Team Eventorizon: Build Diary

[archie2000]

that conker is a solid looking machine!
seriously man that will be fun in the arena.
is it going to be 2 speed 900disc :twisted

[Eventorizon]

Yep but I have made two key changes...

1: it is re-geared to 3.33:1 ratio (12T & 40T)
2: it is running of two 5 cell lipos in series to give 37V

With those modifications the theoretical speed of the disc has gone from 4500 RPM to 6000 RPM!

[SamO]

That's looking sweet!
looks much improved from the original Conker and should do really well at the champs next year

[Eventorizon]

Got working on Conker's uprights today and got most of the work done but the big step today is that we took Binky to Tadweld top get him welded up. I can't show you but he is looking Sweeeeet! They have only tacked the pieces but they should finish the final welds tomorrow. From a pile of pieces to a full chassis and armour in less than a week!

[Eventorizon]

And its all gone wrong... We got Binky back yesterday and the darn thing doesn't fit properly despite us giving the company all the pieces they needed to make it line up perfectly.

The back end is bowed though a good 4-5mm and some of the welds are over a millimetre out of alignment. Track one mistake round the rest of the triangular panels and the whole armour is twisted.

I am pretty sure we are going to take it back and have them redo at least one side. We will have to cut new parts for it but if the armour doesn't fit then it will leave all of the internals vulnerable.

On the plus side Conker is coming along nicely. Just need to file down some of the HDPE in places to it all fits nicely then start bolting him together. Though I don't have a 28mm or 62mm drill but for the bearing or the motor but that can wait til uni.

[typhoon_driver]

that's not overly surprising on such a thin chassis

[Gabe01]

The problem of thin metal, and welding without continually checking for wonkiness

[Eventorizon]

On more detailed inspection it seems we have our problem. The main back plate at the base was welded a good 5 degrees away from where is should be and as a result that has moved all the other plates out of alignment. If we can get them to re do the back then everything should drop into place as it was designed to.

So, assuming you can simply grind off the welds to do it again...

Remove the 9 back plates by grinding them off then swap the two bent plates over so they are on the other side and as a result bowing out not in, adjust the angle of the central plate and re-weld.

[Eventorizon]

Conker II is now beginning to look like a robot and not just a bunch of parts. Uprights are in and fitting nicely, motors are on and its got enough structure for me to be able to lay out the other parts in their final positions; see http://teameventorizon.imgur.com/all/.

There are also some comparison pictures of Conkers 1 & 2. Conker II is 80mm narrower than the original in its main structure but will actually be 100mm wider when the armour panels are on.

Binky has gone back to be re-welded free of charge but it doesn't solve the design flaw inherent in the design which is entirely down to me. The armour and base don't overlap and as a result the robot doesn't hug the ground like it should leaving it with a lip on all edges. We have several solutions for this but no idea which will work.

[jonny]

looks very impressive so far