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  • Ocracoke's Avatar
    Today, 00:07
    Ocracoke replied to a thread Team Kaizen - Shu! in Build Diaries
    Hahaha! I will err on the side of caution on that one. :D I've fitted a set of longer forks on the front and I've got a even longer set from building Osu cut out but in reality, this is it before...
    49 replies | 5589 view(s)
  • Team Helix's Avatar
    Yesterday, 21:20
    Thanks for that
    2 replies | 103 view(s)
  • T00TY_FRU1TY's Avatar
    Yesterday, 20:55
    Most of those Chinese motors are t8f sprockets 8mm so use #40 chain
    55 replies | 1613 view(s)
  • Garfie489's Avatar
    Yesterday, 18:36
    The link needs to be accessible by hand without tools. This means a panel can be held in place by wingnut which is only just large enough to allow the link to pass through. In practice you...
    2 replies | 103 view(s)
  • Team Helix's Avatar
    Yesterday, 18:32
    Hi all, i have a question that may seem silly but i do not seem to be able to find the answer. The removable link needs to be accessable from both sides, but can it be put behind a panel. If so what...
    2 replies | 103 view(s)
  • team death's Avatar
    Yesterday, 17:43
    Looking at those motors, brushless or not, I wouldent be keen on them purely because of the size of the drive sprocket at the end-it looks like its rigged for 6mm chain or less and could be a true...
    55 replies | 1613 view(s)
  • T00TY_FRU1TY's Avatar
    Yesterday, 16:10
    I noticed Ellis had major reliability issues using brushless in series 9. If he had trouble I'm definitely staying clear anyways.
    55 replies | 1613 view(s)
  • maddox10's Avatar
    Yesterday, 15:56
    maddox10 replied to a thread ESC recommendations in Heavyweights
    Depends on weightclass. But brushless drives are finicky beasts. Gearratio is much more important than with brushed motors. In our raptor we use SimonK programmed Afro 30's for drive. Drive...
    55 replies | 1613 view(s)
  • typhoon_driver's Avatar
    Yesterday, 15:21
    I wouldn't consider brushless until you are a robot or two into the hobby.
    55 replies | 1613 view(s)
  • T00TY_FRU1TY's Avatar
    Yesterday, 15:19
    Out of curiosity are there any brushless ESC that are commonly used or are they all custom? Again all I can find are scooter or hobby controllers.I have my brushed motors already and have no...
    55 replies | 1613 view(s)
  • tweedermeister's Avatar
    Yesterday, 13:38
    Got a couple of s900's with gearboxes and wheels for sale, I bought these a while ago but haven't found a use for them and need to free up some funds ASAP. Open to offers on them.
    0 replies | 64 view(s)
  • maddox10's Avatar
    17th January 2018, 22:11
    maddox10 replied to a thread ESC recommendations in Heavyweights
    The fans on the Vyper (and Victors ) still are vurnable. Some of the ESC's have them to boost performance further (increased running time with heavy loads), others just use them as a pure...
    55 replies | 1613 view(s)
  • katch's Avatar
    17th January 2018, 22:07
    katch replied to a thread ESC recommendations in Heavyweights
    48v was tried esc was fine but motors didn' like it... I'll try my lipo when they arrive
    55 replies | 1613 view(s)
  • Ocracoke's Avatar
    17th January 2018, 21:48
    Ocracoke replied to a thread ESC recommendations in Heavyweights
    I am sure Foxic uses them when I last saw the robot, so definitely in the UK at the very least.
    55 replies | 1613 view(s)
  • team death's Avatar
    17th January 2018, 19:53
    Thank's for the info on the vyper Mark, but it's still a fan cooler so I assume it's vunerable to Combat impacts. I have just noticed your location down in somerset there Team Katch (member...
    55 replies | 1613 view(s)
  • Maxamuslead's Avatar
    17th January 2018, 19:40
    The Vyper uses a actual heatsink where the Cytron just blows onto the mosfets. I also believe the Vyper has bean used in combat bots both into the US and UK. (I might incorrect on this)
    55 replies | 1613 view(s)
  • katch's Avatar
    17th January 2018, 18:22
    katch replied to a thread ESC recommendations in Heavyweights
    I think they have enough experience to be openly concerned for other builders. Who have not yet put up cash.. I on the other hand already spent the cash so I do need to overcome the potential...
    55 replies | 1613 view(s)
  • team death's Avatar
    17th January 2018, 17:58
    It's interesting that experienced Roboteers are against fan cooled ESC's and there are more expensive fan cooled ESC's on the market uk/vyper-120a-dc-motor-controller.html at £200 + so I guess they...
    55 replies | 1613 view(s)
  • maddox10's Avatar
    17th January 2018, 17:07
    maddox10 replied to a thread ESC recommendations in Heavyweights
    Depends on surface area and total mass. Color and material are also nice to know. For our application black anodised aluminium is the best option. ...
    55 replies | 1613 view(s)
  • Scottie's Avatar
    17th January 2018, 15:32
    Scottie replied to a thread Team Kaizen - Shu! in Build Diaries
    If it is ok to use then the pressure is off! id be interested to measure some signals on your sabretooth with an oscilloscope. As for antispinners i hope you make something like when complete...
    49 replies | 5589 view(s)
  • Ocracoke's Avatar
    17th January 2018, 15:25
    Sweet mercy that looks impregnable. If there is any sideways movement, move the batteries a little closer to the centre, drill 2x M3 bolt holes, one either side of where the battery is going...
    13 replies | 978 view(s)
  • Scottie's Avatar
    17th January 2018, 15:18
    Here is the latest installment of Erics saga. I first tapped and screwed together my diy pulley attached to the blades. these are 6 holes for m3 screws. all the teeth are more or less aligned and...
    13 replies | 978 view(s)
  • Ocracoke's Avatar
    17th January 2018, 14:58
    Ocracoke replied to a thread Team Kaizen - Shu! in Build Diaries
    I tried changing the trims and using the RC control from The Honey Badger which doesn't have this issue but the twitch persists. I've spoken to Garfie489 about this and he is OK with it so I guess I...
    49 replies | 5589 view(s)
  • Scottie's Avatar
    17th January 2018, 14:50
    Hey there! I have attached the metal mounts to the base by drilling and tapping directly into the metal, shown below. Unfortunately i have had to drill and tap by hand, and i have the finesse of...
    13 replies | 978 view(s)
  • T00TY_FRU1TY's Avatar
    17th January 2018, 14:48
    How big a heat sink would be needed to replace 80mm fans?
    55 replies | 1613 view(s)
  • Scottie's Avatar
    17th January 2018, 14:42
    Scottie replied to a thread Team Kaizen - Shu! in Build Diaries
    Shu! look great bro! im looking forward to seeing it in real life. As to that twitching thing, it could possibly be a calibration issue. it might be that your remote is just on the edge of the...
    49 replies | 5589 view(s)
  • maddox10's Avatar
    17th January 2018, 14:15
    maddox10 replied to a thread ESC recommendations in Heavyweights
    Passive cooling is better than fans. But if you add a heatsink, look it at the other way around. Add the ESC to the heatsink.
    55 replies | 1613 view(s)
  • Ocracoke's Avatar
    17th January 2018, 14:02
    Ocracoke replied to a thread ESC recommendations in Heavyweights
    Worth getting the controller, removing the top cover (seems to be held on with motherboard standoff screws), getting a passive CPU cooler and some thermal paste and putting that on the ESC? You could...
    55 replies | 1613 view(s)
  • typhoon_driver's Avatar
    17th January 2018, 14:02
    If a fan experiences a shock of 500G (not unrealistic) it will fail. Go ask a fan manufacturer what shock load they will guarantee it to. Chances are they will say "none". A knock, dropping a...
    55 replies | 1613 view(s)
  • maddox10's Avatar
    17th January 2018, 13:57
    maddox10 replied to a thread ESC recommendations in Heavyweights
    Have a go with fans. Please tell us the results. I personaly won't use a fan in a robot wars machine. Tried it a few times, failed miserably. Even with extensive shock mounting. Had even...
    55 replies | 1613 view(s)
  • T00TY_FRU1TY's Avatar
    17th January 2018, 13:50
    I have seen the robot claws similar spec and price (36v so no overvolting), the can bridge the motor terminals if more current needed. No moving parts
    55 replies | 1613 view(s)
  • katch's Avatar
    17th January 2018, 13:46
    katch replied to a thread ESC recommendations in Heavyweights
    I can see its a valid point, but i've never actually seen a pc fan fail because it was knocked, but there are alternative fan designs. As i already have 2 of these cryton units its a good...
    55 replies | 1613 view(s)
  • maddox10's Avatar
    17th January 2018, 13:44
    maddox10 replied to a thread ESC recommendations in Heavyweights
    Fans in robotwars belong in the stands, not in the machines. Tried that. From the cheapest recycled computer fans, to the most sturdy industrial versions Pabst could deliver. Shocks like our...
    55 replies | 1613 view(s)
  • typhoon_driver's Avatar
    17th January 2018, 13:32
    "If thats the case then secondary fans maybe necessary to protect it, but they are only 50p " Those fans will also likely be nackered in the first hit from a heavyweight. I'm not saying this to...
    55 replies | 1613 view(s)
  • maddox10's Avatar
    17th January 2018, 12:50
    :) Looks promising.
    3 replies | 86 view(s)
  • T00TY_FRU1TY's Avatar
    17th January 2018, 11:32
    I will once I have sourced all my remaining parts. I'm with you on brushless but seems to complex to work with and a limited number is ESC choice. Besides brushless motors are plentiful and...
    55 replies | 1613 view(s)
  • katch's Avatar
    17th January 2018, 10:53
    katch replied to a thread ESC recommendations in Heavyweights
    have you got a thread running ? i have one title NEW HEAVY but i need to be less lazy and get more up.
    55 replies | 1613 view(s)
  • katch's Avatar
    17th January 2018, 10:50
    katch replied to a thread ESC recommendations in Heavyweights
    If thats the case then secondary fans maybe necessary to protect it, but they are only 50p
    55 replies | 1613 view(s)
  • Maxamuslead's Avatar
    17th January 2018, 10:43
    the problem with that esc is that in a combat situation the fans will very likely get damaged and as Gary stated that, that ESC needs those fans to be able to deliver those rated amps, without fans i...
    55 replies | 1613 view(s)
  • Danjr1's Avatar
    17th January 2018, 10:43
    Cool! PM sent.
    3 replies | 86 view(s)
  • T00TY_FRU1TY's Avatar
    17th January 2018, 10:34
    Awesome katch sounds like a similar drive setup to my design. I can't wait to see your build. I'm planning to start after Easter.
    55 replies | 1613 view(s)
  • katch's Avatar
    17th January 2018, 10:10
    katch replied to a thread ESC recommendations in Heavyweights
    That Cytron is what i have 2 off as - photo'd above. I was talking to a friend who uses it to push his cesna plane around with a radio control battery power unit and thats why i bought it because it...
    55 replies | 1613 view(s)
  • typhoon_driver's Avatar
    17th January 2018, 09:34
    An esc that relies on fans to run is a very bad idea in combat robots. Fans just can't hold up to the abuse.
    55 replies | 1613 view(s)
  • Bad Wolf's Avatar
    17th January 2018, 08:57
    Great stuff! I should be there! Hopefully ill have something to bring with me too! :) Bad Wolf
    10 replies | 533 view(s)
  • maddox10's Avatar
    17th January 2018, 05:39
    I'm not even near you; but I want to test out my mobile welding shop later this month. Maybe we can strike a deal?
    3 replies | 86 view(s)
  • Theo's Avatar
    16th January 2018, 23:58
    Theo replied to a thread ESC recommendations in Heavyweights
    https://www.robotshop.com/uk/cytron-smartdriveduo-smart-dual-channel-60a-motor-driver.html They have a peak of 100A and are pretty cheap for heavy ESCs.
    55 replies | 1613 view(s)
  • Maxamuslead's Avatar
    16th January 2018, 22:15
    Quick update, work colleague got a 3d printer "for his kid" and offered to print us a new battery box. It is only 4mm PLA, so it isn't the strongest thing in the world, but I have heard that...
    56 replies | 9746 view(s)
  • team death's Avatar
    16th January 2018, 21:35
    Do you have a link or picture of the speed controller you are using Team Katch and are you using one lipo at 22 volt or 2 in series because those cytron are rated at 45 volt I believe, the tester...
    55 replies | 1613 view(s)
  • katch's Avatar
    16th January 2018, 19:37
    katch replied to a thread ESC recommendations in Heavyweights
    I currently test with 95 kilo loaded and 225mm wheels direct to gearbox shaft if that' any help
    55 replies | 1613 view(s)
  • Ocracoke's Avatar
    16th January 2018, 19:22
    Ocracoke replied to a thread Team Kaizen - Shu! in Build Diaries
    A video of the final result, still with speed controller woes though :S
    49 replies | 5589 view(s)
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