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Philip
Experienced Roboteer


Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane


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Yes it is. How did you recognise that?
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So even the rain that falls isn't actually going to fill our dams and our river systems

Post Mon Aug 17, 2015 7:00 pm 
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miles&Jules
Experienced Roboteer


Joined: 19 May 2010
Posts: 3973
Location: ipswich QLD


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They are great for brushless motor shaft replacement…..every time they have throwout day on the streets, we grab em for their rods.
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Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Post Mon Aug 17, 2015 8:20 pm 
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Philip
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Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane


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Just broke the lifter while testing. Aussie Battler might be just a lifter and not a grabber. I am worried it might be too difficult to make a reliable mechanism at this late stage.
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So even the rain that falls isn't actually going to fill our dams and our river systems

Post Tue Sep 22, 2015 4:49 am 
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Knightrous
Site Admin


Joined: 15 Jun 2004
Posts: 8509
Location: NSW


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How did it break?
Any photos of the mechanism?
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Team Knightrous

Post Tue Sep 22, 2015 8:16 am 
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Philip
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Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane


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I was testing the self righting and I broke the aluminium. I don't have room to make it thicker.

You can basically see it here. There is a hinge at the back.


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So even the rain that falls isn't actually going to fill our dams and our river systems

Post Tue Sep 22, 2015 8:20 pm 
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miles&Jules
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Joined: 19 May 2010
Posts: 3973
Location: ipswich QLD


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Apparently you can braise ali with special rods…that might save you making it again.
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Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Post Wed Sep 23, 2015 12:07 am 
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Philip
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Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane


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Thanks. I could try to save this design, but in the time and space remaining I don't think I can get it to be reliable. Imagine if Citizen Flips throws me and I land upside down or a saw blade catches my upper arm.
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So even the rain that falls isn't actually going to fill our dams and our river systems

Post Wed Sep 23, 2015 2:36 am 
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Philip
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Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane


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Aussie Battler has an Aussie battery holder.



I just need to rebuild the arm and then it is finished.


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So even the rain that falls isn't actually going to fill our dams and our river systems

Post Fri Sep 25, 2015 3:13 am 
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marto
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Joined: 08 Jul 2004
Posts: 5459
Location: Brisbane, QLD


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It is far less cool like that.
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Steven Martin
Twisted Constructions
http://www.botbitz.com

Post Fri Sep 25, 2015 9:55 am 
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Philip
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Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane


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Aussie Battler was far less cool without his upper jaw but half of the sportsman class were spinners. I did try several ideas to make the upper arm stronger, but that would just transfer the force further down the chain. Anyway, the event.

Aussie Battler v Hydra. There was one robot I did not want to meet, Hydra. Hydra has a full width drum at the front. I thought the drum could catch on my lifting arm and smash the plastic internals of my linear actuator. So I was sad to see that was my first fight.

How do you fight a full width drum spinner? Rob is an experienced driver and would not let me get around him so the only option was to charge in from the start. Aussie Battler pushed Hydra around a bit and got in a couple of lifts. Hydra gave Aussie Battler some nice tooth marks. Aussie Battler took the win.

Aussie Battler v Slinky. Miles made an interesting robot. It is a spring powered flipper. Slinky wasn't quite working as well as Miles would have liked but this was still a very tough fight. Aussie Battler was lucky to get the win.

Aussie battler v Berserker. The fight with Berserker was going well enough until Aussie Battler's battery connector fell out. Doh. Win to Berserker.

Aussie Battler v Skeletor. Skeletor had taken some damage during the day and Gary had done very well to keep his machines running. Skeletor is massive so Aussie Battler had no hope of turning it over. Early in the fight, Aussie Battler lost a tyre. (mountain bike tread on cutting board) The tyre was half on and putting a lot of drag on the left side. It took a lot of correction to make Aussie Battler drive in any direction. I decided to keep in close to Skeletor rather than get back and ram him. Aussie Battler got in some tiny lifts and was awarded the win.

Aussie Battler v Citizen Flips. Oh no. A well constructed robot that was still running well and driven by a brilliant driver. Oh no. Aussie Battler is small and sits nicely on Citizen Flips' flipping arm. My only hope was to out drive him and not get flipped for three minutes. Yeah right. We dogged for a while, but Citizen Flips got under Aussie Battler and threw it into the air. Aussie Battler landed propped against the wall. (Anyone remember the Marauder v Cobra fight?) Citizen Flips wins.

Steve did a brilliant job with the event. It ran to schedule. All of the roboteers were quick to recharge and repair their machines to keep everything rolling along.

I will probably build something else next time as aluminium and parts that stick out are no good in a spinner environment.

Some thoughts for next time. Finnish building before the morning of the event. Test drive before arriving at the competition. Make the battery bay easier to access and get a spare battery. No cutting board wheels.
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So even the rain that falls isn't actually going to fill our dams and our river systems

Post Mon Oct 12, 2015 2:49 am 
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miles&Jules
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Joined: 19 May 2010
Posts: 3973
Location: ipswich QLD


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Hey Phillip -what servos do you recommend for ant flippers?
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Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Post Fri Oct 28, 2016 9:35 pm 
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Philip
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Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane


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Corona digital servos. Maybe this one https://hobbyking.com/en_us/corona-ds-843mg-digital-high-torque-micro-servo-4-8kg-0-10sec-8-5g.html I will have a look in the shed after sunrise. Edit DS919MG https://hobbyking.com/en_us/corona-919mg-digital-metal-gear-servo-1-7kg-0-06sec-12g.html

Digital servos are better than analogue servos even if they quote the same torque.

I like to work on 300 grams of weight on the tip of my lifter and work through the system back to the torque required at the servo.
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So even the rain that falls isn't actually going to fill our dams and our river systems

Post Sun Oct 30, 2016 4:25 am 
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miles&Jules
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Joined: 19 May 2010
Posts: 3973
Location: ipswich QLD


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Oh they look cool- thanks revealing your secrets-do you power them just from the reciever or from battery?
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Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Post Sun Oct 30, 2016 9:47 am 
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Philip
Experienced Roboteer


Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane


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I power them from a voltage regulator. The B328 does not have a strong enough voltage regulator to run them off the receiver. If you are using a BotBitz speedo, you will have enough power to not need an additional regulator. Alternatively, you could use a high voltage servo and poewr it straight from the battery.
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So even the rain that falls isn't actually going to fill our dams and our river systems

Post Mon Oct 31, 2016 4:50 am 
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miles&Jules
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Joined: 19 May 2010
Posts: 3973
Location: ipswich QLD


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I was just planning to plug em into the hk reciever? Running it off its on esc would be a lot heavier ?
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Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Post Mon Oct 31, 2016 9:53 am 
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