£30k thielert conversion, only get 1300 hours, that's £23 p/h for new engine fund excluding any maint.Add £14.50 of fuel an hour, thats £37.50 basic and hour
If we went for the Standard engine, I guess that would have cost around £15k, but would have got 2400 hours, so that's £6.25 and hour, then add fuel at £35 an hour, I get £41.25 basic per hour
Looks like it's not that bad, or am I calculating something wrong