XiaoR Geek Smart Robot Car Chassis Kit Aluminum Alloy Big Tank Chassis with 2WD Motors for Arduino/Raspberry Pi DIY Remote Control Robot Car Toys - Free Tools

In Summary: This tank chassis is very high quality, easy to build with included tools, and very versatile!The product comes shipped very well, parts are compartmentalized in solid packing foam. All metal frame parts protected by plastic bags or wrap, so they are in pristine condition. Using the online instruction PDF provided in the product description, the pictures and diagrams are very easy to follow, and are entirely in English. Assembly takes about 75-90 minutes at a comfortable pace.After assembly, some brief tests with my bench power supply provide a no-load current at 10 volts of around 600ma, and a stall current of only around 1 amp (per motor). These feel like they have a lot of torque and pulling power! As note, I have the top tensioner wheel a lot lower than in the assembly diagram, so your results may differ. All of the carrier wheels are on sealed bearings for low rolling resistance and long product life. When finished, there are many extra nuts and bolts that can be used to mount your accessories or sensors, or can be kept as spares. The chassis also provides many mounting holes with great flexibility for adding micro-controllers, sensors, servos, speed-controllers, and accessories.This is a high quality unit, I am looking forward to designing many future projects with this highly versatile platform!

This is my second robot tank - I also have a DFRobot Devastator...Fit and finish is good - the anodizing looks great (one are has a small blemish where anodize is lighter)...I got the yellow one due to the quick availability, but now glad I did as it looks really nice...Some issues to note:A) the most serious - one of the driven wheel bushings, the part that attaches the sprocket gear set to the motor, had a stripped hole, such that the #3M screw could not hold the gear set on securely - I was able to tap the hole for a 6-32 screw and was then able to tighten it...glad I could fix, since I bet getting another bushing would have been trouble and would take quite a while...also, in this area, I could not get the sprocket drive gears to align well with the non-driven wheels - if I got it aligned perfectly, the bushing was too close to the end of the motor shaft, so, I had to move/offset the bushing in towards the tank body - it's not awful, but I am sure it causes some binding/friction in the drive trains...B) while the nuts that hold the wheel screws are the locking type, all of the ones for the M3 screws are not...I was able to snug them down and I think they will hold, but only time will tell if they tend to loosen - would have been much better if they had included locking type...C) you have to be careful not to tighten the wheel nuts too much, or they can bind the wheels/bearing so the wheels do not rotate freely...One other thing of note, for me, was that the motors are 12V, whereas the ones in the Devastator kit are 6V...I did not notice this initially and wondered why the motors seemed so sluggish when I used a 7.6V LiPo like the one I used in the other tank - I am sure it will run much better when I get a 11.1V LiPo installed! I just assumed, but you know what they say...Once I get the new battery and adjust my code if necessary to make the two tanks' speed about the same, I can take the them over to my grandson's house and do some battle-bots!

Be careful. The pins that connect each track pad will separate on you when trying to attach the tracks to the five idler wheels and drive sprocket. After forcing the pin back in, I took the precaution of loosening the upper track roller and allowing it to slide in its vertical groove while I attached the track to the other wheels. Only then did I apply tension by sliding the upper roller to the top of its slot and tightening it. I wished the front idler had a push spring like on track-type tractor bulldozers so the track could be mores easily attached to the chassis.

I have to say this robot is not that bad. It more extensive than what I had expected, and plates are made from Aluimun metal. However, I found the tracks for the tank is too small and it's hard to fit in. One of the plastic holds the wheel broke off. I don't know why the designer didn't decide to go with more flexible plastic instead of hard plastic. Also, the parts didn't come with much instruction, so it's hard for your kid to assemble them together. If I bought this for a college project, this might be a good chose, however, I brought this for12 years old boy and it's a mistake. I probably will return this I will see if my kids decide to keep this or not.

First off, the packaging was great. Assembly was also well detailed. However, I thought I was ordering a different chassis than this one, but decided to make it work. However- the motors are the issue for me. One motor has two blue wires, the other two black wires. I have no idea which is positive or negative. Also, neither motor has a plug of any sort on it to plug it into an Arduino board. Like I said, I'll make it work. But if you don't feel like getting "creative", then I'd look for other chassis.

The product was fairly easy to assemble. Instructions were basically non-existent. It was a bunch of very small pictures with no explanation as to which piece went where. Another problem was that the kit was missing 8 screws needed for assembly that I had to supply. The platform is pretty sturdy, but the drive train had some slop in it that I didn’t expect. I doubt that I would purchase it again, and would probably look elseware.

I've had it for a year now, and it continues to work great. I used it to build a robot trucking around a cluster of Raspberry PIs with Lidar and other attachments. My payload is around 5 pounds, and I'm running the motors at 12 volts with no issue.The customer service has been excellent. I've had a couple of questions, and they've answered within a day, providing mechanical drawings and detailed specifications for the motors.I would recommend this chassis and Xiaor without hesitation. A really good bang for the buck.

Great chasis, just changed the wired motor very bad quality.