davejsp

Eurobricks Vassals
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About davejsp

  • Birthday November 5

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    Guimarães
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    Lego Technic and MOCs

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    Portugal

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  1. Hi, thanks for your feedback! Yes, there is... When i first started this MOC, i hadn't a clear idea of it was gonna be and the front suspension had just one single line of liftarms; later in the build, as the MOC became bigger and heavier, i noticed the front suspension and wheels were becoming stressed and misaligned, so i had to reinforce the structure and could only add parts at the front, as you can see, it looks kinda off but otherwise i would need to redo it from scratch. I do intent to improve this structure/chassis in the future and maybe do a new MOC with it.
  2. Hello everyone and welcome to another of my original creations. This time it’s a remote controlled buggy, i call it “Rapid Raptor”, there’s no specific reason for the name, i just like how it sounds. If you have been following my MOC releases, you know my previous two (the “Red Arrow SUV” and the “Sporty SUV”) shared the same chassis, which featured return-to-center steering and independent front suspension; this buggy was built upon it as well and expanded on its functionality by adding rear suspension. Ok, what so special about this chassis? Well, it doesn’t use any rare parts or specialized pieces like shock absorbers, steering racks, etc… It was done using only common liftarms, connectors, axles and pins. Now let’s talk about the buggy itself, it’s 41 studs long, 16 studs tall and 23 studs wide; i consider it to be medium-sized. It is fully suspended, using common rubber bands, which take less space and are surprisingly responsive, having decent ground clearance. The return-to-center steering is achieved using a PF servo motor; it is RWD, a single PF l-motor drives the rear wheels with a gear ratio of 1.4:1, it is slightly biased towards torque which is expected for an off-roader but it still runs fast as you can check on the video below. The PF battery box is hidden by the buggy body and inaccessible, but the button to turn it on or off is linked to the rear bumper, which can be pulled or pushed to operate it. The IR receiver is occupying the cabin, this way the sensor can receive the light from every direction. The rear axle is exposed and while many may see this as an unfinished section, i left it that way intentionally because i like to see the gears working and the suspension doing its job; a MOC should be the reflection of its creator. This is a MOC meant to be played outdoors, so i highly recommend using a bluetooth solution if you can, because the IR receiver is useless under daylight. I hope you liked it. For anyone interested, building instructions are available at Belle-Ve Bricks
  3. Hello and thank you for checking out my MOC, much appreciated. I call it "Red Arrow" due to its front design and color. This was one of the rare occasions in which i started building without knowing what i wanted to make. I was just doing experiments, trying developing a front section with steering and independent suspension using only common liftarms, connectors, axles and pins. After all, not everyone has those fancy, specific pieces for that purpose, so, yeah, why not?... I was indeed able to create it and that was the starting point, seemed appropriate for an off roader, so i kept going in that direction; only later on when i already had the chassis assembled, did i decided it was going to be an SUV. Now let's talk about the vehicle itself. It is 35 studs long, 20 studs wide, and 14 studs tall, somewhat small. At this scale, the smaller off road tires looked better, so i went with those. Being an SUV, it needed to have good ground clearance and it should at least be RWD, both requirements were met. I don't usually include a differential on off road RC vehicles due to the high probability of them becoming stuck, but i added one on this MOC, it just seemed right, and the front suspension (without shock absorbers) is so responsive it will help the SUV maintain ground contact for sure. One L-motor is used to drive the rear wheels, the ratio between the motor and the wheels is 1.167:1, so it is slightly biased towards torque. Another L-motor is controlling the steering, which returns to center automatically by using a rubber band driven mechanism. The IR receiver is occupying the driver's cabin and the standard Power Functions battery pack is hidden inside the large trunk. To turn the SUV on or off, you just need to push or pull the ladder in the back respectively. For me, the most interesting aspect about this MOC is definitively the steering with a decent turn radius and the independent suspension with long travel capabilities. They work flawlessly, so well i actually had to limit both the suspension travel and steering turning radius for this MOC to function properly. The building instructions point out the limiters, so you can choose not to include them if using this for your own MOCs. As usual, parts list and building instructions are available at Belle-Ve Bricks
  4. Thanks, yeah, it's my own version.
  5. Hi, i might try using that frame and test it out. I actually considered using a flat version but didn't go forward with it because it uses the old 4L differential, which a lot of people don't have. I understand and you got a point there, i just mentioned buwizz because it can deliver higher voltage to the motors, making it go faster. The objective with this MOC was really to achieve this kind of control using standard lego parts and source most of the necessary parts from a set that a lot of people have. Thanks.
  6. Thanks for your feedback and interest. Here are some screenshots:
  7. Hi, thanks for your feedback. I don't have any other type of battery unfortunately. In relation to the gearing, it's basically impossible to take a photo showing it all at the same time as it is very compact, intricate and spread both horizontally and vertically inside the MOC, but here are two pictures, one from the underside and another from topside.
  8. Welcome and thank you for checking out my MOC, i really appreciate it. As the name implies, this MOC features a "subtractor mechanism". If you don't know what it is, a quick search online will answser your questions, show various versions and what it is used for, but in a nutshell, it allows tracked vehicles to take on curves very smoothly and be remote controlled the same way as any regular RC car: one lever to go forward/backward, and another to steer (check the picture below for reference). I decided to do this MOC because there are plenty of subtractor mechanism examples and variations on the internet, but not many MOCs actually taking advantage of it, so here's my contribution. The set 42095 was the main source for parts, so you're up to a good start if you have it, only needing additional liftarms, gears and some miscelanious pieces. Since this MOC is intended to be a racer, i wanted it to be as fast as possible, but the subtractor mechanism requires so many gears to function, that it generates a lot of friction; the MOC itself is somewhat heavy for its compact size (760g) despite several design optimizations. Keep in mind it's only one l-motor pushing the vehicle as the second l-motor is dedicated to steering (unlike conventional tracked vehicles in which both motors push the vehicle). This means i had to reduce the motor to wheels gear ratio (which is 1,667:1) to give it some extra torque. I don't consider it to be slow (check the video below to get a better idea), but would love to see someone powering it with a buwizz on ludicrous mode as i don't have one. This MOC was interesting to develop. As always, for anyone interested, parts list and building instructions are available at Belle-Ve Bricks As you might guess, it took several tries, optimizations and redesigns before achieving the final design and functionality you see here. I don't usually share any of my preliminar version MOCs as their quality is subpar, but i decided to share the first complete beta version i built while developing this MOC. I forgot to take real pictures, but here are some studio renders of it. Enjoy!
  9. Hello everyone and thank you for checking out my MOC, i appreciate it. Anyone who's been following my work, already noticed i mostly create medium-sized fast RC cars, but this time i wanted to take a breather from that and do something a bit different, so i challenged myself to do something at a small scale, minifigure scale if possible, and this was the result. It's still a remote controlled vehicle, but i never tried build something this small, which bring me to my main obstacle: I just realized how big the standard Power Functions Battery Pack is, gosh, it really limits what kind of vehicles you can do at such small scale. The original idea was to make some kind of car, but the battery is so big, it's difficult to give the model a proper shape, not to mention the two motors to drive it, so i decided to build a truck, and the dump bed seemed ideal to hide both the battery pack and the IR receiver, so i went with that idea for this MOC, although at some point i considered doing a missile launcher platform instead of the dump bed, maybe on a future MOC if this one gets enough support or demand. Now that's describe the vehicle itself, it is 30 studs long, 13 studs high, and just 12 studs wide, quite small for a truck. It has a good ground clearance given its size; the driving is fully remote controlled, having one servo motor controlling the steering, and one l-motor powering two of the four rear wheels, the motor to wheels gear ratio is 1.667:1, which makes the truck go somewhat slow, but has a substantial amount of torque. The dump bed can be manually lifted via a crank on the side of the truck that controlls a small linear actuator which represents the hydraulic lift piston; the dump bed has a tailgate which is locked using an axle to represent the tailgate hook, it needs to be taken out for the tailgate to open as the dump bed is lifted. The battery pack and IR receiver are inside the dump bed, so there isn't much room for cargo, their wires are well disguised within the truck chasis, the building instructions describe how to hide them. The battery pack can be turned on or off via a button to the side of the dump bed. As usual, i tried to pack as many details as possible, look at the photo above to check them out, and check out the quick video below to see the main features in action. Hope you like my creation, feel free to leave your feedback in the comments section and tell me what you would like to see next. Thanks for your time! As usual, for anyone interested, the parts list and building instructions are available on Belle-Ve Bricks
  10. Hello everyone and welcome to another MOC release. This one wasn't developed from scratch, it expands upon the design/concept of another MOC i released previously, the "Nitro Dunner", which is a motorized, alternative model for the technic set 8048 "Buggy". This version improves mostly the design aspects of the base MOC, which was limited by the parts available on the source set. Some things remain the same, like using one servo motor for the steering; using a l-motor to power the rear wheels; and the independent front suspension. So, what changed? - The overall design was vastly improved and expanded, with some sections redesigned, adding details like a (non-functional) steering wheel, air intake, exhaust, tail lights, rear spoiler, massive side skirts. Some sections like the front bumper, hood, roof and rear were redesigned and most gaps covered. - The front wheels were replaced by bigger versions. - The front and rear axles are 1 stud wider and 1 stud closer to each other. If you have the parts, you can also make this steering mod for the IR Remote Controller to go with this MOC. As usual, for anyone interested, building instructions are available on Belle-Ve Bricks
  11. Thanks for sharing your point of view. Yeah, i just found it odd, so many views and almost no comments, but it's ok, really. I dunno lol english is not my native language and it just sounded cool to me, so, yeah, why not call it dunner XD By the way, does that name resemble any word it shouldn't? Or sounds bad in english? Oh, i perfectly understand that, thanks.
  12. Thanks for the support, i really appreciate it. I dunno what's up with eurobricks comunity... my thread has nearly 400 views at this point and only you went forward to say you find it cool. Maybe there's simply no interest for this kind of MOC...
  13. Hi everyone and welcome to my newest MOC. This time around, it's a motorized alternative model for the 8048 set "Nitro Buggy". I have that set and i know it's kinda old now (around 12 years), being released back in 2009, but i liked it when it came out and still do, i find the original model quite good, but don't understand why Lego went from a Buggy to a tractor as a B-Model, when this set as so much more potential. Some months ago i made another motorized C-Model from that set, the "Nitro Hot Rod" an old looking vehicle to differentiate it from the original model, but now i wanted to do the reverse and build something modern-looking, because... i dunno, why not :D even older sets deserve some love. Now, about the vehicle itself: aside from the 5 power functions elements used to motorize and control it, all parts are from the 8048 set, and very few will remain unused. Even if you don't have that set, the parts are very common and present on many other sets, so you probably can easily build this one. It's a pickup truck kind of vehicle. It has independent front suspension; return-to-center steering using one servo motor; one l-motor powers the two rear wheels; features some details like a front and rear bumpers, headlights, side mirrors, driver cabin, and a cargo bed (non-functional, as i didn't have enough parts left). It's longer than the original model and has great ground clearance. Overall, i'm happy with the final result. One thing i want to mention, as i did it on purpose, is the fact that i made it very easy to change the gears that connect the l-motor to the rear wheels, you just need to take out the rear left wheel and a bush, and you can easily swap gears and change the gear ratio if you want. I did this because a 1:1 ratio is better to play inside home, but if you go outside, maybe you want to decrease top speed and get more torque, so a 1.667:1 ratio using gears available on the set is recommended. See the picture below for reference. The video at the end of the page also has segments with the two gear combinations. For anyone interested, building instructions are available at Belle-Ve Bricks. Have fun!
  14. Hello everyone and welcome to another MOC release. This one wasn't developed from scratch, it is an enhanced version, or revision of another MOC i released previously, the "Dirt Devil", which is an alternative model for the technic set 42095. This version improves certain aspects of the original, since it was a pure C-Model, i was limited by the parts available on the set and had to make some sacrifices. Some things remain the same, like using one l-motor for the steering (with return to center functionality); using another l-motor to directly power one of the rear wheels; and the overall design and parts placement. So, what changed? - The "tracked wheels" were replaced with off-road tires, solving all traction issues. - The small front wheels were replaced with bigger wheels, fixing the low ground clearance in the front. - Additional liftarms and frames were added for increased stability. - The front spoiler and hood were reworked. - The rear spoiler was reworked and became bigger. - The side mirrors were taken off as i didn't think they added that much value to the design given the number of parts they required. For anyone interested, building instructions are available at Belle-Ve Bricks
  15. Yeah, i kinda was forced to do that because this is a pure C-Model, i had to use the available parts to build it, and the front axle really needed stability, so sacrifices were made, but i'm considering releasing a non-C-model version with additional parts and improvements.