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Since you have the weight you could either look at slopped sides or adding a layer of HDPE on them, horizontals will love to have a go at those and verts with a good run could take a nice chunk and possibly bend the chassis. My spinner has flat sides so I went for layering it up with HDPE and it should do the job
My thoughts exactly! I can put 15mm HDPE on the sides with counter sunk holes to cover the bolt heads too. This will stop verticals catching the bolts and protect from horizontals!
I might not be using a bolt for a weapon shaft any more, as Harry has offered to machine me one along with the pulley. Just need to clear things with him :p I have the bolts as a backup just in case though.
Ordering the armour and frame work this week. How does this sound compared to what other bots have? I've no idea if I've gone too heavy or gone too light on the protection haha.
Frame: 15mm alu 7075 frames
Base/top/back/sides: 2.5mm grade 5 titanium
Side extra: A layer of 15mm HDPE (optional/replaceable)
Front Wedge: 5mm grade 5 titanium
Weapon: 3 stacks of 8mm hardox discs, with a spare in case 3 just isn't enough :P
That sounds pretty good - is there any spare weight to increase the titanium on the back? With no HDPE, its the weak point in the armour.
I should have just about 1.5kg to spare I think. Not sure how much the HDPE sides will weigh, but probably enough to have atleast a 5mm or 10mm sheet on the back
Mate sounding Pretty good but you ain't got much time so I'd start building :-)
Where you getting your titanium fam?
Drumroll's side armour weighed about 670g a piece last year if I remember rightly, and that was a 3mm steel angle frame supporting two layers of 8mm HDPE, so yours shouldn't weigh too much and leave you enough for HDPE on the back too.
@ady, i have started!! :P CAD was a big chunk of the work to be honest. Sorting out wheels and various other little bits while I wait for parts to arrive now.
@Harry, the 5mm is being suppled by Control Waterjet along with the 15mm 7075, and the 2.5mm Ti by LaserExp... Control had a 5mm sheet already, LaserExp are ordering it in, with a lead time of around 5 days.... which isn't ideal but I've emailed so many places and not gotten anything back.
Hardox is coming from KCut, who seem to be really freaking cheap to me?? £10 per disk! Maybe I just assumed Hardox was costly stuff but it isn't?
Ok, so as of 5mins ago, after filling in the champs application form.... this robot is now named... FISSURE...... that's scary enough right??? Me and Dave are now called Team Meltdown, named after the first ESC we built which went up in a glorious pillar of flame.
I hope my robot building skills are as fast as my crappy name generation skills!