Milan

One side of the leaf spring is fixed, while the other side is mounted on a shackle. That way, the axle keeps still, while the spring can compress and "extend" when compressed.

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Always nice to see your MAN truck :)

Not yet. Choose a few pictures you like, and insert them in your initial post. Copy their links and paste the links directly in the post while editing it. Delete the picture you initial uploaded to EB. Mind the size of the images. Max allowed size is 1024x1024. Choose the option to have them near that size.

Yes. You need to upload pictures to a image hosting site (flickr, bricksafe...) and then link them here. (then delete the one you have uploaded now, since EB does not host pictures) More detailed instructions are on our rules and guidelines topic.

@Fosapifi put a few pictures in your post, so we can do some frontpaging.

I have hidden several non-topic posts. Let's use this topic for parts discussion.

Hi Aerolight, Thanks for showing us your model It indeed has the wow factor, and it seems like it is robust enough to make those beefy tires spin in place. Nice video, too. Now, let's address the issues: 1. It is always better to take some time and create an informative post, meaning text+images+video. Since this is Technic forum, users want to see mechanisms, solutions, ideas, and to have a way to understand your point of view through text. Video is fine, but for a massive model like this, pictures and text are really important. 2. Creating a new topic: Often, it is best to keep everything in one topic, especially if you only have a "teaser" topic with one post. Creating a new topic for each phase pushes other topics on the second page. 3. Please take care about the picture's size. Max allowed size on the forum is 1024. Yours are twice the size. Please edit the topic and resize them. Let's try to not talk like this. I am sure you can find a better way to suggest a member how to improve their posting.

Really smooth and clean. Not an easy task to do with mainly Technic parts. Frontpaged

You can use gears, chains, or as Jurss suggested, a long axle with two perpendicular gears at the end, to reduce friction as much as possible. Using just a chain wont give you much room to make a reduction system, so the rotors may end up rotating too fast. You can put a reduction system just before the helicopter's input, though.

They will rotate according to the gear combinations you use, and the type of motor you use. If you want slower rotation, you need to make combination of gears in a way that a smaller gear engages a larger wheel (for example an 8t gear engages a 24t gear, which gives you 3 times slower rotation, but also 3 times more power). If you want faster rotation, do the opposite. The gear combination you have now will probably rotate them too fast, since you are engaging bigger gears to smaller wheels. I would suggest to just try and attach the motor(s) you have now, and see how it works. Then we can adjust it until you are happy with it. Yes. And it will get worse when they are powered by a motor.

What's the actual question? Right now, you can improve it by bracing the gears from the other side, too, with another "wall", and let their axles have supports in the both walls. I would also build a wall/support block under the tail of the left helicopter, right under the gear, and all the way to the base plate. Otherwise, it may shake too much.

It's been completed Love the old classic Russian design, and the model captures that perfectly. Frontpaged!

Love the look of it, and all the functions. And the track equalizing system.

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Rules on the first page said we do not open new topics for models. This is the only Cada topic for now

Hi @Legorigs Nice to see you posting your awesome models here I have moved your topic to the Technic/Scale Modeling Forum. It would be great if you could post a few more pics of the Mack, and a more descriptive description, so we can frontpage it, and attract more attention.

Hello @legojoelego and welcome to EB. Please re-read the rules about the Ideas promotions, the ones you have agreed to upon registering. I have removed the link and hidden your other duplicated post.

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Hello and welcome to EB. A few notes: Try not to post your email address on a public forum. I have removed it. Use proper capitulation and punctuation. Have some patience. Efferman is working hard, and he provides his work for free.

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No problem, just make sure your post is about your model, not about Ideas.

Welcome to EB. Please read the rules about posting ideas projects.

This might fit better into the Generic Contest topic

I like to see it from time to time, yes But, regarding frontpaging, we need an eye catching model, so it can pop on the front page, and draw attention to our forum. This truck, as well as the previously frontpaged Technic Imperial Walker/Scout Trooper moc, make a great job doing that I am off topic with this post, so let's get back to the truck itself