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Design & Build Dornier Do 24

A bit of a challenge

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Robert Parker15/12/2017 16:01:20
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916 forum posts
1175 photos

Thank you both.

I have now finished the drawings and hope to get them copied tomorrow or early next week.

dsc03337.jpg

Finally got round to doing the wing ribs.

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I think I have ordered a bit more than I need but then it gives me choice.

I have got a little repair job todo before I start the Dornier, my Cat lost a couple of it's lives recently

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Should not take too long I've be meaning to do it for a few weeks, now it's on the bench and I want to start the Dornier, the wings had very little damage despite cartwheeling in.

That's all for now.

Regards

Robert

Martian16/12/2017 11:05:01
2255 forum posts
1091 photos

Looking forward to your build and Lucy to the cat 🐱 now with 8 lives

Robert Parker01/01/2018 16:52:11
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916 forum posts
1175 photos

Hi All,

And a Happy New Year to you all,

The Catalina is off the bench just needing some final finishing and a bit of paint.

I have made a start on the Dornier over the past day or two, cutting out all of the parts from balsa and ply it took longer than I thought but this afternoon I finished cutting them all out and now I have a kit ready to start building.

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Wings and nacelle parts, I'll cut out the flaps and ailerons later so I don't loose them

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Fuselage components including sponsons

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Finally the tail group, I decided to make the fins solid and the rudders being built up. This is where I'll be starting hopefully tomorrow.

That's all for now

Regards

Robert

Tony Bennett01/01/2018 18:09:38
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5080 forum posts
129 photos

lots of nice parts young sir.

i think your build is one of the few reasons i bother to come on here these days.

keep up the great work Robert.

Tony B

Robert Parker01/01/2018 18:34:07
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916 forum posts
1175 photos

Thank you Tony,

There is certainly a lot of them and I think I'm in for a challenging time ahead.

Regards

Robert

McG 696901/01/2018 18:41:48
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2710 forum posts
1016 photos

Hello Robert,

I think there will be a lot of us closely following your "challenging time", sir.

Subscribed already.

Cheers

Chris

Robert Parker04/01/2018 17:18:57
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916 forum posts
1175 photos

Hi All,

Got the tail group sorted after a bit of a slow start where I was doubting my drawing, once I got going it came along nicely.

dsc03634.jpg I had to open out a couple of notches for the spars

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The fin and rudders went well

dsc03636.jpg

Took my time with the rudder linkage, the servo is mounted below the underside of the wing. I will put an access hatch above later

dsc03637.jpg

Close up of the Turnigy servo. I will use a paired back electrical connector block to join the push rods and when happy solder them together

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The brass tube squashed one end and drilled to suit the clevis

dsc03639.jpg

Pinned in place and loose hinges to see that it works and that it did with a small amount of hole enlargement on the last rib.

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Rudder with horn in place

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Underside

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Close up of the servo mounting

That's as far as I have got so far.

Next, is to fit the remaining push rod and fit the top sheeting round the leading edge and glue the fins on

That's all for now

Regards

Robert

Tony Bennett04/01/2018 17:26:31
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5080 forum posts
129 photos

very clever sir.

very clever indeed.

thank you

Tony B

Robert Parker11/01/2018 21:21:33
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916 forum posts
1175 photos

Hi All,

Just a quick update,

Rudder linkages completed, tailplane top sheeted, and profiled, fins glued in position and elevators hinged and sheeted.

dsc03841.jpg

Rudders pinned in position whilst push rods finalised.

dsc03842.jpg

Top sheeting done (other side) fins glued in position. It was a great help with the back edges of the fins and tailplane lining up with each other. I drew a line for the underside of the tailplane and marked the centres of the fins and squared off the tailplane line so they are all square with each other and the bench.

dsc03843.jpg

Top view.

Next I will finish off the elevators and give the whole assembly a coat of sanding sealer ans the wood is bruising easily.

That's all for now

Regards

Robert

McG 696911/01/2018 21:39:22
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2710 forum posts
1016 photos

Really impressive build, Robert.

I'm very chuffed I've subscribed. So much to learn here for an apprentice.

Keep up. yes

Cheers

Chris

Robert Parker11/01/2018 21:44:42
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916 forum posts
1175 photos

Hi Chris,

The learning never stops, just keep building and flying

Regards

Robert

Robert Parker15/01/2018 19:18:55
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916 forum posts
1175 photos

Hi All,

I have made a tentative start on the fuselage and all started well until I started placing the formers in position. Somehow I have managed to make some them too short only 3mm or so and I have re-made a part plus I feel that I need to have an additional former just in front of the tailplane as the transition form ovalish to square does not seem to work when I tried to bend a scrap piece of 1/16th let alone a piece of 3/32nd.

All I have done is dry fitted so far so alterations can easily be done, so this is challenge no1.

Overall I am pleased with the look. The 1/4 sq balsa is just placed and the formers will be notched to accommodate it, I will also be adding another in the forward section and join the two.

dsc03844.jpg

Plan laid out ready to start.

dsc03845.jpg

Most of the front formers turned out too short, I'll have to re-make those as well as......

dsc03846.jpg

....add a new former as indicated by the pen and re-made K6(top right)

dsc03847.jpg

Same position on the model perhaps not showing in to much detail the change from curvature to straight below the tailplane and then going to a curve on the underside.

This will slow me down a little while I draw a new former and re-make some others, all part of the fun.

That's all for now

Regards

Robert

Martian15/01/2018 20:44:32
2255 forum posts
1091 photos

Cripes i'm getting a headache just following you

Concorde Speedbird15/01/2018 22:53:15
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2719 forum posts
631 photos

That is an impressive bit of design and build work.

Robert Parker16/01/2018 18:18:18
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916 forum posts
1175 photos

Thank you CS, it is my most ambitious project so far, pushing to my limits of design and building but hopefully not the flying.

Regards

Robert

Timo Starkloff18/01/2018 19:40:08
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352 forum posts
787 photos

Do you plan to build the wing with some washout, Robert? Wing size is huge, the tail with double rudder very effective and you don't have a Clark Y airfoil. If the weight is fine and you use washout to prevent a stall at the wing tips, it should be a nice flier.

Robert Parker19/01/2018 19:21:23
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916 forum posts
1175 photos

Hi Timo,

Yes I am planning some washout on the wings when I get to build them.

Regards

Robert

Erfolg19/01/2018 20:42:23
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11429 forum posts
1216 photos

I considered building a Dornier flying boat, as they seem to be the dogs thingies to look at.

It was one with a parallel chord wing, and a push me pull you engine arrangement. The body was to be Blue Foam.

Then you come along and show how it should be done.angrycrying 2

It is greatangry 2

Erfolg19/01/2018 20:42:38
avatar
11429 forum posts
1216 photos

I considered building a Dornier flying boat, as they seem to be the dogs thingies to look at.

It was one with a parallel chord wing, and a push me pull you engine arrangement. The body was to be Blue Foam.

Then you come along and show how it should be done.angrycrying 2

It is greatangry 2

Erfolg19/01/2018 20:43:10
avatar
11429 forum posts
1216 photos

I considered building a Dornier flying boat, as they seem to be the dogs thingies to look at.

It was one with a parallel chord wing, and a push me pull you engine arrangement. The body was to be Blue Foam.

Then you come along and show how it should be done.angrycrying 2

It is greatangry 2

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