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Andy Edmead Build Blog Sabre

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Andrew Edmead09/02/2020 19:44:10
57 forum posts
50 photos

How much planking do you have to do before taking it of the building board?

Phil Cooke09/02/2020 19:55:59
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2551 forum posts
1796 photos

I'd try and get at least half of it done personally Andy, you need to leave an inch along the top and bottom to aid with joining/clamping the fuselgae halves together. In truth, I left more than that especially on the bottom face.

McG 696909/02/2020 20:02:56
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3177 forum posts
1199 photos

Hi Andy,

Regarding the amount of planks, the general consensus is to start planking at the datum line.

Then you can go up one plank and go down one as well until you're about 25mm (1 inch) from the building board.

I would suggest to bevel each plank on one side to get a gap-free fit between the planks when glued to the formers.

Hope this helps.

Chees

Chris

Edit > well, Phil beated me to it...  yes

 

 

Edited By McG 6969 on 09/02/2020 20:05:17

Andrew Edmead09/02/2020 21:50:26
57 forum posts
50 photos

Thanks Chris and Phil. I’m making good progress but my building board is fixed so I can’t turn it around and it’s getting difficult to plank the side away from me. I’ve been using cyno at the end of the fuz to set the plank in place then the aliphatic for the rest. I reckon I’ve spent about 6 hours on one half already. Gonna be some man hours in it when I’ve done. I’ve done at least 50 percent of the planking I think.

I feel like if I had to do this build again it would be much better!

Martin Gay09/02/2020 22:17:40
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387 forum posts
255 photos

Andy,

My building board is also fixed.

I plank as much as I can and then unpin the fuselage half before turning it around to plank the remaining section.

As long as at least half of the fuselage side is planked it is unlikely to twist when you turn it around.

Martin.

Andrew Edmead09/02/2020 22:29:11
57 forum posts
50 photos

Thanks Martin. I will hope for the best. I hope it doesn’t twist.

Andrew Edmead16/02/2020 21:12:53
57 forum posts
50 photos

So I’ve started the other side of my the fuz now. I made the stringers longer , this helped to keep the planks pinned down. I assembled the fuz last night and started planking today.

I hopefully will be ready to join the two halves soon. Still a lot of work to do.

Pics attached, the use of pins will please those with an ocd about using the same coloured pins.

Fuz2

Planking

Andrew Edmead23/02/2020 19:29:01
57 forum posts
50 photos

Hi, what weight glass should I buy and how much do you think is needed to finish a sabre?

Andy

McG 696923/02/2020 20:55:05
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3177 forum posts
1199 photos

Hi Andy,

As for the weight of your glass, I would tend to go with 25g/m².

Regarding the amount needed, don't forget the few inches needed to 'overhang' your parts for a decent result.

I didn't measure it yet but I would go for at least 2m² if you're glassing it entirely.

So I would say 2,5m² for 'safety' reasons. As with balsa, you never have too much at hand...

But I would wait for one of the glass covering Gurus to show up...

Cheers

Chris

Andrew Edmead23/02/2020 21:02:47
57 forum posts
50 photos

Thanks Chris, I have gone for the lightest one I could find as it was mentioned you could use film if you wanted.

I went for a 2m pack so hopefully that will do me.

I'm also following your blog closely, great stuff, well done.

Andy

Andrew Edmead30/03/2020 22:34:28
57 forum posts
50 photos

f1854ca6-bb1d-41ee-97d0-d0bfdf836e8d.jpegI’ve made a little more progress now as my workplace has closed for now.

i sanded a little of the fuz, indeed they do come up well.

I have Been working on elevator and actuator.

I cut the Slots for the piano wire and checked the fit before glueing.

 

I managed to get one of the sides Sanded and shaped with reasonable success.

 

i Installed the bell crank, notice in my pictures the grey spacers. The spacers where left over from electric props and where a perfect fit.

 

still a lot of worke to do 😢

 

 

Edited By Andrew Edmead on 30/03/2020 22:37:28

Edited By Andrew Edmead on 30/03/2020 22:41:44

Andrew Edmead30/03/2020 22:45:45
57 forum posts
50 photos

cb754a6f-b0b4-4c12-9a9e-94629d459105.jpegd02579df-e616-455b-8f38-87b393697552.jpeg320d567d-54c7-4d51-a806-460e88a091d3.jpeg

Andrew Edmead07/04/2020 19:01:21
57 forum posts
50 photos

I’m stuck a little on the fillets that go either side of the fin. How much do they actually splay out as on the plan it looks

a lot but on various build blogs it seems to vary.

Also is there a dimension (width) for the rectangular bit that sits on top of the exhaust at its extreme?

Thanks

Andy

dirk tinck07/04/2020 20:04:08
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590 forum posts
822 photos

I have 40 mm on top of the exhaust and 45 at the front Andrew

Andrew Edmead07/04/2020 21:07:05
57 forum posts
50 photos

Thanks Dirk, I will go for that. Very helpful 👍🏻
I’m getting closer to the glassing.
There is light at the end of the tunnel!

Phil Cooke07/04/2020 23:03:18
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2551 forum posts
1796 photos

Mine are splayed out quite a bit more than that - I measure 42mm across the flat top right at the back over the exhaust, and 70mm wide between the front most tips of the tailplane cheeks.

Andrew Edmead07/04/2020 23:47:58
57 forum posts
50 photos

To be honest the way I read the plan was that the

rear end of the cheeks where close to the fin. Leaving

a bigger gap at the front. In the end I used my judgment

and went for what just looked right. Got to make the exhaust tomorrow.

Andrew Edmead11/04/2020 12:41:24
57 forum posts
50 photos

f477789d-7073-416a-885c-84f0e331ba7e.jpeg5eb717ad-37fd-4bfc-ade6-7c285b78357a.jpegIve found the backend very difficult especially with the absence of some permagrit files.
I ended up with all my planking flush with f10. So I had to make a complete exhaust.
I simply glued together some hard balsa block and stuck it to f10..

Then I shaped it to a rough profile, again most people are all doing it slightly different.

so after looking at pictures and various blogs I finally got somewhere close.
As for the the inner round hole, being an electrician I attacked it with my 51mm

metal hole saw. It nearly ended in tears so I don’t condone this method but it worked for

me.

Andrew Edmead12/04/2020 18:48:40
57 forum posts
50 photos

I’ve done some sanding and filling today, I’m reasonably happy with it.

The elevator was sealed and sander then given a layer off glass cloth.

seemed to go on really well. I’m on with the cockpit and canopy now.
f28108c9-c723-4928-b57a-96267d51c0e6.jpeg

59e7c8fc-d29f-4f3a-9923-289b52755c36.jpeg

38315e13-1cdd-424e-a5da-7dfc14ec0470.jpeg

Andy Meade12/04/2020 19:31:30
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2764 forum posts
717 photos

That's all looking rather neat and tidy Andy, great work. Keep it up!

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