Team Kaizen Build Diary

[McMullet]

Looks great! Nice work on the video too, I enjoyed the timelapse. Have you tried self-righting?

[Ocracoke]

Aww, thanks guys!

Whats the total weight of the FW now?

11.1kg as is so plenty of weight to put something really tasty on there.

Have you tried self-righting?

Yeah but it isn't playing ball. When I try to, the gears slip (you can hear it in the video at the end) so I think there is some work to do in getting it more secure but it shouldn't be a problem. If it comes down to it, I can always add in another stage to the gearbox. Switching to LiPo will also help if it needs it .

[Ocracoke]

Been busy today painting the body of Azriel and the side arms of Jibril, the weather was just too nice to pass up. The latter isn't ready to show until all the metal parts are done but Azriel is practically finished.

1592080024302.JPEG

Looks alright I think. The axe I've deliberately not painted as that is only a temporary affair until I can find someone able to cut a all metal one for me. I think I've fixed the slipping gear problem for now but I suspect it'll need redoing properly, the gear mesh but aren't meshed enough. I had the opposite problem on Jibril 1.x and wanted to avoid a repeat. Oh well... :P

Next stage is to get the metal panels made up for the Middleweight and start work on the new Scythe-Axe.

[McMullet]

Good work! Are the wheels from an RC car?

[Ocracoke]

Yeah, they are from a 1/10 or a 1/8 scale RC car with a 0 offset and the hub is bolted directly to the flat face of the wheel. They've proven surprisingly durable though I could do with new ones :P Nice and grippy though.

[RogueTwoRobots]

The axe I've deliberately not painted as that is only a temporary affair until I can find someone able to cut a all metal one for me

What material and specs? Happy to fabricate one if I've got suitable stock.

[Ocracoke]

What material and specs? Happy to fabricate one if I've got suitable stock.

I'll PM you as soon as I can.

[James Williams]

Azriel's looking great! Any chance it'll show up at Dojo next month? They're looking to host some smaller events ICYMI.

[Ocracoke]

Ooh, I wasn't made aware of this. If there is one on and there is room and it is safe to do so, yes, you'll see Azriel there. How do you sign up?

[Mr Manuva27]

They only announced it on Facebook last night.


Link to the post. Signup doc is linked in there .

[James Williams]

Here's a link to the FB page with all the details, in short they're holding 3 mini-dojo's over 3 Sundays next month with extra precautions. https://www.facebook.com/pg/RobodojoUK/posts/?ref=page_internal

[Ocracoke]

Excellent. I've signed up for Full Combat (as that is what Azriel is built for).

[Ocracoke]

Jibril
So the original plan for Jibril was to use a A28-150 motor running through a 23.39:1 gearbox for the Scythe. I've then come across, and bought, a A28-400 motor for the straight up power upgrade. The A28-150 motor can go into Azriel after Dojo.

At this stage, I really do need to learn how to drive a set of relays for backwards and forwards motion on the axe rather than use a speed controller, does anyone have a diagram of what is sometimes known as a "bang-bang" controller?

Azriel
Material for a front wedge plate has arrived so will be fitting and bending that over the next weekend, I understand Full Combat in Dojo can be quite violent (not that I don't think EXR events can be as well). I don't have the facility to make a metal one so HDPE it is.

Shu!
I've been thinking hard about wherever I want to continue with Shu! since its appalling performance at the BW championships. Ultimately, I am going to make a v3 as v2 never really got a fair outing, the speed controller exploded before the event so it could only go forwards and backwards.

Since it is a fun design, I am going to take the Ikari design and modify it for the BW class.

[team death]

Bang Bang controller ! Lucy !,-sounds like what I ran all my robots on up to series seven of Robot Wars

for both the drive and the weapons.

I never used a speed controller, just servos pulling on switches for full on full off power-always safe though

and is best suited to weapons, I was going to experiment with solid state relays but found an easy option-

speed controllers.

[Ocracoke]

SSRs is something I've thought about using but as far as speed controllers go, the problem is the amperage. The speed controller that drives it at the moment is a 80amp peak and the motors that drive the axe can easily ask well over 200a, especially on the strike. The other thing I am considering is that during the swing, on a speed controller, it is too slow. A relay should in theory solve that as well.