Dylan's Dawn Flyer (normal Size)

[cymaz]

Well saved

[Vecchio Austriaco]

Hi Dylan,

nice work. What I cannot see are the openings for the aileron servo cables or the two square bars where the aileron servo lid will sit. Will you open up one of the "production holes" where the screws where sitting during rib production or are you using another way to move the ailerons (one central servo) ?

VA

 

Edited By Vecchio Austriaco on 11/11/2013 10:19:34

[Dylan Reynolds LaserCraft Services]

Yes VA the plan is to cut slots in the positions I drill when making the sandwich. The actual servo bays are not done yet and were planned for tonight, but woke up this morning with a stinking cold and really not up to much at the mo,mind you a bit of cyano vapour might clear the old cinuses lol.

[Dylan Reynolds LaserCraft Services]

Sorry guys not been on in a while. The company where I work has just entered a 2 week consultation period and if nothing drastic happens in this time, we are being shut down. So really not in a building mood at the mo lol. Gimme a few days and the mood might change, fingers crossed.

[Vecchio Austriaco]

Thats bad news! lets hope they get on their feet again or you find something different!

VA

[cymaz]

Oh Dylan I am sorry

[Tony Bennett]

that is not good news.

fingers crossed that things get better for you.

[John Fontana]

I am just starting on constructing the wings using supplied laser cut wood parts.

I have placed the ribs in position on the 6 mm square spars, but found that the two slots cut on the leading edge end of the two ribs nearest the fuselage are larger than 6 mms, and so a loose fit. Has anyone else come across this? Is it an error or am I missing something?

[Vecchio Austriaco]

John, this is correct - you will find a wing joiner among the ply-wood parts. The space is larger as there the wing joiner will be parallel to the 6mm square part.

VA

[John Fontana]

Thanks, Vecchio.

Don't know why but the prospect of the wing I have found more daunting, and been putting off making a start. Anyway, after your reply, I have today begun. Might be posting more queries though as I go along!

[Vecchio Austriaco]

no problem but probably better to use the Dawn Flyer chat thread BEB has set up. Don't want to disturb Dylans thread, he has trouble enough I am afraid.
VA - in Paris as usual

[Dylan Reynolds LaserCraft Services]

Indeed the gap is there for the wing joiner. I don't mind the questions
Here VA its nice domeone is showing intetest. Once I have sorted one or two things here I will get going on the build again

[John Fontana]

Thanks, Dylan. I read about the extra pressures on you, and hope you can resolve them happily soon. I have found your blog to be excellent and really useful, with really good step by step detail so appreciated by a novice like me. Indeed, I do not go into my attic workroom without my IPad to refer to!

It's good to know you are happy to accept queries if I have any. Do tell me to push off if it gets too invasive; I will understand.

[John Fontana]

Well, it took a while but I finally figured out what cap strips are, where they go and what their function is!

A couple of queries -

Could you clarify what is the D section that gave you so much trouble fitting retrospectively.

Also, re positioning of the balsa strip that forms the leading edge. Should the front edge of the ribs be glued into the centre of this LE strip, so that both top and bottom edges of the strip stand proud of the ribs, allowing for the fitting of the cap strips and balsa sheeting on top, so that the latter two end up flush with the top and bottom edges of the LE balsa strip. Hope I am explaining myself clearly enough.

[Vecchio Austriaco]

Hi John,

comment for the second half of your question. Leading edge: yes, glue in centre position, it is exactly as you described it.

VA

[John Fontana]

Thanks, Vecchio and Dylan. I sorted out the D section and cap strips.

I now have another stumbling block - the wing joiner. From Dylan's photo, it looks as if the wing joiner sits across the two ribs at the wing root end, against the two spars that join the first three ribs. The first two ribs have slots on their upper and lower edges but these do not allow the joiner to slide in and sit flush wit the upper and lower spars.

Do I need to cut through the first two ribs to allow the joiner to slide in, then gluing it securely in place?

And how do I set the correct dihedral?

I enclose a pic of the are under discussion. Thanks

[Phil Winks]

Hi John your answer is on page 68 column 2 of the build article in the July issue of the mag. "Cut a slot behind The balsa spar on the 2 inner ribs to accommodate the wing ply joiner" also this is a flat wing. ie; no dihedral
I trust this all helps

Phil

[AJ]

Hi John,

Once the wings are complete you will need to cut through the first two ribs to allow the joiner to drop into place flush against the two spars. It wil be a bit fragile at the point so handle with care. When happy with the fit glue the joiner in place with some strong epoxy.

On mine I set the dihederal by aligning the top spar with the top of the joiner. Seems to be about right as she flys nicely. Being 4 chanels you don't need very much dihederal.

Andrew.

[Phil Winks]

Hi Andrew I'm not sure how you got any dihedral that way as on my copy of the plan the joiner is flat and in Lindsay's article the wing is described as a "flat section, constant cord affair"

Phil

[Dylan Reynolds LaserCraft Services]

Hi Phil, there is actually a slight dihedral on the plan, if the spars are positioned along the top edge of the joiner it will give a wingtip difference of about 28mm. If you place a straight edge across the two tips of the joiner on the plan you will see the centre is roughly 2mm below the straight edge, I did query this with Linds and he did confirm to follow the top edge of the joiner with the spars to give the dihedral, but to be honest, I wouldn't have thought with a shoulder mounted wing it would make too much difference to the flying, especially on such a light model.

[Dylan Reynolds LaserCraft Services]

Oh and in answer to the original question posed by John, I was a little confused on this as well, but what I did was cut the ribs to allow the joiner through but with a butt joint achievable and once happy with fit and position epoxied the whole lot together.

Edited By Dylan Reynolds on 24/11/2013 19:09:54

[Phil Winks]

Thanks for pointing that out Dylan I had wondered why it looks like a tad of dihedral is present in the article photos as for the join between the cut ribs and the back of the joiner i will be putting a web of balsa top and bottom to reinforce the joint

Phil

[Dylan Reynolds LaserCraft Services]

No problem phil, did cause some head scratching here as well. As far as reinforcment goes, don't go overboard weight wise, but I'm not gonna teach you to suck eggs lol

[AJ]

Phil, as the wing is a single piece then there is plenty of reinforcing already if you sheet the centre section straight across the centre join after you have joined the two halves. As you noted the dihederal is very slight so does not cause any issue and if done like this top and bottom then the centre section is extremely strong already without any additional reinforcing. Also don't forget you then have the built up centre to add on top of the wing which adds even more strength.

Andrew

[Phil Winks]

Good point Andrew obviously I need to study the plans a little more. In my defence I'm spending more time on the barnstormer at the min this won't get very much attention till that's well on its way

Phil