www.robowars.org

RoboWars Australia Forum Index -> Builders Reports

Sportsman Robots - Barton Robotics - NSW
Goto page Previous  1, 2, 3, 4, 5  Next

Post new topic   Reply to topic
  Author    Thread
Dylon



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


 Reply with quote  

Been busy, I'll just leave this here Wink





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

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

Post Sat Apr 18, 2015 2:30 pm 
 View user's profile Send private message Visit poster's website
miles&Jules
Experienced Roboteer


Joined: 19 May 2010
Posts: 3970
Location: ipswich QLD


 Reply with quote  

Ultra sexy - how does the 775 go with self righting? Very Happy
_________________
Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Post Sat Apr 18, 2015 3:09 pm 
 View user's profile Send private message Send e-mail Visit poster's website
Dylon



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


 Reply with quote  

terrible haha as you would know Razz
I suspect that jaycars specs are somewhat off the mark.
Spent some time googling somewhere to source a more power motor around the same size of a 775 but found zero results within Australia (for cheap anyway).
Bit annoying as i would have like to utilize the TZ85 that i have spare instead had to order a brushless setup which should be here monday so can test that then and post up a video etc
_________________
Barton Robotics Youtube Channel:
https://www.youtube.com/user/dyl30

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

Post Sat Apr 18, 2015 4:20 pm 
 View user's profile Send private message Visit poster's website
miles&Jules
Experienced Roboteer


Joined: 19 May 2010
Posts: 3970
Location: ipswich QLD


 Reply with quote  

yep i was sup prised to the brushless gave some serious power compared to the 775
_________________
Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Post Sat Apr 18, 2015 7:34 pm 
 View user's profile Send private message Send e-mail Visit poster's website
Ellis



Joined: 21 Jul 2012
Posts: 129
Location: Shopshire, England


 Reply with quote  

That looks fantastic! Hooray Sewer Snake style 30lber bots! I've built two with this style weapon and it's really good fun. Forgive the namedrop/image spam, but this is T3, the latest:

http://i.imgur.com/HQvWv6N.jpg

http://i.imgur.com/wTosdZg.jpg

Can't wait to see your test videos. Looks like a really slick machine, I'm sure it'll be very effective. I had forks on the predecessor to the above and it was by far more effective, it just didn't enjoy spinners in that form.

Looks to me like all the motors don't have their magnet rings around them, is that for a reason? China puts them on to increase torque I believe. Might make a notable difference to both the drive and weapon.

Awesome stuff.
_________________
Online store - www.ranglebox.com
Pulsar and friends.

Post Sat Apr 18, 2015 8:31 pm 
 View user's profile Send private message
Dylon



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


 Reply with quote  

cheers.. always liked how wildly sewer snakes lifter flailed about yet also worked effectively and something different to a conventional lifter.
Also first attempt at a 4wd setup. no idea if itll work efficiently all trial and error.

Yeah i don't know i have just always taken the rings off to put the mounts on and never bothered to put them back on.. didn't think it would make a significant enough impact and just took up weight. could be worth a try if i find i have some spare weight.. already ordered a brushless setup so bit late for the lifter drive but ah well
_________________
Barton Robotics Youtube Channel:
https://www.youtube.com/user/dyl30

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

Post Sat Apr 18, 2015 11:14 pm 
 View user's profile Send private message Visit poster's website
Ellis



Joined: 21 Jul 2012
Posts: 129
Location: Shopshire, England


 Reply with quote  

Did exactly the same for a long time before a guy at an event in Germany made a very good point: China wouldn't bother with the manufacturing cost and effort of installing them on motors of this kind if they weren't worth it.

As you've got just two 550s for the drive any gain in torque, if you have the weight, is probably worth it. You could run the 30a Botbitz on the drive to save a few grams if it gets that fine?
_________________
Online store - www.ranglebox.com
Pulsar and friends.

Post Sun Apr 19, 2015 12:00 am 
 View user's profile Send private message
Glen
Experienced Roboteer


Joined: 16 Jun 2004
Posts: 9479
Location: Where you least expect


 Reply with quote  

Was gonna say its very like tormenta (#namedrop) that worked pretty dang well. Also Ellis have you got some pics of how the wheels are made? Meant to ogle them but didn't get the chance lol.

Those 775s are very hot wound from banebots, Would burn them up quick on that lifter i reckon. Aaron and Miles' brushless winch setup seemed to work good last time.

Curious point on the flux rings, they would increase torque (kt) and lower speed (kv) + raise efficiency on account of the increased magnetic flux, but the 775 ones are way heavy, 150g for both.

Would be interesting for someone to quantify the difference. There is quite a lot of magnetic leakage through the banebots 775 without the ring...
_________________
www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz

Post Sun Apr 19, 2015 12:34 am 
 View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
Ellis



Joined: 21 Jul 2012
Posts: 129
Location: Shopshire, England


 Reply with quote  

I machined them from billet HDPE. Made a little Imgur album: http://imgur.com/a/H0pE3
_________________
Online store - www.ranglebox.com
Pulsar and friends.

Post Sun Apr 19, 2015 1:31 am 
 View user's profile Send private message
miles&Jules
Experienced Roboteer


Joined: 19 May 2010
Posts: 3970
Location: ipswich QLD


 Reply with quote  

Hey dylon - what voltage you running? The kmart drills we used were all turned to flames on 6 cell - we sticking with 4s fror drills now
_________________
Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Post Sun Apr 19, 2015 11:06 am 
 View user's profile Send private message Send e-mail Visit poster's website
Dylon



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


 Reply with quote  

if i can dig the rings out of the bin ill do some tests, curious to see hmm..

running 5 cell, haven't had the motors themselves burn out but with the extra load of the chain drive could well happen, the pins on the carrier plates are what fail for me but i am also doing another little experiment with them, there is method to my madness having the robot done 6 weeks before the event Razz


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

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

Post Sun Apr 19, 2015 12:30 pm 
 View user's profile Send private message Visit poster's website
miles&Jules
Experienced Roboteer


Joined: 19 May 2010
Posts: 3970
Location: ipswich QLD


 Reply with quote  

Fancy…we welded the shaft on for our winch hack.
_________________
Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Post Sun Apr 19, 2015 2:50 pm 
 View user's profile Send private message Send e-mail Visit poster's website
Dylon



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


 Reply with quote  

i ended up going through 2 winch gearboxes when i was trying to get it all to work... Haven't really been reading much on the forum lately so i hadn't seen the winch thread or your latest stuff and the first gearbox i welded to the carrier plate like i noticed you did in winch tutorial thread and i found with the winch I'm using that it skipped heaps of reduction to the point i could turn the gearbox by hand >_>
2nd attempt i did exactly what you did with new Kojack and welded a shaft to the output gear and it just floats in the spline supported by a bearing on the outer side
_________________
Barton Robotics Youtube Channel:
https://www.youtube.com/user/dyl30

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

Post Sun Apr 19, 2015 8:29 pm 
 View user's profile Send private message Visit poster's website
Glen
Experienced Roboteer


Joined: 16 Jun 2004
Posts: 9479
Location: Where you least expect


 Reply with quote  

quote:
Originally posted by Ellis:
I machined them from billet HDPE. Made a little Imgur album: http://imgur.com/a/H0pE3


Epic! Thining of doing the same thing as wheels are just getting harder to obtain for a good price.. is that bike tyre? How did you get it so flat? Or did you find a really wide one then cut the sidewall off.

+ Nice trepanning tool. Made a similar thing for some non robot related work and found that shape worked the best as well.

Do those even fit in the gearbox Dylon? There isn't much clearance front what i can recall and the middle carrier plate has to get thinned down for the andrew mod output stage to fit even without the bolt heads sticking up. Looks nice though Very Happy
_________________
www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz

Post Mon Apr 20, 2015 2:26 am 
 View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
maddox



Joined: 21 Dec 2006
Posts: 779
Location: Belgium


 Reply with quote  

Those HDPE wheels, I did that in the past for all our machines, but since a year, we went to the worn RC wheels from Leo's cars.

And yes, that's bike tyre. Just cut off the sidewalls, and flatten it on the wheel with enough screws.

Post Mon Apr 20, 2015 2:54 am 
 View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
  Display posts from previous:      

Forum Jump:
Jump to:  

Post new topic   Reply to topic
Page 3 of 5

Goto page Previous  1, 2, 3, 4, 5  Next

Forum Rules:
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

 

Last Thread | Next Thread  >
Powered by phpBB: © 2001 phpBB Group
millenniumFalcon Template By Vereor.