ukbajadave

It reminds me of the fuel truck from The Grand Tours "Sand Job" in a good way How playable is it, can you push it around without the tyres peeling off?

How about a pneumatic octopus fairground ride? https://en.m.wikipedia.org/wiki/Octopus_(ride) Bonus point if it folds up onto a truck.

@msk6003 That looks really interesting. Do you think it would work if the towballs are opposite each other rather than in the same plane? Do you think it would be possible to put the wormgear inside a box section inside another box section to make an extending boom?

Is it 18654 technic 1l beam? https://www.bricklink.com/v2/catalog/catalogitem.page?P=18654#T=P

Welcome to Eurobricks If your aim is to sort the unsorted then try Bricklink or Brickset where you can search for sets and see which pieces they contain or search for pieces and see which sets they were in. If you have unusual or printed pieces post them in This thread and people will know what they are. Youll need to use an image host for pictures. I use Rebrickable to catalogue my sets as I don't have a lot of loose bricks. Depending on what you have this might be all the database you need.

I like music when I'm doing anything! Not far off me. Also Detroit Escalator Company and Global Communication. Nothing too heavy, I save the Iron Maiden for driving.

Agreed. More Brass and clockwork please

Most pleasing to watch in action I particularly enjoyed the chain driving the worm gears for raising and lowering. Is there a stepper in the gearbox?

Inspired by this thread I eagerly typed my birthday into Google with the word "Lego" to see if I was a part or a set. Sadly I only seem to be a spare part for a Toyota Aygo

After reading all of the above I'm still no wiser as to how the crab steering functions I guess my only choice is to build it!

Do we think a battery box and small motorised air pump might fit in the mobile power box?

The only car which was allowed to adorn my teenage bedroom wall! I already have one of these in my display cabinet though.

Are there any parts of the dragon that might be hard to bricklink?

Your build will be a very impressive model when it's finished! Starting with 62.4x20.5 tyres gives a scale of about 1:15 so a Mercedes Tourismo M/3 would be about 21x30x107 studs. I mocked up a dimension box next to 42128. If you are using larger tyres and a bigger scale your build will be a beast! I think I'll leave mine on the future plans list as I'd be bricklinking an awful lot of panels

Thanks for posting what you have achieved so far, a bus has been on my build list for ever as I've worked with them for 30 years. Firstly I'm intrigued as to why you chose the Jumbocruiser? I am more interested in the functions of a model so would probably choose something like a Mercedes Tourismo where I could still include features like air doors, powered locker doors, kneeling suspension and ferry lift, tag axle lift etc. At what scale are you building? 25 studs wide suggests a nice easy 10 studs/metre (about 1/12th scale?) so the build should be 180 studs (1.4m) long. 22.5 tyres are roughly 1m diameter so 10 studs. Once you have larger tyres you may be able to get more room between the chassis bottom and the interior floor. This would help get the seats below the window line. I see you are using Power Functions motors. Would there be any advantage to switching to Powered Up? I wonder if it is possible to have the steering axles driven by 2 motors at different ratios from a single input using software. I suppose achieving the same result with PF would be in using different gear ratios. I wouldn't worry about having suspension in a model like this, it's not a 4X4. Not knowing enough about the prototype I suspect a kneeling step or tag axle lift wouldn't be fitted either so that makes things simpler. I think the engine is fantastic, there are some great details with the belts and pullies. In your original post you say it is from a previous MOC so I understand the reason for using it but as a bus nerd I would want to add the 2 extra cylinders of a Mercedes OM442. I will be following this WIP with interest to see how your build develops and you have inspired me to make a start on my own (possibly a slightly smaller one!)

When I read this I thought it was surely some mistake in translation. After all nobody would make an actual variable exhaust nozzle right? Then I watched the video! Congratulations on the absolutely amazing number of features you modelled. All topped off by looking better than an official model. Well done

@howitzer That's exactly the video I was thinking of! Whilst searching for it I found This 2015 Eurobricks thread where people are discussing whether or not Lego CV joints are actually constant velocity so it seems we are not the first

I vaguely remember a youtube video where someone had lots of universal joints out of alignment to demonstrate the cumulative effect. I only have 4 of the new bigger "CV" so probably too few to be noticeable, but if someone else has lots how about an experiment?

@Stereo That seems logical so I'll do that, cheers Interesting point, is part 52731 Large CV Joint actually a constant velocity joint or instead a larger universal joint? I mean sure, Lego calls it a CV but on actual cars they are a little more complex and full of ball bearings and stuff.

Is there a trick to aligning big CV joints like universal joints? My specific example is this new CV to UJ

2x XL motors side by side replacing the outer chassis rails. Gearing is a problem with an odd spacing and the need to couple the outputs. According to rebrickable I have 30,000 parts but not a single 28T gear... My Jeep driver is going to have a frankly massive coolbox

Perhaps OP is planning something like this?

Here's where I'm at so far. Orange pieces are placeholders for unowned parts and scaffolding. The chassis is very much following the instructions from rebrickable with the following changes: PF servo replaced with PU L motor. 2x PF L motors replaced by 1x PU XL motor. Some pin swaps due to motor pin hole differences. 1:1 Gearing due to meshing constraints. Now I have a feel for how the chassis goes (11 wide) I'm considering trying to squeeze in 2x XL motors. This may change the distance between motor and drive axles and allow me to select a lower gear ratio. Once the body is built I can only imagine the hub sitting where the rear seats would be.

It's interesting to see how the three chassis have developed as features have been added. I think I'll build as per your original instructions and then look at how to fit C+

Thanks for making instructions for this cute little model. I've downloaded them and I'm going to see if I can use Control+ as I don't have a Buwizz. Is the new chassis change just colours? I'm going to have to make some substitutions anyway.