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Auster mk5

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11 Jun 2013 17:38 - 11 Jun 2013 17:43 #1 by Ex-Member
Auster mk5 was created by Ex-Member
got the plans today for a 72" wingspan version.

not going to start it for a little while, but i can start planning it out.

want to push my scale build ability's a bit more with this one.
hope to be able to sort out the stitching and cockpit details better.
Last edit: 11 Jun 2013 17:43 by Ex-Member.

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25 Jun 2013 19:29 #2 by Ex-Member
Replied by Ex-Member on topic Auster mk5
as i have run out of glue (said that somewhere else i think)
i got the plans out and decided that 72" is not big enough.
soooooooooooooooooooooooooooooooooooooooooooooooooo
i am drawing up some plans that are 25% larger, that will give me a 90" wingspan and more room for detail.
want to have opening doors on this one.

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26 Jun 2013 15:10 - 26 Jun 2013 15:28 #3 by Ex-Member
Replied by Ex-Member on topic Auster mk5
not looked at anything today, but i have been doing some thinking about the build.
i will need to split the wing for transporting, so do i do a 2 piece wing or 3 piece with a fixed center section.
hmmmmmmmmmmmmm and need to work out the best way of joining the sections with the minimum of fuss.
it is interesting work doing a design.

how was the original fitted.??
Last edit: 26 Jun 2013 15:28 by Ex-Member.

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26 Jun 2013 17:47 #4 by Phil Wood
Replied by Phil Wood on topic Auster mk5
Now I'm interested in this one, I like the looks & I may be looking for a high wing model. ... I mentioned that to Garry yesterday..... What glue do you need? :)

I just own the forum .... you guys make it great thanks.

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26 Jun 2013 19:48 #5 by Ex-Member
Replied by Ex-Member on topic Auster mk5
been scaling up the plans on and off today (sons car AGAIN)





starting to make some headway.
glue is on its way. :)

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27 Jun 2013 00:58 #6 by Quorneng
Replied by Quorneng on topic Auster mk5
Tony
It looks like you have a fuselage brace right across the door opening. :ohmy:
Now if the brace went across the other diagonal..... ;)

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27 Jun 2013 09:05 #7 by Ex-Member
Replied by Ex-Member on topic Auster mk5
yup.
it's when you sit back and look that you notice little things like that.
at the moment i am just enlarging the original plans and will have to alter things to get the look i am after.
the tail is 1/4 sheet, but in will want to make it a built up one with fabric covering.
the fuselage is sheeted with stringers on the outside to replicate the fabric covering, so i will cut holes in the sheet to lighten the rear end.

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27 Jun 2013 13:27 #8 by Ex-Member
Replied by Ex-Member on topic Auster mk5
well the basic fuselage plan is drawn up, just inking in the main parts now.
then once i have cleaned up the pencil lines i can look at working out all the details;- like how to work the door, battery hatch, servo placement,wing fixing and endless other bits and bobs.
i might even start cutting some ply formers, maybe.
still waiting for glue so everything else is on hold........

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27 Jun 2013 14:20 #9 by Ex-Member
Replied by Ex-Member on topic Auster mk5

have moved the bracer that crossed the door opening and have put one in the door that will brace when it is shut.
battery tray is marked out as is the hatch and motor mount plate.
need to look at the top of the fuselage along the wing seat next.

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27 Jun 2013 16:16 #10 by Quorneng
Replied by Quorneng on topic Auster mk5
"...the fuselage is sheeted..." does seem a bit odd as the full size was a fully triangulated framework (in steel tube).
Auster
Surely this is one case where a conventional balsa 'framework' type construction would be scale. :)

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27 Jun 2013 16:38 - 27 Jun 2013 16:49 #11 by Ex-Member
Replied by Ex-Member on topic Auster mk5
yeah it is basically a box, then some stringers added to the sides to wrap the covering over.

don't know if i want to completely re design the thing or just mod what has been done.
might just do it the (sorry Garry) way they designed it but cut some holes in the sheet sides to lighten it.

anyway i mucked up the fin drawing. grrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

have to re do it later.
Last edit: 27 Jun 2013 16:49 by Ex-Member.

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27 Jun 2013 16:47 - 27 Jun 2013 16:47 #12 by THE BLACKBIRD
Replied by THE BLACKBIRD on topic Auster mk5
I must say your drawings look very neat
Last edit: 27 Jun 2013 16:47 by THE BLACKBIRD.

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27 Jun 2013 17:04 - 27 Jun 2013 17:44 #13 by Ex-Member
Replied by Ex-Member on topic Auster mk5
you have not seen the pile of eraser rubber on the floor from the endless corrections.
then i do it again in ink and make a mistake i can't rub out. humpf........ :P

OH POOOOOOOOO just had a look at the frame work pic and all the ribs in the fin and rudder are wrong, got too many.
need to re draw it all. sugar sugar sugar. :P
fuselage plan is wrong as well.
time to screw it all up and start again. humpf
Last edit: 27 Jun 2013 17:44 by Ex-Member.

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27 Jun 2013 18:29 #14 by Klipkopwildlife
Replied by Klipkopwildlife on topic Auster mk5
In answer to an earlier question, the main spars of the wings stop at the cabin. Across the cabin are two spacers that are in tension when on the ground and in compression when flying. The main spars, the wing struts, the base of the fuselage and the cabin spacers are in a complex parallelogram of forces. The length of the wing struts means that the aircraft can never be rated for negative G manoevers.

Do it now, you may never get another chance
Thanks: Ex-Member

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27 Jun 2013 19:00 #15 by Ex-Member
Replied by Ex-Member on topic Auster mk5
hmmmmmmmmmmmmmmmmmmmm sounds awfully complicated to me. :(

i might have bitten off a bit too much with this one. :blink:
still we can only try. :P

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