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About steph77

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  1. Hi, As there is a copter MOC on the forum i must be there :) May i suggest to you to get out with the idea of a C model? It would give you so much more liberty to design the model? About the MOC now, i particulary love the scale of it and it's global proportion. From my experience, there are some attention point you have to fix quickly: 1 - Design of the blades : their wheight will have a considerable impact on the rotor's design and on the final look of it. You can work temporary with similated wheights on the extremities of the rotorhead. This is also helpfull to check the command's efficiency. 2 - Will it be motorize or not (personnaly i would prefer not)? This is important because of displacement of the gravity center of the MOC due to the BB. One of the main issue in helicopter MOC is the fact of to much weight on the rear of the MOC. 3 -Functionalities of the rotor head and linkage to the cockpit that must be integrated from the very begining of the design. Maybe you could be interresed by this design : I will follow your work very closely. This is actually one excellent start point Enjoy your build!
  2. 42078 - Mack Anthem

    Looking at the crane assembly i am surprised by the use of CV joints in the longitudinal transmission . ...they do not seems to be used in the B model. Anyone has an idea? On the right side of the B model i ask myself the function of the 20T gear. The lower one of the 2 presents on this side...
  3. Trucks at this scale definitely looks awesome and makes 'arocs like' trucks looks a little odd'. I dont see correctly what could be the brickbuild engine. About me, one standard engine or technic mini engine fits perfectly with the scale. Does anyone have a visual for my comprehension? Thanks
  4. I told you it was 49.5/20 tires for the MAC :) Completely in love with the concept of full manual set. and particulary with the two B models of the MAC and Rally car. I have a feeling coming back in th 90' don't you?
  5. ...and this is a real Good thing 😊 what i meant was that your model is another proof that this is a real good scale to build trucks. Again :great job ☺
  6. Cool model. Remind me some of my builds in a same community of scale. Good job on it. Just one little reserve on outriggers bending too much for me....
  7. 20: 10 1: 6 10: 4 22: 3 18: 2 9: 1
  8. Farming tractor

    Thanks all! I do have tried the Claas tires but i needed to take the mudgards by two studs higher than actualy and it give him some disproportionnated look. I'll try to post a picture in this configuration...
  9. Hello, I present here a small agricultural tractor. The origin of this model is simple. It has an educational value. I used the subject to begin explaining to my son the basic principles to achieve his own models. The purpose was therefore to explain to him the following principles: - Steering rack, steering wheel. - How does a pendular axle work? - The U-joint how does it work? - Differential utility, - Realization of a simple transmission, - How to properly cross a transmission axle and a steering shaft, - What is a gearbox? ; simplified application in on / off mode for a function. There were finaly lots off things to explain. And the result is a nice tractor, playable simple to build. Here it is : About the design, we are on a MF235 base or something like that, (it's not really important;) Some other views: The rear linkage is three-point type, the PTO is in the central position, offset from the wheel axle for realizing a transmission axle with the gearbox wich is located under the steering wheel and allows to put the PTO on/off. Closer: The lifting is carried out by means of a simple mini-cylinder controlled by a crank located on the left side of the tractor: The hood is openable, of course, and we have a small engine L3 in direct drive on the differential of the rear wheels: We added some details, such as a pseudo oil gauge: Small zoom on the PTO control, under the steering wheel: The front axle is pendular (thank you to the neighbor who showed it in real life to my son), a view of the driving position, with the high exhaust pipe , in order to not 'Gaz' the farmer :) And finally the traditional view from below or we somewhat sacrificed the possibilities of crossing by installing the mini-actuator, but ...Who cares? In the end this Moc comes back to me rather well, it fulfilled its first role;) What else? Steph.
  10. . Anyway it'a good choice! Just be carefull. This piece is quiet fragile at the articulation point
  11. Thanks! Could be hard to find and be very expensive. I just had mine from the dark age. Personnaly i would preffer @efferman custom part....
  12. Here is a video of the model in action: Enjoy!
  13. The upper part rotation is achieved by one medium motor. Here is the kinematic sequence: M motor/worm gear / clutch / 12T / turntable. Although I have 3 wires passing through the turntable I didn't install specific rotation limiter, but I had better to do so. I'll try to see how I could realize this limitation. Thanks for comments!
  14. It is RC, three IR controller. The IR receptor are installed at the back of the body, one in the left side and two in the right side. The receptor are integrated by the use of the black color for the back part of the structure. The cells are oriented to the top for a maximum quality of reception. Look closely at the first image of the post and search the new curved black panels 3/5 at the back and search inside the curved side on the top, you'll find them ;)
  15. Thanks! I do not based it from a real model. I just make use of my Volvo labeled parts to give an identity to the model :) Honestly I tried to do it. But I failed. My reasoning on this point is the next one: As my treads are only 20 cm long (total length, only 21t between axes) I do not have that much place to insert the drivetrain. Making use of the treat sprockets involve that I had to report to the center on the tracks the point where I could connect the motors. This meant a 5 to 6 T longer tracks witch doesn't match my goal. On the other hand it was possible to pass the drive train directly laterally. It also failed due to much to wide design. So, even if the design impact is real, I decide to use 40T gear and old style treads. This was the best compromise as I immediately obtain a great reduction (40T/12T) and get a good power and couple in the tracks. As the duet 40T/12t is realized with one T of vertical offset, it also fit perfectly with the L motors points of connections Last but not least, the rotation on flat surfaces is much smoother with those 40T gears :) It is one of the few point on witch I made different choice than what is usually the use. Thanks for comments