Team Eventorizon: Build Diary

[tweedermeister]

Re: Team Eventorizon: Build Diary

I can definitely vouch for the strength of ABS, I've used it in a couple of projects and has proved to be a strong material in all of them, very shock resistant.

[Bodge Job]

Re: Team Eventorizon: Build Diary

I have never had a problem with sabertooths, I think they are brilliant. Good cut outs etc.

[Eventorizon]

Re: Team Eventorizon: Build Diary

All the parts have arrived for the ant so after measuring their real dimensions I have been able to create a CAD model...
[attachment=0:26nnwyou]Silicon Antweight.png[/attachment:26nnwyou]
Green Box = 5A Sabertooth
Black Box = Orange Receiver
Blue Box = 180mAh Hyperon 2S Lipo
Motors = 100:1 Metal Gearbox
Wheels = 42x19mm Pololu
Chassis = 3D Printed ABS 2-6mm Thick

The CAD is just to visualise it, I still have all the internal stuff to do and the split line but it gets all the parts in no problem. Now what were all the key things to remember when designing for 3D printing... hmmm...

[webby]

Re: Team Eventorizon: Build Diary

Looks pretty cool, guessing its a flipper so where's the servo or lifter?

[Eventorizon]

Re: Team Eventorizon: Build Diary

No weapons, all the weight has gone in the motors for maximum torque and pushing power!

[Eventorizon]

Re: Team Eventorizon: Build Diary

Finally Progress!

Been so hectic at uni have only just been able to sort out the last few details to get Conker mechanically functional.

First a bit of Binky...
[attachment=2:2pmb50sd]20121213_143310.jpg[/attachment:2pmb50sd]
My first real bit of machine work. Lathed out the core of the 40T pulley to slip in the clutched bearing and then locked it in with 2 3mm grub screws. Then into the bolt which is functioning as the discs axle I put 2 6mm grub screws. This better be as strong as it looks as this is what will be spinning up Binky's disc.

On to Conker and modifying the Blue wheels. To save space I put them on the 'wrong' way round saving about 20mm but they kept fouling on the chassis. To stop this I put in washers but all that did was cause the front bearing to jam up and burn out one of the motors.
[attachment=1:2pmb50sd]20121214_111524.jpg[/attachment:2pmb50sd]
Now I have recessed in a M8 washer so that the wheel tightens onto the lip behind the screw thread, not onto the motor.

Also I have added the bolt that fixes the twin pulleys to the disc itself. The coutersunk bolt hides neatly in the left hand pully and then it tapped into the right with an M8 thread.

But the main event is that the armour has finally been welded up!
[attachment=0:2pmb50sd]20121214_153301.jpg[/attachment:2pmb50sd]
As you can see there is quite a box of oxidisation on the left hand side but most of the welds on the right are untainted. I was able to modify the HDPE under layer so that it wall fits nicely together so the only things left now are the wiring and the top Ti panel.

Quite a bit of detail there but it seemed a shame to waste it

[harry hills]

Re: Team Eventorizon: Build Diary

oooh that is beautiful, really nice robot you have there.

[Revsmin]

Re: Team Eventorizon: Build Diary

If you have space issues with 100mm wheels, buy some competition wheels; they're much thinner.

[Eventorizon]

Re: Team Eventorizon: Build Diary

The wheel width was never really the issue it was just how far they stuck out from the front of the motor. I have considered going to Banebots wheels but that will have to wait. Though I still have yet to drive her like this with the new armour... she may not even run!

[Ellis]

Re: Team Eventorizon: Build Diary

Looks so cool aaaa! Can't wait to see it run.

(now give the electronize the boot and you're on to a winner :b)

[Mouldy]

Re: Team Eventorizon: Build Diary

Looks really good got some pictures of it with the top off?

[Ellis]

Re: Team Eventorizon: Build Diary

Just going to leave this here:


Is this some sort of robot prophecy? :P

If we ever collaborate on a machine, Alex, we're calling it Torconka. I have decided.

[Eventorizon]

Re: Team Eventorizon: Build Diary

Ok short report... she runs... poorly.
The driving feels just like the old conker; slugish to respond, twitchy, uneven. I think I can put most of this down to the crap ESC's I am using - Electronize FR30HX.
She loves going forwards but will only go back left. Spinning to the left is fine but spinning right is slow and uneven.
On the plus side, the armour is running so low to the ground that it was rubbing shavings off the vinyl floor in the kitchen!
In short I think I need different ESC's, these are just not up to the task, and I need to fix some foamy stuff to the underside of the armour when I bolt it down to it can ride over bumps.
Sorry no vid as I am the only one in the house.

Ellis, the fact that Conker 1 and Tormenta 1 looked so similar despite being developed in two entriely different countries is remarkable enough in itself.
What about Conkamentia? Or simply Titan? Cos our robots seem to just be Titanic in size! Its a shame they seem to sink just as easily!

Mouldy, I can take some but its a mess as its the same rushed wiring that I did for UWE freshers. Over the holidays it will get some proper TLC and decent wiring with heat shrink etc. not the masses of electrical tape and wobbley ESC's

[Mouldy]

Re: Team Eventorizon: Build Diary

get some tz85's

might be worth grinding some clearance down the side armour and keeping the front low... although having low side armour seems a good idea, a flippers wedge will always be lower, so the benifits arent that great.

[Eventorizon]

Re: Team Eventorizon: Build Diary

Yeah, that was the idea behind Conker 1, they will get under regardless so make it harder for them to have control when they do...
And after seeing the difference between Tormenta 1 on FR30HX and the TZ85's in Tormenta 2 I am almost certainly going to get some!