The drive is fairly simple, It comprises of a single straight chain drive from the motor shaft to a sprocket attached to the wheels. The chain is 3/8 pitch mainly because I had a lot lying about from oblivion 2. The drive comes from two C5 motors. They are more efficient than most motors. They will be run at 36V weight allowing, rpm in the region of 7000. The gearbox will be removed, due to space limitations in the robot. I will be also removing the nylon front plate as it has no provisions for bolting to the chassis from the front. The drive will be fairly light, the whole drive including wheels, axle, sprockets, and motors weighs in at less then 15Kg
The most interesting part, the weapon a disc can be seen below. The fact that it's powered by a lynch should give you an idea as to the weapons capabilities.
The bearings used for the disc have a bore diameter of 40mm! The disc will have a complete Mig welded steel structure. The ribs that you can see on the above drawings are 6mm thick. The disc will have 6 ribs. The weight of the disc should just be below 25Kg. .
Panasonic came to our rescue last year when Oblivion 2 was overweight. They got us some Nimh 6.5Ah 1.2V batteries. Unfortunately we found that there was not enough time to make a charger (they require a special charger). So they donated a box of 12Ah 12v SLA batteries. We will be using these batteries this year, There is a possibility of using new NiMH batteries but there is a risk that the tabs that connect the batteries could fail and the Lynch draws too much current to use these batteries. We will have to wait and see....
I know very little about PWM controllers so the electronics are all bought. We will be using two Pro 120s for the drive and heavy duty power relays for the Lynch. The RC gear is standard 4ch Futaba stuff. We may upgrade to some PCM gear later this year.
The chassis will be of complete aluminium construction. I will be using 6-7mm thick plates which will be riveted/or bolted together depending on the stresses in the region. The main cross members will also be made from 15mm thick ally. They will support the disc, and the motor driving the disc (not shown below). They will be bolted to the two side plates with M8 bolts.
The robots dimensions have changed, since the diagram was created. I originally intended to put the batteries in the disc but I have now that it would be a bad idea. I don't really want to open the disc up to find a load of pieces that were once are battery!