First build-Team Terra-QLD Goto page 1, 2, 3, 4Next
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RedKnight
Joined: 22 May 2015
Posts: 35
Location: Townsville QLD
First build-Team Terra-QLD
ok so i have started to think about some bot designs and i have some cool ideas i think but first i think i need to focus on the functionality of my bot i have watched the tutorials on how to use cordless drill motors and i think i can do that pretty easy, then i noticed in my back shed i have a couple of indoor fans that i dont use any more do you think i could use the motors from these or maby there wouldn't be enough torque what does everyone think.
Sat May 23, 2015 10:20 am
RedKnight
Joined: 22 May 2015
Posts: 35
Location: Townsville QLD
You will need to upload a picture to some internet sharing thing. Then you can use the img tag. Its a bit shit but I think aaron has done a tutorial somewhere.
On imgur there is a button called embed codes. If you pick the BB code one you can actually put the pic embedded. See below
As for the motors I reckon they would need some sort of gearing. Car fan motors used to be a prime candidate for a weapon motor back in the day. Although indoor fans are they 240V or 12V?
Joined: 22 May 2015
Posts: 35
Location: Townsville QLD
im really new to all this so thank you for your help they are 240v but to be honest im not sure what that means and what do you mean by gearing
Sorry if im wasting your time i should probly do some research
Sat May 23, 2015 11:23 am
maddox
Joined: 21 Dec 2006
Posts: 786
Location: Belgium
240V meant 240 volt, or home main power, AC. Not useable in our machines.
Gearing. Most motors have a high rpm and low torque. You can exchange rpm and torque by gearing the setup.
For example. Most batteriedrills use a planetary gearbox of about 20-1 (some 16-1, others 36-1), meaning the motor RPM is divided by 20, and torque multiplied by 20.
And we're willing to give the information if asked in a pleasant or fun way.
Sat May 23, 2015 11:30 am
RedKnight
Joined: 22 May 2015
Posts: 35
Location: Townsville QLD
Oh right thats why when i hooked it up to a batteries nothing happened haha thank you very much i might go buy some cordless drills
i was thinking for my weapon either a flipper or a spiner what would you recommend for a beginner
Sat May 23, 2015 11:47 am
maddox
Joined: 21 Dec 2006
Posts: 786
Location: Belgium
For a starter on a low budget, a ramming box or wedge. Just to get the experience.
For me, it was easy to go for a flipper , as I had experience from the heavies and the tools to make full custom setups.
Now I'm trying spinners. And it seems to be a problem to get those reliable.
Sat May 23, 2015 12:02 pm
RedKnight
Joined: 22 May 2015
Posts: 35
Location: Townsville QLD
ok are these allowed to compete in the nats in October because at the moment that is my goal to be ready in time?for a flipper is a pneumatic piston the best way to go does hobby king or bot bits sell these?
Sat May 23, 2015 12:11 pm
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
You will have to get the pneumatic ram from eBay or an engineering shop. _________________ Australian 2015 Featherweight champion
UK 2016 Gladiator champion
Sat May 23, 2015 12:36 pm
RedKnight
Joined: 22 May 2015
Posts: 35
Location: Townsville QLD
Could someone please direct me to the bot requirement for competing or even just outlie them for me thanks guys you have all been very helpfull
Sat May 23, 2015 12:40 pm
Daniel Experienced Roboteer
Joined: 30 Aug 2005
Posts: 2729
Location: Gold Coast
I've recently started collecting pneumatic parts for a new hammer robot. Here's some on the parts that I've got:
Paintball CO2 tanks are a bit harder to find cheaply
Sat May 23, 2015 8:11 pm
RedKnight
Joined: 22 May 2015
Posts: 35
Location: Townsville QLD
thanks mate thats a big help ill have to do some research on how to put it all together
i did a few sketches last night still cant decide on a flipper or a ramming bot
Sun May 24, 2015 8:54 am
seanet1310
Joined: 08 Nov 2006
Posts: 1265
Location: Adelaide
quote:Originally posted by RedKnight:
Could someone please direct me to the bot requirement for competing or even just outlie them for me thanks guys you have all been very helpfull
Compliant with the rules. Controlled motion is a must. Ability to failsafe if transmitter signal is lost (typically done in the electronic speed controller), a power light, ability to power on robot without opening it up (switch or removable link is typically the way) and within the weight limit.
Last time I checked (it has been a while) we used the RFL rules as a basis for the nationals. No flame weapons or internal combustion engines. The main division is the 13.6kg featherweight. If you have a moving weapon there must be a way to lock it safely from activating in the pits. (The sportsman bit apples to the NSW Vivid event next week)
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