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Tim's Skywriter Build

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McG 696906/03/2017 11:16:21
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2530 forum posts
977 photos

Hi Tim,

If you don't really need full strength reinforcement for the front fuselage as Lucas wrote, you can use hard floor varnish (Ronseal Diamond) instead of epoxy for your glass cloth.

It is about 35% lighter than epoxy and a lot easier to work with as it is water-based. When your glassing application is dry, you can fill the cloth wave with a few thin layers of varnish - with sanding in between - and you only need a little of primer on top for a smooth finish.

Great job you're doing, by the way.

Cheers

Chris

Tim Ballinger06/03/2017 12:43:09
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540 forum posts
227 photos

Thanks all, HK film seems to get your votes for the shrink side. Still undecided about the glass cloth front. I remember covering with nylon and dope and it was right pain . Chris's tip of using water based varnish sounds good if I go that route but it only seems worthwhile if I want to spend time detailing. Can't even decide on a colour scheme ATM.

Tim

Tim Ballinger06/03/2017 18:58:02
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540 forum posts
227 photos

Couldn't decide on anything but the sun came out so I went for a fly. smiley

Tim Ballinger08/03/2017 15:32:12
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540 forum posts
227 photos

Started on the lower wings. I think aesthetically since the wing is a flat bottom I prefer a flat bottom to the tips as well. Seems easy enough to take all the chamfer out on the top side. I plan to shorten the aileron by 6mm so as to provide a good te join..

Tim

img_0923.jpg

Lucas Hofman08/03/2017 19:27:24
596 forum posts
316 photos

tim, if you have not yet glued the tip you may consider fixing the end near the TE like this:

img_3690 (small).jpg

The triangular piece has a large glue area and is much stronger this way than just butt jointed to the TE. I made it from 3mm scrap balsa.

Cheers, Lucas

Tim Ballinger08/03/2017 20:11:41
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540 forum posts
227 photos

Like minds there Lucas . That's pretty much what I had in mind, plus a 6 mm the other side of the rib too. I think I shall make the actual tip thicker too by adding some strip.

Tim

Tim Ballinger09/03/2017 18:27:06
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540 forum posts
227 photos

img_0924.jpgHere is how I eventually did the tip. Perhaps 6mm wood was overkill but it feels really solid (and very flat underneath). Now for the starboard tip.

Tim Ballinger12/03/2017 19:04:09
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540 forum posts
227 photos

Lower wing pretty complete save shaping LE , sanding tips and general sanding.

img_0382.jpg

Tim Ballinger12/03/2017 19:06:08
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540 forum posts
227 photos

Wing bolts in place.

img_0381.jpg

img_0380.jpg

Tim Ballinger12/03/2017 19:07:12
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540 forum posts
227 photos

And before a glass of wine, another bit of bench flying !

img_0379.jpg

Dwain Dibley.12/03/2017 19:16:39
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1267 forum posts
1265 photos

Very nice Tim....wink

D.D.

Tim Ballinger12/03/2017 19:58:52
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540 forum posts
227 photos

Thank you Dwain, always good to get encouragement.

Tim

Lucas Hofman12/03/2017 20:03:59
596 forum posts
316 photos

Leading the pack now Tim!. What is the hole in the center for? just for getting the servo wires out?

Have you already decided about the colour scheme?

Cheers, Lucas

Martin Dance 112/03/2017 21:49:37
195 forum posts
33 photos

That's looking very neat Tim. As for colour scheme I had pretty well settled on orange and white, slight snag other than Oracover and solarfilm white is not be had in Toughlon or Easycoat. so much for the thought that people aren't building! My progress has slowed, sanded the tail group and hinged elevators and rudder and sorted out the closed loop for the rudder and the tube for the elevator, all a bit tight at the rear!

Weather is improving so the allotment gets priority next week.

Tim Ballinger12/03/2017 22:12:42
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540 forum posts
227 photos

Old habits I think Lucas; it always used to be a hole for the aileron servo which then used pushrods and bell cranks to drive the ailerons. So now rather than just a hole i still leave a box. Might sheet it might not.

Just enjoying myself really.

I have looked at a few biplane colour schemes and I am leaning to a version of the iconic Great Lakes two tone fan across the wings if you know what i mean. Probably red and blue.

You not a fan of the HK film then Martin?

Tim

Martin Dance 113/03/2017 07:49:01
195 forum posts
33 photos

My thoughts about a fan/ sunburst across the top wing was my first thought too Tim. I thought orange and white for two reasons , I have some orange and white chequerboard Toughlon left over from another model for underneath the lower wing, The second reason for orange is to put to bed a long held belief that orange is an unlucky colour for me. OK I'm not really superstitious.

As for HK film I went to their website the other evening and it wasn't playing nice. I'l try again today.

Martin

Lucas Hofman13/03/2017 07:55:39
596 forum posts
316 photos

Take a look at the jacinth colour Tim. It will do a lovely fan, and very well visible too in the air. You can see how it looks on a model on my Ballerina thread.

The HK website plays well in the Chrome browser. And I always pay using Paypall.

Lucas

Martin Dance 113/03/2017 08:38:46
195 forum posts
33 photos

Hi Tim and Lucas, I thought the Jacinth colour would be nice. Just been to the HK website White film HK warehouse, Jacinth EU warehouse Need some pilots 1. UK warehouse, 2. HK warehouse. total value about £25, shipping just over £30! I guess i'll wait!

Tim Ballinger13/03/2017 08:48:26
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540 forum posts
227 photos

Martin/Lucas,

Funnily enough I looked at Jacinth last week and backed off ordering for the same reason. I may give in eventually!

Tim

Lucas Hofman13/03/2017 08:51:34
596 forum posts
316 photos

It is nasty that shipping can pay out so badly. Are not both colours available in the UK warehouse? Or is UK local postage so expensive?

Lucas

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