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MoonSet416
Joined: 25 Sep 2016
Posts: 436
Location: Sydney
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Robowars 2017 Day one:
1.Vs Reboot 2
My first ever match!
The first one or two hits were successful, however after that the small pulley got hammered into the weapon motor, jamming it and burning the ESC. The rest of the match was dominated by Reboot 2. I tried to use Contraption IIC as a wedge, however a few things prevented that from happening. First, the wheels are so soft that they foul up really quickly, losing some traction. (Should be changing to the black (harder) wheels in future versions.) Also, I adjusted the mixing program so that this thing turns hard to offset the gyro effect, so when the weapon got jammed the bot was turning too quickly for me to drive effectively.
Reboot, on the other hand, did a good job of keeping control of the match and attacking the sides of Contraption. Great work.
2.Vs The Toad
After the first fight, I had to fix the weapon. I thought the weapon bearing was shatta-ed but Nick pointed out that it was the weapon motor getting stuck. That helped me greatly and I was able to fix the problem temporarily by getting loctite into the pulley.
The fight certainly got the crowd excited. The first few time we managed to hit each other's weapon and due to both weapons spinning up at a good speed, nothing too dramatic happened. But then there's that one hit that I didn't quite understand and the Toad was on its head. I am suspecting that I hit one of the Toad's front panels, not its weapon.
Side note: the Toad's weapon design is ingenious! The slot looked stylish and it doubles as a carry handle.
I think the Toad could have had a much bigger chance of winning with a wedge that keeps its front to the ground.
3.Vs Berserker
Before this fight I noticed that the left side drivetrain was having problems: the wheel can't spin very smoothly, but I didn't have time to repair so I actually went into the fight when I can't even drive straight. I also learned that Berserker has modular weapons which are awesome but to me just before the match, they really got me stressed.
Berserker finally went with the wedge attachment. At the beginning of the match Berserker had its backside against me when I rushed in. The weapon was able to connect and did serious damage. I then kept pressure on Berserker, hitting its wheels a few times. Later, Berserker got stuck on one of its huge wheels and was knocked out.
After the fight the driver of Berserker (sorry forgot his name.) was kind enough to show me the damage done, and the gap on the armor was sort of crazy. The first hit was extremely close to the battery, but fortunately by the margin of millimeters we didn't have a lipo accident.
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Sat Aug 19, 2017 9:12 pm |
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MoonSet416
Joined: 25 Sep 2016
Posts: 436
Location: Sydney
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Robowars 2017 Day Two:
Vs Insanity
I just replaced the drive motor before this match, and the drivetrain seems up and running again... (To be fair, the broken motor actually drove just fine, but I didn't want to risk it.)
The first now or two hits into the fight was pretty good, however things went downhill from there. The weapon ESC stopped working and the weapon was spinning down. Unable to outdrive Insanity, I lost a whole lot of points on control as well as damage. It was in the middle of the fight when I realized that I had the weapon throttle on full the entire time. I then turned down the throttle and tried restarting the radio (that was the point where the commentator said I stopped momentarily), but even after restarting the weapon still didn't work. It was not until after the fight that the weapon spun up again. This is very weird because although I did have the radio on, the throttle was at zero. I turned the radio off to trigger failsafe as I saw smoke coming out. That was a well deserved win for Insanity.
When I pulled the bot apart in the pit, I saw a, of course, burnt up ESC. The rest of the bot seemed just fine but the weapon was certainly concerning. It just doesn't want to start after an impact.
And a large part of it was me driving poorly. I should have the throttle down whenever I reach enough RPM. I'm looking forward to modifying the radio so that the throttle automatically goes down when I let go. I'm just too used to throttles in video games.
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Mon Aug 21, 2017 1:29 am |
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MoonSet416
Joined: 25 Sep 2016
Posts: 436
Location: Sydney
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Drive motor update:
I have pretty much decided upon the propdrive 3536s, still calculating the needed KV. I'm planning to match the speed of the 775 brushed I'm using now so probably around 1000kv. (if I go with the 3" Colson I will go with 900kv)
One problem I had was that on the Hobbyking page, the dimensions of the motor were weird to say the least. The product info tab says it's like 90g, while the specs page says it's over 200g. Does anyone have some actual measurements of that motor? (e.g. diameter, distance from mounting face to end of rotor, etc)
EDIT: I was not reading the page carefully enough, the bigger dimensions are probably for the box that the motor comes in, and the actual motor data are at the lower part of the sheet. However, I am suspicious about the diameter provided on the page. When I saw the 3536s at the event they feel wider than the P60s, but the page says they are 35mm wide, 3mm less than the P60s. Some actual measurement would be very helpful to me, thanks in advance.
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Wed Aug 23, 2017 3:21 pm |
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