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Chris McG F-86 Sabre Dog build blog

my first attempt to a soaring bird for the PSSA MB 2020?

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McG 696927/06/2020 11:50:18
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3305 forum posts
1257 photos

Many thanks to all of you for commenting, gents.

Regarding those “questions”, the ‘hard’ part has still to come, Steve. Wait till I start asking them concerning the aileron rods... Poor Phil…

No worries, Martin. Regularly, I don’t have the required dimensions at hand in the shed, but I love to laminate wooden bits together. Besides by laminating, the end piece gets a lot stronger for nearly no weight penalty.

Replacing 4,76mm by 3/16” for the dowel plate wouldn’t be very helpful in this case for the simple reason that Imperial sizes are unavailable here in BE…

Yep, there is a conversion table on Gordon’s drawing but I also have a simple standalone - no install needed - piece of software with a myriad of units for conversion. I transfer it from ol’ PCs to new ones since about twenty years now… Fantastic little tool. Here’s a screenshot of it:

Aviabox Converter

Nearly the same here in Zaventem, Dirk. We had 30°C in La Grotte yesterday.

It’s a tiny bit less today, but Iris convinced me to have a break as, being a toy-hobby, it must at least remain ‘enjoyable’.

Cheers and stay cool, gents

Chris

McG 696927/06/2020 19:58:36
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3305 forum posts
1257 photos

... oops... being a bit uneducated - but officially I'll blame the heat wave - I forgot to mention that if somebody is interested in the 'Converter'-software, just send me a PM with your e-mail address and I'll forward the app...

Cheers

Chris

McG 696929/06/2020 18:17:14
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3305 forum posts
1257 photos

Hi there,

A lazy WE followed by... a lazy Monday... blush

At least at La Grotte, I took a lot of measures from the wing and fuse last week which enabled me to have a decent start today at the technical stencils for the Dog.

As there are really too many of them, I decided to reproduce only the most 'visually' important ones.

... and still a few (many?) hours left in Publisher to get those I want to keep, created at 1:10 scale...

On a side note, looking at the total absence of PMs, nobody seems interested in having that piece of 'Convert' software. So it be... wink

Hakuna matata

Chris

BRU - BE / CTR App Control

McG 696930/06/2020 21:43:56
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3305 forum posts
1257 photos

Hi again,

Not another lazy day at all, but stupidly enough, I forgot the cam in La Grotte. frown

Honest, I will try to compensate tomorrow... angel

Apologies to Dwain, the QC Managers, et all... blush

Cheers & stay safe, gents

Chris

Martian30/06/2020 21:56:48
2540 forum posts
1169 photos

Good to see you working away making steady progress ,stay safe

McG 696901/07/2020 10:09:39
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3305 forum posts
1257 photos

Thanks for your motivating comment, Martian.

My pace has been on the slow side lately, but weather allowing it might get up to increased speed soon. At least, let"s hope for that.

Cheers and stay safe as well, young man

Chris

Dwain Dibley.01/07/2020 13:03:09
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1521 forum posts
1506 photos

Withdrawal symptoms setting in at Dibley Towers................I need my Chris McG F-86 Sabre Dog build blog Pic fix.

crying 2

D.D.

McG 696901/07/2020 20:19:23
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3305 forum posts
1257 photos

Hi everyone,

Not an very fast progress I must admit, but at least the wing sheeting glue was very well cured. angel

After cutting the ‘overhang’ bits of the top sheeting away, I had some secure sanding of the LE, TE and R13 tip ribs.

Especially to try to cure Dwain’s “withdrawal symptoms”, here are some pics of the result... wink

1324_overhang_sanding01_900.jpg

1329_overhang_sanding02_900.jpg

1330_overhang_sanding03_900.jpg

Thanks again to Gordon & Martin for that splendid wing jig provision. I still don’t know how I could have managed it without…

Hakuna matata & keep safe, gents

Chris

BRU - BE / CTR Dibley Manor Control

Dwain Dibley.01/07/2020 20:38:55
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1521 forum posts
1506 photos

That's better.....smile p

Excellent super neat work ,as always..

D.D.

McG 696902/07/2020 13:08:58
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3305 forum posts
1257 photos

Thanks for your kind comment, Dwain. yes

It was my first balsa wing sheeting and I was a bit reluctant to it. But in the end it went quite smoothly and now I'm very pleased with it. smiley

Cheers & keep safe gents

Chris

McG 696902/07/2020 19:59:00
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3305 forum posts
1257 photos

Hello there,

Mixed jobs at La Grotte, but very compliant with the current Time Management Plan. wink

Both the LEs went on as they were laminated/tapered previously.

1335_leadingedge01_900.jpg

With the Aliphatic curing, I went on with the fuse to have a sanding session outdoors.

Perfect weather for it, but after more than an hour of sanding, I realized I was still ‘nowhere’…

Sjeesh… I do realize of course that my Dog is ‘fatter’ and ‘longer’ than a standard F-86, but this will be quite a longish job to handle… frown

Hakuna matata & keep safe, all

Chris

BRU - BE / CTR Fuse Sanding Control

Phil Cooke02/07/2020 21:23:02
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2619 forum posts
1836 photos

Hi Chris,

Yes Im at the same stage with my fuselage - its complete now and just in need of final sanding all over. I've taken down all the big steps in between my planking, and now need to make the curved card/grit aid to finish the job. It seems to take ages!?

I've got a couple of 'starved horse' depressions too I think over the wing bay which might need some filler to maintain the lines... crying 2

dirk tinck02/07/2020 23:47:19
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644 forum posts
893 photos

I think it's nearly impossible to avoid the starving horse syndrom building a ribbed wing. i wouldn't try to hide it with filler eather , it will be a considerable weight increase i guess ...

McG 696903/07/2020 12:37:23
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3305 forum posts
1257 photos

Thank you for commenting, Phil & Dirk.

I still have the fin fairings to install, but I need the shape of the turbine exhaust first hence the fuse sanding in priority.

... and it just seem to take sóó much time to get an acceptable finish.

The curved cardboard+grit combo really is a nice tool, Phil... but it still needs some 'sanding energy'. wink

Some more sanding coming closer, I guess...

Cheers & keep safe both

Chris

McG 696903/07/2020 19:37:29
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3305 forum posts
1257 photos

Hello again,

Due to the weather, some plan changes here in La Grotte, converting the fuse sanding to some wing... sanding... frown

I can handle small areas sanding inside and started with both LEs.

1338_leading_edgesanding01_900.jpg

Once again, using the magical masking tape trick to protect the sheeting.

The top of the red line is the central point of the airfoil chord and easy to sand down to just reach it keeping the correct curve.

1344_leading_edgesanding02_900.jpg

Later on, the wing will be turned upside down and the LE profile sanded till the red line is only 0,5mm thick. Hopefully… wink

Hakuna matata & keep alert, gents

Chris

BRU - BE / CTR Sanding Again Control

McG 696905/07/2020 18:36:45
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3305 forum posts
1257 photos

Hi there,

A different WE this one as it was finally the start of the F1 season. cool

I had some 'short' work sessions though with the LE further sanding yesterday and a 'hard' one with the dowel ply plate today before the broadcast. angel

Pics for Dibley Manor to follow shortly... yes

Hakuna matata & keep prudent, gents

Chris

BRU - BE / CTR Sanding Again #2 Control

Dwain Dibley.05/07/2020 18:43:49
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1521 forum posts
1506 photos

I am back at work from tomorrow so I will need some thing to cheer me up in the evenings....

I will be waiting patiently.......

D.D.

McG 696906/07/2020 13:15:45
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3305 forum posts
1257 photos

... poor Dwain,

I'll try to give your smile back with a few pics then... angel

Cheers

Chris

McG 696906/07/2020 19:46:41
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3305 forum posts
1257 photos

Hi there,

Quite a glue/sanding progress this WE despite watching the F1 qualis & race.

In fact, Iris’s Time Mgt Plan worked great (again). yes

First job was to finish the LE sanding of both wing halves and gluing the dowel front plate with epoxy afterwards.

1347_wing_dowelplate01_900.jpg

1352_wing_dowelplate02_900.jpg

1354_wing_dowelplate03_900.jpg

1360_wing_dowelplate04_900.jpg

After sanding down the ply plate, Gaston and I were both quite satisfied with the job.

Albeit, I must add that I discovered that sanding laminated - 8 layers in total - top graded aero ply is a LOT harder than the hardest balsa I ever used… surprise

Is this OK after your first day at work, Dwain? …

Hakuna matata & stay safe, gents

Chris

BRU - BE / CTR Aero Ply Sanding Control

Dwain Dibley.06/07/2020 20:42:15
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1521 forum posts
1506 photos

Thank you Chris, that was way better than the rat infested room I had to clear out today. Rat Poop or finely sanded wood ?? No contest Matey. kiss

Lovely and neat and as sweet as a nut.

D.D.

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