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Yes its easy enough to change the motor depedant on the compressore you buy. Infact, someone in college has just bought the compressor mechanism on its own for a project to put their own motos in. I wouldnt risk it without the pressure switch on though.
I think some of you are missing the point here.
Mario is right when he says that buffertanks dont need burst disks prds etc.
But the thing Im trying to get across here is as the rules stand an event organiser could ask you to provide written certification or CE type approval for ANY part of your system that opperates above 3.4 bar, and if you could not provide it he would be quite entitled to ban that machine.
Worse still, god forbid there was an accident resulting in someone getting hurt, you can bet your life the H&SE would want to see the paperwork for every inch of that system, Or at least show that EVERY part has the relevent CE type approval for the purpose it was being used for at the time.
Just something to think about.
ok i get what your saying now, but is this clear to people, i mean if this was announced at an event would everybody have the documents on hand? or is this (undeliberatly)looked over?
Dave, I have to agree with Geoff here, he is aiming is comments for a beginner (no offence Alex). As a result Geoff is quite right in quoting rules and saying that people should air on the side of caution. When we started playing with pneumatics we didnt have much of a clue, it was only with the help of roboteers such as Mike, Alan G etc that we learned. Many of us have been doing this for years and have a reasonable level of experience, people just starting with pneumatics should use caution and only use components at the pressure they are rated to(or sufficiently tested to pressure, by competent persons).
Dave im not having a go at you, just in case you think I am.
Alex - Using a compressor system may be a good place to start as it will give you practical skills needed to deal with more powerful systems (CO2). Having said that I agree with Dave our experience is that the compressors do tend to fall apart after a while, but Cutlet used them more successfully than us.
I think Ian once told me his was around £20 from Halfords, Not sure tho. But I carnt see anyone getting a reliable compressor for £5. Anyhow...
Ed. As Ive said. I have tested a butane tank to 18bar, If I could justify spending the money i would get one proffeshionaly tested at 10bar to prove my point. As you know I ran one at 10bar for a year no probs in one of our old feathers. Along with a LP PRV (as needed acording to the rules) theres no way the tank can rupture.
As for trying to help people, I spent about half an hour wrighting how to make a compressor setup thats reliable.
Ok then my point is that anyone starting to mess with pneumatics should go by the rules or as Geoff said in his last post be prepared to disappointed if they turn up to an event with a previously untried setup.
people should air on the side of caution.
Im assuming(hoping) that was a deliberate pun?
Dave, no offence, but you answered your own question by saying I spent £12 on a compressor for my first feather weight...4
times...because they were of such bad quality they kept breaking.
a lot of people have managed it Dave, by breaking 4 maybe its not the product but the user that is lacking. Alot of the people who have bought cheap compressors will now be saying to themselves, i ran without pressure switches without problems. Stop trying to prove me wrong Dave, we can both be right you know.... and if you want to keep moaning about cheap solutions, using cheap plastic rams and cheap valves, cheap buffers and putting holes in things, I suggest you do a google search for rexs robot challenge (lots of cheap bits like plastic rams) and cutlet, who used the 1mm hole I mention. Not arguing with you again Dave because you are a kid (16? 17?) who regurgatates info he has heard from others (often oher kids), and that is the extent of your knowledge as far as i can see. Ive tried to be nice and polite with you, but the who lets get Grant cooper in on this aswell is just annoying and childish. As you can see Im not replying to Grant, because at least you made some kind of point Dave.
Does it show Im annoyed? sorry all, not making a very good contribution to this thread right now am I? my advice is documented above and I stand by it, dispite what the teeny boppers say. :)
Ok, us kids, me being 18, building robots for many year, and learned from others and experience in engineering know that using a compressor in a system without a pressue switch is not a good idea for atleast 3 reasons.
1. The compressor will burn out.
2. this results in very high costs every battle
3. will not do the batteries any good what so ever (as everbody knows a stalled motor Absolubtly drinks power).
And its not the age that matters, its the experience, and as i beleive (actually i know) dave has had hands on experience with these types of systems for the last 4 years in MANY different robots.
Lets all just grow up and stop with the bickering. It gets us no where and what image do you think it will portray to people that want to get involved in the sport? Remember that anyone can see these threads.
Admin, this may be a thread that could do with some cleaning. Just a thought.