Team Jamsandwich Build Diary

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.