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RE: Black Magic VF3 Build Thread - 11/12/2007 5:29:16 AM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		Fuse bottom cross bracing


Once your block doublers have set and you can flip the plane over you can install the 1/4" balsa cross bracing. Use nice lite stock and a fine razor saw. Takes about 5 mins to do this step. I first use a good drop of thin ca and follow up with a good drop of thick ca at each joint.

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< Message edited by handglider -- 11/12/2007 5:33:33 AM >

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RE: Black Magic VF3 Build Thread - 11/12/2007 5:43:43 AM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		Fuse top bracing

Okay once the bottom is braced. Flip her back over and install the top cross bracing. Epoxy the stab adjuster rod in place and install the fin plate at the rear of the fuse.

Note - if you plan on installing a deps system, install it before you add the top cross bracing. I am about to install a deps in the twin vf3 and I'll post pics of that. I am going to use the set up that Mike uses on his deps set ups.

I'll also be using the Bondable Teflon Sheathing for the deps instead of the material central provides in the kit. I used this stuff on my v2 build and it works great. It bonds so well you just ca it in place and you can't pull it off without breaking the former.


You can get the Bondable Teflon Sheathing from - http://www.cstsales.com




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< Message edited by handglider -- 11/12/2007 3:51:51 PM >

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RE: Black Magic VF3 Build Thread - 11/12/2007 5:50:51 AM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		Firewall doubler and brace.

Epoxy in the firewall doubler former FB1 ( that thing with the four holes in it).

Trail fit the carbon composite firewall brace.

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< Message edited by handglider -- 11/12/2007 6:18:05 PM >

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RE: Black Magic VF3 Build Thread - 11/12/2007 5:55:37 AM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		Top turtle deck.

Install the top sheeted core - remember I sheeted these babies like 3 months ago

Carefully finish sand the edges of the core and position it per the plans, I use a very thin coat of gorilla glue or 30 min epoxy to attach the turtle deck. Do not install the lower fuse core till after you do your wing and stab alignments.

The turtle deck needs to sit inside the fuse sides by about 1/32" - to be sanded with a slight curve when finished.

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< Message edited by handglider -- 11/12/2007 7:18:33 PM >

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RE: Black Magic VF3 Build Thread - 11/12/2007 6:04:11 AM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		Fuse top etc....

Okay we are making good progress here.....

Once the top turtle deck core has cured install the front carbon turtle deck former, I used a thin layer of 5 min epoxy.

Now install F2T - the top former above F2 - Use a piece of 1/4 stock and lean it forward so it's 6 5/8" from the firewall. Epoxy in place.

Install F3T and F4T with epoxy.

Cut and fit the top side 1/4 stringers that run from the firewall , across F2 - F3T - F4T and then into the top turtle deck. Cut a slot to recess the rear 1 1/2 or so into the top turtle deck. Once in place you need to cap it with a bit of 1/16" sheeting wood.



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< Message edited by handglider -- 11/12/2007 4:23:15 PM >

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RE: Black Magic VF3 Build Thread - 11/12/2007 7:40:35 PM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		Okay now finish the forward 1/4 stringers and your ready to add the upper 1/8" fuse sides. You want to make sure your upper stringers are nice and straight. Use the canopy base to check your fit.

At this point your ready to sheet the forward turtle deck behind the cowl (between F1 and F2). there are basiclly two methods here.

Cut 1/2 and 1/4 wide planks from semi-hard 1/8" stock and plank it up - or - Shape 1/8" sheet wood by wetting and forming it to a coffee can or some other tube and trim to fit.

Either way you need to make sure you have strong wood and a good glue bond - and if you use the sheet wood method - watch for sags or flat spots in the wood.

Another thing you can do is add some 2 oz carbon cloth or kevlar to the underside of the sheeting/planking - might be good if you running a YS....

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< Message edited by handglider -- 11/12/2007 7:48:53 PM >

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RE: Black Magic VF3 Build Thread - 11/12/2007 8:00:36 PM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		I don't seem to have any pics of the planking or sheeting. I'll update this page when I do the next plane.

But here are pics of the completed fuse, at this point you are ready to install wing adjusters and do you final wing and stab alignments.

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< Message edited by handglider -- 11/12/2007 8:02:34 PM >

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RE: Black Magic VF3 Build Thread - 11/12/2007 8:19:46 PM   
Scott Smith



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Here you go Dean, I just happen to be on that step this morning! I have my doubts about how well this will sand out though. I kind of wish I had wet formed the sheeting in a foam mold (exactly like the turtle decks, just no glue.) When the wood dries and comes out of the foam, it holds the shape perfectly. Then it could be glued to the stringers dry.


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RE: Black Magic VF3 Build Thread - 11/12/2007 8:43:04 PM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		Hey Scott...

It looks good to me, remember you will be filling that area - apply the filler before you do your finish sanding - use that "SuperFill" filler from aircraft spruce - Mike turned me on to that stuff and it's really good.

I like the strip planks myself - I've seen the wood sag a lot when you do the sheeting. You can use stiffer wood too.

< Message edited by handglider -- 11/12/2007 8:52:30 PM >

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RE: Black Magic VF3 Build Thread - 11/12/2007 8:49:10 PM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		here is 2 oz carbon on the underside of the sheeting/planking.....

You could lay the carbon or kevlar across the entire area if your worried about sanding the planking too thin.

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RE: Black Magic VF3 Build Thread - 11/12/2007 8:59:16 PM   
handglider



Posts: 692
Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online 		Okay - I've gotten a little ahead of myself.

I need to finish capping my wing and stab cores so I can do my alignments. I also need to sheet the fin for this plane.

If you are doing your own sheeting - go over to the E-pattern forum and check the Black Magic E-Build thread for Mikes sheeting method. I'll outline the the work I'll be doing on the sheeted cores over the next couple of nights.



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RE: Black Magic VF3 Build Thread - 11/12/2007 9:29:38 PM   
handglider



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Joined: 3/14/2005
From: Hotlanta, GA, USA
Status: online

Here is a shot of my completed #1 Vf3 - I am really going to try my best to tag team and start the finishing process on my #1 bird asap...... It would be too cool to paint both of my personal VF3's at the same time.

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RE: Black Magic VF3 Build Thread -