steph77

HI, I do Moc essentially airplanes helicopters...and such things. The first thing that comes in my mind actually looking at your work is that you do not begin with the appropriate thing. You should have a general view of your concept, a good scale for your model and most important of all a prototype of the cab frame and wings. In such a Moc, the essential difficulty will result with the structure that must goal with design (rouded shapes) and resistance (structural design) Once that's done, you will be in good position to integrate all equipement and motors. Good work!

Thanks Jim for ediding my post. I'll try to understand what was wrong. This is absolutely not an 42006. I use the arm of that set, but larger. The whole set is larger than the 8043. The motorisation of the set is the first interrest of it. I use one only L motor that is able to run all function at the same time The engine is able to put all the function and movement in every direction without intervention on the switch BB. The playability is thus much more efficient.

Hi everyone, Let me present to you a model of one full motorized excavator. That excavator is using a single L PFS motor and reversed gearboxes able to run all functions at the same time. I build that one few month ago, maybe some of you have already seen the vid on you tube. I only present the vid here, pictures are not possible anymore since this model has been put in parts some weeks ago.

the construction would get messy quiet fast and be unequilibrate.... Have a look at the topic of my huey.I used a double synchronised linkage. Maybe it could help you. topic : 68431

Hi , I am very impressed with your work , especially by your mastery of drawing by computer. Great work. However, to have built myself several functional helicopters, I see two major problems in your installation . The first is the binding of the mat of the rotor with the top part of the swashplate . You should create a physical and articulated connection , a mechanical training compass. It is imperative to create this piece because without it the rotation will generate a lot of vibration. Note that fixing the compass must absolutely be made to the plane of the swashplate ( see below) The second problem, which is not the least of which is that it is absolutely neccessary that your swashplate is a perfect plane between the ball joint of the low bet and the ball joints of the upper part of the swashplate . Again, your installation will generate a lot of vibration. In a general way you also must minimize the weight , the mass, of the rotating parts to minimize the problems of vibrations. In short, everything is history of equilibrium mass and homokinetism in the building. And, I know, it's much easier said than done! Otherwise, have you looked at the command system that controls this all? This part of the design is also difficult. from my experience, be careful at the outset points: First set the point of attachment of the rotor mast highest as possible. indeed lego axes are flexible and do not help to solve vibration problems. secondly, ensures a secure and perfecty guided mechanism (vertical and tilting) for your swashplate. this for the same reasons ... Finally, avoids toothed parts in your kinematic chain commands. they generate small 'play' in the mechanism that are really harmful to the proper functioning and stability of the whole. Therefore only uses systems linkage secured and guided. Well, good luck to you, do not hesitate to build a real model, you will quickly realize what I mean with my stories of vibration ... @+ !

I finally came out with the video of this car. Here it is [/url]I know that the tires may be a little small but i do not have the upper scale ones. Whatever this model makes my son happy but today my house was full of a large range rage motor sounds...at 05.00 AM

EDIT : Yes it is.

Hi, maybe you will be interressed by this http://www.eurobricks.com/forum/index.php?showtopic=68431&hl=huey&st=50 Cyclic and collective full operational.

Hi everyone, I am not sure but i think that some comments are not for my Moc in this Topic! But thanks for those who said my Moc was great!

Hi everybody! I would like to present you my brand new Moc It is based on a porsche 997 GT3. The model features: - 4 speed gearbox - Flat 6 factice engine with very high RPM - Opening doors bonnet and trunk - Steering wheel connected in the cockpit The red lines and color touch add dynamic effect on the car Bottom view with the organization of the flat gearbox forcing the frame around the obstacle. The frame is made with studless beams laid flat for rigidity and enhanced collaboratively by the pavilion roof 'nesting' structure The opening of the pavilion with the rear fan suggested Detailed cockpit with functional steering and the ergonomy of the gearbox And opening the front cover with endurance look for broad access. Hope you'll like it. Enjoy. Steph

Oops, I think he is distracted just like me positioning the mercedes badge upside down

Facelift for this truck! I based my work on a Mercedes Actros model. Here are the pictures

I everybody, first of all best wishes for this new year! Some news about this Moc. I add on it two new motorized function with a liftable flatbed in two separate sections. I also add a telescopic section on the crane and a winch. at last i add a new snowplow design. I hope you'll like it. regards Steph.

ok, I have some explanations for you. There are four gearboxes. The first one, located above the fake engine is use as a 4 speed gearbox.Manual The second, located left side in the midle has two functions : stabilisators and PTO 1 in the front of the truck (used for the snow plow) The third one, located right side is used for the crane rotation and for PTO2 (usedby the snow plow) The last one, located at the rear is used for the two function of the crane. the last three gearboxes are driven simultaneously by the M motor. Gearboxes are engaging the functions, the BB is used as forward/reverse choise once the function selected. The 4 speed gearbox in the cab is driven by the rear wheels. The design of the crane is dependant of the wheight and the cynematics. 8258's one is very cool designed but not as much efficient. I wanted to have great functionalities first. Thanks for all your comments. EDIT: this truck was designed to be used by my 5 years son . it was neccesary that the moc was very simple to use and safe . Clutch are used everywere and every command has 1 function only...

Yes! that's true. Looking at the inside it's a lot of fun, gears, gearbox!

Hi everybody! I am back with a new project i would like to present here. This is a crane truck motorized with only one power function M motor. here are the functions of these MOC: -Motorized stabilisators, -Motorized rotation of the crane, -Motorized first section of the crane, -Motorized second section of the crane, -Motorized snow plow up and down -Motorized snow plow orientation, -Direction on both first and third axle with reduction at the back one -functional wheel in the cab -liftable cabin -flat 8 factice motor -gearbox with 4 speeds -opening doors with handle -opening panel on the skip with handle, Not present in the video ( i'll ad some pictures later) -Extendable section on the crane, -Led lights, -New snow plow design I hope you'll enjoy it. Here is the video: Thanks for watching!

Hi, From my experience in this domain i have a some things that can help you. Thirst, the connector between the blade and the swashplate must be absolutely vertical to avoid exessive 'play' in the mecanics. Always test the movement in rotation AND while not in rotation. The angle in your connector create resistance by centifugal effect when rotors rotate. Second: all the cynematics of the command from the cockpit's command until the swashplate link must be undeformable, and very precisely controled. It's very important that your construction avoid one and only one movement possible. Never use gears in commands, always articulated connectors. Think to 'block' in a perfectly vertical and only movement the pieces between the command and the swashplate. And last but not least, all of this will not work proprely if there is resistance in the blades movement at the junction with rotor head. Think to create articulation with as less resistance as possible. On your fotos i can see the articulation bounding with the weight of the blade... If you still need help..... EDIT : i think also tha the syncronisation system between the rotor hub and swashplate is engaged in your problem. try to insert my solution (on the huey) or realised a system in double to equilibrate the force while in rotation. a video could be usefull to see what's wrong with your model. END EDIT

hi everybody, here is my update to my project. The hiller-bell stabilisation control bare is now fully functional. note that despite of a full fredom of movement the rotor incline itself following the command of the cyclic control.

Hi! That's great job you've done there... I'am passionated abaout helicopter, and i think that two videos will have your interrest. The second one is well at your Moc scale i think. Whatever, well done! @+ Steph.

Hi everybody, I'm back with a new project. It is still at preliminary stage. Here are the tests of the flight commands. My link

Yes i would do that. I've no choise becouse the lego swashplate needs to be fixed by 3 points. Actually i've realised a prototype of the whole command mecanism. It's ok for the functionalities but not with the scale of that all. It's actualy bigger than the Huey complete structure! Need to be compacted. More infos in a new Topic coming very soon. I'll also post new photos of the huey who gets new rotor head fully articulated. Coming soon so. @+

That's partialy truth. It has a trim that auto-regulate the forward/backward cyclic movement in function of the airspeed of the aircraft. That's automatical and éléctronics. The real challenge is in the commands and the mixing unit that mix collective and cyclic movement. Thanks for the links you posted, it's very interresting!

I didn't understood that. If you mean that blades are folding while engine are off : answer is yes If you mean that blades can be folded to take less place on storage : answer is yes too

Hi everyone! I got new project currently. It will be an helicopter again but quiet more exiting in technological design. I'am working on a CH-47 CHINOOK model. I didn't have onother swashplate actualy, and i don't want to take the Bell's one. So did someone have an idea to build a homemade swahsplate? May be someone has 2 of them to let, th'ats another issue to this problem. Last but not least the original model as 3-blades rotors...That's a very complex problem. Official parts are ok for 4-blades rotors. Thanks for your help. Steph.

Here is my vote. First of all you have made great job. Difficult choise. However, here it is: 6)1vote. 9)2votes 13)2votes 14)2votes steph.