Greyhead

This post is not about a part of the model itself but non the less important for that!

The ailerons need to be joined by a length of thin piano wire, at this scale “quick links” are a non-starter mainly because of their size but in any case there are no detachable linkages on the full size Se5a. Therefore the upper and lower wings will be permanently fixed together by the interplane struts and the aileron linkage; I don’t haven’t enough room to be able to keep the model permanently rigged so this could cause a problem for storing the wings when removed from the fuselage.

I’ve made 2 frames to support the inner sections of the wings; they are in 2 parts and held together with removable pins.



The wings will be stored “hung” from brackets by the top wing, the lower wing supported by the interplane struts and the frame, which grips the trailing and leading edges.



To assemble the model the wing locating pins are pushed a little way into the holes in the centre section and wing stubs, which then take over the support of the wings.



The pin is then removed and the frame disassembled, the aileron controls connected and the wings finally pushed home and the wing retaining grub screws tightened.



That’s the theory anyway!

Bunkerbarge

This is one of those rare models that really does deserve the description of "Museum Standard". She is looking superb Grahame and I can't wait to see a couple of shots of her in the air.

__________________

“Dirty British coaster with a salt-caked smoke stack, Butting through the Channel in the mad March days"

Greyhead

I’m still searching for things to do whilst waiting for the paint to arrive; I hadn’t intended to do this job until much later in the build but needs must etc.

The piano wire, which links the ailerons, has to be the correct length to ensure the ailerons themselves are at the same angle relative to the main planes. Although they are drawn on the plan I prefer not to rely on these but to make them to fit the actual model; a build-up of tolerances (euphemism for building errors!!) can result in the drawings and model not exactly matching, so first I made an adjustable link.

The landing wires are attached to ensure the correct dihedral angle, the ailerons held at neutral with spring clamps and the link adjusted to the correct length.



The adjustable link is made from a couple of bent pins soldered to some brass screw clamps from my “useful items” box and a length of 2mm rod. Once locked at the correct length the aileron clamps are released, the link removed and a piano wire link bent to the same length.



Fitted in place the link looks a lot better than a 2mm rod attached to control horns by quick links.



When the links are permanently fitted the hole in the Solartex will be covered using a frayed tape with a slot in it, but this will be about the very last thing to do to the model, it won’t be done until all the painting etc has been completed and the wings are joined as a single unit.

Proflooney

looks beautiful grahame learned a lot of nice tricks will help me with my totally scratch built 3rd scale Bristol Fighter. Thanks for such an informative thread. my website is http://www.proflooney.net I will be starting the bristol build in a couple weeks but in the design section I been doing a detailed design thread. on my site is also one for my 1/3 scale gotha V Bomber I am designing and about to start too it has a mere 26 ft ws and i already started using several tips I learned from you to flesh out certain areas of both planes I was figuring out how to do them well.

Joe

jymster

Joe,

Good to see you here as well. How are the Bristol and Gotha coming along?

James.

Proflooney

Hi James they going good waiting on parts for both and trying to get ahold of the flair nose section former drawings and the nose section plans for the bristol as I like the nose on it very scale outline and that should finish up the bristol design for the most part. thats the area giving me fits trying to get right.

Greyhead

I always use silver Solarlac to fuel proof the engine bay; firstly because you can see where you’ve been and more importantly where you’ve missed and also because it shows up any places where the joints are less than perfect and believe me there’s quite a few of them!



You can see where the corner of the engine bearer meets the former there is a slight gap; it’s not a strength issue at the moment but the crevice could hold fuel / oil and eventually it would soak into the wood and cause problems. I’ll fill it and any others with epoxy / micro balloons then give it another coat of Solarlac.

rjwood_uk

what are these "micro balloons" you talk of?

....im guessing they are tinny little ballons lol but any technical info/pics/discription and how/what they are used for would be great!

Greyhead

Richard

Although the grammar doesn’t sound good I think the best description would be that micro balloons is a very fine powder; whether or not each grain is in fact a hollow sphere I’ve no idea but it is very light though not “spongy” like polystyrene. It is used to “bulk out” glues, typically epoxy; it becomes more capable of gap filling as it makes the glue into a stiffer mix without adding too much weight. I’ve also used it to “mould” simple shapes by mixing enough micro balloons with epoxy to make a very stiff mix, waiting until the epoxy is starting to cure and then forming the shape with my fingers; a final sand once fully cured finishes the job.

Grahame

Proflooney

yes grahames correct. basically microballons is kind of a thickening agent which helps the epoxy hold shape. it is commonly used to create fairins etc. other agents that work similar are talc and cabosil.