SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-28T23:45:42-06:00SparkFun ElectronicsCustomer #1352825 on ROB-12719 - T'Rex Tank ChassisCustomer #1352825urn:uuid:04e01a97-ff24-be8a-b6e6-bb981957621e2018-04-13T17:06:04-06:00<p>Probably a stupid question but.. do you think a Romeo V2 Board would run the motors?</p>
Customer #1114068 on ROB-12719 - T'Rex Tank ChassisCustomer #1114068urn:uuid:90360436-88e7-a65b-8720-af1c8e99e9a12017-08-28T12:39:06-06:00<p>The gears are said to be full metal, but when i zoom in on the picture they appear to by plastic...
Could someone answer this for me??
thanks!</p>
bboyho on ROB-12719 - T'Rex Tank Chassisbboyhourn:uuid:f0936c05-4834-9703-4a70-579bbe57572f2016-08-30T10:58:50-06:00<p><strong>-------------------- Tech Support Tips/Troubleshooting/Common Issues --------------------</strong><p><strong>Monster Moto Shield</strong></p><p>After testing it with the Monster Moto Shield, the current pull was about ~2.73A to ~3.89A depending on how hard I was running the motors with a benchtop power supply. The motors were running for 5 seconds forward and backwards. The benchtop power supply would spike to ~3.8A briefly when the motors changed direction. Make sure that you have an RC LiPo battery or a power supply that is able to output a lot of power. The motor driver appeared to stay cool after the tests.</p></p>
krazcy_ivan on ROB-12719 - T'Rex Tank Chassiskrazcy_ivanurn:uuid:6b4c0db1-8e12-d4c8-e253-6e54135e11762015-01-21T19:12:47-07:00<p>Is there a replacement for the top cover available separately?</p>
Customer #243571 on ROB-12719 - T'Rex Tank ChassisCustomer #243571urn:uuid:f4aff0a0-fc65-9ff1-7287-87bfa4689e792014-11-24T11:58:43-07:00<p>I would love to see a comparison between the T'Rex and the Wild Thumper in different terrain and conditions. For example, I have seen in the product video for the Wild Thumper, it can fairly easily climb up curbs and small steps if approached at an angle. However, I can't seem to find anything on the intarwebs demonstrating such capability for the T'Rex -- and given the substantially different suspension between the two, I am also interested in seeing how these two platforms compare in dealing with rough terrain and obstacles. Any info or videos would be appreciated.</p>
JellyFish on ROB-12719 - T'Rex Tank ChassisJellyFishurn:uuid:a909d7f6-0a29-e511-e035-f16fbc8ae1022014-11-22T05:33:57-07:00<p>Could this climb stairs? Working on a rover-type project.</p>
dpitchfo on ROB-12719 - T'Rex Tank Chassisdpitchfourn:uuid:aabb3c3e-e4f0-d2c2-f1dc-7084cf3c920c2014-11-12T17:35:48-07:00<p>Try:
http://www.tankzone.co.uk/cart/hl_kt.htm<p>They have alot of parts for RC Tanks.</p></p>
Customer #445152 on ROB-12719 - T'Rex Tank ChassisCustomer #445152urn:uuid:d8622148-277c-e701-1606-c6c68af26d072014-10-23T07:49:13-06:00<p>Anyone know of a source for replacing just the brass bushings in the gearboxes, or a suitable replacement bearing? Mine have completely worn out in just a few hours of running after upgrading to the steel gears bought off Ebay (“HENG LONG tank gearbox” on ebay).</p>
OddBot on ROB-12719 - T'Rex Tank ChassisOddBoturn:uuid:5fc64aec-7eef-1bb5-c990-05ff1a5564832014-08-14T22:18:39-06:00<p>It depends on the terrain and the payload. The T'REX tank, like all tracked vehicles can throw a track under some circumstances but has better traction in sand, snow and mud.<p>The T'REX depends on the spring tension of the suspension to keep the tracks tight but excessive payloads will cause the springs to compress. It was originally designed to have a 3S LiPo, The T'REX controller and a Raspberry Pi inside with a pan/tilt and camera up top.</p><p>The Wild Thumper can carry bigger / heavier payloads and never throw a track but it is more likely to get bogged in sand, snow or mud.</p></p>
RobertC. on ROB-12719 - T'Rex Tank ChassisRobertC.urn:uuid:06dab9ae-55b3-6eb8-dc12-757f476027682014-08-07T16:09:35-06:00<p>they're different. I' d take the thumper for various terrains, but I'd take the t'rex for ruggedness. it's more sealed up. each has their purposes.</p>
Customer #429971 on ROB-12719 - T'Rex Tank ChassisCustomer #429971urn:uuid:f4926b8b-8c3f-6ffd-bb43-c1f40af1d9342014-08-07T14:06:31-06:00<p>Does the T'Rex beat the Wild Thumper 6WD in traversing obstacles?</p>
Spinerex on ROB-12719 - T'Rex Tank ChassisSpinerexurn:uuid:ea73e0e0-3911-00bb-22af-512d961ac2fa2014-07-17T12:31:57-06:00<p>What is the gauge of the wires coming from the two motors?</p>
Spinerex on ROB-12719 - T'Rex Tank ChassisSpinerexurn:uuid:f467586f-4f0e-b010-83a8-696d4d8c7a532014-07-16T20:23:50-06:00<p>What happened to the estimate of July 19th?</p>
Circuitsoft on ROB-12719 - T'Rex Tank ChassisCircuitsofturn:uuid:801b2bd2-0b93-00f8-f43c-3be44b7afbed2014-06-16T08:33:16-06:00<p>Zinc, by itself, is very corrosion resistant. When you put a zinc plate on a boat, it acts as a battery, and induces current flow through the water that prevents oxygen ions from bonding with the hull, forcing them to bond with the zinc plate instead. The remaining hydrogen ions don't damage the iron hull of the boat.</p>
Customer #563632 on ROB-12719 - T'Rex Tank ChassisCustomer #563632urn:uuid:56eb301a-2d1d-111d-b9f6-d1acf45ccd0f2014-06-16T01:11:09-06:00<p>The tracks, idler wheels, and toothed sprocket are all from Tamiya's 1/16th scale German Tiger 1 RC/model tank. So yes, you can buy plastic tracks for it. Try www.tankzone.co.uk.</p>
OddBot on ROB-12719 - T'Rex Tank ChassisOddBoturn:uuid:0b8b1315-0962-f1d0-d5a0-c85ffc335c032014-05-31T07:33:52-06:00<p>With the prototype I used a 5000mAh 3S Lipo. It all depends on what kind of run time you want between charges.</p>
OddBot on ROB-12719 - T'Rex Tank ChassisOddBoturn:uuid:322c5208-38a0-f68f-f3db-e1af5d6cc92c2014-05-31T07:31:39-06:00<p>As the kit comes, maybe half a kilo. Adding additional springs to the suspension will allow heavier payloads.</p>
53RG10 on ROB-12719 - T'Rex Tank Chassis53RG10urn:uuid:fa8b9b5e-0292-dcb2-4ff8-a81ae5d1e03b2014-05-29T03:54:08-06:00<p>Why does it cost almost the double on dagu website?</p>
c.burgess.7 on ROB-12719 - T'Rex Tank Chassisc.burgess.7urn:uuid:f5dc892d-69b2-0f53-5e82-465d7082f67b2014-05-26T13:29:05-06:00<p>http://www.amazon.com/Venom-10000mAh-Battery-Universal-2-Pack/dp/B00FE0RVR6/ref=sr_1_148?s=toys-and-games&ie=UTF8&qid=1401132524&sr=1-148</p>
richkappler on ROB-12719 - T'Rex Tank Chassisrichkapplerurn:uuid:2abce676-92d9-ae7e-0c05-f01db6b32edd2014-05-23T13:30:55-06:00<p>What kind of payload will this handle?</p>
BoWingo on ROB-12719 - T'Rex Tank ChassisBoWingourn:uuid:a77cd90c-d129-fca9-9729-3d85e4afae412014-05-23T13:25:28-06:00<p>It's shown in the user manual, but it should probably be noted in the product description as well, that the 175mm dimension is for the width of the body, not including the tracks. With the tracks included, the overall width of the chassis is 265mm (10.4").</p>
CraigTheCoder on ROB-12719 - T'Rex Tank ChassisCraigTheCoderurn:uuid:cca0570f-23bb-bde2-313d-7b6f3d93809e2014-05-21T14:11:13-06:00<p>What are some recommended batteries (Sparkfun or otherwise) to use with this chassis and the latest T'Rex controller? Also, any suggestions for a simple RC receiver board to use with said configuration just to get some basic functionality up and running?</p>
OddBot on ROB-12719 - T'Rex Tank ChassisOddBoturn:uuid:fc86708b-2ace-ba8f-ee0f-5a6e3866cf4d2014-05-20T17:39:06-06:00<p>The gearbox is easily disassembled and it is fairly easy to add either optical or magnetic encoders to the gears.</p>
OddBot on ROB-12719 - T'Rex Tank ChassisOddBoturn:uuid:52254255-7fca-8f77-5f10-33cd172127922014-05-20T17:35:35-06:00<p>The body is not water proof. To begin with there are holes for the drive shafts to poke through so you should mount your electronics in a sealed plastic bag or waterproof housing if you want it to go in water.<p>The chassis is all aluminium, zinc or brass so it has high corrosion resistance. Only things like screws and springs are steel but they are nickle plated. As long as you waterproof your electronics then you can just use a hose to wash it and then add some dry lubricant once it's dry.</p><p>You can see the prototype videos here: https://www.youtube.com/watch?v=Qyzs-LxoyzQ</p></p>
D_C on ROB-12719 - T'Rex Tank ChassisD_Curn:uuid:fbe644ad-be97-beff-7850-6a0d8f094de32014-05-19T17:37:32-06:00<p>The top doesn't appear to be, but how water resistant is this? At least if the bottom half is submerged in water?</p>
Customer #502457 on ROB-12719 - T'Rex Tank ChassisCustomer #502457urn:uuid:8e0448e7-0a1e-974c-2275-29e04f32ecee2014-05-19T06:58:41-06:00<p>I could use some clarification on the zinc wheels. On boats we use zinc to prevent corrosion because the zinc corrodes more easily than the other metals. What is it about the zinc that makes it good for corrsion resistance?</p>
ShapeShifter on ROB-12719 - T'Rex Tank ChassisShapeShifterurn:uuid:523ac518-fb29-f099-d01a-21d7d80111b82014-05-17T06:01:19-06:00<p>Galvanized steel has the zinc coating you're thinking of, where the zinc is either electroplated, or the steel is dipped in molten zinc. Anodizing is a process usually done to aluminum which creates a corrosion resistant hard smooth oxide layer. Besides aluminum, it can be done to several other metals, including zinc.</p>
Customer #518130 on ROB-12719 - T'Rex Tank ChassisCustomer #518130urn:uuid:0a1b58ed-13ed-c4b2-6059-774cefaab4b62014-05-17T03:40:57-06:00<p>Much as I hate to ask this of such a perfect product: is there some soft plastic treads I could buy for this to make it less loud and not damage the floors? Some of us have wives... :)</p>
OddBot on ROB-12719 - T'Rex Tank ChassisOddBoturn:uuid:8b7b9af7-911b-9ad6-6afc-89c2e3e95e382014-05-16T18:58:56-06:00<p>Yes the tracks are cast zinc but an anodizing process is used to color the tracks and give them a shiny finish.</p>
Nathaniel D on ROB-12719 - T'Rex Tank ChassisNathaniel Durn:uuid:171e3434-cec2-8a74-4eda-afdb2237e1762014-05-16T16:28:30-06:00<p>Found it! Thanks a bunch!</p>
wanao on ROB-12719 - T'Rex Tank Chassiswanaourn:uuid:fa9dd170-18f6-87ea-f2de-7be13a5dcd072014-05-16T13:48:34-06:00<p>search for "HENG LONG tank gearbox" on ebay or aliexpress and that's the gearbox you need. the motors are brushed w/ 2mm shaft. The pinion gear are 48p 10T. I recommend upgrade the gearbox to steel gear as the alloy gear will worn out pretty fast.</p>
Customer #353680 on ROB-12719 - T'Rex Tank ChassisCustomer #353680urn:uuid:d6fe1455-4179-6dca-8b79-ae3800c716f62014-05-16T11:33:50-06:00<p>Actually anodize is usually found in aluminum. You will find the tracks are cast zinc, lower melting point for casting and not as problem prone as aluminum.</p>
Customer #353680 on ROB-12719 - T'Rex Tank ChassisCustomer #353680urn:uuid:d9f30bea-b0b1-632b-d3ce-7fbf59bffcbf2014-05-16T11:24:23-06:00<p>Actually anodize is usually found in aluminum. You will find the tracks are cast zinc, lower melting point for casting and not as problem prone as aluminum.Enter a reply...</p>
Customer #353680 on ROB-12719 - T'Rex Tank ChassisCustomer #353680urn:uuid:c726ae43-33f5-092e-a2de-7f8af93a10902014-05-16T11:20:54-06:00<p>Actually anodize is usually found in aluminum. You will find the tracks are cast zinc, lower melting point for casting and not as problem prone as aluminum.</p>
khearn on ROB-12719 - T'Rex Tank Chassiskhearnurn:uuid:0b2d17c3-17be-ca27-3656-c6025e0f0de92014-05-16T11:12:42-06:00<p>I'm not clear on what exactly "anodized zinc" is. Usually when one sees "anodized", it means it's mainly steel with a zinc plating applied by a process known as anodization. Is that what this is, or is it zinc with some other metal anodized onto it?</p>
Nathaniel D on ROB-12719 - T'Rex Tank ChassisNathaniel Durn:uuid:f7ced1bb-fd50-3ebc-ad8f-ced13449d38b2014-05-16T11:01:45-06:00<p>I've had no luck finding a matching motor or gearbox on their website.</p>
Lion XL on ROB-12719 - T'Rex Tank ChassisLion XLurn:uuid:cf1b178c-d485-5077-dbb2-29278eef47a82014-05-16T10:28:38-06:00<p>They have the same motors and such on their website.</p>
dbc on ROB-12719 - T'Rex Tank Chassisdbcurn:uuid:b54ee858-9261-3687-aa11-e16f429e9e672014-05-16T10:21:39-06:00<p>Any way to attach encoders to the motors? Doesn't look like the motors have tail shafts.</p>
Nathaniel D on ROB-12719 - T'Rex Tank ChassisNathaniel Durn:uuid:77a422a4-5ba9-fee6-6b16-645d8210f5e92014-05-16T10:15:50-06:00<p>Is it at all possible to purchase the motor/gearbox combo separately? Or does anyone know what motors this tank uses?</p>
Milzee on ROB-12719 - T'Rex Tank ChassisMilzeeurn:uuid:23aba428-0f3b-f6e3-f74c-4a7ce7921ca02014-05-16T10:07:13-06:00<p>https://www.youtube.com/watch?v=-w-58hQ9dLk</p>
LED addict on ROB-12719 - T'Rex Tank ChassisLED addicturn:uuid:bfb90eb1-2c2d-64ec-61ca-59b65e45b53c2014-05-16T10:06:28-06:00<p>Best demo ever!</p>
Customer #403458 on ROB-12719 - T'Rex Tank ChassisCustomer #403458urn:uuid:ba64823b-70a7-d5c6-828e-c77b99a545d72014-05-16T10:01:50-06:00<p>Any chance of offering just the tracks?</p>
PostmasterSteve on ROB-12719 - T'Rex Tank ChassisPostmasterSteveurn:uuid:33984995-2bf6-ddeb-cde2-b9104acf15052014-05-16T09:50:30-06:00<p>$2499.50 later: "They're moving in herds ... they <em>do</em> move in herds..."
<a href="http://youtu.be/GIO7BvibNXw" rel="nofollow">Spared no expense</a> ! :)</p>
JD Roy on ROB-12719 - T'Rex Tank ChassisJD Royurn:uuid:59aa0828-7dc7-c256-3511-c8ab7993093f2014-05-16T09:39:21-06:00<p>Now to add <a href="http://m.instructables.com/id/Nerf-Vulcan-Sentry-Gun/" rel="nofollow">this</a>... And I'll have sentry bots for my villain lair!</p>
lpgatlin42 on ROB-12719 - T'Rex Tank Chassislpgatlin42urn:uuid:ed6ffbe0-55ee-75c8-dd0a-8cf207891aa72014-05-16T07:58:55-06:00<p>okay, I will say it. This is wicked!</p>