Re: Rowley's 400 and the Magic Tube .
relax we are all partially correct in various flow regimes. I got the gist of the NASA bulletion when it was news and implies shape of wing is more for streamlinging in zone of speed need more than a lift factor. Alas Bernoulii venturii effect does not explain or apply to inverted flight either. It does play a big part in carbs and down force in racers >>> Once above some threshold of speed in narrows and over openings.
I am fascinated by wing in ground effect so know one can also compress enough air flow under something to lift off surface for nil traction but less drag.
Peel lost power at each change till almost unriddable by time I got to 04 INOA, single to dual carbs, small port lower CR to larger higer CR Combat head/gasket and semi open megaphone fell off for open header 2-1 obnoxious noise maker that could not take enough throttle to cross mowed grass w/o stalling reminishant of the steady state 850 but still just good enough once over 2000 to flow with other timid traffic. Same semi modified Amal pair on Trixe with Combat head, thick gasket no base plate and standard peashooters is plenty spunky off idle to tail steer off pavement and kind of pisses me off with 19T it wants to pull hardest at 90, which is hard to resist. I only know what I felt which each componet change, not caliming to understand why the ups and downs of response in such similar 750s.
On point of this subject the loss of the semi open mega was the worst disappointment. I installed a turnable washer in Ohio for return home as some HDs do, ugh, did not do anything but slighty reduced the obnoxious pops loudness so just left it edge on till removed. Black caps could also stiffle flow through carbs.
But another interesting thing that might apply here happened, A vendor sold me 2 Amal race needles I packed away til Wes said his were worn and stumbling so we put them in his before leaving camp and got to first gas stop 50 miles with him saying he hated them as too dam responsive to hold curise easy and terrible milegage so I gave him Peels regular needles, Peel got the race profile and they did improve the response enough did not have to baby throttle and clutch to get going and surprised both me and moder biker at a small town light with cargo helping pulled a 30* wheelie across intersection unintended but nursed it once up by adding throttle. These needles are in 72Trixie now with the few other quick richness features so can only cow boy so much before spun out of control.
If we had enough electricty maybe could use this flow assistor w/o moving parts
https://en.wikipedia.org/wiki/Electrost ... ccelerator
There is another principle in flight and flow that seems only Peel can enjoy employing -> powered ballistics.
