scruffy

[daveimi]

Re: scruffy

I love the way you package your robots its clever. Do you have any sketches etc as to what the lifter will look like when you've finished it?

[plargen]

Re: scruffy

the only sketches i tend to do are a sort of floor plan to make sure i can get everything in the shape, i tent to go with a general idea and let it build up that's how scruffy got its look

my next 1 after this will be a growler ish style robot, ive already got some of the steel just trying to find some decent drive motors as the 1s i use to get arn't available anymore

[plargen]

Re: scruffy

i've been been estimating how much weight i have left on the bot and i might have enough to add some additional bolt on armour on the sides i think i can get away with either 5mm thick cheep aluminium or 10mm plastic like hdpe, my main problem is which might protect better against spinners

i was looking at direct plastics at

hdpe
acetal
polypropylene
rg 1000


any ideas on which would be better, at the end of the day their sacrificial and they would have 3mm steel behind them so if they would all work to about the same level then i would just go for the cheapest

[typhoon_driver]

Re: scruffy

HDPE for sure.

[plargen]

Re: scruffy

ok thanks its also 1 of the cheaper options

do spinners tend to chew and flex it rather than just bending and break it, im also wandering how cheap 5mm aluminium would fair

also is grade 500 hdpe any good, found some the right size on ebay

[maddox10]

Re: scruffy

HDPE 500 is the softer cheaper version, very shatterproof and the most easy (still not easy in itself) to weld.

It's what the Hannibalito's are made off.
And I think Hannibalito 3, build in 2007 and not spared in the amount of fights, is proof of the quality of the stuff as armor. On the other hand, it's in certain spots up to 30mm thick.

Polypropylene is useable, but it's harder and a tad less shatterproof than HDPE.

Acetal is even harder, but a lot more brittle.

RG 1000 , no comments there.

[typhoon_driver]

Re: scruffy

rg 1000 is the poor mans nylon. Not useful for much for us. Jamie tried to use it a while back in drumroll. Didn't work out so well.

[plargen]

Re: scruffy

thanks for the info

sound like the hdpe is the best to go for on top of the steel shell

[RogueTwoRobots]

Re: scruffy

rg 1000 is the poor mans nylon...Jamie tried to use it a while back in drumroll.

Indeed. I chose it for exactly that reason...I was a poor man at the time

Nice stuff to cut/work with but not the best building material, especially for chassis bits etc.
Difficult to say how it compares to HDPE; I'm now just in the habit of using Nylon for chassis and HDPE for armour (if needed).

[PJ-27]

Re: scruffy

RG1000 sounds much cooler though....

What was that exotic metal you used on your Drum Jamie?

[Bodge Job]

Re: scruffy

yeah thats what i do, nylon structural and HDPE armour, once made one completely out of HDPE, and hated it, it didnt feel strong at all to me, although most people seem to have sucess

[RogueTwoRobots]

Re: scruffy

What was that exotic metal you used on your Drum Jamie?

I'm assuming you're meaning Supralsim 690. Not sure if it's classed as an exotic material, though it does have a fancy name! It was just a form of hard steel, similar to Hardox, that was easily obtainable at the time.

They were on the 3-tooth drum that's been scrapped though. Current drum is just a s/s tube with Hardox 500 bar teeth.

[PJ-27]

Re: scruffy

Yeh that's the stuff! Awesome name.

[plargen]

Re: scruffy

what resistor/diode do you need to use with a microswitch for an actuator stop

[RogueTwoRobots]

Re: scruffy

These are the ones I fitted today in Carcinus:

http://www.technobotsonline.com/1n5401- ... diode.html

Seem to work fine.