Ivan_M

I realized I can implement variable geometry paralelogram very easily, it was only a matter of replacing 9L liftarm with pneumatic cylinder, here is video showing it in movement. It is very helpful because I can tilt it to help arms to fold. The weight of the arms puts a lot of stress to the hinge and folding wasn't smooth at all. I'm overally happy with the back and I will probably leave it as it is. Maybe a dual cylinder for tilting would be nicer, but i have only 5 of them and as you can see, all are already used.

Thank you, the tubing is not a problem, there is only one 90° bend, there is no tubing on 2nd section of arm. The rear will be strenghten more, I just have to add tank to figure how much space and where I have. Thank you, the play in axles is terrible The axles are strong in forward-backward direction and can hold a lot of weight, but they are weak in left-right direction. Driving straight is fine, but turning puts a lot of stress to them and they end in "A" shape. It is only lego, after all. You have to decide - high narrow axle like mine which is more for display or your solution (which I like, don't get me wrong) that is more playable... Thank you!

I have a big update. I have been working on chasis and arms. I have addes L motor for drive, fake 4L engine and two L motors for steering. I have used the outer gear on small turntable at each axle to perform steering, but it proved to be too space demanding on place where I need the chasis to be narrow. So in the end I went wth 13L rack. The L motor drives worm gear -> 8t pinion and 12t bewel that moves the rack. Both axles uses the same setup. Gearing from drive motor is 8t pinion to 24t central differential and to each axle diff. The last motor I have added is M motor that runs pneumatic pump. I realized then that I'm running into some space isssues and there is no way to add motorized pneumatic valves. I may also sacrifice motorized PF switch for rear steering motor. I have micromotor that would fit, but I don't want to add such rare part because I intend to make instructions. The last thing I have been working on are arms. Obviously the first arm was totally useless as it was waaaay too thick. I realized the arms cannot exceed 3 studs when folded. That means the folding section must fold inside the first section. The initial design was 8 studs wide at the hinge, so I had to redesign it completely, making slight compromises to structural strength but I'm very satisfied with the result. Now the problem - the chasis as now can drive and steer but the axles are not very stable in parallel direction to each other. It means they make A shape after few turns due to small turntable tolerance. I guess this doesn't have solution, so the model will not be very playable, but the extreme ground clearance is one of the most importat feature the model has so I will keep it this way. WIP Arms by Ivan Moc, on Flickr WIP Chasis by Ivan Moc, on Flickr WIP Chasis by Ivan Moc, on Flickr WIP Underside by Ivan Moc, on Flickr WIP Chasis by Ivan Moc, on Flickr

Oh I didn't realize that it hit the ground, it is fine then

It is nice but I was expecting better steering radius, I think the back of the car might move more.

Porsche rims are only in black, other colors are from bootleg companies from China.

Yes you are right, 2017 will indeed look empty on Technicopedia, I wouldn't even consider bucket as new, becuase only the mounting points are different, string is also worthless If you go all way back to 2007 you can find very interesting parts each year: 2007 - PF 2008 - large LA, differential 2009 - many panels, 5x7 and 5x11 frames 2010 - small rack and some minor parts, ok this year was weak 2011 - mLA, portal hubs, unimog tires 2012 - servo, L motor, helicopter blade 2013 - new wheel hubs 2014 - volvo bucket, 49,5mm tires, dog bone 2015 - pneumatics V2, new drive ring 2016 - claas tires, porsche tires 2017 - worm gear, connector and string I don't think there will be PF V2 in ~5 years. I actually think that lego prefers IR because of its poor performance outdoors. Several people from lego mentioned in interviews how customes are pain in the *** regarding support. Imagine kids taking RC models outside only to loose parts, damage elctronics or gears from dirt etc.

Charges from ~1970 uses wheels 215/65/R15 so if he uses wheels 49,5mm the scale is ~13,3:1 and wheelbase 29 studs - so the proportions to length are correct, maybe hood is too high I didn't measure. What you suggest would meand totally different scale. I think it looks good.

Funny is that this one: pops in my mind when Mack is mentioned.. Like JimDude said - all long nose trucks seems same to me

The models of trucks with 49,5mm wheels can range from mid-scale to bigger scale quite well. It depends how many studs you put between the wheels. The overal shape works fine with 7-11 studs between pivot points of axles (13-15 studs cabin width) and I think the Mack will be 15 studs wide. I agree that it will be quite big but not monstrous like Arocs.

First of all, nice work Dylan and thank you very much for BI. I was bored a little so I have made digital file from the photo sequence, original stud.io file is here: https://drive.google.com/file/d/0B_52o8Yjx1kuUDFoVktGelE1cEk/view?usp=sharing LDR file here: https://drive.google.com/file/d/0B_52o8Yjx1kubkNYejVLS0hwTDg/view?usp=sharing Please note that it is without flex axles and pneumatic tubing as that is beyond my skill. The angle of some parts is also different as it is almost impossible to recreate it without physical model when there are usually 2 or 3 pivot points. My main purpose for doing it was to create parts list to check if I miss something before starting the build. It would be cool to see it on Rebrickable, but that is not my job.. corvette Z06 by Ivan Moc, on Flickr here is link to my custom parts list on rebrickable showing all parts except for flex axles and tubing: https://rebrickable.com/users/Ivan_M/lists/16358/

I wonder how many bricklink orders they had to make I wouldn't mind picking few yellow curved panels, maybe nobody will notice once it is crowded

You can export io file into mpd and then create pov file in LDView with custom setting, it has nothing to do with povray, it is just stud.io setting. You can export to pov file directly from stud.io and edit parameters in povray. Regarding the buggy, remings me 8226 Mud masher: https://brickset.com/sets/8226-1/Mud-Masher my last set before dark age, VERY playable

I have of course seen you thread Mine suspension was quite similar, worm gear can slide over axle so I started there but I wasn't able to stay within 2 studs width and that is deal braker for me. Anyway, I have first design of arm: WIP Arm by Ivan Moc, on Flickr I made it too long just to test the design. It is 120 studs long, so it would mean total width ~33m and such arms are always with more than 1 hinge. The flex is very low, far end is only ~2-3 studs lower. The final arm will be 90 studs long on each side, representing the smaller arms that are ~24m wide.

Thank you! I wouldn't say that suspension is the only missing thing, I also miss variable track width and ground clearance. I already spent more than enough time developing these without aceptable sucess so I will pass them I'm always amazed how suspension works on real sprayers, incredible machines..

Yes they will come as single tire on back of the truck, there are many creations where such setup is and I think it looks fine. We might as well see more narrow version for front, similar to 43,2mm tires, that would be awesome. 2017 was very scarce in terms of new molds compared to 2016 so I think they should throw some new nice parts.

6L with current mold is too long even for larger scale like Arocs, if the Mack is based on 49,5mm wheels then 4l is really maximum I can imagine. However this might be opportunity to introduce new mold for smaller engine - single piece with 3 pistons in row to make V6 or L6 engines, each piston 1 stud in diameter.

I would say RRP will be much lower compared to Arocs - no PF, no pneumatics, smaller scale. Arocs retailed for 199€, I expect Mack to sit at 130-140€ RRP. But that is just my 2c. Edit: so functions speaking - full manual but overally same - crane, outridges, steering, 4l engine

Yes I will use 8x8 tile in white or 8x8 dish, whatever will come cheaper

There seems to be a lot of crop sprayers lately so here is my WIP. It will be generic sprayer based on multiple sprayes I like, I take this pictures as reference: The features i would like to implement are: -Drive by one L motor - 3 modes of steering with two L motors. Motor for rear axle will switch direction with PF switch operated by M motor - Cabin on lead screw that can go up and down, operated by M motor - Pneumatic compressor with L motor - Pneumatic paralelogram - Pmeumatic folding of 2 section arm The scale is set by motorcycle wheels from BMW, approx 1:16 I love the rised wheels so I started with axles. To keep them as narrow as possible I decided to base them on worm gear so I can get each axle as high as necessary. Each axle is mounted to small turntable at top. I was surprised how stable the axles are. Since the pictures are not very good here is digital render how it works: WIP 4 by Ivan Moc, on Flickr And preliminary chasis with four of them: WIP 2 by Ivan Moc, on Flickr See the high ground clearance: WIP 1 by Ivan Moc, on Flickr Please note that the wheelbase is not final - it should be longer by 3 studs The last feature I have is cabin that can go up and down on lead screw: WIP 3 by Ivan Moc, on Flickr

The engines are too close to fuselage which is too bulky for wings. I mean it is nice but I would try to build it with accordance to some blueprint. Go for short version of most popular jet liners like Airbus 318, I'm sure you will find plenty of material

New released buildable SW figures are again source of some nice parts: 75530 Chewbacca features few dark brown pieces as well as reddish brown 32291 75526 Elite TIE Fighter features all new part plate 2x4 with pin hole underneath: And finally 75529 Elite praetorian guard comes with 2 pieces of red #3 connector

Nice find! It looks like TLG is slowly completing liftarms in red, first dog bone and now T beam, the only missing part is 2L liftarm with axle hole and large frames. I also wonder if we will see thin 5l liftarm with axle ends in any other color than LBG and black..

You can also use red 16z free spinning gears and driving ring without the white connector to get through turntable.

It depends on how many functions you would like to control with one motor and on space available. Base with tracks is usually too small to fit motor, battery box and gearing. If you put BB on superstructure you will limit rotation movement due to cable. And if you want to power linear accurators with the motor you will have to pass axles through turntable anyway. The other reason BB and motor(s) are placed into superstructure is weight balance, BB serves as counterweight balancing superstructure and limitng stress on turntable.