So apparenty there was a rain delay on a baseball game on ESPN: The Ocho a while ago so the NHRL segment was pushed back to 11:50pm :( HOWEVER - Looks like they will rebroadcast it twice, Aug 3rd 2pm, and Aug 5th 9pm.
That's a good question. Honestly it's hard to say. The minibot ban itself was very consequential as many teams had intended to use them for an advantage. We learned kinda last minute about the bonus making it very costly to redesign a whole robot to optimize for the new limit so I think most competitors either added more weight in armor and replaceable parts or had some slightly heavier weapons or something like that. That said some robots were designed from the start to have a mini-bot and were overweight without it like Knock Off White and Chainsaw Kitty. One really contentious one was Dutch Oven which is massive and complex and like KOW it uses both the nontraditional locomotion bonus and minibot bonus to have a 5lb multibot normally. They have a minibot with an igniter on it in case the igniter on the main bot fails and were not allowed to use that mini. I know Beeforce was also supposed to have a mini to help tee up opponents and weren't allowed to use it. Sombra also was just below 3.3lbs as they had some improvements made just for this competition though I don't what. I am sure that the last minute change affected things but it's hard to say for sure to what degree. It's just pure speculation to say the outcome of a specific fight would be different with or without a mini or additional armor.
oh thank the gods this is why they cut half the tourney from live stream! its a net positive though im shocked they only want a half hour when a whole event would definitely be worth broadcasting
Hi, question here: What esc do you use for the weapon on subtraction/division. the weapon motor esc i use has been discontinued. Or if you want/could recommend one, i use a D2822 1100Kv motor
I didn't think Division would do as well and haven't had much time to work on it. Subtraction was a bit easier to get going in a short time and I knew it could at least put on a good show!
On a bot like subtraction, is it possible to incorporate an inverted aerofoil into the weapon design such that it would generate a little extra downwards force and counteract the gyroscopic forces, or is that just too complex/wouldn't provide enough lift to make a difference? My entirely not an engineer or builder brain is thinking that you're not making use of the middle section of the weapon most of the time as a weapon itself, so as long as you don't compromise the structural integrity I'd think it could add I touch more stability without adding weight, but maybe that's just too much to balance in the realm of machining and optimization
If you want to machine an airfoil into hardened steel to find out by all means be my guest! People have speculated about this before but it's not very practical.
@@JustCuzRoboticswhat’s stopping someone from making a 3D printed sleeve that goes over the weapon blade? (I suspect that the air resistance nullifies any actual practicality of the idea at these bots rpm’s but still a fun thought experiment
Bloodsport is different since it uses a dead shaft which doesn't spin for the weapon. Subtraction has a live shaft so the weapon and cone both spin. If I could use a self righting pole or static element that may actually be better. Bloodsport relies on its weapon torque to self right with a fixed pole but that means it doesn't need both drive sides working like Subtraction does.
Unfortunately there was a rain delay pushing it back by 51 minutes so if you recorded 11pm you would have missed it. Looks like they will rebroadcast it twice, Aug 3rd 2pm, and Aug 5th 9pm.
![Subtraction V2: Let's Get Metal [3 Pound Combat Robot]](http://i.ytimg.com/vi/liU7dNvU6Oc/mqdefault.jpg)
So apparenty there was a rain delay on a baseball game on ESPN: The Ocho a while ago so the NHRL segment was pushed back to 11:50pm :(
HOWEVER - Looks like they will rebroadcast it twice, Aug 3rd 2pm, and Aug 5th 9pm.
Banning mini bots Is smart
Honest question, how much of a difference do you think the weight bonus made in the overall competition?
That's a good question. Honestly it's hard to say. The minibot ban itself was very consequential as many teams had intended to use them for an advantage. We learned kinda last minute about the bonus making it very costly to redesign a whole robot to optimize for the new limit so I think most competitors either added more weight in armor and replaceable parts or had some slightly heavier weapons or something like that.
That said some robots were designed from the start to have a mini-bot and were overweight without it like Knock Off White and Chainsaw Kitty. One really contentious one was Dutch Oven which is massive and complex and like KOW it uses both the nontraditional locomotion bonus and minibot bonus to have a 5lb multibot normally. They have a minibot with an igniter on it in case the igniter on the main bot fails and were not allowed to use that mini. I know Beeforce was also supposed to have a mini to help tee up opponents and weren't allowed to use it. Sombra also was just below 3.3lbs as they had some improvements made just for this competition though I don't what. I am sure that the last minute change affected things but it's hard to say for sure to what degree. It's just pure speculation to say the outcome of a specific fight would be different with or without a mini or additional armor.
@@JustCuzRobotics great info! thanks for the response!!!!!
Chainsaw Kitty is a horrifying bot. I would have given up on the day after facing a bot like that.
Well I had a second spare robot so it wasn't too bad. All things considered the damage could have been way worse if I didn't tap out.
It’s so weird because it doesn’t look like itd be extra dangerous at first glance but it’s super planted and hits freaking hard
I'd like to see a design/build series for shrapnel mine.
You could put designs on the self righting cone such as a traffic cone or a wizards hat or something creative
TPU does not really stick or accept paint well but maybe I will give it a shot
@@JustCuzRobotics You could try stickers! They'll probably be destroyed but you could replace them after fights
Great fight with subtraction. The newest version looks amazing and functions very well.
I'd love to see sharpnel mine redesign videos!!
oh thank the gods this is why they cut half the tourney from live stream! its a net positive
though im shocked they only want a half hour when a whole event would definitely be worth broadcasting
I'm super impressed by that wheel's dodge in the CSK fight 😆
I still can't get over how cool the new Subtraction chassis is
HYPE
VERY HYYYYYPEE
Hi, question here: What esc do you use for the weapon on subtraction/division. the weapon motor esc i use has been discontinued.
Or if you want/could recommend one, i use a D2822 1100Kv motor
I use the Pariah 70A AM32 ESCs sold on my site
Amazing Video. How come you didnt take division with you?
I didn't think Division would do as well and haven't had much time to work on it. Subtraction was a bit easier to get going in a short time and I knew it could at least put on a good show!
Do you have a 12lb or 30lb robot? I don't remember seeing any videos of you with one
Its been a few years but I have built 12 and 30lb bots in the past
On a bot like subtraction, is it possible to incorporate an inverted aerofoil into the weapon design such that it would generate a little extra downwards force and counteract the gyroscopic forces, or is that just too complex/wouldn't provide enough lift to make a difference?
My entirely not an engineer or builder brain is thinking that you're not making use of the middle section of the weapon most of the time as a weapon itself, so as long as you don't compromise the structural integrity I'd think it could add I touch more stability without adding weight, but maybe that's just too much to balance in the realm of machining and optimization
If you want to machine an airfoil into hardened steel to find out by all means be my guest! People have speculated about this before but it's not very practical.
@@JustCuzRobotics haha fair enough, I have no capacity to do so, so I suppose the opportunity falls to some other poor soul!
@@JustCuzRoboticswhat’s stopping someone from making a 3D printed sleeve that goes over the weapon blade? (I suspect that the air resistance nullifies any actual practicality of the idea at these bots rpm’s but still a fun thought experiment
The fact that it would explode every time the blade hits anything, most likely.
15:54 It was at this moment that he knew, he F***ed up.
Great video, I was wondering if you've considered putting something like that cone for a future Bloodsport design?
Bloodsport is different since it uses a dead shaft which doesn't spin for the weapon. Subtraction has a live shaft so the weapon and cone both spin. If I could use a self righting pole or static element that may actually be better. Bloodsport relies on its weapon torque to self right with a fixed pole but that means it doesn't need both drive sides working like Subtraction does.
@@JustCuzRobotics Okay, that makes sense though I still think self-righting is an issue for Bloodsport
Trust me we on the team agree. It's something we are working on
sombra🔥🔥🔥
I just recorded that on yt tv
Unfortunately there was a rain delay pushing it back by 51 minutes so if you recorded 11pm you would have missed it. Looks like they will rebroadcast it twice, Aug 3rd 2pm, and Aug 5th 9pm.