Team Jamsandwich Build Diary

Hello all just starting this Build Diary for my current and future robot's and hope this will serve as a somewhat guide one day.

Team Jamsandwich

Yeah a random name for a team, well it's just me in the team so i don't know if you can it a team.

The robot

The name: when naming the robot i like to give them deep meanings to them so i named it Rukia. (female name) It mean's flower of regret or the Italian pronounciation for Lucia, meaning light.

I'm making a invertible rambot.

Drive: I have two speed 900's i like to over volt them to 18v or 24v my worry is they may make Rukia too fast to control and I'm making my on gearbox.

chassis: made of steel hope to build it strong.

speed controller: two Victor 883's.

armor: 4mm or 5mm hardox.

weapon: speed and strength and 7mm hardox ramming shield i bet it's too heavy.

Radio gear: DX5e or DX7 i hear the DX6i is a bit dodgy.

at the moment it's just getting the part's together and finding some wide wheels.

Go for the DX5e. It's ledgendary, or go for the planet t5

plant 5 rock (and at the moment there cheep)

Update

Just got my self a DX5e and 24V 3.0ah NiCad BattlePack now i need to get gears, drive Chains, wires, Deans Connectors and so on. Steel bars are easy to get... i hope and i need to find a hardox supplier and wide wheels.

update

Just did a drawing of the layout and chassis on cardboard just to get an idea. At the moment it's 18mm long and 12mm wide of course this is just an idea so it may become smaller or larger. Two problem's the battery's are heavy 1kg i think and there's nothing on the front to weighting it down so i may need to put a motor powered weapon like a disc dum like tornado or something else.

...I don't think you mean mm...

Ah it's 18 inches long and 12 inches wide sorry I've got mm in the mind.

i see it all makes sense now :) by the way where did you get your battery pack?

robot market place website it's a 24V 3.0ah NiCad.

$170 for a battery :o i think i'll stick to making my own out of cells :)

Yea i need to learn to make i own battery pack's next time.

hopefully my mate harry will do it for me as he is pro at battery making

aww, cheers mate :proud:

Battery packs are easy to make. Big enough soldering iron and the job does itself.

Update

Now i have just build a cardboard model of Rukia just to get an idea of it's size. Now she is 17.4 inches long, 13 inches wide and 2.8 inches tall but when it come's to the final build it will be a Little bigger probably by millimetres. By this time i think the wheel's need to be 4 or 5 inches and the weapon i just decided to go for the drum disc it's the only weapon that i can think of to weighting down the front and work upside down. The thing is i don't have equipment to make one and i don't know were or who can make one for me and i need a smaller but powerful motor.

Thing i still need to do

Still need to think how thick the steel bars are going to be the chassis is build like a cage and how to Mount the wheel's.

After i did some thinking and some studying on the FRA forum having a drum disc is not a good idea, after i found out that drum's are forbidden in most events so moving on. I can just go back to the ramming shield or have lifting spikes or lifting Wedge and I'm thinking about weapon's like pincers. At the moment it's just picking which one to go for and then thinking how to design them in a effective way.

how many events are you planning on attending each year?

I like to attend as many as I possibly can.

After some thinking for the weapon I decided to make a lifting Wedge that will life up to 90 or 70 degrees. It will not be powered by a Linear Actuator but by a Geared Motor. The idea is this the wedge will be attach to a shaft with a gear on it and with a gear on the Geared Motor or have this gear that has this drill design i don't know what it's called but i have seen Hypno-Disc use them as drive so that's the idea just to thing's, one is to find a Geared Motor that's powerful enough to lift 13kg and two do you need a speed controller or is it some thing else to be operate as a weapon and not as drive.

i would still use a speed controller

that way you definitely have a reverse position, plus as the name suggests you can easily controller the speed and it can be very useful in a battle not to just have full extension all the time

I did some searching for a geared motor and I have found one. A PDX26 with a 26:1 gearbox and the motor is a DuraTrax 550 run's at 923 rpm 12v it it should be powerful enough to lift 13kg easily. I have seen Jamie's Kaizer that has a drill motor as a Linear Actuator and that lift's featherweights quite well. The only thing is that the PDX26 is about 4 inches long so I need Place it sideways then i need 2x mitre gears, 1x shaft and 1x worm gear but this is not bad. The problem is what speed controller i use, the motor's nominal amps is 1.5 and the stall current is 148 amps so this made my head explode.

It all depends on how you want it to lift.

If you want to be able to control the lift speed and have fine control then a speed controller is the way to go.

Otherwise an h bridge from sufficiently rated relays will allow it to run forwards and backwards but at full speed so less controled

At the moment I'm looking at 30A electronize watch i believe will do the job.

Update

Just got myself some steel bars 16X16 for my chassis.

Looks good so far mate.

P.S. is that Hawke from Dragon Age 2 in your profile pic?

At the moment I'm still waiting on my weapon motor, I what to start building, and yea that is Hawke.

Update time

At the moment my weapon motor has still not arrived, I believe it maybe back ordered or lost. I'll have a look later to see whats going on,
but this has give me time to think about a redesign of Rukia. Why? it's because the lifter is tacked on and part of the original design.

So I have been looking at robots with Lifting Weapons like Panic Attack, Biohazard, Vlad the Impaler and Big Nipper so i can get ideas.

Well after driving myself mad since the last update. I was going to stay with my original design of Rukia but with a better designed lifter. But after some thinking, in the back of my head is telling me that there's a serious fault with the drive I don't know what it is but I know there is a big fault.

So I'm just going to build my mini Biohazard, it's a lot easier to build.

This is a list of what I'm going to use.

Chassis - 4m 2014T aluminium

Power - 12v NiCad battery

Drive - 2x bosch35w motors

Weapon - lifting arm powered by a PDX26 - 26:1 Gearmotor, the is made of the same aluminium

speed controller - Scorpion XL and 30A electronize Speed Controller for the Weapon

here's a ruff idea

Awesome! reminds me of flick (one of my favourite robots) :)

I might as well tell you what i plan to do, well my bosch35w motors only have a 4mm square hole, so I'm going to grind down a 12mm steel shaft at one end. Then have two bearings as supports, hopefully the shaft will not break. As from the bearings i don't know what I'm going to do with them, I can make them or buy ready mounted bearings, it depends on how much space the ready mounted bearings will take up.

I'm finding it hard to get 2014T aluminium, I just can't find it any ware. So I don't know if i should look for some different metal?
I can't use hardox as the chassis, because it may be to heavy at the end.

And I am thinking on how to make the arm, in other words should i put bearings on it or just drill holes and put a shaft through it?

And i have a question do you need a tool to make screw holes or do you just drill holes?

And I might as well show you what the original robot look like.

on the bearing front im not to sure but as its the weapon id say using the bulkheads or what ever and a pin should be fine

depends what your drilling in and into what???

for example a screw into wood can often be put in with no hole

but going into metal your best off to use bolts an 'tap' the hole before which first needs to be drilled.

Update time

Good news, my weapon motor has arrived at last. The way it's going to work is, I'm going to put a worm gear on the motor and have a shaft with a gear going across, well that's the idea.[attachment=0:hfn8g2ts]motor.jpg[/attachment:hfn8g2ts]

And I may have found a supplier for 2014 aluminium, but I'm not going to hold my breath.

So I'm looking at different materials I can use instead, like 5mm Aluminium Plate from technobots or Polycarbonate and so on.

It really depends on how I build the chassis, which is built in box section.

You're robot reminds me of storm2.

Update

It's been some time since my last update. So all the parts are coming together slowly, all I need now is 5mm Aluminium Plate for the base of the chassis, 12mm RG1000 for the bulkheads and Scorpion XL speed controller for the drive.

For the arm I have some ideas on how to build it, one is to weld three pieces of Aluminum together, but I need a mig welder and i have no experience with welding or I can bend some thinner RG1000 or I can screw it with a hardox top who knows.

[attachment=0:2g5ud6yw]robot 5.jpg[/attachment:2g5ud6yw]

This is the layout of Rukia. If you're wondering why there is three different size wheels, I was just buying random just to see what there like.

Good to see the actuator arrived :)
When I posted it I had visions of it being caught up in the Christmas backlog and being lost for the remainder of time.

Update

Just showing the layout and as you can see, there's a different linear actuator. This is one I had for some time, and it was faulty but I got it working.

The linear actuator has a 4 inch stroke that can fully extend in 3 seconds and can lift 40kg.
The way that the actuator is going to make the arm move is identical to Biohazards. It saves space But I don't know how I'm going to make the part I need.

At this time all I need now is the Scorpion XL Speed Controller, but were I was going to order it from is out of stock.

At this point I feel frustrated,down and baffled this is what I get for trying to run before I can walk.
[attachment=2:yn7qs2xz]robot base.jpg[/attachment:yn7qs2xz]

[attachment=1:yn7qs2xz]hand.jpg[/attachment:yn7qs2xz]
I'm going replace the bearing with the grub screws with the smaller deep groove bearing, why? well to save space I'm going to mount the bearing in a block of RG 1000 with a grub screws hope it works.

[attachment=0:yn7qs2xz]wheel.jpg[/attachment:yn7qs2xz]
I like this wheel because it's thin and great grip, and best of all it saves space.

Are you sure that 40kg is going to be enough. I mean when I was looking at a four bar lifter, I noticed that biohazard had nearly 2800 pounds of force in the actuators to just about lift 220 pounds.

That's why I really didn't want to go for it.

That & I really did not fancy cutting that many bars!

I'm only criticising because I care though - you'll work it through. Good luck

I appreciate your concern, all I can do is try to cut out some bars with a jigsaw, from the 5mm aluminium plate which I hope works.
I don't know how I'm going to make the bars connect with the steel shaft. My guest is to insert some grub screws, which I assume you drill a hole and insert them.

The arm it's self, I still don't know how I'm going to make it but, I'll think of some thing. If this does not work then I can change bulkheads and put an axe on it. It will give me a chance to use, one of my speed 900s :) or I can make it just a rambot for now.

I appreciate some tips and guidance.

It's been a while since my last update.

I made some progress, I cut down more of the chassis and cut up the plastic to make the bulkheads, they still some work on them but not much.

[attachment=1:1etal7jq]robot side 1.jpg[/attachment:1etal7jq]

[attachment=0:1etal7jq]robot side 2.jpg[/attachment:1etal7jq]
As you can see there's still a lot of space, but hey it's my first robot.

The only thing I worry about is the arm, I don't think it's going to work but I hope that it will surprise me.

nice, looks pretty big though