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A4 Skyhawk build

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Old 09-13-2011, 12:52 PM
  #26
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Default RE: A4 Skyhawk build

Thanks for that. I'll let you know what I decide on the rudder. Keep building I need some more ideas. I am looking at using BVM tank fittings on the three fuel tanks.

Peter
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Old 09-13-2011, 01:07 PM
  #27
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Default RE: A4 Skyhawk build

Thats what I use on these tanks. I think its Dreamworks or Airpower that do aluminium surrounds that the BVM fittings sit into.
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Old 09-13-2011, 03:02 PM
  #28
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Default RE: A4 Skyhawk build

I am going to see if I can make the BVM kevlar set up work......
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Old 09-14-2011, 12:30 AM
  #29
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Default RE: A4 Skyhawk build

Does anyone have any photos of the inside of the speed brake housing? I've searched but all the walk round photo sets I've found have the speed brakes closed.

Many thanks

Alex
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Old 09-14-2011, 03:12 AM
  #30
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Default RE: A4 Skyhawk build

I got nothing on my online search. You may have to refer to some of the detail on a plastic model....

http://www.florymodels.co.uk/a-4-skyhawk/
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Old 09-14-2011, 03:25 AM
  #31
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Default RE: A4 Skyhawk build

There are few [link=http://www.carf-models.com/public_carf/pages/products/700000/078000/gallery/]here[/link]
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Old 09-14-2011, 03:25 AM
  #32
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Default RE: A4 Skyhawk build

Is this what you are looking for . . .


regds

Dale

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Old 09-14-2011, 03:58 AM
  #33
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Default RE: A4 Skyhawk build

Remind me again what colour scheme I am getting please Alex
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Old 09-14-2011, 04:53 AM
  #34
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Default RE: A4 Skyhawk build

Thanks guys, just what I was looking for.

I'm trying hard to find the most scale and if I'm lucky the most boring scheme ever used on an A4, just for you Al
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Old 09-15-2011, 12:16 PM
  #35
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Default RE: A4 Skyhawk build

While working on the back end I thought it was a good time to add some scale(ish) detail to the speedbrake recesses. I've recently done this to a large F86 It was however pre built and painted from D4S, for something relatively simple it really added an extra dimension to that model so I decided to do the same on my A4 but this time it would have to be scratch built.


First off I made a plate out of light 1/16 ply which was boxed in. Small beads of epoxy were applied around all the joints with a syringe and some small bore air-tubing. This gave the base for adding a bit of detail.



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Old 09-15-2011, 12:33 PM
  #36
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Default RE: A4 Skyhawk build

The only problem using ply is that if raised rivets were added it would look like painted wood with rivets on. I could have used some proskin for an instant finish but the thicknesses I had were heavier than the ply and the really thin stuff wasn't usable alone. I could line the box with thin proskin but would still have to add the rivets then paint it all aluminum then red and finally weather it adding more weight in the wrong place.

I decided to make litho plate panels and press the rivets in from the underside making raised rivets then burnish the whole thing. Here's where I'm up to...a few more details to add and it will be ready for paint.
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Old 09-15-2011, 06:08 PM
  #37
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Default RE: A4 Skyhawk build

I wasn't originally planning on doing the inside of the speed brakes, but after I saw you do yours and then looked at that gaping hole, it was a no brainer. I am going the heavier route with lite ply and G-10 (proskin).
I still need to sand the hole and the slit was to get it on and off while I was fitting it, with out messing with the clevis. The G-10 on top will elimate that, and make a "cleaner" cylinder hole.
I will start the rivets this weekend.
Thanks for leading the way Alex! This is my kind of build thread, keep it up!
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Old 09-15-2011, 08:34 PM
  #38
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Default RE: A4 Skyhawk build

Quote:
ORIGINAL: Alex48

Does anyone have any photos of the inside of the speed brake housing? I've searched but all the walk round photo sets I've found have the speed brakes closed.

Many thanks

Alex
here you go.
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Old 09-16-2011, 07:25 AM
  #39
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Default RE: A4 Skyhawk build

Thanks Andy

Glad your finding it useful Pete.

This is the last I'll do for a few weeks now... I've finished off the speed brake detail, I decided to risk cutting the circles out on the speed brake and its worked well. The speed brakes have been primed so its onto making the equipment trays in the front when I have some more spare time. I may get time to spray the gear which has to be my least favorite job of all but will see how my other stuff goes.

Cheers, Alex
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Old 09-17-2011, 01:05 AM
  #40
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Default RE: A4 Skyhawk build

Alex, you're a genious! Good stuff.
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Old 09-17-2011, 04:31 PM
  #41
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Default RE: A4 Skyhawk build


[quote]ORIGINAL: Alex48

The wings need work unfortunately. The gear doors have been installed but clash with each other when opening. The forward main gear door needs to be hinged about 10mm further outboard using robart style hinges and two small slots to get the distance which is what they did on the production airframes. The gear doors have no internal structure so are very flimsy, I'll either need new doors or I'll build something up myself. There is also a small hatch that's been cut just outboard of the forward gear door probably for an air cylinder but I can put one forward of the wheel for the gear door actuation. Luckily the hatch has been cut with care so its just a matter sticking it back on.

Anyway I'm looking forward to getting this one ready especially if it flies as nicely as Ali promises they do
[/quote

Any chance you will do the functional slats?
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Old 09-18-2011, 09:52 PM
  #42
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Default RE: A4 Skyhawk build

I did have a good look at doing slats but the internal structure of the wing makes it difficult so I decided not to bother for the time being. If when I fly it I feel it could benefit from slats I might have another look but doubt it as I hear they are superb to fly.

Cheers, Alex
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Old 09-18-2011, 11:58 PM
  #43
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Default RE: A4 Skyhawk build

Nice work, love the ideas..

I'm back on a build soon to - looking forward to scouring your threads for ideas as its been a while since I last 'built' - other than two Stinger v2's that is!

marcs
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Old 09-19-2011, 03:39 AM
  #44
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Default RE: A4 Skyhawk build

I'm pretty sure you haven't lost your touch Marc.
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Old 09-19-2011, 03:52 AM
  #45
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Default RE: A4 Skyhawk build

Just what I was thinking! anyway... what I do can hardly be classed as building more like assembly with corrections. Looking forward to another great build from you!

Cheers, Alex
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Old 09-27-2011, 07:22 PM
  #46
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Default RE: A4 Skyhawk build

Yo Alex!!!

You need to restart this build! I need some ideas how to cram the fuel tanks, the air tanks, a powerbox, EV5U, 2 EV2u's, and oh yeah all the turbine "stuff" in this A4.
For a big jet there "ain't" a lot of space in it.

Hey Pablo, how about some recon pictures inside that blue angel A4 of yours? Stop holding out and hook a brother up!
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Old 09-28-2011, 02:46 PM
  #47
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Default RE: A4 Skyhawk build

Hi Peter

Sorry but I won't be working on this until after Christmas now I'm really busy with my full time job plus I have three model commitments that need to be completed by November for customers.

The good news is that I can see how you go about your install now

Cheers, Alex
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Old 09-28-2011, 04:15 PM
  #48
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Default RE: A4 Skyhawk build

My turn to carry the baton [:@]
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Old 09-29-2011, 05:48 PM
  #49
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Default RE: A4 Skyhawk build

This A4 build was a whole easier when all I had to do was follow the Alex build manual. I tackled mounting the nosewheel stearing cylinder. I didn't follow the Skymasters set up in the "manual", I used a BVM smooth stop mount I had laying around and............ voila! I haven't decided on how I am going to mount this down yet........
PS> This was a lot of fun putting together with the cylinder still attached to the airlines inside the fuse.
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Old 11-25-2011, 04:14 AM
  #50
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Default RE: A4 Skyhawk build

Hi Peter

How's your build going? Need some installation ideas

Is there anyone in the UK/Europe who's willing to turn me up some aliminium machine guns for the A4?

Cheers, Alex
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