JackBloomer5 Posted June 17, 2019 Posted June 17, 2019 Has anyone else noticed that the new cv joints, female joint specifically, is 4L total length rather than 3L total length? If this is the case it will make compact suspension as seen in the 42077 and 42093 difficult. I hope they release a 3L female joint down the line soon. Quote
z3_2drive Posted June 17, 2019 Posted June 17, 2019 (edited) If I were on the team I’d suggest high strength modular attachments to the motors, like a planetary reduction option (or two) and one with no reduction. That way you can use one motor in multiple models that serve very different purposes. This feels like a missed opportunity for sure. Edited June 17, 2019 by z3_2drive Quote
allanp Posted June 17, 2019 Posted June 17, 2019 18 minutes ago, z3_2drive said: If I were on the team I’d suggest high strength modular attachments to the motors, like a planetary reduction option (or two) and one with no reduction. That way you can use one motor in multiple models that serve very different purposes. This feels like a missed opportunity for sure. That's what I'd like to see. Separate the motor and internal gearing into separate units giving us the option to use use it (or not use it) in a way that best suits the model. Quote
PunkTacoNYC Posted June 17, 2019 Posted June 17, 2019 As an off-road-focused builder, I am super excited about these new parts, especially the planetary hubs and possibility of a high speed motor output. LEGO U-joints and CV-joints are undoubtedly the weak link in any well-built off-road MOC. I spent months redesigning the front driven axle of my Rocket crawler simply because LEGO U-joints couldn’t handle moderate torque and custom planetary hubs were way too large. Something interesting I noticed in the video was when they put the 4x4 on the ground at first and the steering motor turned or calibrated the wheels - it moved so quick and with lots of power. It reminded me of an actual RC servo motor. I think this set is a must for anyone who enjoys off-road building. Quote
AVCampos Posted June 17, 2019 Posted June 17, 2019 51 minutes ago, z3_2drive said: I’d suggest high strength modular attachments to the motors, like a planetary reduction option Such as this? Quote
agrof Posted June 17, 2019 Posted June 17, 2019 (edited) From Lego Technic Russia: https://pp.userapi.com/c850228/v850228654/174acc/fpSL2SqfIYk.jpg https://pp.userapi.com/c850128/v850128654/166c79/uXvoO6aX9QE.jpg Edited June 17, 2019 by agrof Quote
TeamThrifty Posted June 17, 2019 Posted June 17, 2019 45 minutes ago, AVCampos said: Such as this? Ha! i'd forgotten about that from my youth... the original planetary reduction!! There are no new ideas.... 43 minutes ago, agrof said: https://pp.userapi.com/c850228/v850228654/174acc/fpSL2SqfIYk.jpg Am i just being optimistic, or is the available working angle on this new cv joint much better than the old one? If it is, we need new hubs to make use of it... Quote
Zerobricks Posted June 17, 2019 Posted June 17, 2019 22 minutes ago, TeamThrifty said: Am i just being optimistic, or is the available working angle on this new cv joint much better than the old one? If it is, we need new hubs to make use of it... I managed to tried the CV joint angle. It can go up to some 40 degrees, but at such high angles there is quite some friction to overcome due to the sliding surfaces. It works reasonably smooth up to 30 degrees. But the plastic of the male part is quite soft and I noticed some scratches on the inner guides after playing with the joint by my hand... Quote
TeamThrifty Posted June 17, 2019 Posted June 17, 2019 I'm sad now... I'll probably mainly use the planetary's inboard rather than in the hubs... though in a new Xerion 30 degrees would be enough to use them as hubs. Mmmm Maybe not all is lost!! Thanks for the info! Quote
Zerobricks Posted June 17, 2019 Posted June 17, 2019 Also, gear ratio of the hub is not 1:5 but more close to 1:5,5. It feels very well lubricated and very well fixed. Quote
Zerobricks Posted June 17, 2019 Posted June 17, 2019 32 minutes ago, Zerobricks said: I managed to tried the CV joint angle. It can go up to some 40 degrees, but at such high angles there is quite some friction to overcome due to the sliding surfaces. It works reasonably smooth up to 30 degrees. But the plastic of the male part is quite soft and I noticed some scratches on the inner guides after playing with the joint by my hand... I tested the hubs with an RC motor and after a few minutes the CV joints seems to have "break in" and there is now much less friction, even at high angle of around 40 degrees Quote
Attika Posted June 17, 2019 Posted June 17, 2019 25 minutes ago, Zerobricks said: I managed to tried the CV joint angle. It can go up to some 40 degrees, but at such high angles there is quite some friction to overcome due to the sliding surfaces. It works reasonably smooth up to 30 degrees. But the plastic of the male part is quite soft and I noticed some scratches on the inner guides after playing with the joint by my hand... Do you think some silicone grease on the cv might improve on the perfomance? By the way how strong is the cv connection? It clicks in I suppose... Quote
Zerobricks Posted June 17, 2019 Posted June 17, 2019 2 minutes ago, Attika said: Do you think some silicone grease on the cv might improve on the perfomance? By the way how strong is the cv connection? It clicks in I suppose... I think the tolerances are a bit tight, but after first use they run smooth. Connection is very strong, I'd compare it to a ball joint. Quote
Attika Posted June 17, 2019 Posted June 17, 2019 Just now, Zerobricks said: I think the tolerances are a bit tight, but after first use they run smooth. Connection is very strong, I'd compare it to a ball joint. That is promising. Thank you. Quote
pleegwat Posted June 17, 2019 Posted June 17, 2019 Do we think the new CV joint is deeper than the old one? Quote
z3_2drive Posted June 17, 2019 Posted June 17, 2019 That is great news. Do you think these new hubs/joints could be used in a trailing arm style suspension? Also I’m curious if the hub is just another bushing design or if there is a bearing involved. Quote
TeamThrifty Posted June 17, 2019 Posted June 17, 2019 54 minutes ago, Zerobricks said: I tested the hubs with an RC motor and after a few minutes the CV joints seems to have "break in" and there is now much less friction, even at high angle of around 40 degrees That sounds great news, 40 degrees is respectable.. just need to see some pricing and hope for a decent retailer discount to offset the cost a bit. Exciting times! Thanks for the feedback, much appreciated. Quote
allanp Posted June 17, 2019 Posted June 17, 2019 (edited) 4 hours ago, AVCampos said: Such as this? Yes exactly like that, perhaps with a few pin holes (or even pins moulded directly into the housing) so it can be easily pinned to the front of an ungeared motor, so a studless version if you will. Combined with a motor that has very little to no internal gearing (>2000 rpm) and this will allow for more options, like easy and simplistic for younger builders, or more advanced totally custom gearing for more advanced sets. But I don't mean to sound so negative. I really am very exited for the new planetary gear hubs, they are a very nice and unexpected surprise and TLG deserves and huge THANK YOU for such a nice new element . Edited June 17, 2019 by allanp Quote
Limga Posted June 17, 2019 Posted June 17, 2019 (edited) 4 hours ago, Zerobricks said: I managed to tried the CV joint angle. It can go up to some 40 degrees, but at such high angles there is quite some friction to overcome due to the sliding surfaces. It works reasonably smooth up to 30 degrees. But the plastic of the male part is quite soft and I noticed some scratches on the inner guides after playing with the joint by my hand... 4 hours ago, Zerobricks said: Also, gear ratio of the hub is not 1:5 but more close to 1:5,5. It feels very well lubricated and very well fixed. Do you already have 42099 or the parts only? I am very curious, thank you for information. Can you confirm that an axle can be insert through the new hub? I am also interested if an axle will slide in LBG-part of the new CV-joint without friction or not. Edited June 18, 2019 by Limga Quote
Bartybum Posted June 18, 2019 Posted June 18, 2019 So essentially they’d be high RPM, super low torque motors, right? Quote
Zerobricks Posted June 18, 2019 Posted June 18, 2019 1 hour ago, Limga said: I am very curious, thank you for information. Can you confirm that an axle can be insert through the new hub? I am also interested if an axle will slide in LBG-part of the new CV-joint without friction or not. Axle can't be inserted through hub, you can only drive it with the new CV joint which has friction and axle can be inserted only 1 stud deep. Quote
keymaker Posted June 18, 2019 Posted June 18, 2019 4 hours ago, Zerobricks said: Axle can't be inserted through hub, you can only drive it with the new CV joint which has friction and axle can be inserted only 1 stud deep. So we won't be able to used it in the same way as current CV joints? I mean the axle has no possibility to move inside the connector? Quote
nerdsforprez Posted June 18, 2019 Posted June 18, 2019 14 hours ago, PunkTacoNYC said: As an off-road-focused builder, I am super excited about these new parts, especially the planetary hubs and possibility of a high speed motor output. LEGO U-joints and CV-joints are undoubtedly the weak link in any well-built off-road MOC. I spent months redesigning the front driven axle of my Rocket crawler simply because LEGO U-joints couldn’t handle moderate torque and custom planetary hubs were way too large. Actually, I don’t think that customary planetary hubs are too large at all. In fact, they kinda bring me to my thinking on this set should I chose to purchase it. The portal wheel hubs however do make applying custom planetary gear hubs difficult. I know I probably sound like a broken record at this point, but I will likely almost always advocate for third-party tires – and it is the same for this set. Though the Claas tires are in improvement over the old, large balloon tires, they are still Lego tires. They are not soft, not sticky. They do not compress at all. Tread is only one part of the goal of good off-road tires. Other complimentary pieces are stickiness and ability to bend and mold to rocks, surface, etc. With that in mind, I wonder with the ground clearance if 2.2 tires cannot be used. If the portal hubs are not needed then a custom planetary gear system in the hubs is easy. This is what I did with a crawler of mine years ago and it worked great. I actually think the speed for 42099 shown in the videos is still too fast. I would avoid the gearing up in the drive train if I purchase it. Or gear it down further with custom P. gears in the hubs and use 2.2 tires. Quote
Cardboy Posted June 18, 2019 Posted June 18, 2019 So for this set I believe were getting the following can anyone confirm? 4 Hubs 8 CV joints with axel socket 4 CV joints with axels 2 inline clutches 2 maybe more "biscuits" also if some one knows if there will be any 28z Gears? Quote
AVCampos Posted June 18, 2019 Posted June 18, 2019 Maybe some 7x11 frames? Those are present in SPIKE Prime and the Liebherr, so they could also be here. The 11x15 frame might be too big for this set, though. Quote
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