Jump to content

Mustang like FPV


Henri Squier
 Share

Recommended Posts

Hi,

For those who followed the mustang "homemade challenge" here is (at last) the balsa version.

Initially intended to be semi scale, I discovered FPV and became (madly) addict.

The project was thus re orientated to be a FPV platform.

As usual for me : Sketchup drawing :

stang fpv sk.jpg

The idea was to have an easy build, light and gentle flying plane :

43 inch wing span.

Eppler 209 (discovered on TN Spitfire and work great).

expect < 15 oz / sq inch.

No scale details : straight forward build : close raw.

henri

Link to comment
Share on other sites

  • 3 weeks later...

Hi, sorry for interruption ...

Here some post sanding pics ...

a.jpg

As it was previously said : just a rough P 51 like.

aa.jpg

b.jpg

Here will be located the lipo for Rx & servo and FPV gear (cam & Tx) :

bb.jpg

(foam braced with balsa and glass fiber / epoxy)

c.jpg

I really love balsa

d.jpg

I think it's why I can't buy ARTF (although they look so cool).

e.jpg

f.jpg

g.jpg

i.jpg

h.jpg

The aim wil be to find a mate for FPV formation flying.

Edited By Henri Squier on 05/11/2015 21:10:55

Edited By Henri Squier on 05/11/2015 21:11:31

Link to comment
Share on other sites

Henri I am very impressed with your build; it looks really good. I also like your drawing: is this the free sketch up or the full version? I have not mastered it but have been attempting to learn Turbocad 3D ; whilst I am getting to grips with work planes I do find the programme very feature rich but not very easy to use. I had given up on Sketch up but perhaps this was a bit premature.

Anyway; good luck with the project.

Trevor

Link to comment
Share on other sites

Hi Trevor, thanks for comment.

Yes it's the basic free Shekchup. For only plan drawing like I use it, you got more than you need. I began with Jason Anderson tutorials quite easily (**LINK**).

But I won't hide it's much more time consuming than pen&paper.

Turbocad is surely more powerful and allows you (unlike Sketchup) to create files for laser cutting.

 

It's (highly) time consuming but has an accuracy unreachable with only pen&paper ...

 

The first project (that flew) had its wing (made too fast on the bench) a little twisted.

Nothing more in the air that two clicks of trim but the mis aligned ailerons were too much for my self esteem.

wc1.jpg

So, for my N°2 and N°3 I made a cradle.

This would have been tricky with only pen&paper.

wc2.jpg

Preforming of leading edge top sheeting

wc3.jpg

dry fit

wc4.jpg

What's incredible with CAD is the accuracy. Just a light sanding and everything fits perfectly at once, really incredible.

Edited By Henri Squier on 07/11/2015 23:04:18

Link to comment
Share on other sites

N°2 and N°3.

 

Why N°2 and N°3 ?

Because N°1 is ...

num 1.jpg

... is late N°1.

I wanted to do exciting things like in youtube and told to me " why not fly through an old empty barn ? "

Immersion worked so well I was "in the plane" and not in the field with headset forgetting all basic physics ...

... 5.8 Ghz waves decided to stay in the barn as soon the plane flew in : no more video.

A pillar cut the right wing in two and the engine moved back half way into the nose.

 

 

 

Why N°2 and N°3 ?

Because what I do best is what I've already done previously.

Who did not tell to himself : "If I had to do it again I would do it this way ! "

For instance :

- 2.0° wing incidence was too high.

- "cockpit" was too light, needed to be reinforced

- wing bearing has to be in ply and not balsa.

- need more power (260 W was not enough punchy),

an so on ...

Finally decided to improve the fuse design :

numb 2 sk.jpg

 

So, there will be some more balsa dust.

Edited By Henri Squier on 11/11/2015 21:39:55

Link to comment
Share on other sites

  • 2 weeks later...

Waouh .....

1.5 aerobatic project, A4b aV-2, incredible scale alu P51 ....

The level of this topic has recently become seriously high !!! 

A little intimidating ...

... well just to humbly finish what I've started with

 

I was not happy with the "hole" version :

dsc02970.jpg

Began the wing tips :

dsc02969.jpg

... and fuse :

dsc02966.jpg

dsc02967.jpg

dsc02979.jpg

dsc02976.jpg

First cross :

dsc02971.jpg

Forgot a little space here :

dsc02974.jpg

dsc02975.jpg

I can already see it in the air ...

Edited By Henri Squier on 13/12/2015 14:09:39

Link to comment
Share on other sites

Thank you, thank you Josip. Your support touches me.

I'd like to share I'm very (very, very) enthusiast about that :

s.jpg

Found (cheap) at Hobbyking.

It's very light (much lighter than ORACOVER antique i used previously).

dsc02991.jpg

It feels however strong enough.

dsc02992.jpg

You can see the aluminum like effect - very nice.

dsc02994.jpg

Not a fold !!!

Much easier than Oracover Antic.

dsc02996.jpg

It makes you want to do well.

dsc02999.jpg

Up to me it gives incredible results.

dsc03003.jpg

Very nice alu effect.

Here comparison with Oracove Antic Silver :

dsc03002.jpg

I'm very happy with this : quality an price (10 euros for 5 m !).

I'll tell you next if it's paint friendly.

henri

Link to comment
Share on other sites

  • 2 weeks later...

Wing attachment ... (always a little tricky... for me)

First I make a loose "bolt-mount".

A hole has previously been drilled (perpendicular to the down side of the wing).

Everything centered.

dsc03005.jpg

fed into the fuselage

dsc03006.jpg

maintained in place with tape - To be at the right place is the only thing possible.

dsc03007.jpg

Cradle glued on both sides

dsc03008.jpg

dsc03009.jpg

And finally the bolt mount.

dsc03010.jpg

Just in case it could interest some one, henri.

Link to comment
Share on other sites

How I deal with very (hugely) off center holes ...

This plug ...

dsc03026.jpg

... belonging to this wing ...

dsc03027.jpg

Is suppose to come into a hole drilled in a fuse former.

But it's always a little tricky and the first hole is never the good one...

... and the hole becomes a cave.

So I do in a thin drilled ply witch is placed at the correct place ...

dsc03032.jpg

... remove the wing and put a chinese stick surrounded by bakery paper :

dsc03028.jpg

And fill the hole (cave) with epoxy :

dsc03022.jpg

You can see how I've been searching the right fit with my drilling machine.

And after epoxy cure and sanding ...

dsc03034.jpg

... I finally have a tight hole at the right place.

If some one have an easier way to do : I'll take it. Thanks for watching, henri.

Link to comment
Share on other sites

Oh thank you so much John ....

Did I tell you I like HobbyKing bright silver covering film ?

dsc03044.jpg

Did I tell you I like it very much ?

dsc03051.jpg

very very much ... the way it accept curves ...

dsc03050.jpg

hugely ... and small curves ...

dsc03053.jpg

massively

dsc03055.jpg

Oh ! sorry I've already told you.

Thanks for watching anyway, henri

Link to comment
Share on other sites

  • 2 weeks later...
  • 7 months later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...