Uncle Les Builds a Quad Tilt-Rotor Aircraft

[Logan Hartke]

That's gorgeous!  Well done!

Cheers,

Logan

[taiidantomcat]

  pure beauty 

[uncle les]

Thanks guys, yeah it turned out OK but now looking at it in retrospect I think I needed to make the prop diameter larger ( and make the props better as the 3D process is a bit rough).   Heck - I was in a hurry ( as usual..)  The mechanics of the wing movement also needed more of a logical approach for it to be engineeringly plausible, but I just wanted to mate two V22s in unholy wedlock so we gets what we gets !!!     We learn - move on.
As for which kits I used - I have/had two Hobbycraft and one Idea repop which were built before my 15yo daughter was born ( so there's an indication of how old the orginal kits are !! ) and over time have become damaged and were relegated to the spares facility in the hope that one day I'd do something with them.  That day came last Saturday after I trawled the tilt-rotor thread here on BTS and got the spark of inspiration.

[Volkodav]

What I have seen done with 3D printed prototypes is they are smothered in liquid cement to better bond the layers and then sanded.  You just need to factor extra material in for the sanding process.

[uncle les]

What I have seen done with 3D printed prototypes is they are smothered in liquid cement to better bond the layers and then sanded.  You just need to factor extra material in for the sanding process.

...and extra time.   I'm just too much in a rush !!   
I demand near-instant three dimensional scale modelling gratification from whichever medium chooses to get in my way !

[kitnut617]

Part of the Canadair CP-107 u/c set I've just bought includes some props for it.  I can feel that the surface of the blades is like some fine sand paper, but it's not very easy to see but you can see it in the photo.  Are all 3D Printers equal or are some better than others ?

[Volkodav]

Some are definitely better than others.  The one I am experienced with was a product of the late 90s, was big, expensive and used in an R&D lab used primarily for prototyping functional valves and mechanisms that could be tested at low pressure / loads to prove a concept.  There are now desk top 3D printers you can buy for a couple of grand that out perform this machine in every way. 

[uncle les]

Are all 3D Printers equal or are some better than others ?

I only have experience with my UP3D - which prints to 0.15mm res, so I can't speak for other brands.
I consider myself relatively a n00b in this field, my experience being mainly 30+ years in cottage-industry level low run resin production at non-commercial hobbyist standard.
I have already seen a difference between the finish on the same item printed  between different spools of ABS indicating the melting point has an impact.  More experimentation is required - the atomised acetate technique, the MEK bath,  rigourous sanding are all methods that can be employed to smooth out the surface, I'm still having way too much fun rendering and printing at this stage !!!

[Volkodav]

I would really love to get into it myself but priorities don't permit it at them moment.  Been interested in CAD/CAM for a couple of decades and have kept my CAD skills up to date until recently.  Really would like to give it a shot though and with the ever improving range of machines out there it may happen.

[finsrin]

Previously stated admiration is certainly deserved.  Am onboard with all of it :)
Opposite rotating props are icing on cake of this cool build

[elmayerle]

Thanks guys, yeah it turned out OK but now looking at it in retrospect I think I needed to make the prop diameter larger ( and make the props better as the 3D process is a bit rough).   Heck - I was in a hurry ( as usual..)  The mechanics of the wing movement also needed more of a logical approach for it to be engineeringly plausible, but I just wanted to mate two V22s in unholy wedlock so we gets what we gets !!!     We learn - move on.
As for which kits I used - I have/had two Hobbycraft and one Idea repop which were built before my 15yo daughter was born ( so there's an indication of how old the orginal kits are !! ) and over time have become damaged and were relegated to the spares facility in the hope that one day I'd do something with them.  That day came last Saturday after I trawled the tilt-rotor thread here on BTS and got the spark of inspiration.

Hmm, Hobbycraft must have done some updating of the molds at some point, the V-22 kit I have by them doesn't even have the IRS (Infra-Red Suppressor) on the back of the nacelles, while these nacelles clearly do have it.  Unfortunately, like all 1/72 kits except the new Hasegawa ones, the "elephant ear" scoop, on the upper outboard corner, just in front of the IRS is missing.

Still, a gorgeous piece of work and I speak as a designer on the V-22.

[uncle les]

Also of interest was that one of the three airframes I have had front lower windows as clear pieces ( the one I chose to use for this build) - the other two virtually identical kits have them represented as solid indentations ala Matchbox's HE111. 

Still, a gorgeous piece of work and I speak as a designer on the V-22.

That is indeed high praise - thanks.

Previously stated admiration is certainly deserved.  Am onboard with all of it :)
Opposite rotating props are icing on cake of this cool build

..and this pleases me that you noticed the pitch !! 

[finsrin]

Nice diorama would be Quad Tilt-Rotor, military Rotodyne
http://beyondthesprues.com/Forum/index.php?topic=950.0
http://beyondthesprues.com/Forum/index.php?topic=1580.msg25017#msg25017
V-22, Harrier, Cobra, Appache with vehicles & troops.
oops,,, diorama got kinda large,,, down size as you like !

[ChernayaAkula]

<...>
Now, onto the next whim WIN. 

Fixed that or You! 

[uncle les]

<...>
Now, onto the next whim WIN. 

Fixed that for You! 

Nice..  thanks   :)

[uncle les]

Nice diorama would be Quad Tilt-Rotor, military Rotodyne
http://beyondthesprues.com/Forum/index.php?topic=950.0
http://beyondthesprues.com/Forum/index.php?topic=1580.msg25017#msg25017
V-22, Harrier, Cobra, Appache with vehicles & troops.
oops,,, diorama got kinda large,,, down size as you like !

Oh great... you had to go and draw my attention to these..     now my right hemisphere is finding it hard to keep up with the left.