OTTFF Preassembled Robot Tank Chassis Track Compatible with Arduino Tank Aluminum Alloy Chassis Raspberry DIY STEM - Speed of 20m / min Maximum Load 2kg

Very solid product. Came with extra nuts and bolts. Everything went together perfectly. Great chasis for the price.Treads are a little difficult to assemble, just be careful when doing so.

The shipping was incredibly fast and well packed. This will be used to build an autonomous rover, so for the price and parts you get it was a good starting point for the build.

I loved the fact that it came fully assembled. I just had to adjust the track tension. The 12 volt motor worked great with a good amount of torque. I use the Explorer Printed Circuit Board ESP32 controller from "Anyone Can Build Robots". The PCB fit just right because the Chassis has slots to adjust to most PCBs. Overall this product is very good.

Packaging, Shipping, Seller Response Timing : All were Very GoodInstructions, Non existingHad to look at other builds on U tube for guidanceDrive Wheel Assembly is confusing When all screws are tighten The track will not align with wheels.Finally found a picture with the center screw loose allowing the track to align correctly with wheels/Now do I lock tight the center screw?or use washers shimming the outer part of wheel, allowing it to be tightened?If left loss would the screw fall out an wheel come off.Instructions for seller would explain this.This being my First bot Better instruction would have helped.I was disappointed in sellers response to question about motor shaft Diameter.I was told to look at pictures for answer. I do not see the answer in pictures.Seller deleted my question, Why??Over All Solid bot, I can see a lot of uses for thisGood Value for cost.Would recommend

Exellent quality and the motors are powerfully. Very good deal

The media could not be loaded.  Went together very easily! Motors run nicely at 12v. Some adjustment to the number of links to get the tracks tight enough. But otherwise it was exactly what I needed for my ground surveillance drone.

For the amount, not bad. Had some pretty big issues though that made it more difficult to assemble. The first thing was the poorly written instructions, however they are not impossible to figure out. Another issue was the wheels not lining up and you have to loosen the screws that hold the drive wheels on in order to slide them out further to line up with the free spinning wheels. The biggest issue I had which was also a dangerous one was when placed in correctly the battery holder will short out the two 18650 batteries which could cause them to burst into flames.

This product is horrible it have so much issues and flaws in it design which make the gears move of balance and force the belt to get stock all the time I tried everything but it won't work, good material equality but poor design and use of gear mechanism