[MOC] Bell 47 Helicopter

[paave]

Hello, Eurobricks. I'd like to present my MOC: LEGO Technic Bell 47 Helicopter.

Features:

• realistic rotor and stabilizer bar
  
• working swashplate
  
• anti-torque pedals
  
• power functions
  

Functions:

• cyclic blade control
  
• collective blade control
  
• adjustable tail rotor pitch
  
• rotation by L-Motor
  

Here's the video demonstrating the MOC's functions:

Edited July 20, 2015 by paave

[zver]

Excellent mechanics!

I like that it is made very compact.

[Epic Technic]

Very nice! all the realistic control are there which sure is not easy. Could you show us some pictures of the inside mechanisms?

Edited July 20, 2015 by Epic Technic

[paave]

Thanks! I'll try to show inside mechanics soon when I'll take it apart.

[TheItalianBrick]

First time I enjoy an elicopter!!! This is simply wonderfull...all those mechanisms!!

If you could motorize also the manouvring levers it would be epic!!!!

great Moc!!!

[Jurss]

Almost perfect, unly problem, that it can't fly ...

[RohanBeckett]

Very good! you might want to adopt the 9396's 'ratchet' mechanism, with the main drive motor.. so that when you turn the power off, the blades gradually slow down, and don't come to an abrupt stop!

RB

[Graydingo]

^plus one on the ratchet mechanism, but what a 'copter! This is really neat!

[paave]

Thanks for your feedback! I'll keep in mind the idea of ratchet mechanism if I create more helicopters in future.

[Karle]

I flew the TH-13 (military designation for the Bell 47, T indicates trainer) back in the late 60s while going through US Army flight training. Compared to the turbine powered Huey, they where woefully under powered ships. You have really captured the spirit of the bird, including not being able to get into the air on hot, high density altitude days.

Edited July 20, 2015 by Karle

[Kelkschiz]

Good work dude and welcome to EB!

[Jeroen Ottens]

Very nice helicopter. You managed to squeeze in a fully operational rotor while keeping the model nicely proportioned. Impressive

My only nitpick would be the pull bar made out of axles at the rear-rotor. That only works because of the friction in the lego elements.

But other than that, very well done.

[niknarjc]

Love it.

[BusterHaus]

Great job replicating this helicopter! I remember working on one in school - the bubble seemed so close when you sat inside.

[aeh5040]

Great work! Getting collective, cyclic, and tail rotor pitch in such a small space is impressive, and with realistic controls too.

[sm1995]

Those are some stunning mechanisms. Very impressive.

[Good old Lego builder]

Very impressive. Love how you have incorporated all the functions!

[kieran]

That's incredible, very nice how you managed to fit it all in

[Foggy]

After the bell uh-1 made bye one of us (don't remember who was..) this is an amazing copter! Hat off ;)

[Karle]

Technically it's a Bell 205. The UH-1 is the Army's designation.

[Jim]

Welcome on EB!

And a nice job on the Helicopter. The mechanics are well done

[steph77]

hi,

i saw your copter and tell myself : whaouw! this guy made a relica of the exact movement of the rotor with separates linkages for collective and cyclic movements...great job for that.

What makes me sad is that the Hiller bell mecanics is not complete. The real rotor is fully free of its movements in the real life, yours is a rigid model design (agusta, Westland, etc...) and not a fully articulated.

Another thing is that the stabilisation system i not effective yet.

Making your rotor free (fully articulated) and a well designed sabilisation bare will higly improve the stability of rotation and also make more effective your commands and linkages.

Whatever you made a very good job actually !

It is a real pleasure to see copters on this forum.

Yeah!

Edited July 24, 2015 by steph77

[CP5670]

Great model. I especially like what you did for the tail rotor's collective motion, which is hard to do at a reasonable scale.

[miguev]

Absolutely brilliant! All realistic functions in such a small scale, and all of the implemented in surprising ways. At least I was surprised, specially with the tail rotor variable pitch mechanism.