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  1. Replies
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    Depends on weightclass. But brushless drives are...

    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...
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    The fans on the Vyper (and Victors ) still are...

    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...
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    Depends on surface area and total mass. Color and...

    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.
    ...
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    Passive cooling is better than fans. But if you...

    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.
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    Have a go with fans. Please tell us the results....

    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...
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    Fans in robotwars belong in the stands, not in...

    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...
  7. :) Looks promising.

    :)

    Looks promising.
  8. I'm not even near you; but I want to test out my...

    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?
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    60A is a tad low for our application. But with...

    60A is a tad low for our application. But with the right shock mounting, those could be usable.
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    If cost is a hindrance, start smaller. A heavy...

    If cost is a hindrance, start smaller. A heavy will cost you a 2de hand car in the run of a few years. It ain't a cheap hobby.

    On the other hand, it's a very satisfying hobby that will boost your...
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    What do you call cheap? ESC's that are difficult...

    What do you call cheap? ESC's that are difficult to control? Lacking fine control, making the machine unsteerable? Or blowing up every fight some demand is placed upon them?

    A good ESC is...
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    Theo, for all classes, most LiPo's are approved...

    Theo, for all classes, most LiPo's are approved by the FRA and subsequently the event organisers.
    Team RCC used 5000mAh and 8000mAh "el cheapo" Hobbyking LiPo's in Bullfrog, and never had any...
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    That is a heap of capacitators... Don't believe...

    That is a heap of capacitators... Don't believe that will fair well in our mechanical gladiators.

    I agree with Gary. Buy cheap is to buy a lot more. And still end up with one of the more...
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    The big teeth that do the work destroying the...

    The big teeth that do the work destroying the opponents. A Monoblock spare disk is a good plan. I think you'll need it.

    On the gear-rings. I hope you will do the spare disk with full length...
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    I have to admit. Impressive in total, but I'm not...

    I have to admit. Impressive in total, but I'm not so happy on the welds. Especialy the ones for the teeth scare me.
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    50 kg on top of the front lifting plate. So,...

    50 kg on top of the front lifting plate.

    So, with a 200kg Linak you can topple an opponent with a 3-1 leverage. (I use gutfeeling and distract mechanical losses)
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    According the picture it's a standard Viper and...

    According the picture it's a standard Viper and has 1 channel, unlike the older brother, the Sidewinder, what had 2 channels.
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    That Imax B6 charger is the go to for every...

    That Imax B6 charger is the go to for every starting roboteer. Fine charger for featherweight LiPo's (and every other useable battery technology, even lead acid). But will need a powersupply. The...
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    That ram is a rebuild bottlejack. The motor is...

    That ram is a rebuild bottlejack.

    The motor is a Johnson 51mm , the same as a Speed 900 but faster running and a shaft of 1/4" or 6.35mm
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    One of the motors I had in mind for an hydraulic...

    One of the motors I had in mind for an hydraulic unit is http://www.revolt.org.il/rv-160-model/rv-160-short/]this monster[/url].
    The 81 KV is about perfect to be combined with 10S LiPo and a 5.8cc...
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    This unit will spill oil when inverted, and will...

    This unit will spill oil when inverted, and will need a conversion.
    On test points, the valveblock has enough threaded holes to put one in.

    What I would change. About everything.
    Replacing...
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    7 tons on a ram, with an affordable hydraulic...

    7 tons on a ram, with an affordable hydraulic unit. 200bar work pressure peak =63mm bore ram.
    3,1 Liter volume with 100mm stroke.
    20mm sec= 3.1*5= 15.5l/min , this is a lot for a cheap unit. (+/-...
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    High speed "grinding" tools will melt the HDPE. ...

    High speed "grinding" tools will melt the HDPE. You can offset that fact a bit by using coolant, even using a brush and water will help.

    But the best way to work HDPE is to use low speed...
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    The Banebot gearbox, as well the Portugese REC,...

    The Banebot gearbox, as well the Portugese REC, the UK Saturn and Neptune (and grandfathers of'm, de GR01 and 02) are all based on something easy and simple to get, batterydrills. The only thing...
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    If the machine stays in weight, anything is...

    If the machine stays in weight, anything is allowed as long the basics of the machine don't change.
    Because, if you go to far the other way, even a welding bead on the armor could be seen as a...
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