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 IQ 2011 Miami

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Location : Miami

PostSubject: IQ 2011 Miami   Sun Apr 25, 2010 9:18 pm

Edit- Thanks Dan.


At IQ 2010 Nola announced IQ 2011 to be in February 2011 in Miami...Plenty of lead time!!!

Got plans? CAD? Comments? Anything?

Post'em here.


Personally I'll be back probably as an FIU team to avoid the whole Pro vs College thing. Bringing back an upgraded Witch Doctor for sure and maybe something new. Come on fellow college kids.... lets get some more 120's active!
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Jeff L
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PostSubject: Re: IQ 2011 Miami   Sun Apr 25, 2010 10:08 pm

We'll probably be able to attend - Sum of all Fears is still slowly creeping toward completion, and we should start testing at the beginning of Fall semester. We might even be able to get non-NiCad batteries!

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PostSubject: Re: IQ 2011 Miami   Sun Apr 25, 2010 10:11 pm

If you wanna roll A123 lemme know. I'll hook you up.
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rjw
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PostSubject: Re: IQ 2011 Miami   Sun Apr 25, 2010 10:35 pm

can you elaborate on the 'whole pro vs college thing'

thanks

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PostSubject: Re: IQ 2011 Miami   Sun Apr 25, 2010 10:50 pm

Busted Nut Robotics is Mike, Paul and me. I'm the only one in college so we registered as Pro. At the beginning of the event is was unclear who exactly we were fighting but it got resolved and turned out fine. Competing as FIU would just make things less complicated.
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PostSubject: Re: IQ 2011 Miami   Sun Apr 25, 2010 11:09 pm

i asked, cause out kids may actually get a 120 together for next year....

one problem is tip speed....in hs it's limited to 300 fps, college is 400 and pro is 500....if they max out at 300 and have to face college and pros, which would probably happen, especially if the numbers are low, then we would like to know that we can turn up the juice, if facing non hs teams

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PostSubject: Re: IQ 2011 Miami   Sun Apr 25, 2010 11:45 pm

Worried about tip speed on the 120lber that's in that 3dpdf? I see those shorties are being geared up. Must be running 36v too. Mags may be "82%" efficient but that's peak. Efficiency at lower rpms (where you'll spend more time then most because of gearing up instead of down) is much less, meaning even more heat which means demagnetized magnets (has happened to me with a C40 mag which has even higher temp magnets), overheated brushes, melted insulation on internal motor leads, or cut armature windings. I've personally had all of those happen to me. You would need a current limit somewhere (esc or battery) but that would make spinup painfully slow to reach those high rpms. All I'm saying is plan on adjustable ratios.... or a retrodirect 2spd gearbox....
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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 12:02 am

RemoteContact wrote:
Worried about tip speed on the 120lber that's in that 3dpdf? I see those shorties are being geared up. Must be running 36v too. Mags may be "82%" efficient but that's peak. Efficiency at lower rpms (where you'll spend more time then most because of gearing up instead of down) is much less, meaning even more heat which means demagnetized magnets (has happened to me with a C40 mag which has even higher temp magnets), overheated brushes, melted insulation on internal motor leads, or cut armature windings. I've personally had all of those happen to me. You would need a current limit somewhere (esc or battery) but that would make spinup painfully slow to reach those high rpms. All I'm saying is plan on adjustable ratios.... or a retrodirect 2spd gearbox....

Actually, at this point we have some of the long and short mags, an ampflow esc, etc. so they are designing according to what they have at the moment.

I personally have little experience with the mags, and if we had the budget, we'd be looking into brushless alternatives and keep the mags as backups for the drivetrain.

drum will probably weigh around 25 pounds and will certainly be running on bearings. any suggestions? I've only looked at some of the bigger neu motors so far....but I think that with their current design, that they could probably fit almost anything in there...

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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 12:21 am

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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 12:31 am

don\'t think that any of those would have the r\'s that we want ...in keeping with the current philosophy of.....too fast, too loud, all show and no go....

we were thinkin something more along the line of a pair from this page

http://www.neumotors.com/Site/2200_series.html

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Last edited by rjw on Mon Apr 26, 2010 12:42 am; edited 1 time in total
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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 12:39 am

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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 12:53 am

I'll say one thing for the hype on neu/castle motors.

They aren't lying when they talk about heat/efficiency. after playing with some align, axi, feigao, scorpion and a few other motors, the neu's definitely run a lot cooler. we use a laser temp gauge to monitor under various loads and the difference has in general been somewhat drastic.

I've heard a lot of good things about the astros, nad have spoken with the head honcho over here on a few occasions....but haven't tried any of their motors personally.

I would just like to hear an offset tooth or single tooth drum in a 120 at over 20 or 30k...just for giggles.....

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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 2:26 am

The cool part about astroflight is that Bob will sell you a motor with a custom (read hot) wind for not much more. He'll also do dual shafts, powdercoating, 6 phase leads instead of three for delta/wye switching, etc.
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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 5:22 am

Cody Harris wrote:
still not the specs, i just want someone to use it

http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=5139&Product_Name=Turnigy_80-100-A_180Kv_Brushless_Outrunner_(eq:_70-55)


the link wont work for me :/

:Ummm, the guy who started this thread used that motor--in his winning robot, Witch Doctor.

It was exactly as awesome as you might guess.
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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 11:15 am

wellllll i havent seen any decent inside pictures
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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 12:56 pm

Actually we used the slower 130KV one. Thanks Mr.Dubard!

Now can somebody please find me a link to a 16s 100+amp brushless esc I can buy today?

Back on topic....

What are you guys planning on bringing?
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Cody
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PostSubject: Re: IQ 2011 Miami   Mon Apr 26, 2010 4:15 pm

ehhhhhhhhh, its so closse

http://www.hobby-lobby.com/spin300p_spin_300_amp_opto_speed_control_rc_speed_control_421409_prd1.htm


i think scorpion may be working on something
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PostSubject: Re: IQ 2011 Miami   Tue Apr 27, 2010 11:25 pm

on those neu motors, my question is what kind of ESC they expect you to use!
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PostSubject: Re: IQ 2011 Miami   Tue Apr 27, 2010 11:33 pm

Will Bales wrote:
on those neu motors, my question is what kind of ESC they expect you to use!

I guess whatever they use in those BIG friggin model planes....lol

Maybe one of Cody's turnigy 14 cel 300 amp jobbies.....a good fire candidate...or castle HV blah blah blah....

Our problem would be the need for a reversing esc.... affraid

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PostSubject: Re: IQ 2011 Miami   Tue Apr 27, 2010 11:37 pm

its a jeti gosh!!! lol
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PostSubject: Re: IQ 2011 Miami   Tue Apr 27, 2010 11:43 pm

Cody Harris wrote:
its a jeti gosh!!! lol

Sorry...so that one's made in the same factory as the Jedi saber swords ...... jocolor

I know the foreman...his name is Sum Yung Guy

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PostSubject: Re: IQ 2011 Miami   Tue Apr 27, 2010 11:46 pm

that sounds like my gf tang soo do teacher lol

ive never seen this one before
http://www.schulze-elektronik-gmbh.de/index_uk.htm
edit: fut-xxl-40.300 is what i was trying to link to

for the 2230 i have no freakin clue


lol i have no clue what im doing!
http://brantuas.com/ezcalc/neumotorscalc.asp
go for the 2215/2y,neuenergy 4900 batteries,14 cell and shulze future 18.### esc


Last edited by Cody Harris on Tue Apr 27, 2010 11:59 pm; edited 2 times in total
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PostSubject: Re: IQ 2011 Miami   Tue Apr 27, 2010 11:51 pm

you could always just use a servo to manually switch the leads to reverse the motor during a fight, just make sure its secure enough and put it on a switch channel to have stay in contact in one direction and flip the switch and the leads switch. It god awful ugly but i used a similar system on my freshman flipper which had little to no funding so i mad my own motor controller which gave me direction control but no speed. But if you combine my direction setup with an actual speedcontroller your in the clear and its CHEAP
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PostSubject: Re: IQ 2011 Miami   Tue Apr 27, 2010 11:52 pm

I especially like the especially low price , drastically reduced one..... bounce

Is there anything in the rules about using small animals in a combat robot?

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Last edited by rjw on Tue Apr 27, 2010 11:55 pm; edited 1 time in total
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PostSubject: Re: IQ 2011 Miami   Tue Apr 27, 2010 11:53 pm

An alternate choice, aka "the choice you take if you really want to show off your skills" (courtesy of Charles Guan): http://www.instructables.com/id/Make-Your-Own-Miniature-Electric-Hub-Motor/

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