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Old 11-08-2010, 08:21 PM   #1
hoot
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Default The Official Rotormast "V22 Osprey" Build Thread

This is one heck of an engineering achievement. It really does take off like a helicopter and fly like an airplane. Not only that, it does it with ease. The onboard controller works all the magic to make this thing perform like no other tandem rotor aircraft out there.

I'm trying to consolidate the information from a few stray threads into one build thread so we don't have to jump around.

The model has arrived and is being built by a bunch of us. A few are flying as now! I have not been able to devote as much time as the others so I'm not there yet but I am taking pictures as I go.

Anyone else in their build who would like to contribute feel free to do so.

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Old 11-08-2010, 08:27 PM   #2
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Nacelle mechanics almost complete.












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Old 11-08-2010, 08:28 PM   #3
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More Progress










External control pot for conversion servos


Last edited by hoot; 11-14-2010 at 09:56 AM..
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Old 11-11-2010, 05:31 AM   #4
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I'm just getting around to installing the conversion main bearings into the ends of the wings. I have a good method I think for aiding in the install. Pictures coming.
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Old 11-12-2010, 04:05 PM   #5
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There are four bearings in bearing holders in each wing that the nacelle conversion arms ride in for rotation. You red locktite the bearing into the holder then epoxy the units into the wing. Later versions will have these pre-installed. Either way this is a step on the road to first flight for me.

Note the panel lines impressed into the wing surfaces.








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Old 11-15-2010, 04:28 AM   #6
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Splicing in the capacitor onto the ESC.

Note capacitor polarity. Most caps have a sripe down the side indicating negative. Also the negative lead is usually shorter than the positive one.

You poke a hole through the insulation, I use a pointy exacto knife. Watch your fingers. Once the blade is through I spine it to spread the wires to help get the cap wire through.

Remove some insulation on the opposite side for soldering.

Use a needle nose to push the wire through and solder the back side.

I added the shrink on the cap leads. This was not in the instructions. I just don't like bare wire showing.














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Old 11-16-2010, 07:21 AM   #7
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very interesting build
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Old 11-16-2010, 07:51 AM   #8
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The additional capacitor adds capacitance due to the longer wires from the battery that's mounted on the fuselage. The power wires from the battery go through the wing and out to the speed controllers out in the nacelle. Castle recommends the additional cap. Note that there are already two stock caps factory installed. This helps control DC ripple when a switching amp is in the circuit I'm told.
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Old 11-17-2010, 04:06 PM   #9
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Fuselage has arrived


























Magnets and pins hold the front access portion very securely..





















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Old 11-21-2010, 07:16 PM   #10
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OK got most of the nacelle wiring completed. The ESC's are mounted as well as the wire distribution board. Did a trial fit of the cowl. It's snug. Won't need many screws to hold it on.













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Old 11-25-2010, 09:17 AM   #11
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Wow, that looks like one neat kit!

Check out Digikey for low-esr add-in caps....get some 'samples' for free
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Old 11-26-2010, 10:47 PM   #12
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Getting the conversion mechanics installed....


Installing the conversion servo.





Installing the external POT assy.


Servo bracing installed.


Conversion rack.












Nacelle spindle retainer clamp.


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Old 11-29-2010, 04:03 AM   #13
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Old 11-29-2010, 12:58 PM   #14
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Damm, I want one of those, is this a kit?
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Old 11-29-2010, 01:02 PM   #15
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Quote:
Originally Posted by nwolsink View Post
Damm, I want one of those, is this a kit?

Yes.

Go back to the beginning of this topic and watch the youtube video.

www.rotormast.com
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Old 11-29-2010, 08:37 PM   #16
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Some wiring action going on. Not too bad. Instructions are pretty clear.
































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Old 11-30-2010, 02:07 AM   #17
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Nice Job!!!
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Old 12-01-2010, 06:07 AM   #18
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Wow this is really something to see. Great work bad thanks for keeping us posted.
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Old 12-02-2010, 10:33 PM   #19
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Building up the aft section.

Remove the paint..





Temporary jig.






Glue aft section to empennage




Start mounting components onto profile fuselage...

Needed a mount for the GY520's




















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Old 12-03-2010, 01:44 AM   #20
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good job and wait for more picture
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