Pneumatics for my axe

I looked on ebay and all the bore sizes are to small...so what about these?

http://www.pneu-store.co.uk/acatalog/Pneu_Store_Webshop_CDG1_925.htmlhttp://www.pneu-store.co.uk/acatalog..._CDG1_925.html

CDG1BN80-150
Standard Type Double Acting, Single Rod

Price: £102.77 / Euro129.83 (Excluding: VAT at 17.5%)

Does that mean its 80mm bore and 150mm stroke?

I should expect so, but with those prices, and that brand it seems doubtfull.

SMC is good stuff.

Bore 80mm stroke 150mm that is correct. It says so in their documentation.

Thanks for the help.

I looked on ebay and all the bore sizes are to small

http://cgi.ebay.co.uk/Festo-Double-Acting-Compact-Cylinder-80mm-Bore-80mm-Stk_W0QQitemZ130181963557QQcmdZViewItem?hash=item1 30181963557&_trksid=p3286.m14.l1318http://cgi.ebay.co.uk/Festo-Double-A...re-80mm-Stk_W0 QQitemZ130181963557QQcmdZViewItem?hash=item1301819 63557&_trksid=p3286.m14.l1318

Leave it to the master.

Thanks for that one Woody.

Looking for more like 125-150mm stroke though.

Thanks anyway.

Dan,

Your building a feather not a middleweight.
I think your going to get into all sorts of probs with such a big ram.

Do some sums on co2 consumption and the energy your Axe mech could possibly use before sending you Bot over Axe Head.

http://www.roboticgladiator.com/tutorials/ax1.htmlhttp://www.roboticgladiator.com/tutorials/ax1.html

Perhaps John will step in with some guidance for you.... he posted a quick math guide for Axe acceleration and energy the RFL Forum.

Ok,Woody.

Do you mean weight problems?

Thanks for the link.

BTW i worked out on a pressure calculator that i would get 512 kg of force,is that good?

Cheers.

(Message edited by dan_boulton on July 25, 2008)

Weight of ram and axe mech ... CO2 Gas consumption = weight / mass of liquid co2 / size of required bottle etc ...all problems to be taken into account before buying things that will be no good to you.

The max velocity / accel of the head mass at a given distance is goverened by your rams force.

Once you get up to around 2 kJoules, a heavyweight robot would generally start jumping off the ground rather a lot.

Quick calc for your proposed ram.

Energy is force multiplied by distance in Newton Metres ...convert units
512kgs force = 5017 newtons
ram stroke 150mm
E = 5017 N * 0.15 m = 752.55 Nm or Joules