Crushers

[psycho_fling]

Re: Crushers

how effective a crusher Is depends on a few things

the force the linear actuator or other exerts
the ratio between pivot points (this changes the tip force)
Shape and position of tip
-for example a tip with right angled edges will work better
-how far tip is from linac

my fw crusher was originally a linak minipak that was overvolted to 24v and in the end produced 10000n (1000kg) , however because the crusher tip isn't on the end of the linac there will only be 700kg at the claw tip (hence above)

So that's what I learnt when designing mine

I have since changed to a dewalt drill motor as the linacs motor so the motion is much quicker .

hope this helps
Alex

[Bodge Job]

Re: Crushers

Ok thanks, I was going to put the ram about third of the way up the arm a nice traditionally cerved so the tips pretty verticle, steel mounts, either mild or hardox, and a hard steel tip, hopefully something harder than hardox, so it doesn't blunten when it's used against that, but I don't know what is that hard that won't instantly brake off, so any suggestions for that would be nice, like what are the blades on spinning blades made from? And thanks for every ones help so far!

[psycho_fling]

Re: Crushers

also the most force is exerted when the tip is at a right angle to the 'ram'

alex

[Bodge Job]

Re: Crushers

Yeh ok thanks, and I was wondering, as ive been searching around the form for a while and I can't find what it is, so how many litres of CO2 is in a 20 ounce CO2 paintball bottle (or the fire extinguisher equivalent)?

[RogueTwoRobots]

Re: Crushers

No offence, but did you try the Search function?
I just searched '20oz co2' and found the answer within five posts.

search.php?keywords=20oz+co2&terms=all&author=&sc= 1&sf=all&sk=t&sd=d&sr=posts&st=0&ch=300&t=0&submit =Search

(5th post down, posted by Mario (maddox10))

[Bodge Job]

Re: Crushers

I tryed to use the search function, I tryed tank and volume, but nothing came up, and the one you found was at 16 bar, how ever I did find one for full pressure later on, and it said it was only a litre of co2 at full pressure in a 20oz tank, so either what I have found is wrong, or I really need to re think my ram size. And thanks for your help, it was quiet late when I searched it, so I probably didn't do it very well.

[RogueTwoRobots]

Re: Crushers

the one you found was at 16 bar

The pressure is regulated to 16 bar from the bottle to the ram. When it's in the bottle it's still full pressure CO2, so would still be 307 litres (if my limited pneumatics experience is correct). If the ram in that example was smaller or was operating at less pressure, it would get more flips as it would use less gas per actuation, but since that's only after it's been regulated to 16bar, it doesn't alter the volume of gas initially in the bottle.

[Laser]

Re: Crushers

middle of page http://www.teamonslaught.fsnet.co.uk/co2_info.htm
http://encyclopedia.airliquide.com/ency ... 81&RD29=82

[billy breach]

Re: Crushers

wow....to many charts for me.....