alternitive armour or different thickness

[mattsdragons]

Re: alternitive armour or different thickness

i had better get the ginder out then as i want an ok bot to take to the 2012 champs as on other one has 4mm steel and 8mm hdpe

[Max]

Re: alternitive armour or different thickness

What is better armour, 15mm hdpe, 2.5mm hardox/steel, 5mm aluminium in full combat?

[maddox10]

Re: alternitive armour or different thickness

In feathers , only the better crushers can penetrate 15mm HDPE.

2,5mm Hardox doesn't exist, unless you mill 0.7mm off from the thinnest commercialy available sheet.

5mm ali, depening on grade goes from Ok to cardboard would have been better.

[Max]

Re: alternitive armour or different thickness

Sorry meant 3.2mm hardox

[RogueTwoRobots]

Re: alternitive armour or different thickness

From personal experience, I would go for the 15mm HDPE. That's not to say that the metals won't be a good form of armour, but if your 3.2mm hardox gets hit and bent out of shape so much that it is impairing the operation of your robot, you're going to have a helluva time trying to bend it back into the right shape with the tools and facilities you have available at a typical full-combat event (i.e. a table and whatever tools you brought).

The HDPE, on the other hand, will mostly likely have a big gash in it from the impact, but will either flex and return to its original shape once the energy in the hit is dissipated, or be ripped off/shredded. In that instance, you can either heat up the HDPE to close up the gash/shredded bits, or cut a new piece of HDPE to replace the old bit. And since HDPE can be cut with a standard wood saw, you can manage that relatively easily at an event.

That's just my personal preference, but plastics - and HDPE in particular - have got a good reputation when it comes to full combat armour.

[mattsdragons]

Re: alternitive armour or different thickness

so you would recommend 15mm+ hdpe?

[jonny]

Re: alternitive armour or different thickness

for armour hdpe is great, thicker the better.

[RogueTwoRobots]

Re: alternitive armour or different thickness

Actually I would say that 15mm is unnecessary. Anything from 8mm-12mm would suffice in my opinion. Carcinus uses 12mm HDPE for armour and I'm confident that the important bits are suitably protected. 12mm upwards is a waste of weight and starts to make the robot too bulky looking (again, just my opinion). If you really want thicker HDPE than that, then layer it up in localised areas - perhaps at points where you reckon your robot could be more prone to receiving impacts - rather than spreading it all over your robot.

[mattsdragons]

Re: alternitive armour or different thickness

hdpe it is then

[terry]

Re: alternitive armour or different thickness

gary is this the titanium , i want some for the front of my flipper like a scoop, i think its maybe to pure or high grade and well expencive. just want to know what type so i can keep a look out on ebay etc. cheers.

http://www.advent-rm.com/catalogue/item ... ber=TI2284

[terry]

Re: alternitive armour or different thickness

or this

http://www.ti-shop.com/titanium-ti/shee ... sheet.html

bit cheaper !

[typhoon_driver]

Re: alternitive armour or different thickness

Grade 5 is probably what you're after. How much are you looking for? I have a sheet of grade 2 2mm and a large sheet of 1.8mm grade 5 that i may be willing to cut a section off of.

[terry]

Re: alternitive armour or different thickness

cheers gary, this is what its needed for, the 1st pic is what i bent up at worthing, that was 3.2mm hardox, I want to put a plate similar in size to the 2nd pic. with the plate on i can slide under oppenents alot easier !
would 2mm titanium be ok ? i think ripper and behemoth have ti on the front and weird alice have now added a bit aswell, what do you think ?
cheers.

[terry]

Re: alternitive armour or different thickness

the size of the card on the top pic is 30cm x 11cm.

[terry]

Re: alternitive armour or different thickness

gary is ant bits you suitable for that ? or can you or someone else know where i can get some from ?