HBX 12891 DUNE THUNDER Brushless Conversion Part 2: 3D Printed Parts!
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- เผยแพร่เมื่อ 27 ส.ค. 2024
- HBX 12891: goo.gl/2y26Gm
RC Moment: goo.gl/AxJFV2
coupon code: A3748 (get 10% off any order with this coupon code)
This HBX 12891 DUNE THUNDER 1/12 scale electric desert truck / buggy was sent to me by rcmoment.com
Thank you very much!
In this video:
The HBX 12891 DUNE THUNDER 4WD sand buggy handles very well with its oil filled shocks. But it's just not fast enough for my liking. So I did what I always do in such situations: brushless conversion!
It may be the first brushless 12891 in the world. The messy wiring is tidied up in the this part of the video. And the Arduino DIY Open Source receiver is mounted, using a 3D printed mount, which will is designed in Autodesk Fusion 360.
We also have to address some ESC cutout problems… But finally it works just fine!
Conversion part 1: • HBX 12891 DUNE THUNDER...
Parts list:
- Servo Feiyue FY-S3 2.8kg 3 wire: www.banggood.c...
- 2440 4600kV brushless motor: www.banggood.c...
- 35A brushless ESC: www.banggood.c...
- High discharge 18650 batteries: www.banggood.c...
- Deans / T-Plug: www.banggood.c...
- Shrink tube: www.banggood.c...
- Sticky pads / double sided tape: www.banggood.c...
- Zip ties: www.banggood.c...
- Arduino „Micro RC“ DIY remote: github.com/The...
- Or any other 2.4 GHz remote: www.banggood.c...
Banggood Weekly Coupon Deals: goo.gl/D8B1Mu
Banggood Weekly Discount Deals: goo.gl/uGS7Lf
Some links above are affiliate links. You can support the channel, if you use them. There are no additional costs for you. Thanks, guys!
Features:
- 4WD
- 2.4GHz
- Splash proof
- Oil filled shocks
- Ball bearings
- Front and top LED lights
- 2x 18650 Li-Ion batteries with 1500mAh
- Mains voltage (100-240V) charger included
What I like on this car:
- Oil filled shocks (really!)
- Very good steering with no dead zone around the center position and very little backlash
- Good gearbox sealing
- Metal differentials
- Very grippy tires, not topheavy
- The steering trim pot
- The transmitter requires only two AA batteries
- Spare parts available
- Upgraded metal driveshafts available on Aliexpress
What not:
- Plastic driveshafts (with steel pins, however)
- Plastic spur gear and bevel gears
- Battery concept with two independent 18650 Li-Ion cells
- It’s not the fastest car in the world
Review / unboxing: • HBX 12891 DUNE THUNDER...
Bash: • HBX 12891 DUNE THUNDER...
STL data for the receiver mount: www.thingivers...
My GitHub: github.com/The...
My Thingiverse: www.thingivers...
Follow me on Twitter: / thediyguy999
on Flickr: www.flickr.com...
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If you want to support this channel: / thediyguy999
I've just found your channel! I'm really glad!!
Found it through the arduino videos
Welcome! I'm glad you like it. Arduino + RC = endless possibility & fun! also check out my DIY remote and stability control system.
TheDIYGuy999 , I'll learn a lot 👍
Excellent video! I like the custom parts.
Thanks. Yes, this thing is really nice now. I‘m still running the plastic drive shafts. No issues so far. And I have used it a lot.
Do you know where to get the metal gears by chance? I've looked everywhere but no luck finding an equivalent.
I think there are no metal gears available. But as I said, I never had any issue so far. And I have bashed it a lot. This thing is very robust.
I love your quality work!
Thanks for the praise
In this part of the brushless conversion a receiver mount is 3D printed and the messy wiring is cleaned up. If you like this video, share it around, give us a thumbs up and subscribe. Thanks, guys!
Hi mate I finally will be getting your reciever mount printed, BTW have you come up for a way of fitting a small 3s pack? I have a different body so fit mine in the roll cage.
Have a look at my setup on my channel if you like. Very modified drivetrain :) if I make more videos I will mention you for the reciever mou t and 18650 adapters.
Hi
No, I think the best solution is to use a battery strap. Be careful with 3S, my motor already gets toasty on 2S... Also make sure, that your "small" 3S pack is able to supply the required current. If overloaded, it will expand. I had a look at your video, runs good!
@@TheDIYGuy999 my mptor does not even get warm, must have the perfect gearing. Although yesterday I had to change the diff gears as they got worn after my testing period and now was ready to put it all together as should be. I noticed now they changed the gears, bevel used to be 13 and is now 11, big gear on diff was 38 but now 32, I be out today to see if I need to put a smaller pinion on..
Do you have the 16 motor pinion on? I do as recomended by hbx and Redcat to use with this motor.
I'm using the stock pinion. It works without issues and it is fast. But I still think 3S would be too much.
@@TheDIYGuy999 the stock is 12 or 13T dot you find d that to small, and car will rev to much? I tried 15T yesterday and think I stick to that.
BTW as we seek of to a buggy club track, my "toy grade car will be in a race lol
I've just finished my upgrade with the parts you've provided. I am having the same issue with it cutting out. What did you do to the receiver? I am using a Radiolink RC4GS 2.4G 4CH RC Transmitter and Receiver R6FG Gyro Radio Remote Controller system.
Use better "high discharge" 18650 batteries, which are able to supply the needed current.
Adding a filter capacitor for thee receiver could be helpful as well: www.banggood.com/1000UF-Filter-Capacitor-For-Flight-Controller-Receiver-VTX-RC-Drone-Multirotor-Spare-Part-p-1284837.html?p=NZ29024828314201605E
1:22 EVERY TIME!! 😆 it’s the best tho 👍
Of course. I mostly use my own Arduino remote. It's just better than most cheap 2.4GHz systems, because there is no dead zone around the steering center position. I think I already made around 20 pcs. of this receiver.
Excellent reply and agreed but I was referring to the picking and lifting of the corner on that specific style of 3M ds tape. I’d pay more for center crack and peel if was available.
LOL. Yes, this tape is just a pain in the b..t
can you please review Absima at2.4 or Tamiya Neo Scorcher?
What about parts support for this?
Yes, see here: www.banggood.com/search/hbx-12891.html?p=NZ29024828314201605E
Awesome!!!
Thanks for the first comment!
Your content is really nice, thank you from India, for taking the time! All the best and keep up the awesome work.
Thanks for the praise. Yes, making all this content is a lot of work, but fun. You can support the channel, if you share the channel link with your buddies. Thanks.
I will certainly share the channel link
thanks a lot
5:12 low voltage setting
You are setting low voltage at 2.8V discharche cutout normaly is 2.5V for 1 batterie bit you are using 2 in series so IT should be 5V cutout otherwise your going tot damage the batteries i think! Correct me if i,m wrong! Still havend got the car here but exepting IT next week
This setting is the voltage per cell. The esc automatically recognizes the number of cells, if you switch it on.
A super! Thanks then its oké
Hello nice job .i do the same with my st4 funtek but motor is too small .i buying the 2838 is better .please Can i have the plan or this peace please 3 d
Hi,
I want to know how to solve the problem with Pinion Gear . Can you recommend me? Thank You
Hi, I don't exactly know what you mean. Which gear?
sorry. I mean Pinion Gear Not durable, do you have a solution?
The small motor pinion? The one in my car is steel and can't really fail I think. As I said in this video: I strongly recommend to improve the gearbox sealing, If you want to drive it on fine gravel or sand.
HBX 12891 is a great toy car. But when I changed the 4000KV motor in 1902 I found a problem with my Pinion Gear.
Thank you
Just use the same motor as I do and you will be fine. Also have a look at part 1. the parts links are in the video description.
I bought the very same batteries for my 12825, and my top speed dropped with 8kmh, Samsung 25r gave same as original blue ones..
My car is 100% stock and maybe can't handle the 32a constant amp with 40 amp pulse?
What are your thoughts?
My batteries of this type are faster than the original ones. Are they fully charged to 4.2V? Are you using my 3D printed adapters? The car is certainly not the issue, but I never tried these batteries in stock condition.
@@TheDIYGuy999 I'm using magnets, they charge to 4.20
@@TheDIYGuy999 I will watch your upgrade videos a bit better tonight, maybe go through the soldering and clean the engine. I will upgrade to brush less soon. Maybe thicker cables from the battery compartment.
Magnets do not work for high current applications, because their internal resistance is too high. I believe that's why your voltage drops below the level of your original batteries.
@@TheDIYGuy999 I was thinking the same, would a nut be better? Can I measure conductivity with my multi meter? (Cheap yellow one)
Ninja Tree! :-D
Yes, they are very dangerous! Sometimes they just jump in front of your car...
Ha ha ha, yes they do!
Is their a way i can order your 3d design already printed (made) ,
On my Thingiverse, go to apps and select the printing service you want.
get a 45A its wort the 5 dollars more
35A is more than enough for this small motor. And the 18650 batteries will never be able to supply 45A
Fastt
Yes, it's nice with brushless mod. In stock condition it's a bit too slow
@@TheDIYGuy999 true. Now look like little beast coming but stable