1gor

1:20; real tractor commonly uses group 49 tires (2155mm overall diameter) 900/60r42. 42" rims have actual diameter 29+1070+29=1128mm. 29mm is flange height, wheel part that keep rubber on it. Im michelin agruculture manual there are listad all flange heights depending on rim type...shoetly if 2155mm tire is represented with 107mm LEGO version, than rim/wheel should be 56mm aproximatel. Hope this helps

well LEGO usually uses nuremberg toy fair for this purpose when we ordinary mortals want to know which sets will be summer sets...just one comment; in (excelent) Xerion review Jim mentioned something about CLAAS Lexion Harvester with smaller tires at the rear than on Xerion ones - perhaps there something on it. where is smoke there can be fire. I think original sentence is like that: And what to think of a potential new CLAAS Lexion Combine Harvester with new smaller versions of the CLAAS tires in the rear.

I'll be happy with any model that uses 81,6 x 36 R Tractor tire to fit wheel racing small (smaller version to fit Xerion tire wich is not released yet, but I hope It will be relesed in year 2017)

or it could be based on 42035 mining truck tires

exactly, looks like tipical "Circulus in demonstrando". Anyway until we do not see images of sets we have to wait...

Idea for cab and front axle. Remember that u4023 and u5023 have different axle like 8110 set, and u216-u530 have like this one. My chassis is partly finished so I can take picture of it and post in this topic... enyoj ...but for some reason my android smartphone?! ignores image..hm?!!!???

I like wheel/tire combo from Arocs becsuse it is realistic, but using 32004a or 32004b wheel I managed to make portal axle with reduction using 8z and 16z gears. resulting steared, driven and suspended axle with 18 studs width and Unimog (at least u216 to u530 that I saw) had bigger wheels than ordinary truck like Actros or Daf xf... I assume that U4023 and 5023 also use even bigger wheels. keep with good work and remember LEGO is like classic musik you can not do it with force, you have to concentrate and to have peace and relatively quiet working atmosphere. When I receive missing tires I'll post some of my solutions in your topic if you allow me

Yes indeed U4000 looks nice...but did you try to install front differential - you'll get same with if you put it in 5 x 7 frame...my version of U423 is on the way, just waiting for missing tires - 68.8 x 24 to fit portal axels (partially) inside wheel. Do you plan to make wnything more on Unimog itself?

Axion with smaller wheels at the front like 81.6 to make correct proportions to Xerion wheels simply wont work if you try to recreate front suspended axle. I'll try to make front axle in a few weeks with Xerion tires yust to demonstrate what I mean (tried to make for 94.8 tire in the past but all features of Axion axle can not be realised in such small space). Fendt Varo 1000 series - front independent suspension with Lego parts has 18 studs and Fend has maximal 2200mm front track so you have to calculate that model should be about 1:15 to round up; and real beast has 185cm front and 225cm rear tires. Most realistic is medium size CLAAS Arion with 4 cylinder engine, Xerion tires at rear and new 81,6 with tractor tread and read wheel racing small at the front. Sorry fellow eurobrickers for complicated post but I only wanted to argument why some models are not likely to be made...

...or CLAAS Axion 950 with wheel/tire combimation from Xerion at the front ( if LEGO solves steering problems similar like one on Unimog) and porsche rims in red with new 130 x 50 mm tires at the rear. Porsche wheels woulde perfect to be used inverted at rear so you can put wheels from motorized excavator as weights inside rear wheels...

...but Mog without Portal axle??

Exactly Paul, but real Porsche has 7 speed (If someone did not port this info yet) One question - any Idea what steering angle would It have when wheels are driven?

I hope so, but yesterday I realize that I had to redesign central part and put central differential in in and whole linkage for steering something like on Barman's Xerion steering interpretation. Only difference is that I use 94.8 X 44 tires (the one from crawler), so chassis should be as narrow as possible I know that, but this image was just meant to help other builders if they want to do something like that. It is not finished version, so I'll make a gallery (not on Eurobricks) and link them here. thank you four your good intension's and info

this is my idea of how axels should be made (if images are not lost on the way...)

Yeah, space is also bothering me, specially if I want to motorize some functions like on Unimog, you'll see when I upload the pictures. I have Idea for steering similar to LEGO Xerion, but need to find time 4 LEGO

I believe that hood is very stable, but it is not smooth like on original one...I hope that I can find time to take pictures of my axles within chassis and post them - maybe my solution could help someone who reads this tread - of course with your permission

It is very nice, but I see that hood is causing you a bit of trouble like on my model...OK I need to make proper steering with 3 modes..., but live axles and 6 cylinder engine are done (together with main chassis part). Just one question - did you made suspended axles?

Hi Everyone, few days ago tires arrived. First impression - they are very very heavy and tread pattern does not look like one on real tractor and LEGO Xerion, but like tire for equipment like sprayer (not self propelled one but like this one http://www.getfarming.com.au/cdt/uploads/1/features/1200710311912.jpg), so there is no use for me. Another problem is that wheel does not fit nicely enough inside the tire sou I had to "play" with sandpaper in order to fit in this wheel (a pair of them per tire) http://alpha.bricklink.com/pages/clone/catalogitem.page?P=88517&idColor=85#T=C&C=85 I can take pictures and show you what disappointment from my point of view it is. Now I can only hope that LEGO makes 135mm tire that has fully compatible pattern tread with Xerion tire. I know that you expected this post earlier and aI can only thank you for patience.

Exactly, to use scale based on tires is the only sense IMHO. Another problem is that LEGO tires are very very wide compared to real ones...but that's the way that LEGO choose and we have to respect it and deal with it...

I will. that is no problem. In about 8 weeks time they'll be ready and another week for shipment...Just a slight difference - beacause I need them for rear wheel - mine will be used on double motorcycle wheels (this one) http://alpha.bricklink.com/pages/clone/catalogitem.page?P=88517&idColor=85#T=C&C=85

Did anyone noticed that steering mode selection lever is more pulled out when 4 wheel steering and crab steering are selected than when only front wheel steering is selected? (or I'm I to late)

my 2 are about 60 eur + delivery... If I want to realize project that is in my current plans, I have no choice. I doubt that LEGO will make 135 mm tires with pattern like one on Xerion 5000 VC. and to "stretch" Power puller tire on this overall diameter will result in very narrow tire for sprayer or something like that...From my point of view optimal solution for Power puller tire you can see on my folder under this link http://www.brickshelf.com/cgi-bin/gallery.cgi?f=535390 my 2 are about 60 eur + delivery... If I want to realize project that is in my current plans, I have no choice. I doubt that LEGO will make 135 mm tires with pattern like one on Xerion 5000 VC. and to "stretch" Power puller tire on this overall diameter will result in very narrow tire for sprayer or something like that...From my point of view optimal solution for Power puller tire you can see on my folder under this link http://www.brickshel...ry.cgi?f=535390 (interesting how maxthon browser wirks to mixed things up so I've quoted my self...If I could ask Jim to delete my previous port - thank you)

No problem about my name. And auto-correct can work like Indian translator... I've contacted Herr Kunz about tires, and wee'll see what I can do. Perfect will be that LEGO makes this one in red http://alpha.bricklink.com/pages/clone/catalogitem.page?P=88517&idColor=85#T=C&C=85 so I can use a pair of them per wheel...

Hi first of all thank you for info. I'll see what kind of tread for tractors is "compatible" with new LEGO Xerion tire which is good for front. On second page, second row could be promising. http://home.arcor.de/hobbybedarfkunz/Preisliste2013_Seite%202.pdf so I have to contact moder tire manufacturer to see what can be done. Just hope that Tires are not to heavy, but I'll see what can be done... btw I don't think that I'm John. Perhaps as a John doe my life would be better, who knows... thanks

it seems like you have various positive and negative experience with 3rd party tires fitting wheel racing 62 x 46 (the one on your Xerion). did you find tire that fits the same wheel or 56 X 34 that is 135mm x 50mm and that tread is as close as possible to new 107 x 44 from LEGO. because I plan new tractor project from autumn when LEGO Xerion 5000 will be available thanks to everyone who can help me