@@karlheinzwill7898 danke Kalle! Mit dem stärkeren Servo und Zahnriemenantrieb mit größeren Rädern macht er richtig Spaß! Kann verstehen, warum Du so gerne Bagger baust und fährst!
Hey, thanks for your interest! Not yet, but I am planning to. Do you have experience with building RC models from a combination of 3D printed parts and off-the-shelf components? What would you want to see in a file package?
@@YensR Thanks, mate. The control you showed is exactly what I need for a RC whinch control. I just received some TO 92 sensors, but my first trial didn't work yet...
Hi Elliot! Long time no see! Are you still in the hobby? 3d printing is amazing! If you want something that moves material you have to put some thought into it, but it's worth it.
Thank you! :) Yes, the superstructure is 3D printed and the undercarriage is currently Lego, but will eventually also be printed, including space for some weights to lower the centre of gravity.
When I was little, there was a park here that had excavators you could sit on and excavate the mulch pieces they used in pace of dirt & grass. It must have been 6-8 inches thick or more. So you'd sit on the seat and grab the 2 handles to operate the boom. And you could spin 360 degrees at the seat. If they were still there, I'd play on them to this day 🤣 and I'll be 42 16 days.
haha, I know what you mean, I had forgotten about those, yes, same principle! I last saw one when I was an adult and yes, I played with it :D Like the ones you mention, it only had two functions (plus rotation)! I just uploaded another video of it (in wet sand), but in order to not spam everybody, I've hidden it: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-dJBxmXjVN20.html
Thank you Alex! When I paid for the materials, I was a bit worried :D But it all came out very well and makes great use of the space we weren't properly using before.
Very, very nice Grader, buddy ! But one question, did you buy it in spare parts in a store and then did the assembly, or did you create it all entirely and built it piece by piece ? Thanks for your answer !
Thank you Segomatu! This grader is my original design, which means I bought individual complete components such as the motors, wheels, and batteries, but most of the rest is built using simple techniques from steel and aluminium profiles and sections. You can see more detail of the build process over on my flickr: www.flickr.com/photos/22070130@N07/sets/72157626598857828/ Hope that makes sense, let me know if you have any other questions! :)
Hi, this is so awesome! Have you ever thought of selling the models you build? There's a quite big community, used to play around with the scale. 👏👍 Fantastic work u have done, love the detail
Thank you so much! I had some interest in my big grader years ago (which is a one off so not suitable), but not much at all for the small machines. Maybe i am doing something wrong. Also not sure what/how the best approach would be. I'm also on Instagram at jensr.builds if you are interested.
In my video: a servotester In an RC airplane: the transmitter has a switch and the retracts are plugged into a receiver which receives the command when the pilot flips the switch.
Agreed, the Melroe M880 in its dozer configuration was mainly designed for overburden and coal, so materials that are rather easy to push. And my machine has a similar weight to blade ratio. Compared to a tracked dozer, a wheel dozer should cover longer pushes at a higher speed, but I think adding the weight will improve the pushing performance with only a small speed sacrifice!
Da hast Du absolut recht Kalle! Es sollte halt ein besseres Spielzeug werden, aber es hat ein Teil nach dem anderen versagt... ...da hilft nur Neubau! Ich habe das Projekt in den letzten Jahren nicht komplett aus den Augen verloren und habe einige Teile für den Antriebsstrang zusammen gekauft. Es wird sicher noch etwas dauern, aber es ist nicht vergessen!
Hi Rauf! What do you mean? I tried to explain what it is used for in the video, but maybe I wasn't clear. The most common use is in modern tank drives, but it can be used in many other mechanisms, too.
All nice, but i wouldnt use the worm gear since its make lots of friction, and make it realy realy slow. If you intersting i made cute subtractor myself. I hope you like it.
Exactly. As I said in the video, I wanted the self-locking of the worm drive, but worm drives are inefficient (whether they are super slow or not depends on other stuff, too), so I did mention that other options exist :) Thank you, I'll have a look!
The front blade articulation is quite complex but you fit it in a pretty small space, nice one. At this scale the size of servos and motors gets a bit awkward I bet.
Thank you! :) I am very happy how everything fit and it's surprisingly sturdy considering that there are so many cylindrical and spherical joints in such a small space. There are quite a few mini and micro servos available. On the grader I am using the ubiquitous MG90 servo. There are decent and affordable servos that are quite a bit smaller than the MG90, so I would say that area is actually quite ok. On the motor side of things, everything is N20, I have not found easily available, affordable motors that are smaller. There are some, but they tend to be limited in selection and often would require external gearing to make them useable, so at that point the smaller initial size would be moot.
Thank you Joe! Yes, still have it, I need to finish the last update, including soldering the electronics and my least-favourite task ever, cable routing and plug crimping! But the last two years kind of threw a spanner into the whole plan...
I never become bored watching your video's featuring your grader!!! I just watch the 2 video's on your 8X8 that you working on. Amazing! They cleared up alot of questions for me. I am a newbie to this hobby. Watching from Payson, Utah. Thxs!!!
Thank you so much Scott, that is a great motivation for me. I am planning to do a few more short(er) videos explaining a variety of things, hopefully helping other people with their projects!
Thank you Ron, yes, I still own it, albeit somewhat in pieces. Need to get some time to solder my mouldboard electronic level control (and possible improve the code when its done) and then hand-configure several meters of servo wires and plugs to fit everything. Hate that sort of work. In the meantime, I have finished a smaller 1:32 grader but I definitely plan to get back to the big one!
Nice work! It would be cool to use nRF24 for radio link so you could make your own transmitter with dedicated physical inputs for all functions. I'm still intending to send a sbusmixer for you to try, but the cost of the STM32 chip I use went from $2 to $31 last year, if you can even find it in stock. So suddenly the few boards I have here for testing became quite precious, and for nRF24 you would need two :)
Thanks man :) No stress! I've heard of shortages, but have to say that is a crazy increase! The new breed of OpenTX with Lua is very configurable, I don't think I have even scratched the surface. There is quite a bit of convenience in these radios, but also a lot of stuff I don't need, so I'm always willing to explore more bespoke options! SBUS seems like it could be huge but I haven't really explored it yet, so will watch closely what you are cooking ;)
Cheers! This one is a one-off I built, but I am working on something more easily made. If you are interested, follow the channel, I promise there won't be any spam!
No, I haven't. I found that decent multi-turn pots cost a quite a bit money (I mean, not in the grabnd scheme of things, but...) and are rather bulky. The cheap ones as for trimmer pots are only rated for a few hundred cycles and that's not enough for a function that you regularly use. Instead I have used sail winch servos. These have integrated multi-turn pots for whatever number of turns they do.
@@YensR Some metal geared servos have a threaded hole that goes all the way through where you screw the control arm onto the servo. I replace the screw with threaded rod and relocate the PCB. Then a single small hole in the bottom of the servo case to allow the rod to pass through.... Makes a great actuator. I like to mount the potentiometer to whatever i am moving, like a swing wing B-1, so I get the throw feedback to set the limits for the wing sweep.
@@christopherleveck6835 Yes, I have used that method for quite a while on my grader mouldboard angle of attack. I upgraded it, because M3 only has 0.5mm Pitch and so you get very low speeds. It is a very convenient way of doing things, though, I agree. you can simply replace the servo potentiometer with another potentiometer of roughly the same Ohm rating. You can use rotary or linear potentiometers. You can even use the same pot and just extend the cables. Depending on how you build it, you might have to swap the outer wires of the pot around. Otherwise, it's a fairly straightforward modification.
@@christopherleveck6835 You can see my solution of an external pot, a gear motor and a servo electronic PCB here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-JJj0foy1LH8.html
No worries - believe it or not, this is the same grader. Well. Except almost every part was replaced and updated. So this grader does no longer exist as seen in this video.
7 years late, but I filmed a version meant for VR viewers like cardboard, if anyone's interested. (However the effect is only minor) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZfLzlFRaDlE.html
Not a bother, thank you for your continued interest! At this moment, I am sorry to say but the grader is not for sale. It's my personal development bed so to say. Additionally, due to covid19 restrictions I have not been able to work on completing the final upgrade to this machine and sadly my work on future machines has also been impacted. If you are subscribed to my channel, you will see any update first.
Thank you for your interest! This one needs a lot of manual work, so it would be very expensive. I am thinking about designing one optimised for laser-cutting - would you be interested in a smaller, simpler 4x4 motor grader?
@@caterpillarman5136 I'll be upfront with you: I don't know yet where this might go or how expensive it would be. But please read on. I would love to see more people using R/C motor graders, but this is just my hobby, so every hour I spend on making someone else's model kit/set, I can't spend on my own next model. The thing is, if I am making something for myself, it doesn't matter if I am using some obscure electric motor that you can only find at full moon when the crow creaks - because I only need that one. But it doesn't stop there. If I design something that needs rework (filing, drilling, tapping, undersized slots,...) or regular maintenance, some people will get frustrated. My plan is to have a simple but fully functional 4x4 grader that can be operated with a single 6.5-channel radio. The buyer would get a set of laser-cut parts and some special components (certain bolts, bearings, brackets,...). They would then have to assemble and paint and install components themselves that they would order from ebay or hobby stores. I'd have video/pdf building instructions available, but it would still require some experience from the buyer. The reason for that is that if I were to build a read-to-run grader it would take many hours and the shipping box would get very large and heavy. I have a plan for such a grader half-finished, but the second half is the one that hurts, so to say, tweaking it to a product that works for a customer. I would hope the parts kit would be less than 1500 USD with another 500 to 1000USD of parts/motors/electronics to be bought by the customer. Can I ask you what your background is, are you an operator of a full-size machine or an R/C hobbyist or maybe you have a different route into this hobby, would love to hear from you and what you would need/want from such a kit.
