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  1. Hi, I present my newest creation – off-road truck KrAZ 255 version 2.0. This is successor of my first public MOC – KrAZ 255 to which free instruction are available here. The goal in version 2.0 was to improve basically every aspect of predecessor and to pay respect to this awesome off-road truck. And as usual, most of the features are based on truck Tayga 6455B available in game Snowrunner. This truck is also the next part of my Snowrunner series started with Chevrolet CK1500. On the video below you can check what details and functions I was able to put into this MOC and how KrAZ 255 v2.0 deals with off-road terrain and against obstacles. Extensive list of features, details and interesting facts about this creation you can find below the video. Enjoy! Instructions: LINK General details: scale: 1:23 dimensions LxWxH: 42,5x13x16,5cm weight: 1525g Features: 1. RC front axle steering (C+ L motor) positive caster (click) Ackermann geometry almost perfect pivot point (click) PF servo friendly - 180 degrees of movement for steering input 2. RC 6x6 drive (2 x C+ L motor) independent drive input for each front wheel (click) (for this idea I would like to thank @Fluwoeb and this topic, this is because of you! ) rear wheels driven by two independent inputs (one for 2 left wheels and one for 2 right wheels) (click) front wheels driven by one differential and rear wheels driven by second differential (click) both differentials coupled together to harness power of two C+ L motors both differentials coupled with lock mechanisms (click), controlled separately and manually from the cabin (click) and equipped with visual color indicator of diff lock on/off status located behind the cabin (click) power train equipped with new big CV joints - cardans and old CV joints limited in drive of the front axle and completely removed from drive of rear axles 3. RC winch with place to lock the hook (C+ L motor) 4. RC front and rear lights (Lego LEDs) 5. suspension for all 6 wheels (click) front wheels on live axle suspension with shock absorbers (click) and a big range of movement (click) rear wheels located on independently oscillating arms with rubber suppressors controlling the movement (click) rear suspension without shock absorbers - no side leaning and no bending under the load (click) 6. three studs ground clearance (click) 7. bottom of the truck armored with panels to secure crucial mechanisms and improve dealing with obstacles (click, click) 8. two hooks for connecting trailers, front and rear one, both equipped with lock/unlock mechanisms 9. openable doors, hood, tool box, first aid kit, sideboard bed with separately openable sides, each one with two locks 10. working V8 engine with fan which can be easily removed “for maintenance, repairment or for swap” located in detailed engine bay with a grill via which working engine can be watched (click) 11. detailed two seats cabin with openable and usable glove box (click) 12. working steering wheel 13. modular construction (axles, cabin, additions can be easily disconnected) 14. powered by Buwizz 3.0 but also prepared to be powered by standard C+ Hub (click) 15. prepared to be built also with PF motors and PF servo without significant changes and to be powered by Buwizz 2.0 (click) or even standard PF Battery box with IR receivers (click) 16. "disk brakes" in front (click) and rear wheels and many others small details (click, click, click) 17. equipped with many additions from the game Snowrunner, like bull guard, exterior roll cage, roof rack with fuel canisters and spare tire, double snorkel, sun protector (click) Interesting facts, designing decisions and details: driveshafts for front axle are connected in a way that the longer, more “smooth” CV joint part are connected closer to front axle, so lower to the ground, which corresponds with the idea to prepare bottom of the frame smooth and resistance to sticking out objects which can immobilize the truck (click) most of the motors are placed symmetrically at the center of the truck, which is good for weight distribution, but Buwizz unit is localized off centered, closer to the left side of vehicle. To balance that, motor from winch is placed also off centered, but closer to the right side of truck (click) all wheels can harness power from both C+ L motors, as they are coupled, but rear axles, which in general generate more load for motor, are connected closer to the right motor, that is why V8 engine is connected closer to the left motor, which is connected closer to front axle, as the front axle generates less load than rear ones (click) additionally output for V8 engine has the same speed as motor output - which is higher than rest of the drivetrain - for better visual and sound effect (click) there is a „biscuit connector” placed in rear wall of the cabin to increase ways of location and connection and types of power source which can be used to power up the truck (click) to avoid widening the whole truck, only hinges for sides of sideboard bed are located outside of the sideboard bed to allow opening sides to vertical position, which makes loading the cargo easier (click) positive caster present in front axle has (apart from being next feature adapted from real cars, apart from dealing with not very high tolerance of Lego parts, which causes negative caster and apart from being the force which steers front wheels strait when driving forward) a function of forcing front wheels to stay on axles when driving forward (I think this is the answer you were looking for @AutoBacon in this post ) and many more details you will discover, if you decide to build my truck I would also like to thank @nico71 for his great video series related to Western Star 6900 Twinsteer. It helped me to prepare more realistic grill, hood, roof elements and I believe overall better body of the KrAZ than in my first version of this truck. Thank you! Attention! Two C+ L motors with decreased speed 3 times, so with torque increased 3 times, generate a lot of force which needs to be handled by rather advanced drivetrain. That is why there is a risk for 12T gears to skip or even be destroyed if wheels come across too much resistance due to very rough terrain. Please keep this in mind and happy off-roading! Photos: (click) Here you can see the original KrAZ-255 (1211 parts, 991 grams), the new KrAZ-255 v2.0 in standard configuration (1632 parts, 1220 grams) and the fully equipped and ready for everything version of KrAZ-255 v2.0 (2091 parts, 1525 grams): Internals of the MOC, so drivetrain with differentials and diff locks connected with V8 engine, steering with working steering wheel and the winch I hope you like it, if you have some comments or question, please ask. I will happy to answer.
  2. Hey y'all, First time I'm gonna try to do a WIP page... Been fiddling around with this Kraz 255b MOC by the one and only Ingmar Spijkhoven and figured out what attachment I'll build finally. In short, it's a mini portable bridge (called a TMM-3 or a scissor bridge). Functions of this add on attachment consist of- Actuator for raising and lowering the bridge Winch for deploying and retracting the bridge 2 stabilizers at the end of the truck to... stabilize the truck Propulsion has been swapped from 2 L motors on the sides to 1 one buggy motor under the hood. Now the replica engine can be put on display. The gearbox I really wanted to try part 35188 to make all the functions AND propulsion run on the one motor. Where I guess we can call the "transfer case" is at is right behind the cab, so here's what the result is for now. It was tricky since the tandem axle left no room for fit it in between the chassis rails. The rear shaft will actually hit the bottom of this when compressed all the way. It's as compact as could get it with Studio (kinda a LDD fan). It'll probably need to be reinforced even more, but wanna see how it mates with the buggy motor first. Never built a gearbox before and destroyed many other MOC's with gearboxes so don't have high hopes. Note- all of the motorized attachments will be ran with worm gears, so not to concerned with the gear ratios... buggy motor just gonna make everything super fast anyways with a Buwizz. Where buggy motor is planning to be in the future a bit more securely. Just seeing how a gearbox could be placed and how high it'll be. Part 87408 is now mounted securely below the motor with two 24t gears feeding it above (will get a shot of it soon). Getting the motor to fit underneath the hood was very miserable. Couldn't use a servo anymore since the buggy motor is so low it'll interrupt the travel of the front axle. (yes the fenders are mounted backwards when rebuilt...) Ordered the parts for the gearbox and will update once they come in. Planned order of the build- Gearbox Wheels Test drive Stabilizers Building the frame/chassis of the TMM winch Scissor bridge Survive the misery