TH Tracked Tank Car Chassis

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!

Everything went together fairly well and the motors worked. They included spare screws and nuts, and that's really appreciated. I did lose one of the screws that hold on one of the sprocket wheels, but since I had an extra I was saved! I suggest anyone building this use some blue(medium) locktight on those screws. Some very minor complaints: * Wires on the motors are super thin. Like, 26awg? They do work and haven't melted yet. * Motor wires were the same color. There is a small marking on each motor so I was able to figure it out. * The wrench/screw driver were low-quality, but that's fine - they were "free" * They didn't include a tool for the small bolts. * I needed to bend a few of the metal parts to make it all fit. Some notes on my project: - Raspberry Pi Zero W - L298N Motor Drive Controller - 12v lipo battery pack

Very pretty body, points for the colors. No independent dynamic spring suspension on the wheels, they're hooked directly to the chassis. It means this guy should be used for indoor purposes only--school gymnasium, etc--as the ride is going to be quite rigid (bumpy) going over rocks and variable terrain. Could be improved by putting spring suspension on each of the wheels.

Opened it up to inventory part list and immediately noticed the missing Motor Board. A screw or two?..understandable. But 1 of the 7 largest and easily distinguished pieces...

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!

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.

The kit is perfect, and the texture of the aluminum alloy is amazing. Parts of the frame are wrapped in plastic film for protection, and the quality is very good. The assembly is also easy, I combined the instructions and the assembly video, and it can be done in about 30-45 minutes, the kit also includes many spare screws and nuts. A really good bang for the buck...

I’ve purchased two of these chassis now and both have had issues driving. The tracks appear to be too tight, making it difficult for the motors to turn. One track on the first chassis is loose enough and treads well. On the newer chassis, both tracks are too tight to move smoothly.

Sturdy base, but had an issue with the tracks at first. Customer service were very helpful and polite. Was able to get the issue sorted quickly and it drives like a charm.

No instruction, the big top piece, two types, a few more items were not there. It is very disappointed as it was a Xmas gift for my child.

Great, robust and still lightweight kit. Lots of mounting holes and I built a custom robot with it. I drive both engines at full 12 Volts and they have lots of speed and torque.

Il GEEK Robot Smart Car Chassis arriva smontato con istruzioni piuttosto scarne. Si capisce molto bene come assemblare le ruote, un po' meno bene come costruire le ruote dentate che trascinano i cingoli, poi per l'assemblaggio del resto dello chassis occorre andare a vedere le foto su web, ma non è un grosso problema, i pezzi sono pochi e si fa in fretta a chiudere tutto. Vorrei dare qualche raccomandazione. Conviene lubrificare il mozzo delle ruote. Non ho capito se ci sono dei cuscinetti, comunque quando si serrano le viti le ruote girano poco. Ho dato un goccio (ma proprio un goccio) di WD40 e poi le ruote giravano benissimo. Non va ovviamente dato sulle ruote dentate. Per quanto riguarda le ruote dentate, su una si mettono i distanziatori in ottone e l'altra ruota dentata va bloccata sui distanziatori: ci sono tre posizioni relative tra le ruote dentate e una sola è quella su cui si allineano i denti, sebbene apparentemente tutte e tre le posizioni potrebbero sembrare equivalenti. Occorre fare attenzione, altrimenti le due dentature della ruota restano sfasate e non prendono bene il cingolo che dunque gira male e il tank non è controllabile. Infine, relativamente alle ruote non dentate, quella in alto va serrata per ultima, dopo aver montato il cingolo e controllato che le ruote dentate lo trascinano bene. Per il resto, il tank offre tanto spazio e tanti buchi per montarci sopra qualsiasi cosa. Nel complesso raccomandato.

Das Fahrwerk ist billigst produziert worden. Mir fehlen unter anderem Einsenkungen für Schraubenköpfe, diesen Produktionsschritt hätte man durchaus noch mitmachen können. Laufrollen haben viel Spiel. Chinesischer Grußaufdruck auf den Laufrollen. Die Kette hat auf glatten Oberflächen einen sehr niedrigen Grip. Erhöhe grade systematisch das Konstruktionsgewicht, damit das keine Rutschpartie später wird. Für den Preis finde ich das schlechte Qualität.