paave Posted July 20, 2015 Posted July 20, 2015 (edited) 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 Quote
zver Posted July 20, 2015 Posted July 20, 2015 Excellent mechanics! I like that it is made very compact. Quote
Epic Technic Posted July 20, 2015 Posted July 20, 2015 (edited) 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 Quote
paave Posted July 20, 2015 Author Posted July 20, 2015 Thanks! I'll try to show inside mechanics soon when I'll take it apart. Quote
TheItalianBrick Posted July 20, 2015 Posted July 20, 2015 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!!! Quote
Jurss Posted July 20, 2015 Posted July 20, 2015 Almost perfect, unly problem, that it can't fly ... Quote
RohanBeckett Posted July 20, 2015 Posted July 20, 2015 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 Quote
Graydingo Posted July 20, 2015 Posted July 20, 2015 ^plus one on the ratchet mechanism, but what a 'copter! This is really neat! Quote
paave Posted July 20, 2015 Author Posted July 20, 2015 Thanks for your feedback! I'll keep in mind the idea of ratchet mechanism if I create more helicopters in future. Quote
Karle Posted July 20, 2015 Posted July 20, 2015 (edited) 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 Quote
Jeroen Ottens Posted July 20, 2015 Posted July 20, 2015 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. Quote
BusterHaus Posted July 21, 2015 Posted July 21, 2015 Great job replicating this helicopter! I remember working on one in school - the bubble seemed so close when you sat inside. Quote
aeh5040 Posted July 21, 2015 Posted July 21, 2015 Great work! Getting collective, cyclic, and tail rotor pitch in such a small space is impressive, and with realistic controls too. Quote
sm1995 Posted July 21, 2015 Posted July 21, 2015 Those are some stunning mechanisms. Very impressive. Quote
Good old Lego builder Posted July 21, 2015 Posted July 21, 2015 Very impressive. Love how you have incorporated all the functions! Quote
kieran Posted July 21, 2015 Posted July 21, 2015 That's incredible, very nice how you managed to fit it all in Quote
Foggy Posted July 22, 2015 Posted July 22, 2015 After the bell uh-1 made bye one of us (don't remember who was..) this is an amazing copter! Hat off ;) Quote
Karle Posted July 22, 2015 Posted July 22, 2015 Technically it's a Bell 205. The UH-1 is the Army's designation. Quote
Jim Posted July 23, 2015 Posted July 23, 2015 Welcome on EB! And a nice job on the Helicopter. The mechanics are well done Quote
steph77 Posted July 24, 2015 Posted July 24, 2015 (edited) 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 Quote
CP5670 Posted July 24, 2015 Posted July 24, 2015 Great model. I especially like what you did for the tail rotor's collective motion, which is hard to do at a reasonable scale. Quote
miguev Posted July 25, 2015 Posted July 25, 2015 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. Quote
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