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Small robots - Barton Robotics - NSW
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Dylon



Joined: 09 Nov 2006
Posts: 631
Location: Newcastle, NSW


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everything i have atm weighs 65g, so thats brushless, esc, mixer, 2s lipo, rx and 2 wheels and if the servos weigh the 5g like they say thats 75g lol
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Barton Robotics Youtube Channel:
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Barton Robotics Facebook Page:
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Post Wed Jun 08, 2011 2:08 pm 
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Nick
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Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW


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Get Jake to CNC the antweight shell; you could vary the shell thickness so the teeth had a thicker wall to screw into.

Post Wed Jun 08, 2011 2:09 pm 
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Dylon



Joined: 09 Nov 2006
Posts: 631
Location: Newcastle, NSW


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mmm cnc would be purdy, with that would just have the teeth and shell as 1 piece
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Barton Robotics Youtube Channel:
https://www.youtube.com/user/dyl30

Barton Robotics Facebook Page:
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Post Wed Jun 08, 2011 2:11 pm 
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Knightrous
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Joined: 15 Jun 2004
Posts: 8511
Location: NSW


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Aluminium teeth will last less then one battle Very Happy
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Post Wed Jun 08, 2011 2:14 pm 
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Dylon



Joined: 09 Nov 2006
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Location: Newcastle, NSW


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true.. well yeah slightly thicker wall where the teeth are would be good though
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Barton Robotics Youtube Channel:
https://www.youtube.com/user/dyl30

Barton Robotics Facebook Page:
https://www.facebook.com/BartonRobotics

Post Wed Jun 08, 2011 2:21 pm 
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Nick
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Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW


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CNC it from titanium or tool steel Laughing

Post Wed Jun 08, 2011 3:38 pm 
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Knightrous
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Joined: 15 Jun 2004
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Location: NSW


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quote:
Originally posted by Nick:
CNC it from titanium or tool steel Laughing

Good luck with that in an antweight Razz
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Post Wed Jun 08, 2011 3:39 pm 
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Nick
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Joined: 16 Jun 2004
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Location: Sydney, NSW


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Depends how thin you can make the shell - I never said it would be easy!

Post Wed Jun 08, 2011 3:49 pm 
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Jaemus
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Joined: 01 Apr 2009
Posts: 2674
Location: NSW


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we've been using 9 gram servos which are about 12g with the leads

HXT900's
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<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

Post Wed Jun 08, 2011 6:26 pm 
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Dylon



Joined: 09 Nov 2006
Posts: 631
Location: Newcastle, NSW


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1 cut in half saucepan uhh i mean beetleweight shell >_>



all the reflections make an illusion oooo Confused

planning with the left over stainless to make some rings and weld them or something to the inside of the shell to increase the wall thickness. and do note the top of the shell is about 2mm aluminium sandwiched between 2 bits of stainless,

would have had some of the frame done but i got called into work last minute so thatll be for either tomorrow or saturday, gots me another sheet of polycarb so all good to go
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Barton Robotics Youtube Channel:
https://www.youtube.com/user/dyl30

Barton Robotics Facebook Page:
https://www.facebook.com/BartonRobotics

Post Fri Jun 10, 2011 4:51 am 
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Dylon



Joined: 09 Nov 2006
Posts: 631
Location: Newcastle, NSW


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frames all cut out and legoed together will add screws on monday and finish the rest off, hopefully hobbyking order will be here early next week so can give it a test spin without teeth.




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Barton Robotics Youtube Channel:
https://www.youtube.com/user/dyl30

Barton Robotics Facebook Page:
https://www.facebook.com/BartonRobotics

Post Sat Jun 11, 2011 6:47 pm 
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Jaemus
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Joined: 01 Apr 2009
Posts: 2674
Location: NSW


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what have you been cutting your polycarb out with? a scroll saw?
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<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

Post Mon Jun 13, 2011 3:51 pm 
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dyrodium
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Joined: 24 Aug 2004
Posts: 6476
Location: Sydney


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Will be a shame to see that sexy frame explode. Razz
Nice idea with the bearings hmm will help you a lot. What burshless and friction wheel are you going with?
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( •_•)

( •_•)>⌐■-■

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YEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH

Post Mon Jun 13, 2011 7:17 pm 
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marto
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Joined: 08 Jul 2004
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Location: Brisbane, QLD


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The bearings will help a lot ... until the shell gets even slightly out of shape. Really need a lip on it
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Steven Martin
Twisted Constructions
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Post Mon Jun 13, 2011 8:08 pm 
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Dylon



Joined: 09 Nov 2006
Posts: 631
Location: Newcastle, NSW


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i made something even better then a scroll saw.. annoying thing with them you can only cut so far before hitting the arm that holds the top of the blade.. so i basically made a table out of mdf and bolted a jigsaw to the bottom and bought extra long blades to cut thicker stuff.. ill grab a photo in a sec when the camera batteries charge.

the brushless i bought i got today and while its so cute its alot smaller then i realised.. like smaller then the motor i use in the antweight so will either give it a try and see what happens or get a different one..

anyway dunno if anything makes sense have had like hour and a half sleep and been at work for 12 hours im going to bed
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Barton Robotics Youtube Channel:
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Barton Robotics Facebook Page:
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Post Tue Jun 14, 2011 6:06 pm 
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