Joined: 09 Jan 2009
Posts: 518
Location: Wantirna, Melbourne
How to make a drum
http://www.youtube.com/user/crustydemonsully
mine is failing
could someone please tell me how to make a successful and strong drum and where to get the parts from (preferably melbourne)
btw i also have very basic tools (dremel,drill,hammer,friends drillpress and bench grinder and welder) so pleez include some easy methods aswell
my drum is a 65mm square pipe (bunnings) with the red wheels (bunnings) cut to fit inside the ends and with skateboard ball-bearings (ozmosis) pressed into them. it is running on a 5/16 threaded rod (bunnings) with 5/16 bolts (bunnings) as teeth.
dats all i will sai 4 now coz i got 2 catch some Z's, im in america on a tour called G'Day USA, quite tiring.
anyways
catch u guys l8r
Fri Jan 09, 2009 5:02 pm
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
Making a successful drum with virtually no tools and a low budget is challenging! I don't know any suppliers down in Melbourne, but in general you should go for much stronger bearings, metal end caps if possible (you have a welder at least) and round tube for the body - weight for weight, round tube is much stronger than square tube.
The other area to look at is replacing the threaded rod, which is very soft steel, with something stronger. you can get more strength without extra weight by using tube for the axle. IE a 1" tube that weighs less than a 1/2" solid rod will be MUCH stiffer. Google steel suppliers in Melbourne and then phone around.
Fri Jan 09, 2009 5:36 pm
NMO Experienced Roboteer
Joined: 16 Jun 2004
Posts: 486
Location: Melbourne
Hi Shreddy.
We're in the middle of building a drum bot atm and would be happy to give you some advise, Strangly enough we also live in Wantirna and Mat and I are doing our final build at my place on Sunday to get ready for robowars. Your more than welcome to drop by if you want.
Neweyn
Fri Jan 09, 2009 7:17 pm
shreddy
Joined: 09 Jan 2009
Posts: 518
Location: Wantirna, Melbourne
thanks for the advise guys and as much as i would love to be there this weekend, im in america atm and i get back on the 17th so i might only be turning up on the second day of the event
Sun Jan 11, 2009 5:23 pm
shreddy
Joined: 09 Jan 2009
Posts: 518
Location: Wantirna, Melbourne
hey neweyn, do you test ur bots down at templeton reserve as well because that is where i filmed my tests
Sun Jan 11, 2009 5:25 pm
Damien (not Damian)
Joined: 15 Sep 2005
Posts: 327
Location: The other side of The Wall...Melbourne
Does anyone know if using screws as teeth like
this
(second image from the top) would work in a feather weight, friction-driven from a drill motor? So, would the screw teeth bend, crack, dent, etc. _________________ It seemed like a good idea on paper...
Fri Jan 16, 2009 9:27 pm
timmeh Experienced Roboteer
Joined: 20 Jul 2004
Posts: 2523
Location: Victoria
Wood screws would most likely burr over you would have to use thick real "steel" screws not those cheapo gold or galv screws.
Why not weld some spikes on or use some high tensile bolts all the way threw with extra thread pokeing out and sharpen them? _________________ Tim Team Reaper.
Fri Jan 16, 2009 9:36 pm
Damien (not Damian)
Joined: 15 Sep 2005
Posts: 327
Location: The other side of The Wall...Melbourne
Well, anyone who's seen the 2008 rumble would know that I have bad experience with bolt spikes...
And I liked this idea because I don't have a welder. So those Zenith zinc bolts probably wouldn't work? _________________ It seemed like a good idea on paper...
Fri Jan 16, 2009 9:42 pm
timmeh Experienced Roboteer
Joined: 20 Jul 2004
Posts: 2523
Location: Victoria
id buy some 6 or 8mm steel screws the ones that come in a bag and there all oiled up to stop em rusting then you know there real steel.
You could maby tek screw a steel strip onto your drum. _________________ Tim Team Reaper.
Fri Jan 16, 2009 9:49 pm
Damien (not Damian)
Joined: 15 Sep 2005
Posts: 327
Location: The other side of The Wall...Melbourne
I'll assume I can't get these at Bunnings then...
Where did you get yours? _________________ It seemed like a good idea on paper...
Fri Jan 16, 2009 11:31 pm
timmeh Experienced Roboteer
Joined: 20 Jul 2004
Posts: 2523
Location: Victoria
Bunnings _________________ Tim Team Reaper.
Sat Jan 17, 2009 7:28 am
Damien (not Damian)
Joined: 15 Sep 2005
Posts: 327
Location: The other side of The Wall...Melbourne
I knew that, I was just seeing if you did... _________________ It seemed like a good idea on paper...
Sat Jan 17, 2009 10:56 am
shreddy
Joined: 09 Jan 2009
Posts: 518
Location: Wantirna, Melbourne
the builders report 4 it is now up!
Mon Jan 19, 2009 2:30 pm
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