By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by CML

Ballerina by EarlyBird

All Topics | Latest Posts

Search for:  in Thread Title in  
EarlyBird05/08/2020 08:58:50
354 forum posts
272 photos

Wing tip.

All the parts test assembled.

dscn0462.jpg

Time for some more glue?

Cheers beer

Steve

Peter Miller05/08/2020 10:35:27
avatar
11362 forum posts
1342 photos
10 articles

Considering the quality of your building you should be able to cut out your parts with your eyes closed.

Get the plan photocopied, cut out the parts and stick them down to the wood with 3M Spray mount and cut them out

The ply formers might be a bit harder if you have to fret saw them out.

Parallel chord ribs need a ply template with a couple of pins through it. Lay it on the sheet and Zip, Zip round it and you have a set of wing ribs. You could even do that while watching TV but the blood of misscut fingers might get messy!!

For tapered wings you have to stick each paper rib down and cut round it.

EarlyBird05/08/2020 10:49:12
354 forum posts
272 photos

Thanks Peter,

The next one will be a plan build.

I really like the idea of the RF4 but at 72". 144" even with a two part wing would be too large for my cramped small workshop/dinning room.

That's decided then.

The plan is finish the Ballerina then the Fournier RF4 will be next.

Thanks for helping me make my mind up.

Cheers beer

Steve

EarlyBird05/08/2020 21:08:04
354 forum posts
272 photos

More work on the wings toady.

Fitted rib caps.

dscn0464.jpg

Bending the wet sheet over the tip leading edge using sticks and rubber bands. Top view.

dscn0465.jpg

and bottom view

dscn0466.jpg

Bottom view without the sticks and bands

dscn0467.jpg

Decided to try tape as the sticks and bands were not very successful.

dscn0468.jpg

Will it work? we will find out in the morning.

I wonder where the sparky tape came from, I have had it for years, I knew it would come in useful one day and that day has come. smiley Oh yes I remember it came from work. That was a long long time ago.

Flying in the morning, I hope.

Cheers beer

Steve

EarlyBird06/08/2020 06:13:39
354 forum posts
272 photos

Tape removed.

dscn0469.jpg

Hmmm thinking

Cheers beer

Steve

Bob Cotsford06/08/2020 13:17:14
avatar
8746 forum posts
489 photos

Looks pretty good, I seem to remember just bullying it into shape with one or two slits to aid things when I built one. Sandpaper sorts out a lot, the covering does the rest. Fitting cap strips is one of those jobs that is just a pain but the finished appearance pays for all the aggravation.

EarlyBird06/08/2020 13:53:00
354 forum posts
272 photos

Thanks Bob,

To do this is not easy, well that's my thoughts.

The way that wet balsa becomes very pliable and can be moulded around the wing tip did surprise me, especially when the balsa is relatively hard. Care is required because it is also easily damaged.

The tip join line has to be sanded to shape as it is curved, another surprise to me.

It looks to have glued nicely but we shall see later when I am certain it has dried.

Then I can sand.

If there are no wing tip photos you can assume it did not turn out well smiley

Cheers beer

Steve

EarlyBird06/08/2020 14:17:26
354 forum posts
272 photos

I could not wait any longer for the glue to dry.

dscn0470.jpg

dscn0471.jpg

Not perfect but I have the other wing tip to do so I will just have to try harder.

Cheers beer

Steve

Bob Cotsford06/08/2020 15:12:11
avatar
8746 forum posts
489 photos

Don't the tip ribs get capstrips? I can't see anything wrong with the way that's gone on otherwise.

EarlyBird06/08/2020 15:37:40
354 forum posts
272 photos

Cap strips on the tip ribs! Well spotted. I was leaving those until the sheeting was done so I could get a perfect join, or try to anyway.

I have been accused of being too much of a perfectionist in the past. I just like to try my best.

I agree with you there's nothing wrong with it, that a bit of sanding won't sort out.

Cheers beer

Steve

EarlyBird06/08/2020 21:06:32
354 forum posts
272 photos

Almost finished a wing tip yes

Top

dscn0472.jpg

Bottom

dscn0473.jpg

I am a lot happier now and it is true a bit of sanding does improve the way it looks.

From a happy Steve

Cheers beer

EarlyBird07/08/2020 10:58:37
354 forum posts
272 photos

Back to the wing tip.

In order to finish the wing tip shape I have to fit the aileron. I marked the centre line.

dscn0477.jpg

Then planed down to the line.

dscn0476.jpg

And as usual test fit.

dscn0478.jpg

Slot the hinges next and check the aileron up and down movement.

Cheers beer

Steve

EarlyBird07/08/2020 17:59:47
354 forum posts
272 photos

Fitted the hinges and test fitted to the wing. Sanded the tip to the level of the aileron.

dscn0479.jpg

Up and down movement is ample so its all looking good, I think. smiley

Just have to do it all again for the other wing tip.

Not a lot done today as my attention has been diverted away from my Ballerina.

Yesterday I took delivery of a Taranis X9D SE 2019 (I think?). OpenTX is interesting and in a sense I like it. I will use it for the Phoenix. I am almost there just need to work out Crow and Camber mixing.frown It's all good fun!

Cheers beer

Steve

EarlyBird08/08/2020 08:00:04
354 forum posts
272 photos

More fun today, I hope.

Second wing tip starts by cutting out all of the parts and dry fitting.

dscn0480.jpg

dscn0482.jpg

After a second coffee I will check again then it is glue time.

Cheers beer

Steve

EarlyBird08/08/2020 18:58:47
354 forum posts
272 photos

Yes more fun today.

Glued the parts onto the top of the tip then when dry shaped for the sheeting.

dscn0483.jpg

Did the same for the bottom plus completed the sheeting.

dscn0484.jpg

I am beginning to think that I am getting the hang of this building lark. smiley

Tricky bit next. The top sheeting, well was more difficult on the other tip.

The balsa sheet is soaking. I had better not leave it too long!

Cheers beer

Steve

EarlyBird09/08/2020 05:31:21
354 forum posts
272 photos

Continuing my experiment with soaking and forming the wing tip sheeting.

This time I am being more gentle as I think that on the first tip I forced the over wet balsa into shape.

I have also tried using pins and having seen other builds I have followed the example of putting the pins at an angle.

dscn0485.jpg

dscn0486.jpg

Obviously it is not a perfect fit this time but I am thinking that when I glue it I will be able to easily pull it into shape.

We will seefrown

Cheers beer

Steve

EarlyBird09/08/2020 07:10:44
354 forum posts
272 photos

With a bit of sanding to fit and trimming this is what it looks like.

dscn0490.jpg

Is this a compound curve I see before me?

dscn0491.jpg

I am well happy with that.smiley

thinking

Cheers beer

Steve

Peter Miller09/08/2020 08:09:13
avatar
11362 forum posts
1342 photos
10 articles

I use map pins.These are short pins with a round plastic head. These can be pushed fully home and the head holdsthe wood down.

The only downside is that sometimes the head pulls off leaving the pin in the wood.However these can be removed with a small pair of pliers.

I usually stock up with several boxes on Ebay where they are far cheaper than my local Office Supply shop even though they are the same pins.

**LINK**

These are the ones that I like but there are lots of others on EBay

Trevor09/08/2020 08:32:29
avatar
482 forum posts
60 photos

Steve, while you are clearly achieving excellent results the way you are going, I find that masking tape is excellent for holding sheeting in place while the glue dries. Doesn't work too well on wet balsa though!

Trevor

EarlyBird09/08/2020 08:49:39
354 forum posts
272 photos

Peter,

I have a few map pins, in my pin board, and I have seen them used but it never crossed my mind to try them. Now I will definitely try them before ordering a shipment. smiley

Trevor,

Thanks for positive comment. I do prefer to use masking tape and I have found exactly the same problem on wet balsa so I tried Sparky tape which works if you can wrap it around so it sticks to itself. Unfortunately I have run out of masking tape and I am reluctant to go shopping because of the virus risk.

Thanks

The next step is to glue it in place.

Cheers beer

Steve

All Topics | Latest Posts

Please login to post a reply.

Support Our Partners
CML
Slec
electricwingman 2017
Sussex Model Centre
Sarik
Advertise With Us
Latest "For Sale" Ads
NEW POLL - has the pandemic altered your event safety perceptions?
Q: Has the covid pandemic deterred you from attending shows and events in 2021?

 No, I'll be attending just as many as I usually do
 No, but I'll choose my event with greater care
 Yes, I'll attend fewer events going forward
 Yes, I wont attend any where previously I have

Latest Reviews
Digital Back Issues

RCM&E Digital Back Issues

Contact us

Contact us

Magazine Locator

Want the latest issue of RCM&E? Use our magazine locator link to find your nearest stockist!

Find RCM&E!