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Didumos69
Eurobricks Dukes
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Everything posted by Didumos69
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Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingYou are right, but I don't see anything like that possible within the other parameters such as a pre-defined parts list and compactness of the axles (ground clearance, front and back clearance, i.e. the tires need to stick out to the front and to the back). So I'll stick to the option to build it with open or locked differentials. Yeh, people probably have the parts needed to build it with locked diffs. But I saw a challenge in building it with locked differentials with only parts from the set and I found a way. I will simply add this as an alternative build track in the instructions. -
Didumos69 replied to StudWorks's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingYes, I think you should.
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Didumos69 replied to StudWorks's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingThe willingness to refactor in order to solve seemingly minor issues is what Technic design is all about , imo! The knob wheels won't slip, but do generate more friction, especially under higher torque. (EDIT: The knobs rub while turning. The more torque, the more friction this rubbing suffers from.) You could try with 2 12t gears first. The way they are enclosed in a 5x7 frame should be enough to avoid slipping. In fact 2 12t gears are less likely to slip than 2 thin 12t gears or 2 thin 20t gears, as long as they are braced well. Flatter gears bend more easily.
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Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling@kbalage, I think I will add the diff locks as an option to the instructions. If the locks can do without the half bushes, it can actually be done with the stock 42099 parts list by moving a few things around.
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Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingJust watched it again. I like the section starting at 4:00 the most. Is suffers, but manages. (new page, so embedded it again)
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Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingSteering is fairly limited with and without diff locks. Max 20 degrees I think. The reason for that is explained in the OP.
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Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingAwesome video! Thank you very much @kbalage! We watched it with the whole family and my kids now want to go on vacation to Hungary !
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Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingCool! So you were close to this already.
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Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingThanks! Finally did a real slope test. The default longitudinal tilt angle is 3 degrees (leaning forward) and the max tilt angle in a climb is 44 degrees (leaning backwards), so overall it can climb 47 degrees, which is about 107%. Not quite as fast as my previous buggy : https://youtu.be/ek-_36MBD9k
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Didumos69 replied to ozacek's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingI forgot to mention this one:
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Didumos69 replied to StudWorks's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingAssuming the 8t gear is still on the same axle and the 24t gear too, that should indeed give the same behavior.
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Didumos69 replied to Ngoc Nguyen's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Didumos69 replied to StudWorks's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingWill collide with the 24t gear above. Only a bush-shape will leave enough space for that gear.
Didumos69 replied to Ngoc Nguyen's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingMaybe the teeth of the 20t gear are scratching the biscuit piece. It has small ridges outlining the 5 holes. One more thing. From a strict perspective, the rear axles are an illegal build. The CV-joint pivots span 5l and the suspension arms only span 4l (center to center). This makes the suspension arms squeeze the CV-joints under the given angle. This may have been done deliberately, to reduce the chances of the CV-joints popping out of the differential, but it's not proper.
Didumos69 replied to StudWorks's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingThat will collide with the 24t gear above. The middle section of a bush gives just enough space for the teeth of the 24t gear, but a beam, which is wider than that section, does not.
Didumos69 replied to Ngoc Nguyen's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingThe new CV-joints make a rattling sound. You can hear that very well when you make one wheel turn with the wheel at the other end of the diff. Maybe that explains what you are hearing.
Didumos69 replied to StudWorks's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingThat will be hard without using more space. Can you skip the red connector in which the 4l with endstop is inserted and use a longer axle instead. Then you're axle might be slightly stiffer. You might also try with two knob wheels instead of the 16t gears. They won't slip, but might give more friction. In general my advice is to always support axles on each side of each gear.
Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingThat's an option too of course. Great images! Thanks and have fun with it!
Didumos69 replied to StudWorks's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale Modelingkeep us posted.
Didumos69 replied to DugaldIC's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingAwesome!
Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingCool! Of course you can, that's what I share this for.
Didumos69 replied to Didumos69's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingThanks! You must be thinking this could be of use in some advanced suspension/steering setup . Especially strut-based suspension, as @romashkaman already pointed out.
Didumos69 replied to Metagross555's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingImages don't show.
Didumos69 replied to Jim's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingThanks for the review! Just ordered it based on this. See possibilities for another B model .
Didumos69 replied to Attika's post in a topic in LEGO Technic, Mindstorms, Model Team and Scale ModelingYou mean 'they are growing' . In numbers that is. Sorry for off-topic picture
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