MTOW on the 230D
I have been considering buying the 230D (or similar) as it's range and larger size suits my needs (occasional interstate travel with 2 people) plus hour building. However the MTOW has me a little confused. Why is the craft a 2 seater if it can't lift 2 people with full fuel? I'm a big boy both in height and a little in roundness so I am a little disappointed that with no fuel this "bigger" plane can only lift 2 adults @ 110kg. (If i understand MTOW correctly - (plane weight + people/luggage + fuel = MTOW)).
So my question is this -
Is the aircraft MTOW purely for the benefit of RAA registration or can i register it under GA rules with a higher MTOW? I'm all for jumping on the treadmill here but even if i hit 95Kg which for me I would have to basically have no body fat + full fuel (.77KG by 135L) leaves about 31Kg for the other half.
I really like this plane but I'm at a loss. Any help would be greatly appreciated. Otherwise any recommendations of how to proceed. I'm new to aviation so be gentle. Thanks in advance.
The J230 airframe concept is shared with the various J400/J430 models, so the structure was designed, to a large extent, around a 700kg MTOW. It's also built around some of the requirements in the regulations for using composite materials which means that the loads we used to test the airframe are 20% to 50% higher than you'd use on a metal type. This makes it rather over-built for the job and means that the empty weight is higher than it would be compared to a type designed from scratch for a 600kg MTOW.
The tanks are also a little on the large side, with full fuel giving something in the order of 5 hours endurance: if you don't need all that range, leaving the tanks a little less than full will give you some payload back. Options like fancy instrument panels, deluxe upholstery etc all add weight too, so a bare-bones approach is your best bet for maximising carrying capacity.
And, yes, the aircraft can absolutely be operated at a higher MTOW if it's GA registered - as I said, 700kg is the normal value.
In Australa, the MTOW is reportedly 700 kg / 1,540 lbs for for the J430. Reportedly, the only real difference between the J230 and the J430 is the added two seats in the J430. If you're categorized "Experimental" in the USA, reportedly you can fly the J230 at the 700 kg, 1,540, MTOW, but, not if you are categorized as a LSA.
LOVE MY JABIRU S/N 246, 2006 230C, BUILT AND INSTRUMENT EQUIPPED BY THE SUPERB RON WEST, LINCOLN, CALIFORNIA.
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