Team Jamsandwich Build Diary

[JammyONE]

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.

[daliad100]

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

[JammyONE]

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

[JammyONE]

Update

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

[death robotics]

Looks good so far mate.

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

[JammyONE]

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

[JammyONE]

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.

[JammyONE]

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

[jonny]

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

[JammyONE]

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.