steph77

Yes, one other Hoover :) Some litle comments compared to your reference model: - The tail section seems fixed too high - the white panel job on the rear part does not exist on the reference model - i would lowered a bit the back fixation of the canopy in order to get a smooth curve Great idea BTW, good work next steps...

finally model rev C is available and posted at mocpages with power shaft of tail rotor and flaps command.

still view some parts are missing. i' ll take my time to check it from a to z.

superb build! I want one,..., IRL just a little thing for me, the rear view mirror looks a bit low, no? one stud up would look more practicable.

oups. I forgot the handle. correction in progress... EDIT : new LDD available :) EDIT 2: second update, the tail power shaft was omitted. please consider the revision B model.

LDD is available here: http://www.moc-pages.com/moc.php/450322 Steph.

Thank you!

IMHO, there Is something looking wrong in this aircraft. It's linked to the weight repartition. Your model seems to be really too heavy in the front area. To be able to lift up a copter has to have his center of gravity just and exactly on an axle passing through the center of the main rotor. Where is the center of gravity on your model?

it looks ok compared to the real life model. But the proportion of this thing, even correct cf in real life, are ...terrible?!? Maybe you could go a bit away from the reproduction and try to equilibrate the design? this aircraft is crying for!

1123 bricks actually. I do not found the front gun under LDD. Did someone know where I can find this? @Ivan_M as for the 169 there will be no swashplate element on the model as it doesn't exist. same for the gun except if someone find it. 169 was already hard but this one is ....worse ;) Steph

WIP: harder than expected as the model is not symmetrical ;)

Ok for me

Yeees! Ok i'll begin the work on that one. Whith this work i'll be able to enhance my presentation too. Thanks Ivan

I hope this one will go further and that you'll find a way to go through the difficulties. Maybe try to solve them one by one?

looks good. Any general view of the whole model?

Not sure i could, but if i got time i could do that ;) The vid will come in it's time. Actually still working on it Thx for comments :)

Back to the project. I spend last hours to solve the rotor's stability under load and rotation. I am now at the same level than my AW169 project and I consider it ok now. To solve these issue I tested separately front and rear rotor. For the main rotor two things happened. thirst the 12 L axle I used was a little twisted. I replace it by a fresh new one from a set of my son (received at Christmas) second this was not enough, I redesigned the whole back support to achieve a 3 point handle for this axle. Front was solved. For the rear one, the issue is more severe. on my 169 I do incline the whole rotor support so there is a constant support of the axle. in this present design that I want different, the axle hangs freely and even with a two point solid fixation it's not enough. to solve it I had a virtual third point by adding one rod between the wheel hub used for tilting the blades and the structures. This add just a little stress (really nearly nothing in practice) that is sufficient to stabilize the support of the axle. The rotation speed and stress on motors are check and inexistent. Some of you asked me for regular pictures. here they are: Take 06 general overview: note that the rotor is one fully articulated one. the position of the swashplate is totally independent of the whole rotor inclination front view. bad guy new rotor head design. 2 studs width instead of 12! on AW169. and it's articulated! the top spring acts as a security for my children (some sort of wheel cable holder on formula one) the machine works perfectly without it, it looks even better without, but security first. Blades are placed exactly in the articulation plan, control rods too to achieve a no-vibration rotation front gunner place. the joystick is connected to the gun for rotation and tilting. the trigger is located on the underside easily accessible and functional top cockpit view. Tandem design allows two separate joystick for a maximum of fun and playability. the two acces to cockpit are on two different sides so the in/out maneuver for pilot and gunner is quicker. going to the back. tail rotor in contrary of AW 169 has now one positive and negative tilting angle available (150% of travel of the 169). next pictures show you max and min position. the command lever is situated at the right side of the cockpit in a symmetrical position of the main collective pitch command. here is a view of the back tail aileron with adjustable flap. inspiration take on the real AH-64 and the Blackhawk. Control by a 12T gear on the left side. Back landing gear wheel is not suspended but rotate with free 360 travel Back top view. The BB integration was a quiet difficult part due to thickness of the global aircraft. it remain easy accessible for switching on/off or replace the batteries Weapon system. two pods are installed at each side of the aircraft with both fake missile and functional rotary 'gunner' The rotors are motorized by two M motors. A cluth is installed on each of them for security. the motorization activate two fake jet engines, one on each side of the aircraft. Final note: I am quiet happy with this one. With is aggressive look, it's features onboard it gives one overall good play time to my son. This is the more important, no? Speaking of this, ther is one more feature, last but not least even if it's not a real functionality. The experience with the 169 show me on major issue with technic helicopters. This issue TLG also had an experience with. It consist in the fact that when a child is playing with a copter and it's rotor in action, the movement the child gives to the flying aircraft affect the rotor with a lot of stress. Just imagine. Take your bike front wheel by the axle, one side in each hand. Ok? now ask a friend to make it rotate as quick he can and now, try to incline the rotating wheel from left to right. you see the problem. Her, with a copter it' exactly the same. This is the reason of the full articulated rotor. I'll show you in the video it's action but the fact to be freely articulated gives the opportunity to make 'fly' the copter and give strong variation of inclination without experiencing any kind of stress on the rotor's components. Steph.

ok for pictures in color. The deal was that they were shoot by night with awful colors so B&W seemed to be a good deal. i'll take good pictures ASAP.

Yeah! This is one cool news. You only have to keep your balance problem in mind while finishing it. Btw I notice you miss one propeller which represent quite a lot of weight. Good progress!

Off for today . Here are the progress for today. I replace the two fake engines fan as they produce one awful grinding noise. I stabilised the front back joystick command. I also realised a complete bank of testing between aw169 and ah77 and I come to conclusion that on some aspect this new design is better than previous one but ...aw169 is a pearle of stability. I identified 3 aspects to work on in the next days to take this copter at quality standards I required. Stay tuned...

have you evaluate of how many studs back wheels have to go? For 2 or 3 studs it could be ok for design, if it is more you'll need to make the rear way lighter. The heaviest parts are the panels. Maybe remove them one by one until the balance is done and redesign the tail with the authorized amount of left panels?

Thanks :) The reasons why I give up on the Chinook project are simples: When I build a model I need always to have a show of functionalities. The current one does something really special btw. On the Chinook, it become imperceptible what commands where doing on mains rotors. As the Chinook has a two stage mixing unit for commands, when you input a 2L movements in the first stage of mixing unit, it results a 1L movement at the output. and the same at the output of the second stage so you get 0.5L movement. if you add the backslash in parts, you virtually get nothing to see. At final count, you've built a Gaz factory that does...nothing. This goes against my own rules while building Moc. It always has 1. to be efficient. 2.be interesting and show something new. 3 always be a real play toy and nether a 'put on shelf' thing. None of those requirement where present, so I give up. Sure :) here is the list of functions already installed on the model: -motorized rotors by two M motors+ fake jet engine whit working fan -collective blade control -cyclic blade control -pitch control -chain gun orientation and tilting from the gunner seat (joystick) -laser and night vision pod orientation (connected to the pitch of the chain gun) -operating suspension on main landing gear -tail wheel orientation -back aileron pitch controlled by a lever -opening doors on opposite sides for pilot and gunners (as in real life, it allows to get in/out the aircraft very quickly) What I am planning and ongoing things: -functional hellfire launcher -support for presentation (maintenance area with working stuffs -review each of previous function and trying to enhance each of them until the dateline... thanks all for kind comments :) take 05, still a teaser ;)

I am curious about the final use of these wormgear. Why not simple levers?

it really is (designed to fit my other model) True EB competition, true?

Hi guys, I got one sad news for you. I had to give up this project. After working hours on it, I just realized I would not be able to finish it in time. More, even after completing the whole rotor system, it doesn't work that well and I found there was no real interest in it. I am bored by this one. It finally will be , and continue to be, the impossible thing to build. I was in that state of mind, and it's a good news for you , when in thought I had these words ruling my mind: Take 04 In the 22th century, as winter has finally come and the world is living in a post apocalyptical period , bandits of all kind are ruling the world. It was the time to put some order in that world. It was build at hunter's image. It was quick, silent and frightening machine. As people pass time trying to save what it could be, this thing wasn't designed to save anything nor anyone. It's name is AH-77S and it is the white hunter teaser: Steph.