Team Inky

[daveimi]

Struth all those hammers in one fight? So are you gonna get a new drill and make some new weapons for it?

[Inky]

New weapons, I don't think so yet. Definitely going to improve them, however.

The spike will get some supports and the chain used for the flail will be bigger so I can attach the padlock without opening links.

As for the wedge I would need a thicker metal sheet and more wooden supports. I could get wood sourced and supports made in a day or so, but getting free metal from my school wouldn't be easy when it's thick stuff.

I have two spare drills ready, just need to remove the grub screws from the broken drill and put them into a new drill to engage the drive in it, then do a bit of soldering. Hopefully it shouldn't prove too difficult.

[daveimi]

Putting the grub screws in is ok if you take your time. My battered wedge is the side of an old PC, hammered into shape on my kitchen step Thought I should show you a piccy!!

[mrsam]

I thought some of those marks looked familiar oh and just for the record that's Hatchet 1, Hatchet 2 will be built later this year and will have an axe at least double the power.

[Inky]

So I fixed up Tankslapper today, put a new motor in, and it's all running smoothly which is pretty good.


I took apart the old drill motor to see what I could salvage, and apart from the screws and a few of the gears I kept the actual motor unit. Is it any good or should I just throw it? If I keep it what would it be good for, saw, drum, spinning bar, etc?

Also, I still have got to remake the wedge and flail, which won't be too difficult hopefully. Going to buy a better chair with bigger links instead of using one from my garage. And I'm going to mount the spike differently so it'll be more secure and take a few more hits.

[Mega Masher]

How did you get the logo on the top? Is it a sticker or painted on or whatnot
Nice robot btw

[Inky]

It's a vinyl sticker.

[Mega Masher]

Ok thanks

[Inky]

Spike: Take 2.

Spike 2.jpgSpike Attached 2.jpg

[mrsam]

Who doesn't love a good old fashioned spike? It's quite long though so I'd be worried about it bending easily, might be worth shortening it slightly but other than that I like it.

[Mega Masher]

Will it be static, or will it be a moving spike

[daveimi]

This looks well

[Inky]

Hey again everyone, I need you guys' help and recommendations.

I'm thinking of designing a new featherweight and want it to be a ground up rebuild of my current basic 4WD wedge/rammer Tankslapper. However because the first version was just a Scot Bots kit, and the second version used the exact same internals as the first transplanted into it, I don't have any knowledge of how to actually make a robot WORK.

Still wanting to keep it simple, the new version would be another 4WD rammer but with the wedge on an axle this time (like a baby Original Sin) so I don't throw myself in at the deep end. What motors, speed controllers, batteries, etc would you recommend for a strong and speedy robot like that?

Also, what is the reprogramming/hacking that you need to do with speed controllers? That's something I definitely have no knowledge of but feel I should probably learn sooner than later if I want to be a builder.

Thanks in advance.
Cam.

[Roboteernat]

Other sources are available for components, these are just links i found to show products, except Argos and botbitz.

The new Argos drill motors are quite good.
picked up some monday and are a great upgrade from the previous argos drill motors
http://www.argos.co.uk/product/6161400

Speed controller, people are steering towards several types: scorpians or sabertooth controllers
http://www.robotshop.com/uk/sabertoo...or-driver.html
https://www.amazon.com/Sabertooth-Du.../dp/B008OMQUXC

these speed controllers dont need programmin, just wiring up.

Botbitz reprogrammed Brushless ESC :
http://ranglebox.com/product/botbitz-30a-brushed-esc/
they are the UK distributor for these. The source code and reprogramming is released should you wish to do the programming yourself, will find links if needed.

wheels: im getting 4 types sent to me tuesday for testing, but are 80mm diameter, range from £2.80 to £6.70 depending on tyre type.

Batteries, drill batteries, LiPo, Gel, allsorts.

[Inky]

I searched other places in the forum I hadn't tried before and got some useful stuff there. Thanks a lot to Jamie and his speed controller guide I found.

4 x 18V motors, overvolted by a 24V/6S LiPo, controlled by 2 x 24V/85A ESCs.

Turnigy 3000mAh 6S 30C Lipo Pack
RB-775-18v Brushed Motor
BotBitz 85AMP Electronic Speed Control (v2)

https://hobbyking.com/en_us/turnigy-...lipo-pack.html
http://ranglebox.com/product/775-18v-motor/
http://botbitz.com/product/botbitz-8...ed-control-v2/

Two more questions though.

Is the LiPo I picked safe to work with the ESCs or should I find another one with a lower mAh rating?
What sorts of gearbox would be recommended for the motors while Ranglebox is out of stock on the Saturn-16s?