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Marutaka Ju87B

Stevo finally gets on the case

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Dwain Dibley.22/07/2017 22:07:50
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coolcoolcoolcool

Dwain Dibley.22/07/2017 22:07:52
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Very neat and tidy as always Stevo.

D.D.

Edited By Dwain Dibley. on 22/07/2017 22:08:46

Stevo23/07/2017 18:12:28
2699 forum posts
419 photos

Wings joined up at last. Just a few shots of the initial clamp up, whilst checking geometry.

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Stevo24/07/2017 18:35:42
2699 forum posts
419 photos

Servo tray added!

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Erfolg25/07/2017 16:26:07
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11395 forum posts
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I am always amazed at the dedication and skill levels of some builders, you are part of that exclusive club, IMO.

I am looking forward as to how you will be attaching your spats.

As to absent instructions, I have surprised myself, in that I thought I did not bother reading them, until a problem arose. Now i recognise with a build I am doing, that I do read them far more than I thought. I guess that many drawings of models have the bare minimum, in the way of detail, as it takes a lot of time to fully detail and annotate.

Stevo25/07/2017 17:51:49
2699 forum posts
419 photos

Whoa.. thanks indeed

Regards mounting the spats... yes I'd like to see that too

Thoughts... get my son to 3D print then in two parts; use that to make a fiberglass mould, or build them from scratch? As for mounting, I'll have to make the Oleos first due to the larger wheel and see how they fit on; perhaps springs or elastic on the inside holding them tight against the underside of the wing? if they are screwed on vibration due to the engine and of takeoff and landings tend to loosen them. Much food for thought, usually at 3AM!!!

I've also designed the electronic siren too - udergoing testing.

Stevo29/07/2017 14:54:35
2699 forum posts
419 photos

More stuff...Managed to jig the entire wing. Fixed centre section, set at 0 degrees. Then moved gauge to outer. Measured +5 degrees. Ummm... What? I need -3 degrees. So jigged even further. Photos are self explanatory.

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I over bent - i.e. set washout to 5 degrees - to allow that lot to spring back should it feel the need

Stevo29/07/2017 17:03:39
2699 forum posts
419 photos

First sheet on.... I've actually finished sheeting this side today.

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Whilst the boss looks on.

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fly-navy29/07/2017 18:21:25
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397 forum posts
11 photos
Posted by Erfolg on 25/07/2017 16:26:07:

I am always amazed at the dedication and skill levels of some builders, you are part of that exclusive club, IMO.

I am looking forward as to how you will be attaching your spats.

As to absent instructions, I have surprised myself, in that I thought I did not bother reading them, until a problem arose. Now i recognise with a build I am doing, that I do read them far more than I thought. I guess that many drawings of models have the bare minimum, in the way of detail, as it takes a lot of time to fully detail and annotate.

It's not the attachment of the spats he needs to worry about Erfolg😁😁😁

Oh gawd he's back and looking over my shoulder says he.

Coming along nicely mate, just got back from hols is why I didn't reply to email

Edited By fly-navy on 29/07/2017 18:22:22

Stevo29/07/2017 22:01:28
2699 forum posts
419 photos
Thanks for your vote of confidence JH 😀
Danny Fenton29/07/2017 22:49:43
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9213 forum posts
4063 photos
Steve carve the spats from blue foam glass them then dissolve or dremel away the foam. Much quicker to do than to think about.
As for attachment, I like a few blobs of aqurium silicon. Gives a little but will come loose under impact. Used the same technique on a couple of Chipmunks.
Good luck, and your wing looks fab
Cheers
Danny
Erfolg30/07/2017 00:40:08
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11395 forum posts
1208 photos

Danny, a little more information on how to use the silicon please.

Danny Fenton30/07/2017 00:54:35
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9213 forum posts
4063 photos

Hiya, sure With the Chipmunks U/C shrouds the insides run against the oleos. A small blob of silcone sealant at the top and bottom (fixed section of oleo) will adhere the glass (or litho) part securely enough to withstand normal use, but come away if you have a prang?

Does that make sense?

Cheers

Danny

Stevo30/07/2017 09:42:28
2699 forum posts
419 photos
Indeed Mr. Fenton.

Just like playing guitar.. learn chords, become famous 😀😀😀😀
Danny Fenton30/07/2017 10:13:06
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9213 forum posts
4063 photos
Mmm it seems I cannot do that Steve. I better stick to panel lines and rivets....
Stevo30/07/2017 10:48:23
2699 forum posts
419 photos

One for you, Danny...

Stevo30/07/2017 10:50:31
2699 forum posts
419 photos

Enough frivolity...

This was left clamped overnight. WhenI removed the jigs, it sprung back from its oversetting of 5 degrees, to 3 degrees.. just where I needed it.

 

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Now to the port side ... I'll sheet this morning and leave it the rest of the day.

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Edited By Stevo on 30/07/2017 10:51:09

Erfolg30/07/2017 16:30:29
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11395 forum posts
1208 photos

I am not trying to take over this post. Although to some degree the spat issue is relevant to my own build and associated problems. I recognise that the Ju 87 is so much larger and sophisticated than my own model, that different solutions may be pertinent but not necessarily so.

These are the links first and the second to my project.

There may be a similar issue in that the wires are pretty thin compared to the spat cross section.

The Gordon Whitehead solution of springs, probably would not work on either model, as it is better suited to the Miles type constant cross section type of spat.

I would be very grateful for any detailed explanation in what ever thread is thought to be appropriate.

Stevo01/08/2017 20:47:03
2699 forum posts
419 photos

Some more. 1st stage sanding with 120g and light weight filler. End caps on too.

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Dwain Dibley.01/08/2017 20:52:55
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1270 forum posts
1265 photos

Looking good you clever little Chappie You.

D.D.

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