Greyhead

The flying wire attachments are fixed to the spars by epoxy and binding with button thread; I didn’t want to compromise the spars by drilling holes at these high stress points. For some unknown reason the inner and outer brackets are of completely different designs.

The inner is bent from thin brass sheet.



The outer is from 0.5 mm steel.



Next to the bracket is the fixing for the inter plane strut and once again it’s a closed loop adaptor! They will enable some fine adjustments to the lengths of the struts and also allow a degree of “span-wise” movement between the top and bottom wing halves, which I think is advisable as they will be permanently joined by the struts, it should help when sliding the wings / fixing rods into position on the centre section.

One wing finished, now I’ve got to repeat the exercise another 3 times!



To alleviate the boredom I’ll do a bit more detailing to the fuselage in between!

smcouch77

Hi Grahame. Great job! And thanks for sharing your work with us. How are you hinging the ailerons? I used carbon fiber tubes for my spars, but switched to balsa at the ailerons. I couldn't figure a way to hinge with the carbon fiber.
Steve

Greyhead

Steve

The aileron hinges will be the same as I’ve used for the rudder and elevators, both of which use carbon fibre tubes.

The hinges consist of a brass yoke with a brass tube soldered to it and a piano wire hinge pin.



The yoke goes over the carbon fibre tube and has a retaining pin fitted through the 2 holes to prevent the hinge being pulled out, the piano wire hinge pin has a brass keeper soldered behind the control surface leading edge for the same reason.

Grahame

smcouch77

Grahame, Thanks for the info. It's always amazing to see how many ways there are to skin a cat.
Steve

__________________
Life's too short to fly ugly airplanes!

Greyhead

I have recently received some research material from a fellow SE5a modeller and it has raised a query about the dihedral angle. To save me writing it again, here is a copy of an email I sent:



I've now read the articles you sent me and there is lots of very useful information in them; thanks again.

One thing that is a bit of a cause for concern is the dihedral angle. I'd read several references on the Internet to the angle being 5º and sometimes being reduced by 1º or 2º in the field; I had assumed this was correct because it was confirmed from different sources.

In one of the articles you sent me it says the dihedral angle is 3º 20’; this is very precise if it’s a “guesstimation” so I assume that this is the true angle obtained from factory drawings. Some modifications to my model would appear to be in order; luckily it’s not too late, the wing rods haven't yet been permanently fixed.

To make matters worse I've repeated the 5º angle in my posts in your thread, as well as my own, so that would appear to anyone searching the Internet to be extra corroboration from myself. I'll have to edit the posts to include this “new” information.

Just goes to show that you shouldn't believe all you read on the Internet!

smcouch77

Hi Grahame. I agree with your statement. Don't believe the 3deg article either unless it can be backed up from other sources. I have six different sets of three and five views. They all show 5 deg dihedral. Also I have it in writing in two publications ( WWI Areo and Squadron/Signal). Different field mods were made to just about everything on this plane, but unless you know that the plane you're modeling had a different dihedral, I'd stick with the factory 5 deg
Steve

__________________
Life's too short to fly ugly airplanes!

Greyhead

I did a temporary rig of the top wings using both 5º and about 3.3º and to be perfectly honest I really couldn’t tell the difference when looking at the model as a whole so I’ve decided to stick with the 5º that I originally built in to the mounting blocks; anything for an easy life!

Out of interest Steve do your drawings have the 5º angle written on or have you measured it with a protractor?

Dirk

Hello Grahame,

that was quite a job to read all the post since my last visit to scale models. But once again I was highly impressed. The photographs in addition to your comments show that it's always worthy to think (and make) over every single detail till you're satisfied with the result. Great job.


Greets from Germany,
Dirk.

smcouch77

Hi Grahame. WWI Areo Publishers lists 5 deg dihedral in the specs. The drawings I have are scanned into a CAD program on my PC. I draw a line from tip to tip and then along eachleading edge. The program gives the angle anywhere from 4.8 to 5.1 for the six front views that I've checked.
Steve

__________________
Life's too short to fly ugly airplanes!

squarehead

Hi Grahame
Ive just come across this thread whilst looking for info prior to building a DB sport and scale kit at 1/3 scale.
All I can say is you have really inspired me AND given me all the scale info I need.
Keep it going!!!