Hard Time's build diary

Ok
Team Magma is making has ordered most of the parts for virus.
The plastic has arrived today.
little Q,
I want a spiining disk for kilo bot approx 170mm in diameter and want to weigh under 300 grams what thickness should I use and what material (i'm was either going to use Hadrox 450m, P20 or Grade 5 Titanium)

Find the density of the material you want and do the maths to calculate the volumetric size of your bar and you have your weight.

For comparison, the bar on Spinza is 270g, some sort of steel, and 320mm x 45mm x 2mm.

It's far too heavy though, components alone for Spinza weigh a Kilo.

got some bits for virus my kilobot...

got
2x MFA 30:1 gear motors
brushlees spinner motor
spinner motor ESC
wheels

ordered..
11.1v 1000mah lipo

also got some bits for Twister my FBS antweight.

bought 3 brand new pneumatic cylinders off ebay last week for under £25 (amazing deal!) and they came today
specs...
63mm bore, 75mm stroke
80mm bore, 50mm stroke
30mm bore, 100mm stroke

some pics...
http://i1180.photobucket.com/albums/...s/0ae62fdf.jpg
http://i1180.photobucket.com/albums/...s/e92e1e17.jpg
http://i1180.photobucket.com/albums/...s/aea1a19e.jpg
http://i1180.photobucket.com/albums/...s/705290dc.jpg

How much (roughly) is a 63mm bore 75mm stroke cylinder meant to weight?

Finished Laser! :D
http://www.youtube.com/watch?v=Kaw6YbZT ... ideo_title

my new cylinders.... :proud:
http://www.youtube.com/watch?v=4U-Qzp3nG0U

Looks much better invertible

Thanks :)