Void_S

Great MOC and I wish it a great future at the Ideas platform, but let me share some grains of salt: As Agrof said, there is a money-size compromise, so I'd replace two expensive L-Motors with a single XL-Motor with some gearing changes. It should make this model cheaper following the scheme "one function - one motor", there is no so many TLG models with two or more motors in a drivetrain. Or put a single L-Motor keeping the space for adding the second one. The drivetrain. I don't feel very comfortable with worm gears as it doesn't look very save for the gears if some child try to roll the vehicle by hands. However I see no other solution to make another drivetrain with a given size and torque. 3L axles with pin that are sued to secure the battery block. Can they fall apart of you rotate the vehicle upside down? As an AFOL member I'm fully happy with this model, it's great!

It took a while, but I managed to make more compact and rigid, and, as a bonus, keeping the most possible original parts of the 9398 axle. I'd like to excuse for possible wrong actions, so moderators, please, move these post into a new topic if you decided that it's not a general 9398 4x4 Crawler discussion. Here is the 2.0 version of RM8's axle mode with a buggy motor: https://bricksafe.com/files/Void_s/9398-4199-crawler-mods/Axle with a Buggy Motor.lxf [x] This one is more like a buggy axle rather a crawler, as it uses a fast motor output and has the following gearing scheme: 20:28 + 12:20 + 8:24 (1/7 of the buggy motor fast output). I didn't add any diff locks and left them opened as the crawler is fast and powerful enough to climb over the obstacles "on the go", using its power together with torque (I just afraid that the buggy motor may broke the locked axle). [x] Here is the half-disassembled image with a trick that allows the gears to never click or grind each other - take a look at the 5L thin beam that keeps it stick to the diff. I tested it even pushing the wall in my house - no one gear ever clicked, only the tires started jumping (wheel hop, if you know). [x]

It's LEGO, just small black rims + 62701 wheel covers.

Yes, it's certainly the thing I'm talking about: self-unmounting pins that disengage the steering arm and rack after a hard bump and save the wheel hubs and suspension arms like in 42029 and 42037, self-disengageable gears that saves the drivetrain (some models even have "torque-slip" clutch gears) and other similar examples when some assembly consumes the stress load and easily blows off protecting the parts when it's going to broke them. Thank you for proving my speculation

Hello everyone. I have a question to TLG, or, if it has already answered or discussed I would apologize and ask to merge the topics, as there was a topic with questions to TLG designers (a-la "questions to TLG"), but unfortunately, I can't believe I didn't find it. The question that can't leave my mind is either TLG designers intentionally make some weak or flexible points after righty (or maybe even some crash) tests to minimize the risk of the parts broke by controllable deformation or expectedly un-assembling the model? The great example of 100% rigidness are Didumos69's MOC: they are just rock-solid (I really like them, by the way) and possibly just can't be broken, but on other hand they contain a lot of parts. There is another story for TLG sets: they contains less parts (yes, the marketing, pricing and other things, but it's not a topic here) but enough to provide some specific balance between rigidity and flexibility. For instance, I spend some time on modifying the 9398/41999 axles (I'll share the results once, it became just a monster buggy with the less possible changes) and I thought that the steering racks and arms are the weak point of the construction: bumping into some obstacle at the full speed may broke them easily (just a single axle+hole connection, plus very fragile 6536 connector), so I reinforced it by hard (I thought) but when I accidentally bumped it into the table leg, all the stress came to the portal hub and broke its mounting holes. I repaired the holes with a soldering-iron and restored the original TLG's construction (but replaced the 6536 connector with just a coupe of more strong parts), and I was surprised how perfectly it handles the bumps just bending a bit the 8L axle even when the whole model crashed at the full RC motors speed. Rigid enough to steer with a minimal backslash, and flex enough to absorb such crashes. I found the similar places in other models (the only thing that bothers me is 42070's crane arm that bends too much) so I believe that it's a kind of specific idea, especially for large and heavy enough modes that comes nowadays to safe their parts against being easily broken under such workload.

Correct, the chain works with old non-bevel gears (with rectangular teeth). I can't find the 40T's size now but can measure it and share in a couple of hours. As for 8T, please note that it works only with the old version (3647), as the new one (10928) has stiffening ribs that don't allow the teeth to engage the chain links.

Hopefully, it could be done using customizable power curves making the engine(s) start more smooth with no peak overload. Off course if-when it released.

I can't add even more! It's an amazing (ehh… Martian robo-dozer?). I don't know how to call it but I love it Really great MOC. I especially enjoyed the driller animation (such an awful monster nose) and how fast the auto-tilt reacts on the surface changes, nearly immediately.

@TeamThrifty, it sounds very reasonable. Personally, when I was reading your text I imagined a bit different kinetic sculpture - the Koi model that is made of levers and counterweights and moves (in the same manner, probably) by the air movement (wind or breath), not by a number of gears and lever. Just stays somewhere and moves independently while you're just watching.

I think that it's mostly promo for 42077 to warm up the customers willing to get it. Anyway it's too explicit to be a hint: "It's Mustang in a Lego Technic livery. Guess what kind of a real car will be one of next sets?" Porsche and Bugatti were very hidden until their release.

I build this model (yes, I reverse engineered it but will not publish anything related to it as I respect the IP) and can say that it's something should be done with a tail - it really moves in a wrong direction violating the "bit by bit" sequence. I would add one more levers pair to move the tail correctly.

It could be not a big challenge if they use new gearbox elements (I really hope), but at least I want to not having V2 or V4 (something that appeared in a similar scale models)

I afraid that it could be something between a loader and dozer (a dozer that can raise the blade/bucket higher then normally) as we just got a forest harvester and more or less usual wheeled dozer. Whereas the tracked dozer has been released years ago.

Here is the translation: 42088 - 车汽升降机 - Car lift 42089 - 汽艇 - Motorboat 42090 - 潸逃卡车(回力车) - Escape (getaway) truck (pullback car) 42091 - 逭击警车(回力车) - Sniper? police car (pullback car) 42092 - 救煖直升机 - Rescue helicopter 42093 - 雪佛兰 Corvette ZR1 - Chevrolet Corvette ZR11 (previously was introduced as Super Car) $49.99; - 579 parts 42094 - 履带式装载机 - Track Loader 42095 - 遥控特技赛车 - Remote control stunt racing 42096 - Porsche 911 RSR (previously was introduced as "GT Race Car"), $149.99 - 1580 parts. Maybe the "licensed cars" are just examples of how the models look like? 42093 is close to B-model of 8041/42041 Race Truck or 42075 First Responder taking into account the parts number, so it can't contain so many features... "GC Race car" probably, is just an RWD car like 42077, but in a circuit race livery, a-la 42077 with 42039 aerodynamic kit.

Some my thoughts on the sets, their price and parts count. 42089 Power Boat, $14.99 - 174 parts. Is that another "Hydroplane Racer" or more boat-ish vessel? A pull-back pair: 42090 Getaway Truck - 128 parts ($21.99?) 42091 Police Pursuit, $19.99 - 120 parts Reminds a well-known pair of Getaway Racer and Police Interceptor. A truck and a car? 42092 Rescue Helicopter, $39.99; - 325 parts As it was mentioned earlier, it looks a bit overpriced for its parts count. Maybe a some interesting comes? I do think that it's due to some branding tax. However, it possibly may have a lot of gears inside, like main and tail rotors, the winch... 42093 Super Car, $49.99; - 579 parts The parts number and price reminds me a B-model of 8041/42041 Race Truck with 56mm wheels. Mayme closer to 42075 First Responder, but with more details. 42094 Tracked Loader, $79.99; - 827parts I wish the B-model is not a snow groomer, please... 42095 Remote-Controlled Stunt Racer, $99.99; - 324 parts Following to previous RC models, I suppose that A-B models should be a road-track and off-road-like cars. 42096 GT Race Car, $149.99 - 1580 parts Looks like a successor of 42039 24H Race Car ($129 / 1219 parts) and 42077 Rally Car ($100 / 1005 parts). The price seems to corelate to the parts number, so it definitely should be a car on 68.8mm wheels and with no motorization. Doors, hood, trunk, HOG and a face engine. As it's a GT, V6 or V8? The B-model... SUV, Buggy-like car, what's next? That should be something with a bigger road clearance, may be some Pickup?

They contain the metallic and electric parts that will have an oxide cover that will break them. I would be advised to remove the PF parts from the models, disassemble them and apply some Loctite-like electric parts cleaner. The faster you did that the more chance to save them and revive.

Yes, exactly. I spent two more minutes to make a proper assemble in Photoshop, as I don't have this set. Here is:

Wonder if the bigger number of contacts (6 now versus 4 in PF) means that it has some more features like different behavior for the reverse, like blinking instead of the constant light that is perfect for some warning lights on construction or tow vehicles (it's always nice to have such things out of the box). Otherwise, it's strange to have two more wires for no purpose. Anyways it looks more compact than PF ones, too bad that they can't be stacked using this new socket. Say goodbye to Christmas tree-like MOCs

Since there are many Silicon sprays were mentioned why not to make a short recap? Cyclo C33V Silicone Spray Lubricant (Silicone + Oli distillate + Heptane + Propane). Used by LPE Power, looks like safe. Petroleum Jelly - provides too thick layer, may increase the slip resistance for LPE. Wet platinum premium lubricant - used by nerdsforprez, no issues were observed WD40 PTFE Spray (not WD40 Spray!) - used by Berthil for GBC, no issues were observed As for me, I used WD40 Specialist Silicone Spray (Geraniol + NSF H2) with no any issues, but for a too short period to say something.

Most probably it is! The rotation must be stopped when something (rotating superstructure, crane arm etc.) stalls touching the limiter, whereas the TLG wheels don't provide enough friction to really stall trying to push the wall. I tried to do that (wanted to reach the power battery overheat) with modified 9398 (with no diffs and very strong reduction), so it started jumping instead of stalling.

You're welcome! I just did my best to turn amazing Attika's model into the LDD, plus bring some changes made by IRONDUCK, so now the link refers to the more ore less finished model

Exactly, it perfect moves when even one wheel has a firm grip. Great model, too bad that don't have 4 L-motors (so far)!

Nice video, thanks! Interesting that 2WD (RWD) and 4WD buggies lands differently: whereas RWD ones do that flawless (except the cases when they touch the ground with suspension liftarms), 4WD must keep the RPM at the same level before the landing, otherwise it can make nose-over because the transmission and motors work like brakes.

They are already available: book 1 & book 2 Great, so now it's time to publish the whole LDD model. Isn't it? https://bricksafe.com/files/Void_s/42083/42083 Bugatti Chiron.lxf

Yes, it clicks for sure (I've built it physically first). This connection isn't perfect but I just reproduced the original assembly of RM8. You may see how it was done in his video (2:38). And... I think you hadn't to quote the images). I like RM8's idea in general, but is still trying to make it more braced and more compact, however, it's not an easy task because of the buggy motor shape...