The risen did a south atlantic crossing :
Fly Risen Challenger En
I have not found the amount of fuel burned but it must be quite effecient for such long flights.
200kph on 6L... that's something.
From my hometown : 188kph @ 6.8L, diesel!
Document vierge sans aucun style
gazaile2.nmr7.free.fr
It’s clear that the Risen is an efficient aircraft, but....The bit that miffs me is when manufacturers (many) claim a Rotax 912 in their airframe uses 2 1/2 litres per hour less at 75% than Rotax Engineers and technical specs claim (or 912s actually use), as Risen do in their specs sheet.
I’m unsure if they believe that is a mark of airframe efficiency for the lazy reader, or they just think all customers are stupid.
A Rotax, or any motor for that matter, uses the same fuel at 75% whatever airframe it’s in. I just don’t get the logic.
Regarding your local plane, thank you so much for that link. Lots of info to digest, although something wrong with the writing, I can’t read it

.
Funny, I can’t remember what I had for lunch but can recall my only language subject of 52 years ago and can still remember enough to get by.
Photos are beautiful and I look forward to trying to read it in full.
Merci!