....."Franks method involved feeding the pig one turnip at a time, this required chewing and swallowing. Our liquid turnip will be fed by Gastric tube straight to the stomach, this will allow a continuous measured flow and regular flatus production. Another tube, inserted in the, .......the, ......other end, will feed the gas to the primary collector. This is a collapsible bladder, when it's at 75% capacity a wax seal will 'pop' allowing the gas to pass to the secondary, rigid, tank. When both tanks are at full pressure another seal will 'pop' allowing the gas to flow down the reduction tube. This will further increase pressure and as the gas passes over the igniter 'Whoooosh' ! we get thrust and forward momentum. With very little forward travel, air will be forced down the air induction tube mixing with the gas and doubling even trebling the thrust ! and away you go....any questions ?"... Neiwil paused. "Just two", said Tailspin, "First, what happens when the turnip juice runs out ?" Neiwil smiled, " Not a problem, there will be enough gas in the 'tanks' for a further 3 or 4 minutes burn, plenty of time to find a suitable place to crash, a field full of hay stacks, a water logged meadow, you know, somewhere soft !... next question ?". Tailspin looked unsure about that answer but asked, " Do you actually propose the PIG! should fly that.......'thing'?. Neiwil seemed surprised by the question, " Well....YES!, but only the first flight, it could be very dangerous and I wouldn't want you killed in the first attempt, if it all goes well, we'll suspend the pig somewhere back here in the body and you can have the BIG chair, we''ll get the press and local dignitaries around and put on a 'show', you'll be famous!". Neiwil waited while Tailspin pondered this, "OK, let's go for it, what's the worst that could happen ?" was Tailspins decision..."Ohhh! great, right", said Neiwil, who silently in his head had reached number 124 in the list of worst things that could happen. Neiwil began organizing, " Right! I need you to go to Lee Coopers and get as many firkin barrels as he's got....", Tailspin cut in " aye! I said I was with you, there's no need to swear !!!", Neiwil frowned, " Firkin, firkin 9 gallons! light weight but easy to break up and reform, small though so we'll need a lot, right! when you've done that, call in at Swede Rudibakers Farm and get a bag of turnips. When you get back mash the turnips and sieve them..." Tailspin interrupted, " how many turnips ?", Neiwil thought for a moment and said, " Ohhh, seven or eight.....thousand should do!, I'll get started on the detailed blueprints and then make a start on the wings. This is going to have to be bigger than the 'Buttwing', it's going to be a very BIG! job overall, it could take.......blimey! all day to finish!".... Everything ran with the precision of a Swiss clock, Tailspin over wound it, the chocolate fingers melted and Neiwil shot the bloody annoying cuckoo, but by days end it was finished. Standing side by side in silence, Neiwil and Tailspin admired their handiwork....Tailspin spoke first, "errrrrm!, it doesn't look much like the 'Buttwing', are you sure that's right, I mean, what are you going to call it ?". Neiwil thought for several minutes, occasionally he said, "no" or "nah" and even "nope", then he asked, "how many firkins did we use in the end ?". Tailspin did some quick mental arithmetic and said, " two!, oh hang on", he removed his boots and Neiwil offered up a silent 'thank you' for the giant holes in the feet of Tailspins tights. After a brief pause Tailspin said, " Right !, got it, we used a grand total of........