Arcus/Duo/Janus/Nimbus

[French1]

Pulled out of the bag the left upper panel of the Janus and quite happy with it





Most of the work will be needed to be done on that side, spar, joiner box....



LE in shape, some glass tow will be put in there before laying up the lower surafce of the wing



830g or 29Oz quite happy of the weight of the wing in that stae



Stéphane

[hello82]

looks great Stephane!...interesting process and all so different than the balsa and rib building I have always done. Look forward to seeing her behind a tow plane in the near future!

Matt

[French1]

Thanks Matt

the next step is the next panel, right wing

Again lay up



wetting the spar cap



and BAM, in the bag!


Stéphane

[French1]

Et voila,

Heads or Tails?

Just certain of one thing I won't store them vertically in the basement

Sans titre by steffruelle, sur Flickr

Stéphane

[oldstuff]

stephane ,are you going to leave as is or make shorter ? they look great. i'll be watching. Dan

[French1]

Dan

they will stay in one piece, this will keep them lighter and stronger

off course you need the car or trailer where it fits...

Stéphane

[French1]

Received some 3/4in 7075 T6 aluminum wing joiner for couple projects, time to make some wing tubes to move the Janus project

Sans titre by steffruelle, sur Flickr

Stéphane

[lenb]

Bravo!!!!!!

[French1]

Thanks Len

Some result of yesterday work : three beautiful wing tubes

Sans titre by steffruelle, sur Flickr

Secrets you said?
Well first two turn of parchment paper that is held in place by two tiny pieces of tape on the sides
And then stick glue to tape the fiberglass to the parchment paper
Then two turns tight and lets soad with epoxy
Roll, soak, roll soak....

Let is dry and just remove it from the mandrel....

Sans titre by steffruelle, sur Flickr

Sans titre by steffruelle, sur Flickr

[French1]

What about today?

lets look at the spar material, this time it will be balsa (3) glass (2) sandwich to gain weight versus lite ply previously used.

So like a cake, one layer of balsa 1/16 on layer of 6Oz glass and 1/1 weight ratio of epoxy then the same up to get 3 layers...

Sans titre by steffruelle, sur Flickr

then let it dry between two sheet of plastic and apply some weight to it to keep it flat and glue it good!


Sans titre by steffruelle, sur Flickr

150g for 1sqft about 6Oz/sqf

Sans titre by steffruelle, sur Flickr

[French1]

Times comes for the joiner box, slices are cut in 4mm luan plywood

joiner box are 20cm wich let me put 3 degrees of dihedral by wings



here is some sketching








and lets glue together the slices with polyurethane glue






Formal check of the dihedral with the joiner




Lets go after carving the sides, with an electrical file it is much easier






And here it is 75g a piece

[French1]

Let open the spar slot

I picked a trick from one of my friend Pascal, the use of a circular saw to open slots in styrofoam:

Just very easy when you can set the depth, just use a good guide and it does a really good job.



please take time to admire my guide, very very expensive!



I set it in place by drilling three small holes on the side I am not using and putting music wire pins in styrofoam through it to hold it in position

I think I aged quite a lot through that process...




Here is a small trick to remove pieces of styrofoam, the use of a steel ruler...

[stevekremer]

Very nice Stéphane, Why three wing Rods?

Steve K

[Swiss1]

Hard winter in Michigan, it's snowing in you basement!!

[French1]

Steve,

I need two for the wings and one for the fuselage

[stevekremer]

Wing rods, the Steel ones,not wing tubes.

Steve K