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 Camden's confoundations

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Koolaid64
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PostSubject: Re: Camden's confoundations   Sat May 07, 2011 1:39 pm

Cody wrote:
you wont see any noticeable difference between regular and premium

your wallet will see the difference
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 11:10 am

@alex I will keep that in mind Very Happy

so ill use high temp then, stiffer and 1/2 price XD
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 11:19 am


this is the motor everyone wants me to get Smile $20 + 5 for shipping i assume, just gotta get a paypal acc working...


but what about this one? is it any good? it has a super low profile.
...scratch that...its an inrunner, i'd need to keep some of the shaft Rolling Eyes


Last edited by Camden W on Sun May 08, 2011 11:23 am; edited 1 time in total
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Koolaid64
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 12:20 pm

gota love brushless motors, you can beat the living crap out of them and they'll still run like crazy
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 2:05 pm

and soon it will be all mine Very Happy
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 6:20 pm

Alex Udanis wrote:
Camden W wrote:


but what about this one? is it any good? it has a super low profile.

That is part of a banebot gearbox.......

oops lol yea i took a second glance at it... Embarassed
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 7:11 pm

ok, i found a ESC that has all the features i could possibly want, and at a decent price (same price i bought my tux for prom Razz)
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 7:54 pm

parts list update!!
Controller: http://www.fingertechrobotics.com/proddetail.php?prod=hk-t6a
Reciever: Shocked (help?)
ESC: http://www.fingertechrobotics.com/proddetail.php?prod=hk-t6a
Mixer: http://www.fingertechrobotics.com/proddetail.php?prod=TR-V-tail
Battery: http://www.e-fliterc.com/Products/Default.aspx?ProdID=THP7303SPL25J
Motors (weapon):modified AXI 2204/54 from alex u http://www.hobby-lobby.com/brushless_axi2204.htm
(drive): 2x http://www.pololu.com/catalog/product/1093
frame: high-temp UHMW http://www.mcmaster.com/#uhmw-polyethylene/=c7yvmy #8270K21 or 8270K31
weapon: tin from bean cans
structural inserts: http://www.mcmaster.com/#threaded-inserts/=c7xmxd #99362A100
Spacers: http://www.mcmaster.com/#threaded-standoffs/=c7ywom (need more motor data first)
bearings (weapon): http://www.mcmaster.com/#ball-and-roller-bearings/=c7z0fg #57155K378 or 3759T39
screws: something from mcmaster
nuts: more confusion
Wheels: 1 inch dia. 1/4" width 3mm d axle connection w/ setscrew

still got some work to do...do i need individual motor controllers for each poulu motor, or can i hook them directly to the reciever?
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 8:14 pm

didnt realize that was radio... ok, im gonna go straight from spektrum. they have a really nice transmitter-reciever package http://www.spektrumrc.com/Products/Default.aspx?ProdId=SPM5510
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 8:17 pm

I can tell you right now that a tin can is NOT going to be strong enough. I had a 1mm frying pan as a shell on my fbs and it bent into an oval when hitting a plastic toy.

For the radio, you can use that Hobbyking one with the v2 receiver I think. I'm not too sure, but the transmitter might have programmable mixing so you don't need the external mixer...
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 8:23 pm

sweet. that mixer just takes up space and weight, and the tin can is a joke, idk what to make it out of yet lol. and imma go with the digital freq. so i can use it for more things...i found a similar setup with a better (best) reciever:
trans. http://www.spektrumrc.com/Products/Default.aspx?ProdId=SPMR5510
rec. http://www.spektrumrc.com/Products/Default.aspx?ProdID=SPMAR6300

when they say that these things are rated at 9.4v, is 11.1v 3c lipo going to fry it? or is that its output?
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 8:54 pm

is that the only one, or are there a few specific ones that always failsafe properly?
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Cody
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 9:01 pm

You should actually look into the failsafe rules for ants at your local competition. I have in my head that ants don't have to failsafe some places but I could be wrong.

The link you posted for ESC was the same link you posted for the radio. I'm guessing you meant this ESC http://www.fingertechrobotics.com/proddetail.php?prod=ft-tinyESCv2

Those are probably the best ant drive ESC available. Those will NOT work for you brushless axi though
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 9:46 pm

yea thats what i was gonna use for the microgears, crap..i didnt post it in the one right above the long list...its a $28 10 amp from eflite...

ah found it http://www.e-fliterc.com/Products/Default.aspx?ProdID=EFLA1010
this one will work for it, right?
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Don Doerfler
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 9:51 pm

Camden W wrote:
yea thats what i was gonna use for the microgears, crap..i didnt post it in the one right above the long list...its a $28 10 amp from eflite...

ah found it http://www.e-fliterc.com/Products/Default.aspx?ProdID=EFLA1010
this one will work for it, right?

ya that will work
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Camden W
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PostSubject: Re: Camden's confoundations   Sun May 08, 2011 11:13 pm



here is my first beginning sketch of an actual size drawing. 3DS max is a little extreme for me atm lol, and it's amazing how making my drawing bigger allows the little details. the box in the center is a fingertech tiny on its side...crap lol wrong type of wiring, blegh. i'll redraw that part.

anyway, my real question is about the frame supports taking up the rest of the space. i think im going to use hex extenders w/ 1 end being a screw (top part)
but where should i put the washers and how large/thick should they be? and how thick should the screws attaching from the bottom be?
i plan to have 6 such supports to help hold the center bearing where the weapon is going to attach.

each blue square represents 1/4" and all the numbers are in inches
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Evan Steeves
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PostSubject: Re: Camden's confoundations   Mon May 09, 2011 12:27 am

I would space them out in a hexagonal pattern if you plan to use six supports and the drawing makes alot more sense in scale now cheers
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Camden W
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PostSubject: Re: Camden's confoundations   Mon May 09, 2011 4:16 pm

this is the completed sketch of my battlebot, including wires. advice would be nice

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Koolaid64
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PostSubject: Re: Camden's confoundations   Mon May 09, 2011 4:30 pm

larger weapon pulley, you want at least a 2:1 ratio with a fbs just because your going to be stressing the motor
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Camden W
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PostSubject: Re: Camden's confoundations   Mon May 09, 2011 9:33 pm

I was planning to go with a 2 or 3:1 ratio depending on the motor's rpm, i want want around 5k for the weapon itself. i've decided on 1/4" shaft for the weapon mount...is that strong enough to withstand a chuck at a wall you think? and for the (ended up to be 5) spacers, idk what thread size i should use,
d'you think 3/16" dia 2-50 bolts are sufficient?

also, i have some crude weight measurements. +or- 10g
these are overestimates
all electronic stuff ~175g including wires and connectors
top and bottom plating: 75g for 1/8" UHMW H.O.T, 150g for 1/4"
nuts/bolts/washers/electronic mounts ~50g?
that leaves me with a 150g weapon if i go with 1/8" uhmw. 75g for 1/4"
what should i do?
Is 1/3 total weight average for a FBS weapon?
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Camden W
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PostSubject: Re: Camden's confoundations   Mon May 09, 2011 9:41 pm

edit on screw size: 3/8" 1/4-20 stainless flat undercut
http://www.mcmaster.com/#machine-screw-fasteners/=c8iyka
#91781A535
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Camden W
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PostSubject: Re: Camden's confoundations   Mon May 09, 2011 10:00 pm

double edit...

91781A619
1/2" long 3/8-16 thread
10 pack
arrgh...the heads are almost 3/4" wide lol...time to do more searching
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Camden W
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PostSubject: Re: Camden's confoundations   Mon May 09, 2011 10:42 pm

ok, here is what i think i might get. the o rings could double as vibration reducers
98070A330
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Camden W
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PostSubject: Re: Camden's confoundations   Mon May 09, 2011 10:58 pm

and here are the spacers
http://www.mcmaster.com/#91115a197/=c8jyk4

i think that'll hold, eh?
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Camden W
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PostSubject: Re: Camden's confoundations   Thu May 12, 2011 9:08 pm

my design stinks...that battery is too dang big. do you guys think it would be better to have 2 3c lipos in parallel or 3 1c's in series? or is series/parallel switched? i always get em mixed up...
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