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  • Ocracoke's Avatar
    Today, 01:53
    I am sure it was powered by a IC engine in Battlebots Season 5.0 - http://battlebots.wikia.com/wiki/Warhead
    1 replies | 39 view(s)
  • Ocracoke's Avatar
    Today, 01:28
    Ocracoke replied to a thread First bot advice in General Chat
    Hey there, welcome to the forum! In a basic 2WD rammer, you'll need something in the order of: 2x motors (something with gearboxes, I can highly recommend Gimson motors for this) 2x...
    1 replies | 21 view(s)
  • MrCawdell's Avatar
    Today, 01:19
    Hey everyone, been poking my nose around the forum for a few weeks now and figured it was about time i decided to try and build my own bot. my names danny and i have no experience whatsoever...
    1 replies | 21 view(s)
  • Thekinky1's Avatar
    Yesterday, 20:29
    Hi everyone. After many month of procrastination and start stop building I've decided to make a build thread so that I'll get my robot finished soon. After months of designing, binning and some...
    1 replies | 39 view(s)
  • katch's Avatar
    Yesterday, 19:23
    Very inventive use of bar bell matey ... THE WHOLE PROJECT LOOKS FUN !!!
    90 replies | 18530 view(s)
  • team death's Avatar
    Yesterday, 18:30
    Wintery weather Today but the build must go on- unfortunatley due to the bad weather Adam was unavailable this week. I had planned to use most of today on the electrical side of things but due to...
    90 replies | 18530 view(s)
  • d.tec's Avatar
    Yesterday, 18:24
    d.tec replied to a thread How to make an antweight in Antweights
    Hi Thanks so much for this post! However the URL in your kit list have become foreshortened and no longer work - any chance you could send me a working list? Many thanks! enzo d.tec@fablab.blog
    42 replies | 26839 view(s)
  • Retroman's Avatar
    Yesterday, 17:19
    Retroman replied to a thread Project: Pushover in Featherweights
    Thanks for the reply! Yeah, is be surprises myself if it hasn't been done before, was hoping for a little first hand experience of I'm honest, I'll see what I can cobble up and if it works ...
    2 replies | 91 view(s)
  • Ocracoke's Avatar
    Yesterday, 14:58
    Ocracoke replied to a thread Project: Pushover in Featherweights
    Hey there, welcome to the forum! I'd be surprised if dual circuits haven't been tried before but I can't be certain for a Featherweight. MDPE should be OK but the lighter density might be...
    2 replies | 91 view(s)
  • Retroman's Avatar
    Yesterday, 12:49
    Hi guys, new member but long time lurker, getting ready for my first build and a few questions to help me finalise everything... Firstly, has anyone had any success with MDPE as armour sections? I...
    2 replies | 91 view(s)
  • tweedermeister's Avatar
    Yesterday, 12:02
    Sold pending payment.
    1 replies | 163 view(s)
  • Ocracoke's Avatar
    20th January 2018, 23:34
    The drive motors you have look to a little bigger than the ones in Shu!, they weigh 72g each (https://www.technobotsonline.com/918d15112-1-re-280-1-4mm-metal-geared-motor-15-1.html). The weapon...
    31 replies | 2669 view(s)
  • Deathly Hallows's Avatar
    20th January 2018, 23:17
    Cut out the second wheel slot today. Garage was freezing but made good progress none the less. Drilled some fix holes in the base for the weapon motor. Then I laid up some parts to...
    31 replies | 2669 view(s)
  • Team Helix's Avatar
    20th January 2018, 17:16
    Thanks also
    4 replies | 283 view(s)
  • Noisy's Avatar
    20th January 2018, 11:08
    Apologies, been a while since i updated this thread. Went for the Ender 2 and it was delivered just before Christmas. Build process was quite easy. It comes as a kit but most of the parts are already...
    9 replies | 693 view(s)
  • Triceratop's Avatar
    19th January 2018, 19:10
    Hi Tom, my robot is a flip over type, I have positioned my removable link in the rear which means it is accessible which ever way up it is. As for access I have used a 2" nominal bore sched 40 pipe...
    4 replies | 283 view(s)
  • Ocracoke's Avatar
    19th January 2018, 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 | 5745 view(s)
  • Team Helix's Avatar
    18th January 2018, 21:20
    Thanks for that
    4 replies | 283 view(s)
  • T00TY_FRU1TY's Avatar
    18th January 2018, 20:55
    Most of those Chinese motors are t8f sprockets 8mm so use #40 chain
    55 replies | 1865 view(s)
  • Garfie489's Avatar
    18th January 2018, 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...
    4 replies | 283 view(s)
  • Team Helix's Avatar
    18th January 2018, 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...
    4 replies | 283 view(s)
  • team death's Avatar
    18th January 2018, 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 | 1865 view(s)
  • T00TY_FRU1TY's Avatar
    18th January 2018, 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 | 1865 view(s)
  • maddox10's Avatar
    18th January 2018, 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 | 1865 view(s)
  • typhoon_driver's Avatar
    18th January 2018, 15:21
    I wouldn't consider brushless until you are a robot or two into the hobby.
    55 replies | 1865 view(s)
  • T00TY_FRU1TY's Avatar
    18th January 2018, 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 | 1865 view(s)
  • tweedermeister's Avatar
    18th January 2018, 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.
    1 replies | 163 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 | 1865 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 | 1865 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 | 1865 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 | 1865 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 | 1865 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 | 1865 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 | 1865 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 | 1865 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 | 5745 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 | 1021 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 | 1021 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 | 5745 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 | 1021 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 | 1865 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 | 5745 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 | 1865 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 | 1865 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 | 1865 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 | 1865 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 | 1865 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 | 1865 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 | 1865 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 | 1865 view(s)
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