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 Camden's confoundations

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Koolaid64
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 8:56 pm

a bar and a shell would pretty much have the same mount, if one gets ripped off then its likely that the other will to
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Camden W
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 8:59 pm

what size shaft do you suggest i use for mounting? I was thinking 1/4-1/2"

also, what would i do with the shaft sticking out the "bottom" of an outrunner when i attach it lengthwise to the bottom of my bot? would i just cut it off?
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Cody
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 9:11 pm

I believe its fairly simple to take apart the outrunner and adjust the shaft through the can
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Koolaid64
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 9:12 pm

1/4" of a quality steel should be plenty

and ya you can just cut if off if you don't need it
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Camden W
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 9:15 pm

mind helping me out on getting some quality steel? cause frankly i have no experience in bot-building Crying or Very sad but you probably already knew that.
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Koolaid64
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 9:25 pm

go to
http://www.mcmaster.com

and paste this in the search box 5227T23

this is what is commonly refereed to as drill rod, its very precise and very strong

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Camden W
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 9:48 pm

awesome thx
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Camden W
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 10:21 pm

woah jeez, this stuffs .283 lbs/in^3 hmmm...i have seriously got to try to get a good frame design drawn with weight specs. I still don't know how i'm going to attach this to my frame...curse me and my procrastinative ways...i got about as far as the drive motors Crying or Very sad
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Camden W
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 11:00 pm

found a nice bit of bottom plating, or is CF a bad idea?
http://www.mcmaster.com/#carbon-fiber/=c5yzrq
8194K52

and emachineshop cant upload images from it...i guess ill just do notebook sketches Rolling Eyes
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Koolaid64
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PostSubject: Re: Camden's confoundations   Wed May 04, 2011 11:11 pm

try g-10 garolite, its basically a poor mans cf

and also try PrtSc and copy past into ms paint
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limeblisss



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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 1:06 am

I don't mean to shoot you down, but it might be a good idea to start simple the first time around. Spinners are not easy to make in general, and although fun, not as effective as a good wedge. Gilbert has been dominating the antweights through good design and great driving.

For the fbs, although its not what you want, you could just direct drive an upside frying pan to a brushless motor. You could do it with the tools you have I bet.

And for reversing the shaft on a brushless motor, this way means you won't necessarily have to cut the shaft off:

http://www.machinegrid.com/2009/11/reversing-a-hacker-style-brushless-motor-20-22l/
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Camden W
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 7:35 am

Koolaid64 wrote:
try g-10 garolite, its basically a poor mans cf

and also try PrtSc and copy past into ms paint

well, i can't get it to do quite what i want (it is 2d, after all)

and on the garolite, looks good Smile do you guys have any suggestions for structural frame material? mainly for the centerpiece attachment.

and for that frying pan, i would have to get very precise with that before i would want to use it Rolling Eyes and i still need to figure out how to mount the center first Neutral
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Koolaid64
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 8:37 am

polycarbonate, UHMW, aluminum.

take your pick
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Camden W
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 4:40 pm

I was thinking 3/16" UHMW connected to 4 or 6 spacers placed around the bot, with a small bearing pressure-fitted and glued in the center to hold the rod. though the thickness i want isn't there, should i go thicker 1/4" (cheaper for some reason Shocked) or thinner 1/8" ?
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Camden W
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 5:00 pm

affraid drive motor get.

http://www.scorpionsystem.com/catalog/motors/s22_series_v2/SII-2205-1490KV/

thank youuuu, alex!

freaking perfect motor for all antweights!! especially mine! What a Face bounce Very Happy affraid
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Camden W
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 5:41 pm

i could make both, with interchangeable pieces like a lot of teams do Very Happy

a really heavy blade or a nice shell (new fablab available for use this September at my high school) Wink
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Camden W
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 5:57 pm

gah i just realized the speed control i found is expensive and can only handle an amp... i need a nice 10-12 amp model...what do you guys use?
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Koolaid64
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 10:17 pm

you need to distinguish between your weapon and drive systems, im never really sure witch your talking about sometimes Wink
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Camden W
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 11:15 pm

hk?

i found a very nice looking one

the Phoenix-10
http://www.castlecreations.com/products/phoenix-10.html

and do they count the auto shutoff feature as an emergency shutoff?


Last edited by Camden W on Thu May 05, 2011 11:20 pm; edited 1 time in total
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Camden W
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 11:23 pm

heh. and here's a comparable esc/bec for 1/8 the price of castle's...
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11429

or this one, i can't decide...
http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=4204
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Camden W
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PostSubject: Re: Camden's confoundations   Thu May 05, 2011 11:30 pm

http://www.mcmaster.com/#uhmw-polyethylene/=c6iagc

there's my choice for top frame.

On sunday i'll reload an updated list of materials
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Camden W
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PostSubject: Re: Camden's confoundations   Fri May 06, 2011 5:38 pm

yay for used parts! ^_^ alex's used axi would work perfect on it! he even modified it already cyclops and at $20 it's perfect! i'll be able to work on design when i get it Very Happy (it's based around the weapon motor, after all)

http://www.hobby-lobby.com/brushless_axi2204.htm
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Camden W
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PostSubject: Re: Camden's confoundations   Fri May 06, 2011 5:58 pm

Alex has a freaking plethora of good stuff for his bots! maybe cuz of his experience, but anyway, i like his battery choice
Eflite
730mAh 3S 11.1V G6 Pro Lite 25C LiPo, JST
http://www.e-fliterc.com/Products/Default.aspx?ProdID=THP7303SPL25J

it's not even on their website if i try searching for it!
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Camden W
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PostSubject: Re: Camden's confoundations   Sat May 07, 2011 12:12 pm

i think i'm going to go with 1/8" premium or high-temp UHMW for both bottom and top, its relatively cheap and the premium has an impact resistance of 30 ft-lbs/in, perfect for what i'm using it for Very Happy
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Cody
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PostSubject: Re: Camden's confoundations   Sat May 07, 2011 1:21 pm

you wont see any noticeable difference between regular and premium
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