GeorgeR's robots

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Henwilled Antweight team
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Re: GeorgeR's robots

Post by Henwilled Antweight team » Thu Feb 28, 2019 6:27 pm

What brush less motor do you use on vampire?

GeorgeR
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Re: GeorgeR's robots

Post by GeorgeR » Fri Mar 01, 2019 8:04 pm

Henwilled Antweight team wrote:
Thu Feb 28, 2019 6:27 pm
What brush less motor do you use on vampire?
I use the LeTodar 2204 on both Vampire and RBMK. It's stupidly robust (5mm shaft!) and has a good selection of threaded holes to mount blades. It is a bit on the big/heavy side though - 28mm diameter, 20mm tall, 28g.

I like them because they're cheap (£7ish) and I still haven't managed to break one despite all the abuse.
Team Zero - AWS 58 Champion!
Zero - rambot - - Axiom - axebot - - Valkyrie - drum spinner
Vampire - horizontal spinner - - RBMK - quad spinner gyro walker

Henwilled Antweight team
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Re: GeorgeR's robots

Post by Henwilled Antweight team » Fri Mar 01, 2019 9:31 pm

Thanks, my old one weighed 30. The shaft size is the same. But I need to replace it for more torque. So, thanks I might change to them.

GeorgeR
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Re: GeorgeR's robots

Post by GeorgeR » Fri Mar 01, 2019 10:49 pm

If you want more torque (I guess you mean on initial spin-up) you would almost certainly be better off looking at your esc and its settings, or possibly the battery - any decent sized brushless should have more than enough.
Team Zero - AWS 58 Champion!
Zero - rambot - - Axiom - axebot - - Valkyrie - drum spinner
Vampire - horizontal spinner - - RBMK - quad spinner gyro walker

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FoxFire
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Re: GeorgeR's robots

Post by FoxFire » Mon Mar 04, 2019 1:11 am

Just want to say, your robots are really neat, I love the aesthetics of them - particularly Valkyrie and RBMK. I don't think I've seen any other robot quite like this one!
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GeorgeR
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Re: GeorgeR's robots

Post by GeorgeR » Mon Mar 04, 2019 10:07 pm

FoxFire wrote:
Mon Mar 04, 2019 1:11 am
Just want to say, your robots are really neat, I love the aesthetics of them - particularly Valkyrie and RBMK. I don't think I've seen any other robot quite like this one!
Many thanks, I'm glad you like them. Personally I'd much rather build something different and interesting than just go all out for competitiveness.
Team Zero - AWS 58 Champion!
Zero - rambot - - Axiom - axebot - - Valkyrie - drum spinner
Vampire - horizontal spinner - - RBMK - quad spinner gyro walker

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peterwaller
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Re: GeorgeR's robots

Post by peterwaller » Tue Mar 05, 2019 11:25 am

You seem to manage all three.

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LimaHotel
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Re: GeorgeR's robots

Post by LimaHotel » Mon Mar 25, 2019 5:06 pm

George, can I ask what it is you use for chemical welding polycarb?
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Re: GeorgeR's robots

Post by GeorgeR » Tue Mar 26, 2019 1:33 pm

I use "EMA plastic weld" and find it works very well, apply it to both parts, then clamp them together for a few hours.

Be aware that the chemicals it contains (methylene chloride) are really VERY nasty, always use in a well ventilated area and wear gloves to avoid any skin contact.
Team Zero - AWS 58 Champion!
Zero - rambot - - Axiom - axebot - - Valkyrie - drum spinner
Vampire - horizontal spinner - - RBMK - quad spinner gyro walker

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LimaHotel
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Re: GeorgeR's robots

Post by LimaHotel » Tue Mar 26, 2019 7:36 pm

Awesome - thanks man! I look forwards to trying it!
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GeorgeR
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Re: GeorgeR's robots

Post by GeorgeR » Sat Mar 30, 2019 12:23 am

Believe it or not, the current version on RBMK was never supposed to be a competitive robot, it was entirely built to see if my weird gyro walker idea would actually work. I was delighted with it performance at Ant Freeze even though it didn't win a fight, so I was more surprised than anyone when it reached the finals at AWS 57 (and won the best design award!).
It's success means it's definitely here to stay, so I've decided to get started on some significant upgrades. First up are the weapons...

Image

I've moved from 90mm 12.5g Titanium blades to 100mm 20g CS95 Steel ones, this will double the power of the main spinners :D and the hardened steel blades should hold up for longer without going blunt. The chassis is being remade of high strength 6082 aluminium rather than crappy 1050 (I didn't want to waste the good stuff on such a stupid design :roll: ), and the overall build will be tidied up to my usual standards, it's going to be a beast!
Team Zero - AWS 58 Champion!
Zero - rambot - - Axiom - axebot - - Valkyrie - drum spinner
Vampire - horizontal spinner - - RBMK - quad spinner gyro walker

James Williams
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Re: GeorgeR's robots

Post by James Williams » Sat Mar 30, 2019 7:53 am

I for one can't wait to see the upgrades. RBMK is absolutely one of my favourite bots. How much would increasing the power of the blades affect its mobility? One thing that particularly impressed me about it was how quick it was.

GeorgeR
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Re: GeorgeR's robots

Post by GeorgeR » Sat Mar 30, 2019 3:31 pm

The bigger/heavier blades will increase the turning and gyro forces which could make it difficult to control - but I'll dial back the acceleration/braking and maybe adjust the angle of the main blades so it should move much the same as before.
I'm also going to add some kind of adjustment for the movement to tune it to the grip of the arena, I really struggled for control in the BBB arena due to the low traction.
Team Zero - AWS 58 Champion!
Zero - rambot - - Axiom - axebot - - Valkyrie - drum spinner
Vampire - horizontal spinner - - RBMK - quad spinner gyro walker

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EddieJ
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Re: GeorgeR's robots

Post by EddieJ » Sun Mar 31, 2019 12:15 pm

Really need a video of this guy in operation :D
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GeorgeR
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Re: GeorgeR's robots

Post by GeorgeR » Sun Mar 31, 2019 10:45 pm

EddieJ wrote:
Sun Mar 31, 2019 12:15 pm
Really need a video of this guy in operation :D
You're in luck...

https://youtu.be/2Q1-1wDGhec
I've added a comment on this video that's got timestamps for RBMK's fights (and my others)

https://youtu.be/c_qfIdc_MSQ
Jump to 43:40 on this one for a decent fight against Bulletproof (yay titanium sparks!)
Team Zero - AWS 58 Champion!
Zero - rambot - - Axiom - axebot - - Valkyrie - drum spinner
Vampire - horizontal spinner - - RBMK - quad spinner gyro walker

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