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 IQ 2011 Miami

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Jeff L
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PostSubject: Re: IQ 2011 Miami   Thu Feb 24, 2011 7:50 pm

I made a skype call yesterday when the Ransom crew was getting checks done, and for once it looks like the majority of their robots are done on time. It's a sign of the Apocalypse! Razz

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Cody
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PostSubject: Re: IQ 2011 Miami   Fri Feb 25, 2011 2:58 pm

Another lipo fire at a botsiq event?
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PostSubject: Re: IQ 2011 Miami   Fri Feb 25, 2011 3:51 pm

BAN THEM !!!!! GO A123 !!!!
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Jeff L
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PostSubject: Re: IQ 2011 Miami   Fri Feb 25, 2011 4:15 pm

Looks like they're prepared though - bags of sand at the ready.

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PostSubject: Re: IQ 2011 Miami   Fri Feb 25, 2011 4:43 pm

Jeff L wrote:
Looks like they're prepared though - bags of sand at the ready.

NRL is also very prepared for them....
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Jeff L
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PostSubject: Re: IQ 2011 Miami   Fri Feb 25, 2011 4:52 pm

Cody wrote:
Jeff L wrote:
Looks like they're prepared though - bags of sand at the ready.

NRL is also very prepared for them....

Not the place for this argument.

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SenaiERI
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PostSubject: Re: IQ 2011 Miami   Sat Feb 26, 2011 10:20 pm

Frisco wrote:
BAN THEM !!!!! GO A123 !!!!

I second the motion.
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turtle
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PostSubject: Re: IQ 2011 Miami   Sat Feb 26, 2011 10:21 pm

i agree a123's are the way to go
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Jeff L
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PostSubject: Re: IQ 2011 Miami   Sat Feb 26, 2011 10:28 pm

SenaiERI wrote:
Frisco wrote:
BAN THEM !!!!! GO A123 !!!!

I second the motion.

<sarcasm>
Yes, ban what is currently the most common mobile device battery chemistry on the planet.
</sarcasm>

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PostSubject: Re: IQ 2011 Miami   Sat Feb 26, 2011 10:39 pm

While we almost can't do without the high discharge rate of Lipos, lately a lot of fairly new Thunder Power packs have been randomly developing bad or weak cels.... Rolling Eyes

We only charge them in balancing mode and at 1C and still.....we sent 6 packs back and they got replaced for shipping cost, butit's getting a bit out of hand...imo

this ain't no cel phone application and I really hate failure due to a Chinese low bidder product....I think?

1 of our wedge bots still uses 3 year old A123's and they still work fine , although power demands are very low

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SenaiERI
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PostSubject: Re: IQ 2011 Miami   Sun Feb 27, 2011 12:25 am

So Thunderstuck Mini, though after the match with fluffy 3.0 not running at full speed, uses A123's. We charged them last Wednesday before the competition. We competed all week and did a lot of testing, and NEVER HAD TO CHARGE THEM ONCE! We ran the entire competition on one charge.

Again, we couldn't run our spin as high as we wanted cause of the bad shell but you have to admit the A123's have a very high capacity.

Oh and have we mention they're stable? Don't by the knockoff's but they don't go bad.
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Cody
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PostSubject: Re: IQ 2011 Miami   Sun Feb 27, 2011 3:45 pm

Jeff L wrote:
SenaiERI wrote:
Frisco wrote:
BAN THEM !!!!! GO A123 !!!!

I second the motion.

<sarcasm>
Yes, ban what is currently the most common mobile device battery chemistry on the planet.
</sarcasm>

I didnt know we we're building cell phones.....
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Jeff L
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PostSubject: Re: IQ 2011 Miami   Sun Feb 27, 2011 4:28 pm

LiPo's are also not the most common source of noxious fumes [and occasionally fire] in battlebots. That title would belong to speed controllers.

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Jeff L
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PostSubject: Re: IQ 2011 Miami   Sun Feb 27, 2011 4:41 pm

These aren't high explosives. Common sense in safety procedures and the design of arenas can already handle a robot going totally up in flames - after all, ICE & fuel use can already be handled by most arenas and competitions outside of the insect and hobby classes, and that's definitely more prone to catching fire than a LiPo.

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PostSubject: Re: IQ 2011 Miami   Sun Feb 27, 2011 5:13 pm

Since you have never been to a competition outside of miami I dont think you realize how little most of these kids know. These are hardly robots. Most of the schools in the 15lb class are vocational schools and these kids have no idea what any of the electronics are let alone how they work. Yeah lets let them play with lipos. Not everyone practices the same precaution as most of us here. There are schools that try to use lipos because they didnt even read the rules.
Are ICE allowed in the 15 lb class?! Thats as good of an example as a 3.7 volt 800mah cell phone battery...
My phones battery is li-ion anyway.
I do believe right now robogames is the ONLY event with ventilation in there arena anyway.
I like this sport I'd rather it not be ended because someone gets hurt because of a lipo, if they were allowed in all educutaional organizations it will happen. (while I do applaud them for being prepared now, the lipo fire trend in miami only strengthens the argument to not allow them in BotsIQ)
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Jeff L
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PostSubject: Re: IQ 2011 Miami   Sun Feb 27, 2011 6:34 pm

Alright. I can see the sense in the argument that only a large robot should be permitted to use batteries other than LiFePO containing lithium, seeing as just about once every competition some robot or other smokes out in a big way in those weight classes. Along with that, 120's and up can use more dangerous ICE's so there's not much of an additional risk in running lipos. However, if you want to ban lipo batteries, be ready to ban every lithium-chemistry battery other than LiFePO; all of them burn when cut, and all of them can catch fire when charging if they contain Lithium.

For the record, every tournament I've been to with 120s present (BattlebotsIQ/BotsIQ tournaments from 2005-2007 [Orlando, Coconut Grove, Miami Beach]) had a properly ventilated large-class arena without fail.

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PostSubject: Re: IQ 2011 Miami   Sun Feb 27, 2011 6:55 pm

Thinking about it now where exactly were the Botsiq large arena even vented to?
I cant even think of a mini arena with ventillation(pretty sure there isnt one but I could be wrong)
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Jeff L
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PostSubject: Re: IQ 2011 Miami   Sun Feb 27, 2011 7:35 pm

Cody wrote:
Thinking about it now where exactly were the Botsiq large arena even vented to?
I cant even think of a mini arena with ventillation(pretty sure there isnt one but I could be wrong)

Usually it was a 1'-2' duct (with fan) that led from the ceiling of the arena out a side door behind the stands. So far I haven't seen a mini or hobbyweight arena with ducting, although I bet it would be easier to add ducting to a small arena than to a large arena that doesn't have ducting.

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PostSubject: Re: IQ 2011 Miami   Sun Feb 27, 2011 10:04 pm

the new 15lb arena here in mass has an exhaust fan, but it really hasn't had much use because nothing has ever really caught fire.... (We don't have any teams using Lipo's though, most of us are still on NIMH)

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PostSubject: Re: IQ 2011 Miami   Sat Mar 05, 2011 3:38 pm

There were a few busted batteries at the event last week. No big deal. The fire extinguishers did what they are supposed to do. The smoke clears, the bots are hauled out and we move on. The place LiPos really hurt is in the wallet.
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