MaxSupercars

Hi guys, thank you for comments. I answer them later... :) Here are some climbing tests of my Tatra 8x8. I didn't include it in original video because of poor quality and mess in background. That was my test area. Tatra must complete this task otherwise would not see the real sunlight and would not deserve to look outside... I wanted to post you this video from developing phase to have a look at it's abilities. As you can see it is really strong. I make later better video as soon I find enought time to make it on higher quality level. Max

I really don't believe that TLG canceled the 42051. We'll wait till March and we'll see. I like it quite much... Max

I like the shapes of first one. More attractive... :) Max

Thanx, yes the final gearing is 1:3. I add it to description. :) I add more images later. In video can the underpart be seen. :) Max

I’d like to present you my version of Tatra 8x8. About 3 months ago I decided to create a crawler but I didn’t want to make simple common 4x4 crawler. I like Tatras so I decided to build my version of Tatra because of superior independent suspension, very good climbing performance of 8x8 in rough terrain. I didn’t want to make very big model like Madoca1970’s great Tatra so I have decided to use the medium sized 81,6 balloon tires. The main purpose was to make strong 8x8 Tatra that can climb on obstacles or do easier wall tests. Main characteristics - 8x8 Drivetrain with final 1:3 gear reduction - 4x PF XL-Motors for drive - 2x L-Motors for steering - 2x Li-Po Rechargeable batteries Dimensions (LxWxH): 51x19x21cm (64x24x26 studs) Weight: 2,2 kg Design details: - fake custom V12 engine - openable doors - adjustable seats - first aid kit, fire extinguisher, spare wheel, side details, exhausts Video Driveline The main objective was to make powerful drivetrain. I begun with 2 XL Motors but as the weight of the model rised I had to add second pair of XL Motors. The problem in this case was to transfer huge power and torque into drivetrain. The advantage of Tatra drivetrain is that there is one central drive shaft without any universal or cv- joints which could be the weak point. That’s the advantage in comparison with live axles or other suspension or driveline types. Because hard coupling of 4 XL Motor cause the gear skidding I decided to transfer power on 2 places of driveline – before and after 3rd axle. This solution makes the 3rd axle very strong what is very usable by climbing on obstacle when only central 2nd and 3rd axles got contact with the ground. I didn’t want to split the driveline to the front and back, because so I can use the power of driveline also when any of axle is in the air and the load will be redirected to axles with the grip. Steering I wanted to have fast steering and big steering angle 45°! So I used 2 PF L Motors and I didn’t gear it down much. Steering got quite much power. After many tests of different steering systems I decided to use the gear racks and linkages what gave me best results by bump steer. From the same reason I placed the linkages down also to minimize force to turn the portals hubs with pivot point more inside of model. When I placed steering down I had enough place at the top to place another parts of the model for ex. the steering L-Motors and the body remained despite of this very slim. Suspension Tatra suspension got a lot of advantages. As mentioned the driveline remain straight and can transfer a lot of torque and every wheel is suspended independently. As you can see in video the halfaxles are shifted by offset like in real Tatra. Connection of halfaxles with central driveline via Linear Actuator holders makes very rigid connection and there NEVER appear the skidding between 12 tooth bevel gears what is huge advantage. At the end of halfaxles and at the end of driveline are portal hubs with 1:3 reduction. This increases end torque and adds extra ground clearance for Tatra. For ex. the real Tatra 810 uses the portal hubs. Other Tatras use mainly wheel reductions. Electrics Each of XL Motors is being fed by separate PF IR Receiver, pair of receivers are fed by separate Li-Po rechargeable battery. I used my own blinking electrics for blinking of upper orange warning lights what gives the model very attractive feature and makes fun by playing. Design details By building I started with chassis, suspension and steering. When I was finished and model got very good performance, at that point got model weight for about 1,6 kg. After adding all the details and eye catchers like cabin, body, fake motor, spare wheel, exhausts, first aid kit, fire extinguisher etc. added additional 0,5 kg what forced me to add additional XL Motors without reducing the Tatra speed and gearing it down. The final weight is about 2,2 kg and this fine details can be removed in case of Truck Trial to make the Tatra lighter and give better performance. The cabin is inspired by Tatra 813 cabin but is shifted more to the back to reduce the long nose and give better climbing performace. The working fake V12 motor is placed on right place at the nose between seats like in real Tatra 813 and is air cooled by a big fan. The front hood can be opened like in real Tatra. Steering wheel is working and connected to steering system. The doors are openable and the seats adjustable. In the cab are nice details like fire extinguisher and first aid kit. Behind the cab are located exhausts and big spare wheel with some other nice details at the side. On top of the cab are blinking orange lights and side mirrors. The rest of the body is very slim and creates nice line to the end with look on powerful XL Motors and Li-Po Batteries. Enjoy images and video and I'm open to answer your question when interested... Max

Really great work! I like it. Nice Lego replica. Max

Oh... you can detach the mover modul! Great idea! Like in real you can detach it in winter and you as snow plough... Max

Great! I like it very much because of it's efectiveness and speed. I would use the lighter LiPo accus to save 2x130=260g! Thanx for video... :) Max

Jurss, I like your garden tractor very much. I got the real same one in red. Because it is easy and quick build I'm thinking to build it. It's so cute... :) Max

Cute funny model. I like the chain in driveline, steering and suspended seat. Gear up the mower and use smaller blades... :) Max

Pavel if you have decided to go this way = to became a public person, you have to count with all the positives and negatives that come with it. You know that the best way is to create your own opinion and you should know which discussion got sense and which not... Max

I think it's good that TheItalianBrick posted the info. This helps me a lot because I have also seen guys selling this sets. Now I pay attention. Thanx... Max

I was curious why there is czech "OK" sign on the body. I though it is just pure accident. Now I know it is not. Thanx for info. :) Max

For 10 Euros very usefull parts. I like it as well as other 2016 sets. I like the gear retracting mechanism a lot. Very good set for good price. Thanx for good review. :) Max

Hmm very good Idea to change the color scheme and compare them. It looks good in both colors. Thanx for review and video... :) Max

Thanx for very good review. I like the set because of many usefull parts. 6 small white panels and lime rims... :) Max

Thanx Jim... :) Max

OK, at what time can we expect them? Dec 1st 0:00 CET ? :P Max

OMG it is huge! I thought it is smaller but by this comparison I wanted to see it real. Max

It looks great with stickers. Very good work! :) Max

Very nice model with nice proportions and shapes... :) Max

New parts and unboxing review of Lego 2016 sets ! So TLG come with new 5L and 7L yellow axles. Interesting that it uses them in combination with grey 5L/7L axles. Interesting new panels. Max

Hmm nice to see Efferman 2 :) Effe uses also Inventor. Nice parts... :) Max

I have posted this several times. Here small 3D printed Lego torsen diff. designed by Efferman with helical gears... Max

You can not compare it with Crowkillers Gallardo. This is higher level of design with outstanding proportions. I have already bought instructions. $10 is nothing... Max