Team Eventorizon: Build Diary

[grant_ploughbot]

Re: Team Eventorizon: Build Diary

Looking good a beasty motor your putting there too!

I prefer slower spinning disc's to super speed drum's. It depend's what you want out of the weapon I guess. A pointy single tooth will always do alot more damage than a wide bar will, and so if at over 10,000rpm your not just grinding, your likely to send robots flying in the air rather than tear a huge chunk out.

That's my personal preference though

For the bulkheads - if alumec only comes in such a thick form, it might be worth just going for a nice piece of 2014 or so as that will be plenty strong enough still.

[Eventorizon]

Re: Team Eventorizon: Build Diary

One of conker's points was that the disc was at top speed in less than a second. Ok, it only did it once but it allowed it to flip 4 4 Toon three times while inertia was still spinning up! The reason it burnt out was cos it was touching the dam floor the entire fight. If it hadn't I would reckon that Conker might have racked up enough points to come 2nd rather than last.

This time, its all down to engagement on how fast I will spin it. I would like to be capable of both; tossing for the spectical and tearing for winning. I went for the 2:3 ratio for that reason. Mouldy is getting good engagement with what is similar to a single tooth at around 12K so a true single tooth should be great at that speed.

As for ripping, I will probably design another drum which I can take in and out. Might have to tweak the design so that can happen but it would be worth it. A drum with a single massive (like 30mm, maybe 35mm) tooth on it would me my preference, with a heavy steel tube providing maximum rotational moment.

[Mouldy]

Re: Team Eventorizon: Build Diary

Drums are pretty rubbish at cutting... If that's what you want your best of sticking to a disc... Drums are better at pulling of panels/flipping opponents and generally just being relentless and anoying to fight.

[typhoon_driver]

Re: Team Eventorizon: Build Diary

Best way to win against a drum is with something like NST that can keep it at distance.

[Eventorizon]

Re: Team Eventorizon: Build Diary

Its a hard game to play, picking your weapon. Boner and 720 are both great examples of drums and both have/have the potential to cause massive damage. TBH I don't mind what the damage is as long as it is able to disable an opponent; I would rather not destroy them if I can help it.

But I cant think of anything that is truly any good against NST. TS2 is pretty close as it can get under the bar and toss it up if it hits it right, just like it did in november. My hope for C3 is that NST would bounce up off the front blade and I would be able to get in and attack the bar supports. Also the HK-50 will give me a very short spin up time so I can get in before the bar picks up any kind of speed.

But that is one of the cool things about what we do, there is no right answer or accepted way of doing it as the machines vary so much that its impossible to design for every occasion. You pick your poison and go for it!

[typhoon_driver]

Re: Team Eventorizon: Build Diary

It would rip that ramp off

[Eventorizon]

Re: Team Eventorizon: Build Diary

I am going to use the Sheet Metal function in Solidworks which is something I haven't used before. It will have angled edges to the blade to deflect attacks, I just want to do it properly rather than fumbling it with other steps.
Even still, the bars are 10mm Titanium, the blade and supports are 5mm Ti and the bulkheads total 52mm in thickness. It wouldn't do it any good, probably twist the 5mm welded supports, but I doubt even NST could rip it off in one hit.

[typhoon_driver]

Re: Team Eventorizon: Build Diary

It's your machine.....

[Eventorizon]

Re: Team Eventorizon: Build Diary

New Receivers have arrived along with the new 80A 50V SSR for conker's weapon system.

Probably going to be taking Binky and Conker II to Dork-Bot Bristol next tuesday, by request of one of my lecturers, so if anyone is interested you can come and get a look before it stops being all shiny and white.

And Gary, the sheet metal function is proving a little tricky but this is what I am aiming for...
[attachment=0:383233wp]Conker 3.5.2-1.jpg[/attachment:383233wp]
It just keeps looking more and more like K2.

[Ellis]

Re: Team Eventorizon: Build Diary

Can the little tabs on the scoop's surface be removed? They'd be absolute heaven for any horizontal to eat up.

[Eventorizon]

Re: Team Eventorizon: Build Diary

I thought so to but K2 doesn't have any issues. They only stick up by 5mm anyway and will have welds along the edges so they should, fingers crossed, be ok.

[Eventorizon]

Re: Team Eventorizon: Build Diary

Today has been a mixed day.

The new receiver has completely solved the signal issues I have been having with Binky so I decided to do some tests with the disc at full speed.

The test went well. The disc tends to grind rather then hack at full speed but when I slammd into the cooker it tore through all 4 layers of steel, about 7mm total, right to the oven area in the middle with no problems and still tossed the 360 in the air.

[attachment=2:2y178wef]20130316_135326.jpg[/attachment:2y178wef]

However what I didn't notice until I smelt it was that the wires for the drive Lipo had got trapped between the armour and the new aluminium holder for the battery. The vibration of the disc caused the edge of the holder to act like a saw and cut to the wire inside shorting the lipo. At the point of contact it also burned against the outside of the lipo right down to the plastic covers around each cell.

[attachment=1:2y178wef]20130316_140558.jpg[/attachment:2y178wef]

[attachment=0:2y178wef]20130316_140617.jpg[/attachment:2y178wef]

I have no idea if it is still safe to use. It didn't feel overly hot when it came out but I would be willing to bet it would probably blow if I charged it again.

EDIT: Pictures Embedded

[typhoon_driver]

Re: Team Eventorizon: Build Diary

Can't see the pictures are they are facebook linked.

I wouldn't risk using the lipo again. Get a fresh one and learn the lesson.

[Eventorizon]

Re: Team Eventorizon: Build Diary

Does anyone have any info on the talked about 'Active Weapon' rule that people have considered imposing? Will it be coming into effect any time soon or is still to controversial to be acted upon?

[Ellis]

Re: Team Eventorizon: Build Diary

I believe it's still to be acted on, but it may well pop up before long. I'd have a method of avoiding it if possible, just in case.