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Marutaka Ju87B


Stevo
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If that were the case, the wheel would be forced back into the piano wire and would jam against it and stop rotating; as they are now jammed, the aircraft would tip over crying

I've yet to add the braces that go between the wheel axle and the wire braces themselves, which then allows for movement up and down via the oleo, and limited movement back and forth as sprung against the piano wire. wink

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Bucksboy - these should explain it further ! Just for reference, the Oleo bracket is screwed onto the front beech bearer, whichruns up the central anhedral part.  The rear of the piano wire brace goes into another beech bearer in the wing-that's what that 12mm steel collet presses against. All the bearers are epoxied in and ply reinforced (see previous photos)

2017-08-13 12.55.18.jpg

 

2017-08-13 12.55.45.jpg

 

 

Edited By Stevo on 13/08/2017 13:14:13

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  • 2 weeks later...
  • 4 weeks later...

After an affair with an ARTF, I'm now back on it.

Elevator linkage glued in and fettled...

2017-09-28 16.04.22.jpg

I'll trim the fill in strips later.. I cut a couple of holes to drip some epoxy in to secure the link..

And now the fuselage. And what a feat of engineering this will be - in decyphering the drawings!

 

Two front halves cut from 3.2mm ply. I cut some holes to make it look cool..

2017-09-28 17.33.59.jpg

So.. how? Cut one half exact to drawing by hand, and cut out the holes.. Double sided tape it to the other.. run it through a table router with a template bit... then two halves!

2017-09-28 17.27.01.jpg

2017-09-28 17.30.18.jpg

As Balsa Cabin did not have the long sections of beech, I machined up some 15 x 18 oak. Same density as beech. Here's one side being epoxied on...

2017-09-28 17.49.27.jpg

Edited By Stevo on 28/09/2017 18:05:22

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More done. As best I can, I printed off all the bulkhead detail after adjusting it for size to fit the drawing.

2017-09-29 10.03.26.jpg

Then mark the cut lines: -

2017-09-29 12.29.42.jpg

Just an application of the bandsaw and disc sander. The router helped get the lines straight, however the kerf of my table saw was around 3mm anyway, so I used that rather than the router.

2017-09-29 12.57.00.jpg

A good fit.

2017-09-29 12.59.42.jpg

At this stage the cat was bored and decided to get stuck into the plan, literally...

2017-09-29 14.44.41.jpg

 

So here is the complete sub assembly. glue up tomorrow...

2017-09-29 16.19.43.jpg

2017-09-29 18.01.06.jpg

Edited By Stevo on 29/09/2017 19:59:46

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C'mon guys... keep up. Any interest?

The following is really self explanatory. The front assembly cut out and glued together, placed on the SLEC jig, straightened etc...

2017-09-30 14.51.31.jpg

2017-09-30 14.58.08.jpg

Servo mountings for elevator and rudder (Closed loop)

2017-10-01 13.40.08.jpg

2017-10-01 13.40.22.jpg

Tank.. removable plate underneath, otherwise there's no way of getting to it.

2017-10-01 13.40.54.jpg

Final assembly

2017-10-01 13.41.26.jpg

And on the wing, nice 'n' square

2017-10-01 13.43.50.jpg

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  • 3 weeks later...

Some more done, The photos tell the tale. Closed loop on Rudder, snakes for tailwheel and elevator. The inners are 2mm piano wire, a nice smooth fit into the outer. The tailwheel is a modified version of the Blackhorse Stuka version, which is sprung to a limited extent. I had to make it attach to the snake internally... alas in the Blackhorse version, it attaches outside the fuselage - sacriledge. The sides are actually on and shaped, I made the vertical stab and rudder today as well.

Enjoy.

2017-10-14 17.52.35.jpg

2017-10-14 17.52.39.jpg

2017-10-14 17.52.49.jpg

2017-10-17 17.53.34.jpg

2017-10-17 17.53.39.jpg

2017-10-17 17.53.47.jpg

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im not an inexperienced builder as terminology goes, but the following had me stumped.

" however the kerf of my table saw was around 3mm anyway, so I used that rather than the router.

I've never used a table saw nor have I adjusted its "kerf" ?

 

Edited By Tom Thomas on 22/10/2017 04:28:49

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Here's some tail detail. That complex contour round the fuselage / tail has caused me sleepless nights... I need more Permagrits!!

2017-10-22 11.07.17.jpg

Rudder...

2017-10-22 11.07.22.jpg

Shaping to be done... heart in mouth!

2017-10-22 11.13.26.jpg

A peek inside... you can see the piano wire control rod

2017-10-22 11.14.17.jpg

Closed loop exits

2017-10-22 11.14.34.jpg

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Prompted by your Build Thread thread, I thought I'd pop in and look at your, er, Build Thread!

Superb workmanship on what has to be the best looking ugly aircraft, ever!

But - tell us more about those wooden lever clamps. DIY jobbies? I'd like to have some of them!

 

Edit:  Just found 'Luthier clamps' on Youtube - off to spend a few hours there!

Edited By Mike T on 22/10/2017 14:22:25

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