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Everything posted by 2GodBDGlory
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Those are some very long suspension arms! Looks like it would have some very nice suspension travel that way
- 11 replies
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- buggy motrs
- baja
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The biggest problem you have with that system is that the two wheels are currently rotating in opposite directions. You only need one bevel gear on the output, so you should start by combining the left and right sides into one solid axle, with only one gear. Eventually you'll probably also want to build some braces around the axles to keep them from bending forward/backward, but you should start by fixing that gearing
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[TC26] Icebreaker
2GodBDGlory replied to JoKo's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Nice job! That's definitely one of the nicer Technic ships I've seen, with some creative functions like the cycloidal prop system, the working helm, and the bubbles/horizon scanning! -
General Part Discussion
2GodBDGlory replied to Polo-Freak's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I like that idea, but you're right, it probably wouldn't work well in practice. Cool that Sheepo used it! I've always been curious about the crazy engineering going on in his MOCs, but I could never learn as much as I wanted without buying his instructions. This is always my go-to for a linear disconnect: It's certainly not going to be a "legal" connection with the old TDR extender jammed in there, but I've found it to be fairly reliable when properly braced- 5,504 replies
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- rant!
- Bionicle Technic
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LUCAMOCS Technic creations
2GodBDGlory replied to LucasMP's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Nice job using the turntable as a bevel gear! It's impressively functional given the available parts -
Interesting! While cars do have essentially the same size wheel all around, my understanding is that they could have different gear ratios front/rear for torque vectoring, which would have the same effect. Though it's probably more likely that they use some kind of fluid coupling like you mentioned tractors use! Anyways, that's probably enough off-topic for me...
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I guess that's one way of describing it! Moving the suspension pivots to the opposite side of the body does make for significantly less camber change than tatra, at the cost of more mechanical complexity for driven axles (unlike this one). It does work well in those jumps! Glad to see you having fun with this weird suspension. If I ever get motivated to build some fast RWD buggy/trophy truck again, it could be a lot of fun to use this type of suspension
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Would it be correct that if you fail to have the two axles geared similarly, you'll have some kind of "torque vectoring" going on, with more torque going to the front axle, and less going to the rear, even though the rim speed of each wheel would be the same? I believe that kind of thing is done in AWD cars in real life, though I doubt it's like that for tractors.
- 133 replies
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General Part Discussion
2GodBDGlory replied to Polo-Freak's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I hope you can figure something out! The last time I tried something like this was when I was making an RC manual-transmission-style transmission, where my 3L driving rings had to have enough friction to keep them from sliding into gear when not selected, but less than the full force of the white extenders. I wanted to use a 2L ring and a bush to make it work, but it wouldn't engage with enough torque to make it work, so instead I used this strange construction with a 2L axle+pin part, a 3L bar, and a stud pin: (The top two are what I did; the bottom is what didn't work) This is a different situation and solution than what you're working on, though!- 5,504 replies
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- rant!
- Bionicle Technic
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General Part Discussion
2GodBDGlory replied to Polo-Freak's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Are you sure that works in practice? I've tried using that technique with 3L driving rings, and I was only ever able to engage about halfway into the gear, because the non-notched side of the bush would limit the travel of the driving ring. Maybe the new 2L ones are different, but I don't see why they would be. I like the idea, though! I always like interesting gearbox solutions- 5,504 replies
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- rant!
- Bionicle Technic
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Yep! If you give them a proportional hub, they'll work proportionally
- 304 replies
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Yeah, this thing's really nice! So much functionality in such a small space, and very clever suspension. I like seeing those wheels in a Technic set, too!
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- polybag
- mars rover
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Old Tractor MOC
2GodBDGlory replied to DaanBrickProjects's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Welcome to Eurobricks! That looks quite well done. What part are you using for the seat? It's quite a nice usage!