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  1. Replies
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    Time for an update. Things have changed. A...

    Time for an update.

    Things have changed. A lot. After a third attempt at getting on Robot Wars and some drivability problems with Big Dave 3, we sat down and had a little (almost complete)...
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    Big Dave 3 did originally have 180A Turnigy...

    Big Dave 3 did originally have 180A Turnigy Marine ESCs for its brushless drive! However, between the motors having wildly varying winding quality, off centre robot balance and not being able to...
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    Hi Adam Here's the link for Charles:...

    Hi Adam

    Here's the link for Charles: http://e0designs.com/contact/
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    We use a 270 ohm resistor for our anti-spark...

    We use a 270 ohm resistor for our anti-spark link! Have you reached out to E0D/Charles to see what might be up with it?
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    How are you protecting the main weapon gear from...

    How are you protecting the main weapon gear from vertical shearing? A upwards hit on one of the teeth must put a load of shock through the robot, might misalign the gear teeth.
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    Can't wait to see it in an arena! Who did your...

    Can't wait to see it in an arena! Who did your hardox?
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    It was great seeing the Honey Badger be so...

    It was great seeing the Honey Badger be so resilient against so many other bots! I hope the new tupperwear box holds up!

    Rob (Team ARC)
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    Hi Steven, Team ARC will be at Robots Live this...

    Hi Steven, Team ARC will be at Robots Live this weekend - my day job is a documentary producer, so I would be very interested to hear what your plans are!

    Look for the ARC shirts/hoodies, we don't...
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    Hi - welcome! Read this:...

    Hi - welcome!

    Read this: https://www.riobotz.com/tutorials

    That'll get you started. In terms of recommending components, could you elaborate on your design a little more?
  10. Team ARC will be there with Catch Me If You Can!...

    Team ARC will be there with Catch Me If You Can! Now, with "improved" wedge, as spinning weapons aren't allowed at this event. We're bringing several spare numberplates, as we're not quite sure how...
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    Jeremy, it sounds like you have yourself an...

    Jeremy, it sounds like you have yourself an excellent solution.

    However, if you're still interested, this here is the O Ring Bible:...
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    That's a shame. O ring sealing is never fun, and...

    That's a shame. O ring sealing is never fun, and rarely right on the first or second try.

    What pressure are you trying to seal? I'm alright with reciprocating O Ring glands
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    Hi Jeremy, did your ram get certified in the end?...

    Hi Jeremy, did your ram get certified in the end? Trev mentioned Robot Wars parts but I didn't catch him before he went off again
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    If they're held on with threads, throw some red...

    If they're held on with threads, throw some red loctite on there.

    Loctite-Threadlocker-Red-271.htm

    You might need a series of strong people (and a blowtorch) to get it off again though.
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    Beautiful. I'm very interested on how the...

    Beautiful. I'm very interested on how the clutching system works, as that looks to be some serious force you're putting through there!
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    If you've not seen it, Ellis's excellent build...

    If you've not seen it, Ellis's excellent build diary on his latest featherweight, Neon, is well worth a read: https://www.facebook.com/teamranglebots/posts/1735472470090422
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    Big Dave 3's weight allocations are as follows: ...

    Big Dave 3's weight allocations are as follows:

    Chassis: 35KG
    Weapon (all rotating mass & bearings): 40KG
    Armour: 25KG
    Electronics etc: 10KG

    Although, with that being said, not quire sure...
  18. Thread: Magnexxica

    by emisnug
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    A bit cheaper in my experience though. And, iirc,...

    A bit cheaper in my experience though. And, iirc, a yield strength of somewhere in the region of 1850MPa. But can't remember
  19. Thread: Magnexxica

    by emisnug
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    In terms of tooth material, it's worth looking at...

    In terms of tooth material, it's worth looking at tool steel. We're using H13 that's been tempered to 55HRC.

    It looks like a cool build - very interesting if you can with inside the weight limit....
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    The main reason I want to figure it out is so I...

    The main reason I want to figure it out is so I know how much energy my feather has the potential to impart (although, other factors, such as lack of skill, play a huge part in that) - plus, I much...
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    And so it has, somewhat. The page doesn't really...

    And so it has, somewhat. The page doesn't really explain what "l" is, or how the impact area affects it
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    Impact Energy of a Hammer

    So, my mathematics has failed me once again. I'm looking to work out the impact force of a hammer, while knowing the ram force, arm length and impact area size.

    Ram Force (at full extension):...
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    Great to hear! Yes, HPAC have been around for a...

    Great to hear! Yes, HPAC have been around for a while. Very nice bunch of guys - if Trev's there, ask him about his lawnmower tank! (I know him from tournament paintball)
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    HPAC (http://hpac-armourlite.co.uk) might be able...

    HPAC (http://hpac-armourlite.co.uk) might be able to help you with pressure certifications. They're running a little slow at the moment because Trev's in hospital, but they've certified some of my...
  25. That's a crazy good price! Can't wait to see it...

    That's a crazy good price! Can't wait to see it all up and running
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