1: 3.25 scale MG19a Steinadler

[cw]

Whilst the planking of the fuselage is being completed, it's time to make a start on the stab...




Drawing centre lines on everything helps to see if it is all straight



Masking tape and pins are essential for the sheeting process (1.5mm balsa)

[Laurent Beldame]

Hello Chris

An other perfect building made with frenetic rythm..The tradidional teapot is not forgotten, ramin or not ramin

L

[cw]

Laurent, have you had any success with your flycam...?

Tonight is a big night...the the temporary formers have been removed before adding the GRP

Using the power file to clean up the inside of the fuselage...



Ready now for the fibreglass

[Paul ELLIS]

Salut Chris

I would like a Power File like that

Je voudrais un Power File comme ça

In the UK on offer at Axminster Tools for £39.95... (€47)

En Angleterre un offre spéciale de Axminster Tools c'est €47

In France €99.99 at Mr Bricolage!!!!! (£84.69)

En France €99.99 à Mr. Bricolage!!!!

Unfortunately the postage from the UK takes it up to £55

Malheureusement avec le courier de UK c'est €65

Is there anyone here who has seen a Power File cheaper in France?

Est-ce qu'il y a quelq'un ici qui a vu un Power File moin cher en France?

[cw]

Paul, I've just noticed that Machine Mart, where I bought the powerfile, have an export service...

http://www.machinemart.co.uk

+44 115 956 5555

[Paul ELLIS]

Thanks Chris, I'll check them out.

I was just surprised that they were so much more expensive in France (not usually the case)

Paul

P.S. I checked with Machine Mart and they're asking £52.86 (€62.47) plus postage

Looks like it's going to be Axminster tools

http://www.axminster.co.uk/product.asp?pf_id=720128&filter_cat=&am.....le=1&jump=0

[cw]

Before we can complete the rear of the fuselage the stab must be built.
Now it's time for the elevator...




The elevator is made over-size to be sanded back to shape later




The hinges must be supported in the stab with wooden dowel. The dowel is wrapped with masking tape first to preven splitting whilst being drilled...



Now the dowels are glued into the stab...



Once hinged up, the elevator can be sanded back flush with the stab...


Final shaping of the tips is left until the end...




Et voila, ready for the finishing touches...

[Paul ELLIS]

Excellent progress as usual Chris

How deep have you made the elevator shroud?

I think I made mine too deep on the Minimoa (about 12mm) hence the problems I had trying to recess the elevator deep enough.

Paul

[cw]

A difficult thing to measure afterwards Paul, but I guess around 10mm

Meanwhile, the rain it rains, the wind it blows, the cold goes up your trouser legs...perfect building weather!

Time to beef up the cockpit aperture...




Now to apply the polyester filler...



As usual the nose block is made up from filler, but with some lead built in to get the ballast as far forward as possible



Now the skid has been attached...



And the cockpit aperture is now very strong...!

[de Schaetzen Harold]

Dear Chris,

I notice good building activiy this WE.
Now it is time to call the house keeper and specially to activate your vacuum cleaner.
Or you need to put a new breathing mask.
Best regards.

Harold

[cw]

Harold, if I use our new vacuum cleaner to remove the dust, my wife will have something to say

[cw]

It is the weekend again, hooray...

The tailplane will be set up to rig and connect up very quickly and easily.
The 2 square brass tubes will be set in the fuselage, but first we must experiment to find the optimum set up...




Now to check it out in the fuselage...

[cw]

The elevator pushrod is made up from 12 x 6mm Spruce, reinforced with 6 x 10mm balsa




Two servos operate the pushrod with an aluminium connecting plate. There is a slot over one servo arm so that if one servo dies, the other can give 50% of the movement...




Another view of the pushrod in the fuselage

[cw]

Time now to continue sheeting the fuselage: thin card is used for a template. Pressing down with a thumb causes the edges to show up on the card to give the correct shape...


Now the shape can be transferred to the ply (CTP?)


And now the ply on to the fuselage...

[cw]

Work continues at the rear...meanwhile, the fuselage is now fully sheeted in CTP

[Stephan]

Hi Chris
The fuselage is now completely covered. I am realy wondering how you want to realize the wing mount
Stephan

[cw]

Stefan, I will probably do something crude, as I did with the Habicht...



It usually works out OK:

[cw]

Moving now to the cockpit canopy, first some of the frames are made up from laminations of .75mm CTP








The lower frames are made up from 12 x 6mm spruce. The right hand side one is already hinged up...

[Paul ELLIS]

Salut Chris

As usual, superb work

Did you laminate carbon tows between the laminations of ply for the canopy frames?

As usual, I'm having trouble finding any.

Paul

[cw]

Paul, I can't get any either, but it doesn't matter as it's not really necessary. I've been experimenting with these laminated pieces: 5-min epoxy gives a quick and strong job, but there's obviously not much working time. White glue left overnight is easy to use, but the piece is slightly more flexible, but still quite useable..

[Paul ELLIS]

Excellent!

Merci Chris

[cw]

Still working on the canopies, but the job is nearly done...

Adding the .75mm CTP to the front canopy



The joins are reinforced with piano wire pegs



[img]

The lower frames for the rear canopy are shaped to the fuselage by clamping 2 laminations of 6 x 3mm spruce epoxied together





Now the job...




is nearly complete...

[cw]

OK, for Stephan, it's time to look at the mounting of the wings

Here are the component parts of the wing joiner box...(The brass box-tubes cross over in the main box to allow for a greater depth of joiner blade)



The sides of the box are bolted together to allow the brass boxes to be inserted through the fuselage sides afterwards...


The box is now in the fuselage, but will not be permanently fixed until the wings are properly set up...

[cw]

Now to set the angle of the wing root fairing...(I should have done this before the last post!) A wing profile blank has been cut out and a piece of 6 x 6mm spruce glued to the geometric chord line.




The fuselage has been set up so that the tailplane is at 1.5 degrees negative. Now the profile blank is set to zero with the spirit level and the position of the wing root fairing established...
The aerodynamics are:
HQ35/14 wing root, HQ35/13 at the gull join, and HQ35/12 at the tip.
The calage is 1.5 degrees

[cw]

Joyeux Noël to all our readers...

[Benoit1664]

C'est quoi le RAMIN? What does ramin mean?

[VincentB]

C'est un bois exotique beige clair, ça ressemble au samba et à l'ayous, je ne sais pas si c'est la même essence mais ça arrive qu'un même bois soit appelé différement selon le pays d'origine

[Stephan]

[Laurent14]

Je vous invites à lire ce lien.

http://becot.info/tako/francais/ramin.htm

C'est une espèce en voie de disparition.

Un autre lien sur le ramin

http://www.le-bois.com/bm_fiche.asp?id=83

[cw]

In the UK Ramin comes in 2.5m lengths, ideal for wing spars. However, the quality has become not so good in the past few years, and here is what happened to my Skylark 4 on it's 1st flight.
Now I use Spruce, which comes in 1.25m lengths and I now have to splice 2 pieces together to make the wing spars...