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Author Topic: Night Train Mk VII Build  (Read 1831 times)
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Starduster
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« on: February 11, 2016, 09:16:39 AM »

I've received the prototype Short kit for the Night Train Mk VII from Bob Holman.

I figured I'd so a build thread.

I will start with the Stab and Fin/Rudder, then the wings and finally the fuselage.

Please note that though I am posting this in the "Power" forum, my airplane will be electric.

A few pictures to start:

1: "Out of the box"
2: A sample of the parts sheets on my bench
3: The stab parts laid out on the plan
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Night Train Mk VII Build
Night Train Mk VII Build
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Starduster
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« Reply #1 on: February 11, 2016, 10:31:35 AM »

Stab is coming along:

1: Ribs in
2: Leading edge bottom sheeting
3: Top Spars
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Re: Night Train Mk VII Build
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Starduster
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« Reply #2 on: February 11, 2016, 11:23:37 AM »

Stab just about done.

1 and 2: leading edge in. 4 Laminations of 1/16 X 1/4. I use regular Titebond for this.
3 and 4: Diagonals in.

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Starduster
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« Reply #3 on: February 11, 2016, 01:13:53 PM »

Fin/Rudder went together easily. I built it "in the air" as it is symmetric.

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gossie
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« Reply #4 on: February 11, 2016, 04:27:38 PM »

Neat building, and looks like nice wood.
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Starduster
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« Reply #5 on: February 12, 2016, 11:43:30 AM »

More progress:

1: because the original drawing called out for 3/8 Ply for the wing pylon, I did it with 3 of 1/8 Ply instead. I did cut out the inside of the center to save a little weight. I glued the three together this morning so it will be dry by the time I start the fuselage this weekend.

2, 3 and 4: The wing tips going together quite well. All parts fit like they should. (BTW - I went to Kinkos/FEDEX and had them print out a mirror image of the drawing for the left wing)

The airplane is going together quite well.
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glidermaster
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« Reply #6 on: February 12, 2016, 08:56:32 PM »

Very nice Rich.

I know you said that this model is going to be electric powered, and this the Gas Model section, but tell us about the power unit.

John
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Starduster
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« Reply #7 on: February 13, 2016, 07:39:59 AM »

Very nice Rich.

I know you said that this model is going to be electric powered, and this the Gas Model section, but tell us about the power unit.

John

Hi John.

Thanks!

I'm going to use the same power set-up as I use on my Starduster 600 and my Pimenoff #18:

Motor - Cheatah 2212-06
ESC - 36 Amp
Battery - E-Flight 3S 11.1v 1350mVh
Timer Dans Timer

Seems to pull the other two airplanes pretty well, so I'm sticking with what I know. (I do, however, think that serious power flyers would find my airplanes to be "under powered")
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« Reply #8 on: February 13, 2016, 03:03:56 PM »

Are those parts cut as accurate as they look?? Must be fun building!
DDock
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« Reply #9 on: February 13, 2016, 03:23:54 PM »

Are those parts cut as accurate as they look?? Must be fun building!
DDock

Yes, they are very accurate. And yes, it does make for a fun build. Even the leading edge sheeting is laser cut and fits well.
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« Reply #10 on: February 13, 2016, 06:20:51 PM »

I see Bob Holman is advertising the kit with a picture of my model!

The royalty cheques will be flowing shortly, no doubt.

John
p.s. I am kidding, of course.
p.p.s. I am almost tempted to build another (i.e. a 3rd) - not kidding this time.
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« Reply #11 on: February 13, 2016, 06:48:01 PM »

John,build a half A one for the Golden Age event.Would look mighty cool.
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« Reply #12 on: February 15, 2016, 02:09:23 AM »

I though of that Bruce, I've even drawn it up!
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Starduster
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« Reply #13 on: February 15, 2016, 09:56:49 AM »

The wing is coming along nicely

The construction is basically done. I am now shaping the leading and trailing edges.

And, I'm probably the last modeler that knows this:

I also love to cook, and one day, I was looking at a "Microplane" that I use to shave chocolate. and thought, "Hmmmm... leading and trailing edges, I wonder how this would work?"

Well, my Microplane now has a new home. I also did a Google search and I see that Microplane also makes them specifically for wood work.

Not only does this make shaping easier, it almost makes it fun! You have to be careful not to take too much off, though, it is easy to get carried away.
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Starduster
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« Reply #14 on: February 17, 2016, 10:46:11 AM »

Wing, Stab and Fin/Rudder all done, ready to cover.

Laser cutting really makes it fast and easy!

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Re: Night Train Mk VII Build
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Starduster
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« Reply #15 on: February 17, 2016, 10:57:35 AM »

Starting on the fuselage.

I may cheat a bit on the fuselage, though...

Even thought the kit has the fuselage sides, top and bottom, the original has a constant taper from the nose to the tail. I always end up with "banana" fuselages when I try this (Pimenoff #18 as an example). So, I think I'm going to do a standard "Starduster" type fuselage construction, and use a constant width from the nose to just forward of the stab mount. This way, I can hold down the fuselage side as I add the longerons and bulkheads. Seeing as how I am not planning on entering the airplane in any vintage FAI events, it makes the construction much easier and accurate.

A couple pictures of the fuselage so far:

1 and 2: Forward fuselage with the battery box and the pylon with the cutout for the battery box

3: Aft fuselage on the plan
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Re: Night Train Mk VII Build
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Starduster
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« Reply #16 on: February 19, 2016, 10:59:01 AM »

Fuselage coming right along. Firewall mounted, Fin/Rudder attached.

Man, this just seems like a long, long fuselage!


Now the challenge is to figure out where to put the electronics...
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glidermaster
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« Reply #17 on: February 19, 2016, 12:31:50 PM »

You're making fine progress Rich.
One minor question; in a couple of pictures of the wing, there seems to be a bit of leading edge sheeting missing at the very tip, but in a close-up of the Microplane in action, the missing piece seems to be there. Did you Microplane a bit too enthusiastically?

John
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Starduster
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« Reply #18 on: February 19, 2016, 01:48:08 PM »

You're making fine progress Rich.
One minor question; in a couple of pictures of the wing, there seems to be a bit of leading edge sheeting missing at the very tip, but in a close-up of the Microplane in action, the missing piece seems to be there. Did you Microplane a bit too enthusiastically?

John

Good eyes, John!

Well, yes and no...

I actually made an error and forgot to taper the top spar (as it approaches the tip) before I attached the sheeting, so when I started to shape/sand the tip, the 1/16 sheeting was way too thin near the tip (too thin, like zero) I will probably add the sheeting back on before I cover the wing,  though.
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Starduster
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« Reply #19 on: February 19, 2016, 03:40:50 PM »

I see Bob Holman is advertising the kit with a picture of my model!

The royalty cheques will be flowing shortly, no doubt.

John
p.s. I am kidding, of course.
p.p.s. I am almost tempted to build another (i.e. a 3rd) - not kidding this time.

Hey, John

Can I ask about your flight set-up for your Night Train? It would be nice to have a starting point once I start test flying.

Thanks
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« Reply #20 on: February 19, 2016, 05:44:24 PM »

Great job, Starduster! You're defiitely on the right track with this one! (pun intended!) Smiley
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« Reply #21 on: February 21, 2016, 10:52:41 AM »

Yesterday, I spent the day fitting the electronics.

This morning is was Sunday Baroque and a couple hours with the covering iron:

All that's left is to apply the finish to the fuselage.
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« Reply #22 on: February 24, 2016, 11:04:00 AM »

Nice job - I wish I could build that quickly.

On the wing tip joint, it looks as though you fit the 'join' rib to the tip before attaching the tip to the inner panel.
Does that mean that the ends of the top sheets of each panel are both resting on that rib?

Robin
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Starduster
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« Reply #23 on: February 24, 2016, 11:27:24 AM »

Nice job - I wish I could build that quickly.

On the wing tip joint, it looks as though you fit the 'join' rib to the tip before attaching the tip to the inner panel.
Does that mean that the ends of the top sheets of each panel are both resting on that rib?

Robin

Hi Robin, Thanks!

If I understand your question, then yes, the sheeting is on the "join rib". I first fabricate an angle guide that is one-half  the dihedral (or polyhedral) angle, then carefully sand the panel joints to match, then I add the dihedral braces and the join rib. I then glue the whole thing together. You can kind of see this in the first couple of pictures in post #13.

Rich

(BTW - The Night Train is about 30 minutes work away from being ready for test flying. Just waiting for warm weather now...)
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« Reply #24 on: February 24, 2016, 12:31:36 PM »

Hi Rich,
I noted your query about set-up.
I will have to put the models together and measure them again, because I seem to have lost my notes on the subject.

Are you putting VIT on your model, Rich?

John
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