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  • Flag Captured's Avatar
    Yesterday, 22:27
    Both sold
    1 replies | 284 view(s)
  • Flag Captured's Avatar
    Yesterday, 17:33
    Got a few things for sale I'm wanting to shift, PM me offers if prices aren't stated. May take a while to get back to people with me being busy most days now but will try to get back asap SOLD -...
    0 replies | 68 view(s)
  • Flag Captured's Avatar
    Yesterday, 16:06
    Got a pair of Propdrive V2 5060 270KVs for sale, brand new and still in the box. Excellent spinner or drive motors for featherweights. £44 from HK, looking for the same but will do £80+P&P for...
    1 replies | 284 view(s)
  • team death's Avatar
    Yesterday, 15:59
    I don't have a axe weapon but I do have some knowledge of cim motors and ratios. You would never be able to self right with such a ratio of 3:1, I would use a minimum of 8:1 and you will be...
    102 replies | 11212 view(s)
  • Ocracoke's Avatar
    Yesterday, 12:59
    As a general inquiry, what ratio do folks run their axes at these days? For RL Grantham, Azriel will use the same 3:1 setup that Kaizen used last year with the CIM motor which in testing has been...
    102 replies | 11212 view(s)
  • McMullet's Avatar
    17th June 2019, 20:18
    Nice... Looking forward to seeing it finished!
    102 replies | 11212 view(s)
  • Ocracoke's Avatar
    17th June 2019, 20:03
    They are Gimson 13.7:1 motors (https://gimsonrobotics.co.uk/categories/dc-electric-motors/products/gr-ep-45-high-power-45mm-planetary-gearmotor). Coupled with 775 motors, they are a solid, if...
    102 replies | 11212 view(s)
  • McMullet's Avatar
    17th June 2019, 19:54
    Nice going! What's the drivetrain made up of, the motors look like something a bit nicer than drills... More importantly, is it also going to be pink? :D
    102 replies | 11212 view(s)
  • Ocracoke's Avatar
    17th June 2019, 19:46
    Azriel After finding a few moments to concentrate on this one, I've got it rolling. It isn't The Honey Badger quick but it is quite controllable as a result. Thanks to having the wiring loom, motors...
    102 replies | 11212 view(s)
  • McMullet's Avatar
    17th June 2019, 18:25
    Great stuff! Thanks for taking the time to write all this up. I'll have to try gluing some plans onto the raw material in future, hopefully that'll reduce levels of wonkiness a bit! We've been on...
    2 replies | 224 view(s)
  • Roboteernat's Avatar
    17th June 2019, 10:14
    Just wanted to say thank you to the Forum owners for increasing the number of allowed saved messages to 20,000, up from 50, an increase of 39900% Thank you :)
    0 replies | 49 view(s)
  • Shooty's Avatar
    16th June 2019, 23:55
    FOLLOW-UP: This video from Team Saint covers a few extra tips for HDPE cutting. the blade being used here will likely be too big for many cuts necessary, especially at lower weight classes, but the...
    2 replies | 224 view(s)
  • Shooty's Avatar
    16th June 2019, 23:46
    So I've been working fairly non-stop on beetleweights and featherweights for the past two years, and each of my builds have involved robots almost entirely constructed out of HDPE. I have a lot to...
    2 replies | 224 view(s)
  • team death's Avatar
    16th June 2019, 20:24
    If your wheels are plastic you will have to bolt the sprocket on and you will need to be very accurate because any up and down movement due to misalignment or side ways wobble will cause the...
    7 replies | 165 view(s)
  • para1yz3r's Avatar
    16th June 2019, 20:02
    Ok, think I got it mostly sorted now. just one last thing, how would you go about attaching the sprocket to the wheel and can anyone reccomend a good place to get appropriate sprockets?
    7 replies | 165 view(s)
  • team death's Avatar
    16th June 2019, 19:41
    Where possible you should use a single axle for strength and even on my feathers I don't go less a 25mm axle for the simple reason if you get flipped 6 feet in the air-your wheels and thus the...
    7 replies | 165 view(s)
  • para1yz3r's Avatar
    16th June 2019, 19:24
    but wouldnt the wheel rub against whatever part of the robot the bolt is going through and cause friction?
    7 replies | 165 view(s)
  • MattLampitt's Avatar
    16th June 2019, 18:04
    Because the bolt head or a nylock Nut is on the end.. I give it about 1mm
    7 replies | 165 view(s)
  • para1yz3r's Avatar
    16th June 2019, 17:32
    Thx for the answer, but how do you make sure the wheels dont move side to side on the axle?
    7 replies | 165 view(s)
  • MattLampitt's Avatar
    16th June 2019, 17:29
    I use m8 high tensile bolts as my fixed wheel axels for belt drive. It hasn’t let me down. Only time they bent was when it got a direct hit from a spinner. Still considering upping to m10 though.
    7 replies | 165 view(s)
  • HereticBlue's Avatar
    16th June 2019, 15:22
    Sorry for the late update, all of the above are now sold. We have some extra parts to add in here since they were originally used in Bonfire! If you are interested in these or have any questions,...
    3 replies | 636 view(s)
  • Ocracoke's Avatar
    16th June 2019, 15:15
    Jibril So the gearbox sides have been cut and the gears are on the shaft for Jibril but I've yet to make any head way in actually building it. Given the now tight timelines to RL Grantham, I may not...
    102 replies | 11212 view(s)
  • para1yz3r's Avatar
    16th June 2019, 13:11
    Hi, am in the process of laying out a CAD plan for a wip robot and was wondering what the best way to mount the axles for a chain drive system? thanks in advance, Ben
    7 replies | 165 view(s)
  • widow_twanky's Avatar
    16th June 2019, 09:03
    Traditionally I've always used something like Loctite 401 for magnets. I had read people were using epoxy for holding them in on brushless motors. Wondered if there was any reason for this such as...
    4 replies | 284 view(s)
  • maddox10's Avatar
    15th June 2019, 14:34
    The NTM 5060 is a very useable motor. But I tend to "ruggedize" them with glue for the magnets, and epoxy for the cable lead entrance.
    4 replies | 284 view(s)
  • shakesc's Avatar
    15th June 2019, 12:35
    I've used lots of the propdrives, happy with them
    4 replies | 284 view(s)
  • AdamST180's Avatar
    15th June 2019, 09:53
    Big help thanks, i did look but couldnt find it lol
    110 replies | 16564 view(s)
  • Shakey's Avatar
    14th June 2019, 13:22
    If it helps I dug up the F2 data sheet (Still on the store, just tucked away): https://nutsandbots.co.uk/ftds/
    110 replies | 16564 view(s)
  • AdamST180's Avatar
    14th June 2019, 09:18
    Ordered "Electronics for Dummies" so can get into all this again so know what im doing :lol:
    110 replies | 16564 view(s)
  • AdamST180's Avatar
    13th June 2019, 15:22
    Will test with the drill battery i think then as already got that and then once its running can at least then change to lipos, thanks for the help guys, I will get there eventually :lol:
    110 replies | 16564 view(s)
  • Ocracoke's Avatar
    13th June 2019, 13:32
    So the parts for the two stage reduction have arrived and I'll be cutting up the HDPE for both the gearbox and Azriel tonight. It did however strike me that I had forgotten the bearings! Bleh, they...
    102 replies | 11212 view(s)
  • McMullet's Avatar
    13th June 2019, 12:02
    I'd say the drill battery will be fine for testing, but ultimately I would say yeah, just get a lipo and put a fuse in. We use one of these in Ensign Wedgeley Crusher:...
    110 replies | 16564 view(s)
  • AdamST180's Avatar
    13th June 2019, 11:56
    So ignore the drill battery and just get a known lipo and fuse will be better? Dont want to risk frying the ESC as cost a lot lol
    110 replies | 16564 view(s)
  • McMullet's Avatar
    13th June 2019, 11:54
    I think the original Haynes manual just uses one of the batteries, which should be fine for testing that it works and a bit of driving around. The battery itself might have some overcurrent...
    110 replies | 16564 view(s)
  • Scarrosaki's Avatar
    13th June 2019, 11:41
    If you're using the Argos drill batteries and motors, would recommend just running a single battery to start with until you're happy with the wiring before thinking about adding a second battery in...
    110 replies | 16564 view(s)
  • Ocracoke's Avatar
    13th June 2019, 11:14
    You would need to wire it up in series (for increased voltage) or in parallel (for increased capacity) to get power to the ESC.
    110 replies | 16564 view(s)
  • AdamST180's Avatar
    13th June 2019, 11:11
    Sounds good, i can follow that :) does the ESC have inputs for both batteries? Or would i wire them up in series?
    110 replies | 16564 view(s)
  • Scarrosaki's Avatar
    13th June 2019, 11:02
    Feathertwo is very simple setup, it basically goes: Battery -> link -> Feathertwo battery inputs (the single pair of red and black wires at one end) -> red pair to one motor, black pair to second...
    110 replies | 16564 view(s)
  • AdamST180's Avatar
    13th June 2019, 10:52
    Cheers guys, i keep looking at it but then giving up as no idea what im doing :lol: I have an ESC the Feathertwo, not worried about a weapon yet just trying to get it running on the ply base i...
    110 replies | 16564 view(s)
  • Ocracoke's Avatar
    13th June 2019, 10:29
    Yes, Comet uses the 30A versions of the ESC. Not the same weight class but Jibril uses 10AWG wire with a pair of 4S 4200mAh LiFe batteries to drive both the drive and the Scythe (should probably...
    110 replies | 16564 view(s)
  • Roboteernat's Avatar
    13th June 2019, 10:21
    Hey, glad your going to be getting underway wth the robot again. Comet, a FW robot uses the argos battery to power the robot. Is a good starting point, considering you would have 2 batteries from...
    110 replies | 16564 view(s)
  • Scarrosaki's Avatar
    13th June 2019, 10:04
    BristolBotBuilders put a nice little guide up, go to the 'Drive Circuit' section on https://bristolbotbuilders.com/guides.html Would recommend reading through the entire guide as well though.
    110 replies | 16564 view(s)
  • AdamST180's Avatar
    13th June 2019, 10:00
    As my A level electronics course was a long time ago im trying to refresh my knowledge on electrics, can anyone recommend a good website or book i can use? Need basic wiring diagrams etc as got all...
    110 replies | 16564 view(s)
  • Davarius's Avatar
    13th June 2019, 06:41
    Hello! I've decided to try a co2 flipper after building a few HPA ones, but I'm having some trouble making some calculations. For example, let's say I'm using a full pressure system that includes a...
    0 replies | 75 view(s)
  • Davarius's Avatar
    12th June 2019, 04:15
    Hello! I've decided to try a co2 flipper after building a few HPA ones, but I'm having some trouble making some calculations. For example, let's say I'm using a full pressure system that includes a...
    0 replies | 144 view(s)
  • joebrown's Avatar
    11th June 2019, 14:16
    Hi! This is happening this Sunday and everyone is welcome, no sign ups required, bring your ants, come bodge a bodgebot :)
    1 replies | 417 view(s)
  • firefly1's Avatar
    11th June 2019, 12:38
    firefly1 replied to a thread Heavyweight Flipper in Wanted
    Yeah you might need a bigger budget for a heavy flipper.
    5 replies | 345 view(s)
  • Ocracoke's Avatar
    10th June 2019, 16:58
    I was talking with Gareth (of Trolley Rage) about this and he suggested something very similar. In terms of an controller for axes, I guess you would want it to be a on-off affair to get maximum...
    102 replies | 11212 view(s)
  • team death's Avatar
    10th June 2019, 16:38
    In that case you are probably correct, I had two of those blow on my featherweight drive they seemed fine when not under load but they are poor performers compared to the 60 ESC. You might be...
    102 replies | 11212 view(s)
  • Ocracoke's Avatar
    10th June 2019, 16:02
    I think you are referring to the 60A dual channel ESC? I am talking about the 40A single channel ESC, which is the next one down from the 60A. The 60A dual channel is a far more reliable controller...
    102 replies | 11212 view(s)
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