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John's Dawn Flyer Slimline Build

John's Dawn Flyer with Depron

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Devcon107/02/2014 16:49:22
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1345 forum posts
475 photos

Hi All,

Building now under way, my objective is to use as much material as I can from stock, now seeing as I had some sheets of Depron I've decided to try and build light, perfect for those flat calm evenings we're going to get.

I plan to try and incorporate a full depth open cockpit. by fiddling around with the wing structure by moving the lower rear spar forward a bit.

Wing ribs will be Depron and the wings then skinned with the same.

Motor is a Overlander T2836 1120 Kv

Servos New Power 11gm Metal gear

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Basic kit of parts

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I've opted for an alloy torque tube elevator joiner

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A bit of deviation, I've set the undercarriage bearer lengthways to suit some bearers I had in stock.

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Closer look at the formers in Depron and F2 with some material removed.

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Experimenting with a Depron rib.

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Motor mount

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Stab frame minus a bit of balsa.

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Now because I had no 6mm sheet I laminated the sides from 3mm and 1mm, this has allowed me to raise outer skin up the wing bottom so I'll let the wing seat into the small rebate that's been formed.

I know this won't be a standard plan build but I'm following Lindsay's notes with the article "but making it your own is half the fun of a model like this" couldn't agree more, it's such a versatile design..

Thanks for looking

John

Kevin Fairgrieve07/02/2014 17:47:05
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1562 forum posts
2834 photos

Nice start.

Something different from the normal.

Watching with interest.

Kev

Devcon107/02/2014 22:22:38
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1345 forum posts
475 photos

Tub almost done, I've added a bit more air.

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Just need to add undercarriage bearers and wing seat. I'll start on the rear end over the weekend.

Devcon107/02/2014 23:26:12
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1345 forum posts
475 photos

My little motor does look a little lost in there but I'm sure it will be adequate.

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I'll put a fillet between the bearers and fuselage sides, the undercarriage legs will sit in a groove with the lower sheeting being fitted to make them sit flush with the sheeting..

Regards

John

.

Devcon107/02/2014 23:29:07
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1345 forum posts
475 photos

Ooops, forgot to put the other photos on.

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Devcon108/02/2014 11:47:08
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1345 forum posts
475 photos

Top longerons set out and keel plate fitted.

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There does seem to be a slight difference between the actual width versus plan width, I seem to recall somebody mentioning this previously but no issues.

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I plan to use some balsa dowel for the lower longeron.

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Regards

John

Devcon108/02/2014 22:44:53
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1345 forum posts
475 photos

Rear end done and turtle decking drying overnight.

Because I used thinner fuz sides I overlapped the decking by chamfering the sides a little. I suspect this is where I lost a little width against the plan, had I had my thinking head on I would have resized the formers.. dooohhh...

Thought about doing the turtle deck in Depron but chickened out but I have found some nylon to give the tub a "vintage" look hopefully.

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There is a fillet in there to give a decent joint.

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Look forward to a bit of triming tomorrow because I won't be going flying..

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Same for the rear.

Regards

John

Devcon108/02/2014 22:56:13
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1345 forum posts
475 photos

Found these at my local model shop months ago and bought them thinking they'd come in handy, well,...

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Cheers

Tony Bennett09/02/2014 09:13:51
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5037 forum posts
129 photos

looks to be an interesting build sir.

i like the louvers.

Devcon109/02/2014 14:42:07
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1345 forum posts
475 photos

Wing seat and wing bolt rail in and decking tidied up.

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To keep the full depth cockpit I've set the wing bolts back and will simply tap two 4mm threads into the bearer as per the test piece

Regards

John

Devcon109/02/2014 14:53:19
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1345 forum posts
475 photos

I think this pilot is slightly too big, I think I'll save him for an enlarged Dawn Flyer at a later date.

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Regards

John

Stevo09/02/2014 14:53:42
2699 forum posts
419 photos

Intrigued and following with interest!

Devcon109/02/2014 16:37:16
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1345 forum posts
475 photos

Thanks go to BEB for this one.

1.99 at Halfords.

John

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Devcon109/02/2014 22:13:40
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1345 forum posts
475 photos

Stab and Elevator all glued up.

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Biggles' Elder Brother - Moderator09/02/2014 22:50:23
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Moderator
15748 forum posts
1460 photos

I love this. A great thing about the mass build is the way it provides a powerful demonstration of the fact that the plan can be just a "starting point"! Great adaptions here John.

With a bit of luck we'll end up with loads of great DF's - no two exactly the same - but all built from the same plan!

BEB

Devcon110/02/2014 21:30:36
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1345 forum posts
475 photos

Well the undercarriage may well be a "one hit wonder" but I've tried to think of the loads/wheel size/weight and flying style so I'll give it a go in keeping with my weight reduction ethic.

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I had to bend the wire around the blocks.

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Before sheeting.

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some sample sheeting pinned in place, I may go thicker.

Regards

John

Devcon110/02/2014 21:47:32
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1345 forum posts
475 photos

Kevin, Stevo, Tony, BEB thanks for your comments any thoughts and comments appreciated.

Forgot to add these pics of the wheels.

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These are the standard Flair (83mm I think) but I shall put them on the scales and see what I can loose from the hubs.

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I've started on the tyres, I've flipped them inside out and have started thinning them out with a sharp scalpel.

This may take some time so I might keep a lookout for some lightweight oprions.

Regards

John

Stevo10/02/2014 22:11:59
2699 forum posts
419 photos
Yes those Flair wheels can be a bit heavy. You could turn up some balsa or liteply hubs o a small lathe.. and use foam tyres? Ive got a small proxxon wood lathe if you fancy giving me a challenge!!!
Vecchio Austriaco11/02/2014 07:53:36
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1498 forum posts
707 photos

be carefull by thinning the wheels out - they may lose stability if the rubber is too thin - means they might look like you have a flat tyre ....

VA

Devcon111/02/2014 09:40:28
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1345 forum posts
475 photos

Hi Stevo,

Tthanks for your offer I may take you up on it but you have given me an idea, I'm going to try and mount the two parts of the wheel in a drill and and see if I can scrape some of the material of the inside, I then want to try and turn them into spoked wheels with a little dremel work.

Hi Vecchio,

You're right so I'll go easy and see what the result is, If they go a bit wobbly I could fill the inside with some light foam.

I've set myself a target of a 50% weight reduction for the set.

Regards

John

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