the detail I was talking about above. I'll finish it up and shoot some primer on it and maybe it will be easier to photograph.



I'll leave it to you guys to decide if it is worth the effort but it is quite visible when the elevator is deflected. A few screw heads and some weathering should really make it stand out although, admittedly, it may not be one of those items that gets noticed alot on the finished airplane. Still, I dig this stuff so I'm going to forge ahead!

< Message edited by Chad Veich -- 6/16/2008 2:41:59 AM >

(in reply to p 40)
       Post #: 430

RE: 1/6 Scale F4U Corsair Group Build - 6/16/2008 11:35:53 AM   
p 40


 

Posts: 67
Joined: 6/7/2008
From: BORGHETTO DI VARA LA SPEZIA, ITALY
Status: offline 		GOOD CHAD TE AND' VERY BEAUTIFUL

(in reply to Chad Veich)
       Post #: 431

RE: 1/6 Scale F4U Corsair Group Build - 6/18/2008 6:30:03 AM   
SMUGator



Posts: 1362
Joined: 10/28/2003
From: Sammamish, WA, USA
Status: offline 		Those details on the stab and elevator look really nice, Chad. That will be a great add to get those surfaces to stand out.

I did get the Stay Brite Silver Solder from Micromark yesterday and had a few minutes to give it a little test tonight on some scrap plate steel and music wire. After the standard sanding and cleaning, I clamped the "arm" in place, applied a drop of flux and heated the music wire to red with a propane torch. Just a touch of the solder to the music wire is plenty to fill. It takes a few minutes to cool, so leave it a alone for a bit.

Afterwards, it withstood the old "can I clamp this in the vise and break it with a pair of channel locks" test, so I'm pretty happy with that result. I'd be willing to make some torque rods for others if needed now that I know how to do it.

Tom

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize


_____________________________

Currently building a 1/6 Scale F4U-1A Corsair (BuNo 17777) and finishing a TF 1/8 Corsair

(in reply to Chad Veich)
       Post #: 432

RE: 1/6 Scale F4U Corsair Group Build - 6/18/2008 7:27:36 AM   
SMUGator



Posts: 1362
Joined: 10/28/2003
From: Sammamish, WA, USA
Status: offline
quote:

ORIGINAL: Remklep

Today I finished making the elevator control horn.
I started by sawing 2 controlhorns from some 1.5mm high carbon steel and drilled holes, one 5mm and three 2 mm.
Then I glued the parts S10 to some brass tubes (with inner diameter 4mm) using JB-Weld.
After having sawed a piece of 4mm piano-wire to the correct lenght I bend one end at a right angle using a torch.

Then I slid a brass tube with S10 attached, then the 2 steel controlhorns and finally the last brass tube with S10 attached over the 4mm pianowire.
After some more heating, I bend the other side if the wire at a right angle.
I secured spacers between the 2 steel control horns to keep them 4mm apart for the ball-link going between them later
Then I soldered the control horns to the piano-wire using silver-solder and a torch.

I use 2 control horns, because I am going to put a metal ball-link between them, connected to a 4mm carbon control cable.
The pictures will clarify what I did

Danny



Hi Danny,

What are the advantages of the 2 control horn set-up vs a single control horn connected with a metal clevis? I'll likely build mine in the next couple of weeks, and I'm interested to hear why you chose this set-up.

Thanks in advance,
Tom

_____________________________

Currently building a 1/6 Scale F4U-1A Corsair (BuNo 17777) and finishing a TF 1/8 Corsair

(in reply to Remklep)
       Post #: 433

RE: 1/6 Scale F4U Corsair Group Build - 6/18/2008 9:16:31 AM   
Remklep



Posts: 95
Joined: 12/10/2007
From: Haarlem, NETHERLANDS
Status: offline
quote:

ORIGINAL: SMUGator

Hi Danny,

What are the advantages of the 2 control horn set-up vs a single control horn connected with a metal clevis? I'll likely build mine in the next couple of weeks, and I'm interested to hear why you chose this set-up.

Thanks in advance,
Tom


It server 3 purposes, firstly having 2 control horns makes them redundant in case of failure, offcourse, this means I'll have to check the horn's regularly.

Secondly, because of the size of the control horns the torque on the silver-solder will be substantial, so spreading the torque over 2 horns gives me some ease of mind.
According to a little servo torque program I have, the torque required to deflect the elevators at 15 deg at 150 km/h is 6 kgcm.
However, at the silversolder the radius is not 1 cm, but just 4 mm, therefore, the silver solder will have to be cope with 6/0.4 = 15 kg or 150 N of force, so spreading that out over 2 control horns, halves the force to 75 N.
I know 15 deg deflection at 150 km/h is a lot, but in these extreme circumstances it is stupid to loose the plane because of a $2 dollar part.

Lastly, I intend to use metal ball-links.
Clamping the ball-link between 2 control-rods completely eliminates any torque acting on the bolt that goes through the ball-link. Therefore it can only fail if the servo or aerodynamic forces exceed the maximum shear the bolt can take.

Cheers,

< Message edited by Remklep -- 6/18/2008 9:19:29 AM >

_____________________________

Danny "Remklep" Busch
Its better to beg for forgiveness, than to ask for permission.

(in reply to SMUGator)
       Post #: 434

RE: 1/6 Scale F4U Corsair Group Build - 6/18/2008 9:24:33 AM   
Remklep



Posts: 95
Joined: 12/10/2007
From: Haarlem, NETHERLANDS
Status: offline 		For the rudder control horn I will do the same, but I will make a pull-pull system.
So 2 control horns going to either side of the control-rod, with metal ball-links in between.

Tom,
Be sure you remove any traces of the flux after the part has cooled down.
Flux is very aggresive and any flux left on the part will cause severe corrosion in time.

Cheers,

< Message edited by Remklep -- 6/18/2008 9:33:47 AM >

_____________________________

Danny "Remklep" Busch
Its better to beg for forgiveness, than to ask for permission.

(in reply to Remklep)
       Post #: 435

RE: 1/6 Scale F4U Corsair Group Build - 6/18/2008 4:54:18 PM   
Chad Veich



Posts: 2743
Joined: 12/13/2001
From: Litchfield Park, AZ, USA
Status: offline 		NOTE TO TAIL BUILDERS:
Just a heads up guys, thanks to our Beta builder Richard, we have found a small issue with part E19. Somehow I managed to copy over the wrong E19 from an outdated CAD file and so it is about 3/16 of an inch too narrow in chord. It should be flush with the leading edge of the elevator core "EC" and butt up tight against E1 but it's too narrow. The fix is simply to add about 3/16" to the back edge of it. Sorry for the mix up! It will be corrected from now on. Thanks again to Richard for bringing this to my attention.

Also, Richard noticed that my vac formed tip is a bit too blunt compared to the full size. I noticed this as well and will be refining the shape of the plug to a more correct profile as soon as I can. I will get them as close as I can prior to offering them for sale. Cheers!

(in reply to Remklep)
       Post #: 436

RE: 1/6 Scale F4U Corsair Group Build - 6/18/2008 8:43:37 PM   
p 40


 

Posts: 67
Joined: 6/7/2008
From: BORGHETTO DI VARA LA SPEZIA, ITALY
Status: offline 		hi you are busy a photo of the particular one see me because I have not understood well the message of chad. hi

(in reply to Chad Veich)
       Post #: 437

RE: 1/6 Scale F4U Corsair Group Build - 6/18/2008 8:47:14 PM   
p 40


 

Posts: 67
Joined: 6/7/2008
From: BORGHETTO DI VARA LA SPEZIA, ITALY
Status: offline 		I have to add to the E19 4.733mm. correct?

(in reply to p 40)
       Post #: 438

RE: 1/6 Scale F4U Corsair Group Build - 6/18/2008 11:18:06 PM   
Chad Veich