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Mario ..Id strongly suggest that you input that machines Dimensions and flow etc thru the Hassocks Hog Flipper Calc IF you want to get the best performance available.
A quick eyeball of this nicely constructed machine suggests to me that the flow is nowhere near enough for such a large ram and short flipper ratio.
I agree woody, but its not my machine, its just based on the ideas as seen in Gravity.
The ram isnt from my hand either.
But the builder just wanted to build as small as possible.
Itll still chuck an opponent a decent height...but well below the rams full potential.
Hardly matters an awful lot if its succesfull as is.
Where do you guys get your CO2 from? BOC?
My gas supplier is Ijsfabriek Strombeek Bever. CO2 and welding gas.
I guess a bit out of the way for you.
Ive never used them but ...http://gascylindersuk.co.uk/store/catalog/index.php?cPath=22&osCsid=56bb045addbc4e28eb6fac0a 6aa5b6b8http://gascylindersuk.co.uk/store/ca...d=56bb045addbc 4e28eb6fac0a6aa5b6b8
I guess another advantage of having the low pressure system for the actuating cylinder for the ball valve is that you already have most of the plumbing set up to have lower pressure co2 to return the cylinder piston to its starting point.
I think i will have to go with BOC for gas. Woody, the company you suggested just deal with the northwest.
Oooh interesting discussion.
We changed from using solenoid valves in IA3 to ball valves in IA5 because we always seemed to have problems venting the ram properly. We have certainly solved that in IA5 but whether that is purely down to the ball valves or whether the additional buffer tanks help, Im not sure.
Our ram is 80 bore * 170 stroke and the buffer tanks are more than 5 times that volume. We can get around 25-30 flips out of a single bottle of gas.
Rob
Suren ..I retract with about 4 bar on my medium pressure setup ... 20 - 30 bar working pressure.
However most F.P. Rams are now single acting and bungee stop / return so the L.P. would only be used for operating the ball valve ram.
Hi,
I€™m planning on making a FP flipper to get back into robotwars. I have been following this discussion, have spoken to Mario and been to the M2 website, all have been very useful. Now this is my understanding of what I need€¦
1€ stainless inlet valve
Low pressure actuator ram for valve
Regulator (2 stage, for low pressure actuator/high pressure ram?)
2 x 1 litre buffer tanks (made from disposable CO2 bottles)
Manifold in between buffer tanks and SS valve.
Electric valve for low pressure ram
2kg Fire extinguisher bottle for CO2 storage
Exhaust valve? Does this have to be electric? How does this work?
Ram with inlet and outlet port
Bungee cord to return piston
Fittings and pipes (can I use copper piping?)
Liquid stopper?
Anything else? Any and all advice will be usefull!
If you can let me know the best sources for these part as well i would really appreciate it.
I would appreciate it if someone near me was willing to show me their set up and show me how to fill a fire extinguisher. I€™m in Wallington surrey.
I€™m getting the buzz like I got when I made my first robot 10 years ago called Oblivion, anybody remember that? I just know very little about pneumatics.
Thanks