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[pcbore]

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I think having stuffed or solid tyres makes the wheels heavier, so maybe Gravity didnt have any weight to spare?

[fluppet]

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True, but its one of those things Id expect to design in (call me a novice, but...) at a fairly early stage. I thought stuffing them with some kind of foam (possibly inflating them afterwards?) was the usual light weight technique to allow them to run flat. Id gladly have a few holes drilled in my armour (in the right place) in order to stop the wheels being so vulnerable.

But then, what do I know? Just a bit surprised that such a proficient robot was vulnerable in so simple an area.

--
Fluppet

[gravity]

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exactly, what do you know ?

Both tires were punctured by the horns on the wedge off tornado. The flaily thing didnt do shite, as we all know. We lost againast a sharp box on wheels, so be it.
Why not fill up the tires ? Same answer as on the question why only 4 mm of polycarbonate armour ? No time, no weight, too lazy. Dont forget, Gravity was built in 4 weeks, and hadnt had a fight before series 7.

And its true. I dont fear any other robots. Why fear a robot ? Simple fact is, tornados wedge was lower than mine. that was the end of it. Im not gonna say if this or if that. Tornado won, fair and square.

But it still is a weaponless box on wheels

[pcbore]

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And in the new bloods, storm 2 proved that weaponless boxes on wheels can kick arse. Whats your point? :P

[fluppet]

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:-) Thank you for setting me straight, WJ. I hope you took no offense at my comments.

To be fair, it didnt look like your tyres were punctured so much as partly pushed off the wheels by the horns (in the small amount of coverage where you could see it) - or possibly punctured *in the process* of looking like they were about to come off the wheels, anyway. Any type of tyre would have struggled. Interesting tactic, and a detail of Tornado I hadnt really registered in the past (learn something new every day).

But still, thanks for the demonstration of why I need to make time and weight available for puncture proof tyres. :-) I appreciate (even as a novice) that the weight is always a struggle and, although I think I knew, I *had* forgotten that Gravity was built so quickly - so you have my sympathy when it comes to time consuming details like sorting the wheels. I commend you for your building pace, and hope I get as proficient someday when I have to rebuild the bits of my robots that others leave scattered over the arena.

The fearing thing is tongue-in-cheek - goodness knows your performance means that you have the right to be confident, but I did think that you were jinxing yourself the moment you said that. I guess your level of fear can be lower if you can build the things in four weeks (rather than, say, six months) anyway - less time lost if you get trashed! Oh to be so handy with a MIG welder.

I look forward to seeing the next version of Gravity (with puncture proof tyres) in the future.

--
Fluppet

[gravity]

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soz, but the next version of gravity will be back to basic. Im using a 67 mm bore x 320 mm stroke ram (old one I had laying around) and 2 fire extinguisher valves to control it. Drive will be powered by wheelchair motors. The sport is costing me waaay too much money, and to be honest, the sport isnt that big here in Holland.
Could be true that I jinxed myself there, but hey, what could I possible fear from a box on wheels ? only 1 thing I see now and its not the puncturable tires, its the heigth of the wedge. Take a robot like Big Nipper, this has 2 points sticking out of the front of the robot (doubling as lifter and cruncher) which are impossible to get under, once he has em fully down... To be able to get under another robot equals to be able to control a battle.

And by the way, it didnt run that bad on 2 flat tyres, now did it

and @ Frank: I just dont like something weaponless. And dont get on about its a weapon by itself blabla, I just see it differently.

[gravity]

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Just seen heat 17...

Gooooood show !!!
Didnt realise just how high Dantomkia flew !!!
And saw the footage of the interview previous too the fight against Tornado... and it wasnt me talking them down ! It was one of my so called teammates. I dont have a team, just had these 2 guys along for series 7, to help me carry the robot around and stuff.

Tornado did drive me around the arena a lot , Gravitys never moved that fast

[fluppet]

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Was indeed - good loft on that upswing. :-) And sorry I maligned you about pooh-poohing Tornado - with friends like that...!

Still, Ill look forward to the next Gravity, now youve got a bit more experience and feel you need the challenge of a cheaper design! The flat tyres did remarkably well. And Gravity does, indeed, drive backwards and sideways very quickly when perched on Tornado.

Still think you might want to proof the tyres as well with the next one, though.

Without having paid it much attention, are Tornado the only robot to have been thrown more than three feet into the air by more than one robot? (Gravity and WBC.) Odd statistics of our time...

--
Fluppet

[Guest]

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Sorry about your budget William, I really would have wanted to see an even better flipper on the next Gravity...

But still, the weapon alone doesnt make a good robot? The ability to get under your opponent is just as important, just look at http://www.robotbooks.com/biohazard.htm>

[gravity]

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Good point Christian.
But a decent weapon certainly disorientates (is that a word?) your opponent if it makes you do a 720... The next robot will have a Big Nipper style wedge, so should be as low as possible. And a 67mm x 320mm full pressure ram still puts out quite a decent punch

[Guest]

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What about buffertanks?

[gravity]

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yes, 1 2litre buffertank.

[terryc]

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Nice to hear that youre building from scrap WJ. Were 75% scrap, reclaimed or own built componants. I tried cutting an ex helicopter (big red Hawker)scrap battery in half this weekend to see if that would get them into our weight allowance. It worked. I need to find a decent epoxy to reseal and then some more tests. If all is OK Ill post on TIPs.
St. Agro

[Guest]

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But WJ, what about the 140*120 ram you had planned to use earlier? Have you sold that?

[mc_blue]

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The main problem with that fight was that the front of Gravity was too light. Is this due to the removal of a buffer tank?

One question, will the new Gravity prove to be even more powerful than the last version?