JoKo

That's a high level contest. Very impressive models. Beside the contest aspect we made all together a very nice collection of mini models. I'm proud of taking part in it. I hope someone from TLG will have a look at them. I think that a scaled down Technic set would be more interesting than a recolored one like the bugatti bolide. Well done everyone! And a big Thanks to @Jim!

I am sure we would all enjoy to see this plane finished even if it's after the contest deadline.

Yeah. I hope originality points are not about the model choice: We had to pick a model from a limited amount of models: big enough to have multiple function. There no real "thinking outside the box" in that. @Jim Do you already know how you'll pick the jury? How many judges? And people with good Technic expertise but not involved in the contest?

Just after pretending I was done and posting pictures I realised the rotors were too small since I switched scale to 1/2 with everything but them. Making them bigger allowed me to set the blade with pitch angle just like the big one. Since I had to make a new photo shooting I also took the time to improve the stickers "Et voilà!"

I did the same on the Osprey's tail without thinking it could upset anyone... I have to confess that in my opinion some official sets would look better with this too. Wouldn't upset me as I usually remove every sticker when I turn a set into pieces.

42113 Bell Boeing V-22 Osprey Functions: - Fast spinning rotors: geared up 8 teeth knob on the top. - Swivel motors and rotors: geared down 12 teeth knob on the top with articulated quadrilateral for friction and stops. - Folding landing gear: small linear actuator and 8 teeth knob at the rear. - Two elements cargo door: small lever under the aircraft and linkage. Stickers are from 42120 hovercraft (tailored, on the engines and tail) and from 42020 helicopter (blade tips) Discussion topic:

I know that no electronic is allowed but I'd like to use an external (out of frame) motor for the vidéo. Should we allow that?

It will work with manual knob to drive the rotor but will behave weird if you push a blade with your finger to rotate the rotor. I' not sure that it can be more compact than the original collective mechanism though 🤔

I'm not sure what @HydroWorld Outlook means, maybe he can show it with a picture. Anyway there is a way to make variable pitch propeller with bevel gears but you'll need a complex mechanism including two differentials in a substractor. There is an exemple on my Napier Lion airplane engine: I tried with 2, 3, 4 and 6 blades but should be possible with 5 with the new starfish piece Let me know if you have any question about the mechanism I used.

Thanks! Yeah, just because is was made in four days don't assume it was made in a few hours... I'm able to binge build hard! OK, I am "done" with this Osprey. I had an unexpected problem withe the centre of gravity. Because the original has a battery box and motor the landing gear position is fine but mine is tail heavy and I needed no fill empty space at the front just for balance. There are notably stacked system plates in the nose to make it somewhat stable.

Thanks! And that's a good thing, isn't it?

I understand the borderline thing about the Osprey. Because it was still officially released and sold before cancelling I thought it would be accepted. I think it's like the LR13000. borderline choice but great for the contest. I dont't think there is a bigger advantage as choosing some other iconic technic set. @Jim Could you give official answer as I did quite a lot of work already...?

There is still some work to do on the body The video is quick and dirty to show progress and an edited video will for sure be in entry post I'll probably make a colored model to explain mechanisms and also digitalise it because I'm starting to love it!

Good start! I didn't even try to keep the gearbox on my Osprey but for a crane this could add to playability and maybe a few more points for staying mechanically true to original.

Thanks everybody! Now every function works. I had to invert the front landing gear deployment motion. But I could fit a double cargo door like the original. Top door doesn't move much but the mechanism is there and works.

Thank you! Yeah, I picked that one because I will never have an Osprey on my shelves... But I can make my own mini one! Thanks, I would like to refine it but shape and "color filling" are OK Thank you both for your kind words! The new panels are helpfull for small shapes, I love them! I think I would add some system pieces now to refine the model but I still have some work on the functions before finishing the outside. Beside the elbow-macaroni assembly I procrastinated to build the front because It's the most visible part. That's why it looks unfinished.

Thanks! At this scale and within contest rules and goals there is no chance I try this. In the current state there is already a knob at the rear to control landing gear. latest pic:

Thanks. I'm not sure with the elbow neither but it's supposed to represent the orange nose and not the windshield. Thanks, did you have cool ideas that you could send me a picture of if you won't finish it. Is it cheating? Thanks, the engine rotation was a subject for sure, landing gear is not straightforward neither and I'm looking forward to the double cargo door! Update: I adjusted scale to half size For pieces availability reason The dark blueish gray area is black with dbg lines, the light blueish gray bottom remains lbg

Edit: direct link to instructions: https://rebrickable.com/mocs/MOC-164382/GerritvdG/42113-bell-boeing-v-22-osprey-mini/#details I'll go with this one because I'll never have the real one in hands. I scaled it to fit simple 3 blades propellers like the rear one on the Airbus helicopter. That's a 2.2 shrink factor.

I have some from Batmobile. I'm not planning to build ten shuttles... No lightbrick seems fair !

I might choose the 8480 Technic space shuttle. It had that fiber optic glowing thing at the back. Using a red lightbrick to replicate that would be nice but it sounds like the no electronic no led rule doesn't allow that. What do you think?

@Jim Great! A new contest! Since there is a limited number of big Technic sets, Is it allowed to choose the same original set than someone else?

Hi You all know I like fake engines with more than just pistons and cylinders. This is my version of the Napier Lion. The Napier Lion is a british 12-cylinder, 'broad arrow' configuration aircraft engine built by D. Napier & Son from 1917 until the 1930s. A number of advanced features made it the most powerful engine of its day and kept it in production long after other contemporary designs had been superseded. It is particularly well known for its use in a number of racing designs, for aircraft, boats and cars The challenges were to build the three cylinder rows geometry and the triple rods crankshaft. I had to use quite long connecting rods to keeps the cylinder rows far enough from each other. The engine features double overhead camshafts driven by axles and bevel gears. This kinda hides all the pistons, I should maybe have used transparents cylinders for this one... Since just camshafts wasn't enough I added a propeller with a variable pitch mechanism using a substractor again (I have a weird soft spot for thoses) The knob low on the right side changes the blades angle between 0° and 90°.

Hi you all! This is my new elaborate fake engine inspired by the Ford flathead V8 It features full valve-train again with a central chain-driven camshaft (thanks to the new blue 12 teeth gear) and 16 valves in the signature flathead pattern. Intake valves are gray and exhaust valves are yellow. The crankshaft is quite usual fake engine pieces but the connecting rods are built to be twice as long as usual. The left cylinder head is hinged to show the movement of the pistons and valves. The spark plugs wiring is made with 0.8/1.6 electric whire (non-lego). The huge light blueish gray intake box (between the engine and the carburator+my favourite air filters) is inspired by landspeed racing engines and this video mostly. https://youtu.be/sJWtjChXbOwImprovement from my last similar creation is ease to build and tune, valvetrain reliability and esthetic (at least to my eye). It does'nt need any rare piece to build anymore and the valvetrain is now reliable without string or tricky technique. The last flaw of this design that I can't fix is about valve timing. Because of size and lego restrictions I have to use the same cams on the camshaft for both cylinder rows and because of engine configuration it can't be set to do a proper job on both. First I divided the error and had a side with valves a little late and little early on the other side. It annoyed my inner perfectionist and I decided to hinge left side only and set "perfectly" the valve timing on the cylinders that can be seen. (currently working on a configuration where this could not be an issue but that's no V engine) I'll make a digital version and valve timing tuning instructions if there's interest

Thanks everybody! Yeah I did this one too. And I've seen a pretty F1 and a LMP car also. At this scale they are perfect. At first I meant the flex axle to figure some kind of windshield but seeing this as an open cockpit with big air scoop and halo-like protection makes more sense. Yeah... the sidecar and the deltawing are not made with the same set... already bought 2. I fixed the engine giving it a full 3 cylinders middle row. I learnt that this configuration was used in airplane engines like the Napier Lion (1917). It was called broad arrow because of the shape like a downward arrow. Same engine was used for race cars and landspeed records. I also filled some panel gaps at the front. And look at this! There is even a video! Sorry, the black on black mechanism is invisible. I swear it was visible before Youtube compression...