Krzychups

Eurobricks Vassals
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About Krzychups

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    Ford GT 42154

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    Poland

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  1. Wow, good job! You have done something I tried to do (look here), but much better. I'll try it. What I'm concerned about, are mounting holes - there aren't many of them. Edit: @gyenesvi I cannot quote while editing. You said: "What does that exactly mean? At first I thought you'd want to change the outer diameter to 24mm instead of 28mm to fit 24mm motors, but it seems you are talking about something different?" Regarding it, I meant that these planetary gearboxes are made for motors which have got about 2 mm shafts, for example the A2212 motor has got 3,17 mm shaft, so it wouldn't work. I hope you undestand it. Much easier would be using 3650 motors, but they are big and powerful.
  2. Hello, I have written to the sellers of these planetary gearbox (the first planetary gearbox and the second one) if it is possible to change the diameter of the gear bore to fit the motor. I have received the replies that it is not possible. And that's the problem. Another option is drill 3.17 mm diameter bores if the gears' sizes are enough big.
  3. I mean something like this: I don't have any idea how to connect it to the planetary gearbox's shaft. Usually they have about 6 mm shafts. If you search: 28 mm planetary gearbox, you will see some links to different factories that make planetary gearboxes and other stuff. I'm going to find a factory. Edit: It doesn't have to be a planetary gearbox with a single ratio, there can be different versions of such gearboxes.
  4. No, the metal adapter to a lego axle. My mistake.
  5. After a break I want to come back to a planetary gearbox for A2212 or other 28 mm diameter brushless motors. I'm not sure that the A2212 motor will be sufficient for lego vehicles. The other option is to use the 2838 one. Things I need to include: A 28 mm diameter planetary gearbox for the A2212 or 2838 brushless motors. Fixing points for lego bricks to the motor and the planetary gearbox (something like Zene has done but with points on the motor if possible). A metal lego axle adapter. The reduction of a planetary geabox - I will use a 4:1 or 5:1 or double-stage planetary gearbox with for exaple a 16:1 reduction. What do you think about it? With the small reduction (4:1, 5:1) the motor will be hot faster than the double-stage one. Also, I have to choose the good kv. I need to find a good motor (shaft, cable connector etc.) Design: I can take inspiration from this, but at the moment it's not the most important thing to concentrate. I'm worried about how will I do the metal axle adapter. At the moment I don't have any idea. I need to contact the factory that makes the planetary gearboxes to establish the parameters. Then when I have the planetary gearbox I need to make a preliminary model of the whole thing with the motor and gearbox. I will post here on the forum as to the design. I'm curious if anyone would like to buy it somehow. If so, I need to design it in Freecad as I have the educational version of Inventor.
  6. About 74 mm. Probably no because a 2445 motor has got 2.3 mm shaft - but a 2435 one has got 2.0 mm shaft. Driving a model I don't feel the esc has got brakes, I brake by the motor. Last time I drove the rc model (I've charged the battery 2 times) it felt like it was going slower (on the same normal road). I've tried steering on two different radio controllers. Why is this happening? I've rebuilt the car model a bit but it doesn't seem to have much effect (or it does).
  7. Well, 2wd normal rc cars have got about 30 degrees caster angle, I'm not sure what caster angle to use. I drive more on straight lines than on curves. Using Zene's motor and differential its only possible to build 2wd rc car. By the way I am also building an onroad lego rc car (because its easier than an offroad car) and I'm curious if rc onroad oil shocks are worth buying.
  8. Hello , I want to ask you some questions: Why do you use so powerful motor? As I see it is probobably 3650 motor. How have you mounted it? Intresting how you have done the steering. Can you take more photos? I have tried to do something similar but with a 2wd model and up to 30 degrees caster angle. It hasn't performed well. Has your model got caster angle? To me it looks too complicated, do you think to simplify it? You use rc wheel hubs, won't the wheels stick out a bit behind the bodywork, or vice versa? Anyway, nice rc car!
  9. Hello, This question is directed for @Ryokeen and @Daniel-99: which rc oil shock absorbers do you recommend? I know that I have to choose the suspension travel and the viscosity of the oil for the shock absorbers myself. I want shocks typically for buggies. With a 3d printer I've got a lot of options for attaching shock absorbers.
  10. Hi @Krxlion, I have Creality Ender 3 S1 pro. I have chosen it because I sometimes want to print from nylon (nylon needs to be heated to a high temperature - on this 3d printer it's possible). It doesn't have to be this particular printer. What I want to point out is that you will probably need a dryer for the filaments (some filaments absorb moisture) and filaments for printing - not sure if you will fit into the budget. I've made a battery case for now, but I'll probably start making other cases (I have a receiver for a Dumborc x6fg remote control, and also an esc 35a same as you have) ;)
  11. I have an idea to make segments: steering on the front (camber adjustment and toe in, toe out, rc shocks) and rear of the car like in real rc cars and make adapters for lego bricks. It's hard to say if I'll succeed, I wonder if I'll go for a fully printed chassis. I need to ask people who have real rc cars if there is a chance to do the rear segment (if the parts will not be too expensive). Possibly in the future I'll look into 4 wheel drive, although it's hard to say if I'll succeed. For now, this is just idea.
  12. Remember that the motor must have 2 mm shaft - a2212 has 3.17 mm. My mouldking servo motor is glued so I can't take it apart. I don't know if other motors from aliexpress are glued.
  13. So is it possible to solve the problem? Can you show it on photos? Its better to understand. I dont want to use a planetary gearbox - its hard to find one that fits perfectly with the a2212 motor.
  14. At the moment it's possible to use it when you use 11950 wheel hub or similar (the distance between the axle and the ground is 3L, look at the photo). It's possible to use 8:40 or 12:36 ratio. You can use it in AWD models. To fix the gear you have to use the @janssnet method. 20240119_172050 by Krzysztof Czech, on Flickr motor by Krzysztof Czech, on Flickr
  15. Hello, at the moment it looks like this: photo_2024-01-26_17-23-31 by Krzysztof Czech, on Flickr photo_2024-01-26_17-23-25 by Krzysztof Czech, on Flickr photo_2024-01-26_17-23-18 by Krzysztof Czech, on Flickr I haven't printed it yet. It's not possible to use 24:24 gear ratio. Okay, I partially agree with you. I use smaller wheels :)