RogueTwo Robots

[RogueTwoRobots]

Yup, quite compact as usual, and it'll probably get more compact still as the cardboard bulkheads are about 2mm thick, and the actual ones will be 12mm thick which will make it seem a lot more cramped. Total size in that first picture is about 410mm long by 320mm wide, but the internal box bit where everything is contained is 180mm by 220mm. It's much easier having a small Scorpion controlling all the drive functions than two Electronizes, mixer and BEC etc. Combined with the smaller dimensions of the brushless motor and speed controller, it makes it possible to shrink the size down. So fingers crossed for meaty drum and hardox armour

[Metal Demons]

Get a reversible brushless esc - a relay big enough to switch the kind of current that a big brushless draws will be rather needlessly large and heavy, you're looking at a big actuated contactor chances are.

[RogueTwoRobots]

Sorry, I should clarify. I won't be switching mid-spin; if the robot gets flipped I'll bring the weapon motor to a stop, change over two of the motor wires via the relay, and spin up again, so I'm just looking at a small setup similar to this:


(from Dale's Homemade Robots: http://www.wa4dsy.net/robot/omegaforce2-robot)


The theory is that I'll be able to do this while driving about and avoiding the opponent's weapon/the pit. Chances are the reality will probably be a lot less successful

[rallikas]

http://www.wa4dsy.net/robot/
A bit OT but that guy makes awesome robots, he puts so much work in this robots and all the robots look cool! But i think his robots dont like spinners !

[Metal Demons]

Sorry, I should clarify. I won't be switching mid-spin; if the robot gets flipped I'll bring the weapon motor to a stop, change over two of the motor wires via the relay, and spin up again, so I'm just looking at a small setup similar to this:
The theory is that I'll be able to do this while driving about and avoiding the opponent's weapon/the pit. Chances are the reality will probably be a lot less successful

You still will need a relay which will handle the current draw though

Obviously you can use a slightly lower rated relay because you aren't using it to disconnect the current - though if you do you'll probably end up welding the contacts - but a usual 30/40A automotive one won't hold up for long.

Maybe just run it in one direction and hit something to flip you back over? Remember that with your tooth design you won't really deal any damage spinning in the opposite direction...

[psycho_fling]

yeh but at the point where Jamie wants to change the drum direction he will be upside down

or do you mean as he is upside down he could just try and hit stuff to flip himself the right way but not causing damage to opponents or the teeth???

[RogueTwoRobots]

Maybe just run it in one direction and hit something to flip you back over? Remember that with your tooth design you won't really deal any damage spinning in the opposite direction...

That was what I was originally planning on doing, but the teeth aren't yet near to being made so I'm going to fiddle round with the design and see how they look with double-edged teeth. There are probably going to be lots of little changes made here and there though throughout the design and build phase so everything I'm saying just now may turn out to be bullplop in the end

[Mouldy]

Jamie ive got two of these;

http://www.robotmarketplace.com/product ... NSTER.html both i think from memory are damaged though.. i put them in 360 and never really liked them- they didnt like running together in a dual brushless setup... your welcome to one if you want to try it out? - castle creations do a repair service, could be worth a look in, If your interested message me your address and ill get one posted of to you.

[leorcc]

Jamie ive got two of these;

http://www.robotmarketplace.com/product ... NSTER.html both i think from memory are damaged though.. i put them in 360 and never really liked them- they didnt like running together in a dual brushless setup... your welcome to one if you want to try it out? - castle creations do a repair service, could be worth a look in, If your interested message me your address and ill get one posted of to you.

I have that one in my offroad racer with a Castle Neu 2200KV. It is also has reverse so no need to do the relay in between. I wouldn't run 2 of these together as they are not sensored and that can create serious timing issues. But as a single Brushless setup it should be fine. And if you think they have it easy in my car you've never seen me drive.

[RogueTwoRobots]

Update - It begins!

Well it's taken longer than planned to get started on Drumroll II but at last got started on some stuff today. The materials for the chassis should be arriving tomorrow so main construction work will begin then, but today I focused on preparing the controller box that will house the Scorpion XL and Align brushless controller.

First of all, I called upon the assistance of an old friend, Cybot

This is a spare half-built one I acquired, still got my completed one up in the loft. But it's a good source of small fixings, components and connectors.

So I borrowed four M3 stand-offs to use to mount the Scorpion XL to the base of the box:


I got rid of the green connector blocks on the Xl and soldered leads directly in a bid to eliminate one point of potential loose connections:

I also borrowed some small connectors from Cybot to solder to the BEC and HV pins. It means if I need to connect up either function in the future I just put the other end of the connector in (pretty much a mini removable link) and I'm sorted.

Then I drilled some holes in the outside of the controller box to pass the connectors through and fitted a fan to aid cooling and also mounted the speed controller for the brushless on the outside too. With the heat it'll generate, it needs the more open space:


All I need to do now is mount it in the robot and connect it up
Oh, and still need to whack a Deans on the brushless speedo battery wires; I'm determined to do away with terminal blocks in this machine.

More updates as it progresses.