Quote Originally Posted by robotic_ants
Cannot wait to see what design you come up with for the actual bot, I was making some offers on the ram and got down to about £175 but got unlucky when someone paid full price. Guess this is the ram lol. Should make a good machine but as just mentioned above you may need a bigger supply bottle or be really good at driving. When fighting other good flippers you'll use half of those flips self-righting.

There are a few of those 140mm monsters made by Kos (Tough As Nails), and 1 by me (only a small difference in setup). I know where most went originaly.

1 to Alex/ODT 02 (the smallest FP flipper heavy I know of, even smaller than Mute)
1 to BillE (that one returned to me and was sold recently)
1 to Swedemac/Mytril (a crusher, with 8 tons of instant force, it was a nasty one, but alas, it suuffered from some design flaws).
1 to Hammerhead Niels (that went in Hammerhead III, a flipper, suffering from to many compromises)

@Jonny
As far as I know, the 3 refurbished composite scuba bottles are still for sale.
And yes, you're right, 95% of the CO2 bottles have a burst disk in the valve that blows at 190-195 bar. Older types can have one that goes at 135 bar.

@ Helihurley, a Burkert will have enough flow to get the ram emptied inside a second. Just take the easy way out, buy 3 Burkerts.
There are some custom build FP 5/2 and 3/2 valves. One of those uses a Hitec BS805 servo to operate, all the others use low pressure to operate. But with pricetags over £350 to build them, and all of those hidden in dark places, or in active robots (TAN uses a Woody 3/2 FP valve)