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Everything posted by Tommy Styrvoky
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Interesting performance, I have thought about using RC grade motors in some of my models, as TLG's aren't always powerful enough, or are too slow. I think it would be fun to see the same components installed into a trophy truck chassis, and drive it over some ramps.
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I don't mean TLG producing RC motors, as we all wish our dream would come true, but it probably won't. I think this model would be a good platform for putting RC motors into, and it would be interesting to test, as it is a barebones robust design, and would probably be have very impressive performance.
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All it's missing is 2 RC motors, and some simple suspension... I bet with that the model would be even more mental with a robust suspension setup.
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You could always disassemble/ modify the end of one connector, to fit different wire and then resin cast the parts in bulk. The only hard part from that is how to make the contacts for the connectors.
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Rather interesting, though maybe it could be further improved by replacing the flawed IR with an RC setup, as PF is rather limited in range outdoors. Also how did you make the shells for the electronics, they look great.
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Technic Pub
Tommy Styrvoky replied to jantjeuh's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
yeah I have noticed the same issue with refreshing when advancing between pages. The page is just semi opaque, and then I just reload the page. I'm using Google Chrome, I checked Safari too, same problem. Can anyone confirm that it also effects windows browsers too? -
Technic Pub
Tommy Styrvoky replied to jantjeuh's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I think it is more chatty, though I only venture out to the Star Wars forum occasionally. In terms of it being more friendly it could be from a variety of reasons, maybe more mature builders, or people being more open to creative criticism. I think people in the Technic forum are open to sharing Ideas, so if it's a friendly environment builders will be more open to sharing ideas/designs, to inspire others. -
[MOC] Autogyro
Tommy Styrvoky replied to paave's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Reminds me of Far Cry 4... all of the good times flying above enemy convoys in a Buzzard and dropping explosives. Great job with the open and angular structure, it's too bad that it can't have power to the main rotor via u-joints, though I think it would be too bulky. -
Maybe you could use an XL motor to power it, as it has higher torque/lower RPM, so less wear on the internal planetary gearing for the motor. Maybe for powering it you could just have a simple open terminal push button, basically if people want to see it operate, they hold the button, as soon as they release it will stop. Maybe some sort of simple timer program for an Ardunio could work, with a button. Another thought is maybe a toggleable switch with some sort of mechanical timer, if you had a high gear reduction, just use a flag on it to set off a tensioned reset switch, then it would reset, say after 10 turns off of the output. It would behave similar to a NOR latch with a reset timer, basically one input would stay on permanently, until a timer sends a signal to the opposite side to toggle the switch back to the open position. You could have some sort of brick built housing attached with the switch encased, and a brick built button that has a catch on one side. It locks down when pushed on, and when the flag rotates around enough times, it will release a catch that will release the button to it's open state, with a spring to assist the button upwards. Basically when the button is down, power is being provided through a PF switch, and when it's up then no power is being provided..
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Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr This model has been quite a challenge, and also a lot of fun to see come together. I think this has to be the longest time I have spent working on a model so far, it took 3 months to develop it, and over a week it was converted into physical form with 15 Bricklink orders and about $400 of parts. At college, I have been currently very busy Organic Chemistry, and has had little time to edit and compose photos I took in August. Over the last 3 months I have worked on animating the digital model in blender, and working on the video. Finally today, after a week of intense studying for an Organic chemistry exam I was able to add the final touches and post it prior to my Thanksgiving break. Enjoy. More information about the model and film here. Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr This rendition of the Sherman is very close to being perfect, though with an overlay of blueprints, some minor changes could be made, by shifting the upper half of the hull backwards one stud, and maybe replace the tracks with custom four stud wide versions. I would like to potentially modify the design, and create a modular system for the Sherman, as I originally foresaw prior to creating my Sherman crab variant of the M4A2. This would include the both HVSS, and VVSS suspension options;The choice between the early D50878 turret with the 75mm gun, or 105mm howitzer. A modified D50878 turret bustle for the 17 pounder used on the firefly, or The late T23 turret with the 76mm gun, and modified mantlet for the M51 Super Sherman's 75mm gun. The ability to modify the hull between the long, welded hull, early welded hull, and cast hull could also be options, though designing a cast hull may prove to be a challenge. Potentially the option to change the front transmission housing could be an option, though for the early three part housing, the structure may prove to be difficult. Finally different powerplants could be chosen, though there will be some serious design challenges to make the 30 cylinder Chrysler muiltibank engine, and a continental radial engine fit. Though a Cummins V8 engine wouldn't be too difficult to make for the M51 Super Sherman. Though this may be a long term project, due to the complexity of some of the designs. This project has been fun to work on, and it taught me a lot about the differences between the Sherman variants design. I am proud to have made major changes to my old Sherman Crab's hull design, and maybe a potential option for the modular system would be to replace the space with drive motors for the Crab version, and for a pneumatic bulldozer version. Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Some scenes from the movie that were recreated. Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr Lego RC M4A2E8 FURY Sherman Tank by Tommy Styrvoky, on Flickr And an 8K image of the Tiger battle with Sariel's Tiger XL This was quite a challenge, as I had to rotate the entire turret in Gimp, and replace all of the covered tiles with either renders, or copies of other parts from the photo. Though the end result was worth it. Lego FURY vs Tiger scene by Tommy Styrvoky, on Flickr
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Oh... I didn't notice how wide it is, well I guess it opens up a bunch of opportunities for driving double bevel style gears, I wonder if it will mesh with the 60z, and 28z turntables.
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The new worm gear is awesome, so many useful applications. now there can be more compact reduction systems with an 8z gear that are only 3 studs wide. Hopefully lego continues to offer both gears in future sets, as they both have their advantages and disadvantages.
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That's a really cool opportunity to see and drive one in person. It's great that the company was able to reach out to you. I can't wait to see the video, it looks like a lot of fun driving it through the snow.
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Here's a test of a slightly updated design, it functions perfectly with little slippage, and resistance. I'm testing it in the chassis of my next MOC, the IS-7 Tank IS-7 chassis WIP by Tommy Styrvoky, on Flickr IS-7 chassis WIP by Tommy Styrvoky, on Flickr IS-7 chassis WIP by Tommy Styrvoky, on Flickr And a short video of it's basic operation here dual differential steering mechanism by Tommy Styrvoky, on Flickr
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I think that's about as small as you're going to get, though the problem is when you rotate the turret, the 1/2 bush will move upwards/downwards. Also it will be kind of difficult to make a compact means of driving it from below, it would be better to have the input at 90° to it. If there were more photos of the chassis, I could potentially see an 8z/worm gear cam mechanism being mounted below.
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[MOC] [WIP] The Command of the AT-AT
Tommy Styrvoky replied to LiLmeFromDaFuture's topic in LEGO Star Wars
The main reason for the leveling the feet, is because they could get caught on things, using gravity would work, but It wouldn't be too difficult to have a linkage that keeps it parallel to the knee joint.( potentially less issues leading the the whole model falling over.) For moving the hips, a cam mechanism would work, I was thinking it would drive a linkage at the end where the leg attaches to the hip.Though it would have to be rather robust, maybe a worm gear driving a small turntable, as any worm gear driven axle would be twisted beyond recognition without proper reinforcement. This would be a necessity, as it allows a small displacement of the leg vertically, so it can travel forwards without scraping on the ground. These parts would lift all of the weight of the model. For steering, the easiest solution would be a mechanism that would change the stride length on one side to be shorter, while maintaining the cadence and synchronization of the legs. Maybe shifting the point of the driving linkages to the legs would work.( it would function like a differential in a car, one path is shorter than the other, thus slowly steering the model..) I think it would be simpler to just use the hips to support the model, and lift it, and the leg motion linkages could just be routed in the center of the legs, though It could be possible to fit it within a 2 stud wide space, but it would probably have to be wider to be structurally solid. Maybe it would be easier to use a NXT or EV3 to control it, as the hips would have to be individually controlled, if it's on 3 legs at a time. so 8 motors would be needed, or some sort of transmission to route power to a hip and a leg (3 motors). Though it would have to be rather durable design, or just use worm gears to power the leg motion and hip motion. -
[MOC] [WIP] The Command of the AT-AT
Tommy Styrvoky replied to LiLmeFromDaFuture's topic in LEGO Star Wars
Motorizing this model is probably not possible, you would have to start from scratch, as the legs require routing of parallel linkages, and some method of providing power to rotate the arc on top of the feet, to keep them parallel to the ground. the upper hip joints would cause a lot of issues with being too bulky to route power/be rigid enough. The biggest issue would going to be providing sufficient power to the model, you would probably need at least 2 Xl motors to power it, maybe 4? so 1-2 8878 batteries. Another issue would be synchronization, if the legs got out of sync, the model would topple over, so a mechanical mechanism could be used to automate the walking motion. It would also be a potential option to add a steering mechanism, if you are to shift the hip joints side to side. yes it's possible to do, but this scale may be too large, and with the current design, it would require an entirely new design, and would compromise the details for functionality. My guess is the only major limiting factor to the fact that any torque bearing axle on this model will be twisted and broken, so every joint would need a turntable to support the weight. Wheeled vehicles are easy enough, as the multiple suspension components bears the weight, though with this model 2 legs have to be strong enough to bear the whole weigh. Maybe someday I could get to building a 1/2-3/4 scale of this that's motorized, though the main issue is the high center of gravity. I will start with an AT-TE first. So from a practicality standpoint, I think just continue trying to make this model the most detailed AT-AT, motorizing this is a whole new set of major engineering headaches. -
JJ2's Custom part designs
Tommy Styrvoky replied to JJ2's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
What about adapters for conventional servo motors (like a pin connector with a hole for the control rods, and a mounting bracket for the servo.)