1gor Posted March 2 Posted March 2 @falconluan when I solve cable redirecting and axle stiffness, I'll post it in my topic...it has 6 functions... Quote
Jundis Posted March 2 Posted March 2 @falconluan I think you are on the right track with the shaping of the hood. In an old interview of Markus Kossmann or Olav Kroigaard, they said it is more important to get the "feeling" of the lines than get every detail right. You did a great job of using the small panels on top. Have you tried to use the 90° angled connector in lime instead of normal connector just below/behind the headlights? Maybe it's the wrong angle, though... @1gor Looking forward for the update of yours! :-) Quote
1gor Posted March 2 Posted March 2 1 hour ago, Jundis said: @1gor Looking forward for the update of yours! :-) ...well it is powered by BuWizz motor...as I said when crucial construction updates will be done, I'll post it in my topic... Quote
falconluan Posted March 3 Author Posted March 3 7 hours ago, Jundis said: Have you tried to use the 90° angled connector in lime instead of normal connector just below/behind the headlights? Maybe it's the wrong angle, though... @Jundis Yes, the 90° angled connector won't fit the angle there, but I got your point and it can be like this: This is a little bit off in propotion but it has the right curve and can leave more room for the headlight in the side. Thank you for the idea! Quote
Jundis Posted March 3 Posted March 3 Looks better in my opinion! Sadly the part 44 doesn't exist in lime, yet Quote
eric trax Posted March 3 Posted March 3 On 2/28/2026 at 6:20 PM, 1gor said: Just look how long @eric trax develops his gorgeus Massey Ferguson 9 series trac... Actually, I need to clarify a bit. In total, building the MF tractor took me about three weeks. This project is only fifth in priority, so I work on it very occasionally. @falconluan I'm looking into this project because this tractor is on my list. So far, it looks very good for a Technic model. I'd try to cover the front hood with Technic panels. The frame made of connectors you're currently using makes it a bit difficult to cover it comfortably. I'm looking at the rear tracks, and something seems off with the scale. When I calculated the dimensions for the 107mm front tire, the rear track rims should have 6 and 7 studs in diameter. Your rear rim is much larger. Quote
1gor Posted March 3 Posted March 3 1 hour ago, eric trax said: Actually, I need to clarify a bit. In total, building the MF tractor took me about three weeks. This project is only fifth in priority, so I work on it very occasionally. I saw steps and cab (and chassis) video, so I thought you work on it more...sorry buddy Quote
falconluan Posted March 3 Author Posted March 3 4 hours ago, eric trax said: @falconluan I'm looking into this project because this tractor is on my list. Hi @eric trax, looking forward to see the version from professional hands 4 hours ago, eric trax said: I'm looking at the rear tracks, and something seems off with the scale. When I calculated the dimensions for the 107mm front tire, the rear track rims should have 6 and 7 studs in diameter. Your rear rim is much larger. You are right, my rear rim is larger, but I don't think it is too much larger. It's hard to get a blueprint of the new 9.450, below are what I've been using for the building: Seems that the dimension of rear track doesn't change in new version. I measure the height including track to compensate the meshing differenence between real one and lego parts, so the result is 8.5L at the front and 10.1-10.3 at the rear. With the large sprocket, the front size is pretty close. When using the 75mm offroad tire, the rear height is about 11.5L, which is around 1L larger than it should be. The 62.4mm tire(32019) or 68.7mm tire(52985, 61480, 44771) may be more closer in term of size, but their tread is more flatter than the 75mm tire, which cause them prone to slip against the tracks. That's why I chose the larger tire. I made the whole track length 1L longer trying to compensate for the larger rear wheel. It is clear that the result is not good enough. I'll try to test those tires more to see if they can hold the weight in good shape to fix this anyway. Thank you for pointing this out anyway. Quote
falconluan Posted March 8 Author Posted March 8 (edited) Some update: Redesigned the funtion distribution due to gear arrangement limitation and playable consideration, now the high speed gear/RWD mode is grouped with "rear hydraulic simulation", the low speed gear/AWD mode is grouped with rear and front linkage up and down. Also added a manual switch to enable/disable the front linkage operation, since if a front weight is equiped, lower and lift it together with rear implement doesn't make sense. Am thinking about extend the front drive shaft into a front PTO at the bottom of chassis, however, it seems that tracked tractor is not suitable for mowing work, so the front PTO is not very useful... Now using the 62.4 truck wheel as rear sprocket for better proportion, tested driving it for some time, its traction is ok and didn't lose the track on it. @eric trax I also covered the hollow part of the hood with some parts, I think it looks better Not a fan of the curved tank @1gor, I will put the flat 3x7 panel back and get rid of the 3x5 curved panel to make it completely flat. A new video: Edited March 8 by falconluan Quote
1gor Posted March 8 Posted March 8 At the end you have the last word; in last video it looks that front wheels are not driven... I'll keep watching your development, since I have just few hours per week for my projects... while ago I made drivetrain for 1:15 Jaguar Tetratrac similar to yours, just with 4 xl sprockets from Liebherr...and I noticed that Axion Terratrac is 3000mm wide, so you nailed width (my biggest enemy when building MOC) Quote
falconluan Posted March 8 Author Posted March 8 1 hour ago, 1gor said: I'll keep watching your development, since I have just few hours per week for my projects... Lucky that I have some lego time this month so I take the chance and built a lot, things will be different next month though... 1 hour ago, 1gor said: I noticed that Axion Terratrac is 3000mm wide Among the tractor brands I've built moc of, CLAAS shares the most information in their brochures, for example, they included a botom view in the old terra trac brochure, I got most of the width info from that picture 1 hour ago, 1gor said: (my biggest enemy when building MOC) Tractor building is FUN! Quote
1gor Posted March 8 Posted March 8 (edited) 2 hours ago, falconluan said: Lucky that I have some lego time this month so I take the chance and built a lot, things will be different next month though... . I can only plan on daily basis when I see how much work / obligations I have to do (mandatory) on particular day 2 hours ago, falconluan said: Among the tractor brands I've built moc of, CLAAS shares the most information in their brochures, for example, they included a botom view in the old terra trac brochure, I got most of the width info from that picture Tractor building is FUN! I prefer systems tractors but I'm stucked with Fastrac at the moment...of course I have some other plans - (re)build Unimog, build truck to tow Harvester and / or dozer, MB Trac is on my list (just have yo find time to fix PF Servo), I have unfinnished telehandler...so lots of plans but no time... Yes tractors are fun and challenge to fit lots of functions in tight space... Edited March 8 by 1gor Quote
TeamThrifty Posted March 10 Posted March 10 On 3/8/2026 at 5:14 PM, 1gor said: challenge to fit lots of functions in tight space Bigger Wheels = Less Tight Quote
1gor Posted March 10 Posted March 10 13 minutes ago, TeamThrifty said: Bigger Wheels = Less Tight I know what you mean, but I'm trying to make 11studs sterred axle with 107 tires that don't rub on 5 studd chaddis ehen driving and steering... Quote
falconluan Posted March 11 Author Posted March 11 15 hours ago, TeamThrifty said: Bigger Wheels = Less Tight 14 hours ago, 1gor said: I know what you mean, but I'm trying to make 11studs sterred axle with 107 tires that don't rub on 5 studd chaddis ehen driving and steering... Agreed with @1gor here, 107mm tire at the front may be the smallest possible scale for a Lego RC tractor with multiple remote controlled functions without using 3rd party small motors, for example, if you want: AWD with central diff, rear and front hitch, rear and front PTO, the list doesn't even include front loader, at least I failed to do so if keep the correct proportions strictly. Quote
1gor Posted March 11 Posted March 11 4 hours ago, falconluan said: Agreed with @1gor here, 107mm tire at the front may be the smallest possible scale for a Lego RC tractor with multiple remote controlled functions without using 3rd party small motors, for example, if you want: AWD with central diff, rear and front hitch, rear and front PTO, the list doesn't even include front loader, at least I failed to do so if keep the correct proportions strictly. Actually I plan to use ordinary PF Servo for steering, BuWizz motor for drive and medium motors for front and rear PTO and front and fear drawbar; alltogeather 6 functions and max width is (in Europe) 2.7m which is in 16.5 scale 20.5 studs with tires (that is why I need 11 studs axle) Quote
falconluan Posted March 12 Author Posted March 12 On 3/11/2026 at 5:24 PM, 1gor said: max width is (in Europe) 2.7m which is in 16.5 scale 20.5 studs with tires (that is why I need 11 studs axle) 11 studs is very challenging, with 5 studs width of hood(and probably 6 or even 7 studs), there is little room for fender support when the axle is swinging. I can have a 13 studs axle on the TT, however, with the 8 studs wide hood at the axle position, the room is still rather limited. And here is the tractor looks like now: Quote
1gor Posted March 12 Posted March 12 That is why there will be no fenders on front tires on my model and fixed on chassis for rear...if I succeed tjen it will perfectly fit your Axion... Kibd regards BTW your Axion looks better and better Quote
TeamThrifty Posted March 13 Posted March 13 On 3/2/2026 at 6:07 PM, Jundis said: interview of Markus Kossmann or Olav Kroigaard, they said it is more important to get the "feeling" of the lines than get every detail right. You are achieving this very well.. It captures the real machine. I love it. Its inspiring me to progress my optum 440. All the chassis, gearbox, steering and diff locks are done. Time to move on to the 3-point and the cab/bonnet. Feeling motivated! May even start a new thread with pics Quote
1gor Posted March 13 Posted March 13 2 hours ago, TeamThrifty said: Its inspiring me to progress my optum 440. All the chassis, gearbox, steering and diff locks are done. Time to move on to the 3-point and the cab/bonnet. Feeling motivated! May even start a new thread with pics Start it Quote
falconluan Posted March 17 Author Posted March 17 Both digital and brick version are finished, making instructions for it now Quote
Thirdwigg Posted March 17 Posted March 17 Yeah, this looks great. Well done with all the part placement. The tracks look perfect. Quote
TeamThrifty Posted March 17 Posted March 17 Mega model this. Pure technic as well, not a million system parts. I'm veery familiar with the claas axions and you've captured this really well! Quote
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