Stone? Everyone on the planet except Angola, Myanmar and the Americans have gone metric. Everyone also understand pounds (both POH’s use pounds). Post industrial revolution, I don’t see a reason for equating personal body weight to an equivalent number of “big rocks”.
Just joking (...but please use kg or lb). R22 seat limit is 240, R44 is 300. Is your instructor heavy or light? A mix of one big / one small, not too bad, but two big boys and you’ll never be able to get much fuel on board. If you do go R44, you could look around and probably find a good price on a R44 Raven I which in some places can be more near the R22 than full R44 Raven II pricing.
I trained in a R22. I'm 90kg and my instructor was 95kg - worked OK.
Last edited by RMK; 4th August 2012 at 23:21.