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Old Jun 02, 2011, 07:58 AM
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jean-claude Terrettaz
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Great project Herb. As usual. If you need a doors sequencer let me know.
J-C
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Old Jun 03, 2011, 01:00 AM
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Lee Liddle
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Herb, I'm enjoying your build. The 262 is one of my favorite jets of all time. Looks like a great flier.
Old Jun 03, 2011, 12:24 PM
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Thanks J-C and K-N

Although there's quite a bit of work involved in getting this thing ready, it is a very well engineered, strong (and very light!!) airframe.

I was able to get some work done on the nacelle mounts. They will carry quite a bit of weight and thrust, in spite of the fact that I am going for the lightest possible fan/motor setup (440g per nacelle).

The nacelles have to be mounted very rigidly for at least five reasons : a) overall motor & fan weight, b) applied thrust @ 2500W, c) motor and fan vibration , d) nacelle rigidity & issues related to fan noise, and e) twin fan resonance.

For these reasons I used two large stainless steel bolts with ply & g10 fiberglass mounts at the front, and just ply at the back.

.
Last edited by Herb; Jun 29, 2011 at 04:36 PM.
Old Jun 03, 2011, 12:25 PM
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The wing mounts require two lightweight ply plates front and back, that will be next.

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Old Jun 03, 2011, 12:36 PM
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The Robart airvalve has been tested as a unit - and seems to work fine, hopefully there shouldn't be any problem there ... more pressure test later.

I will think about the pneumatic brake lines later.

.
Last edited by Herb; Jun 06, 2011 at 05:59 PM.
Old Jun 03, 2011, 12:40 PM
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The canopy frame was slowly and patiently cut out with a dremel ... Fritz can now see what's outside

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Old Jun 03, 2011, 12:42 PM
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I measured all the required linkage lengths, and started to install the various servos mounts, which had to be manufactured out of ply.

.
Last edited by Herb; Jun 07, 2011 at 02:43 PM.
Old Jun 03, 2011, 12:47 PM
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The Me-262 is ready to be put on it's feet to check the length of the nosgear strut one more time.

After the nose strut length has been found to be ok (as it seems), it will be tapped for some (4) set screws.

.
Old Jun 03, 2011, 12:49 PM
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With the nacelles & wheels on, and the canopy cut out, it is starting to look more like an Me-262 !

.
Old Jun 03, 2011, 01:30 PM
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... ordered fans and motors - should be here in less than a week
Old Jun 04, 2011, 12:38 AM
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That's one sweet bird! My fans are still a ways off...

What are you planning for the cockpit? I sure wish inZpan made a 1/6th Me-262 insturment panel.
Old Jun 04, 2011, 09:18 PM
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I will do the cockpit the old fashioned way ... scratch-built, after the Me-262 has flown

It would be cool to have a canopy that can be opened, but it seems more an internet flying project, the whole canopy would become just too delicate for everyday flying.

In any case as I said I will start worrying about canopies and cockpits after the maiden.
Old Jun 06, 2011, 05:58 PM
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Spent a few evenings making various ply servo mounts,

.
Last edited by Herb; Jun 06, 2011 at 06:13 PM.
Old Jun 06, 2011, 06:01 PM
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Hopefully a small airtank will be enough just for the brakes (on a separate air circuit),

.
Old Jun 06, 2011, 06:03 PM
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Fans are twin HET-700 90mm fan shrouds (40mm i.d.) with WeMoTec Pro rotors,

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