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Discussion in 'Australia' started by Precis, May 17, 2020.
That's not the Guzzi.
Yep - reckon that's the one! Rapt I was able to identify the engines. Very seriously cool toy.
Don't wish to introduce any pedantry here but it should be noted that the Barr and Stroud and the Argyll engines were of Burt McCollum design and were of the single, oscillating sleeve type. The others mentioned - Panhard, Voisin, Minerva, Mercedes et al were of the very different double-sleeve type (which only reciprocated) and manufactured under Knight Kilbourne licences.
Daimler were the first to employ this design in 1909 when poppet valves were less reliable and the sleeve valve arrangement offered greatly increased volumetric efficiency. It was almost mechanically silent in operation, a feature much valued by those who were able to afford such expensive cars. As an unconnected aside, the world's most powerful piston aero engine was the H24, Napier Sabre which, on test, produced over 5,500 hp from a 37 litre displacement. It was a single sleeve-valve type. So were the Bristol radials.
Contrary to the Motor Cycle's predictions, the B&S engine had a very short production life - it's only (and rather doubtful) distinction is that one was used by George Brough in a Brough Superior. Nevertheless, the sleeve valved engine was of great interest and much technical merit.
They also made aerop
They also made aeroplanes!
Getting on to aero engines, when the first guy to actually fly a plane - Gustave Weisskopf, who did so in front of journalists more than two years before the charlatan Wright brothers introduced lawyers - stopped building planes (when the Wrights got a patent that meant he's have to pay them a patent fee for anything he invented) he continued making engines only and they were as innovative and successful as his single-wing aircraft. But I have no idea how they worked...
*It was Aussie pilot and aircraft investigator John Brown who pulled together all the info about Weisskopf - he changed his name to Whitehead in the USA - but no less than the Smithsonian has a dodgy deal and vested interests in suppressing the truth.
Sound like a conspiracy theory? Janes Aircraft doesn't think so; You be the judge: http://www.gustave-whitehead.com/
Richard Pearce first flew on the 31st of March, 1902, well before Whitehead in August of the same year.
Err, sorry, no:
"Mch 31, 1902 - First powered flight. Estimated distance around 350 yards. Similar to the first Wright Brothers flight, ie, in a straight line, and barely controlled."
and " By the end of July 1903, Pearse had achieved flights of around one kilometre in length, and perhaps even more amazingly, some of them included turns !"
In contrast, Whitehead "on August 14, 1901, invited the press to witness his first, successful, manned, powered flight." and "After the August 14 1901 flight, Whitehead continued to make short flights over the next five months. He then developed a more powerful, diesel engine, calling his new plane “No. 22” and performing even longer flights, one including a full circle. (Flying a 360° circle was the accepted standard for proving an aircraft was controlable in early aviation.) The circular flight was made over the shallows between Charles Island and Bridgeport on Jan. 17, 1902"
And whilst I'm here - and I have to admit to not reading all the pages of this thread - I'll post this one which, if fairly easily guessed, undoubtedly is one of the handsomest engines ever.
Thread drifts often provide fascinating diversions.
My father was taught to fly in 1931 by Bert Mercer in Washdyke, NZ. Mercer was fairly early on the scene of Antipodean aviation (Dad also flew with Bert Hinckler in Australia) and my father told me that Mercer had known Pearse and that the claims made of his flights were true. Certainly, there were several who claimed to be direct witnesses of these events with their accounts being published many years later. Of course, the Mercer claim made to my father must now be hearsay but the claims made for Richard Pearse do seem to have some credible foundation.
Where he stands relative to Weisskopf/Whitehead and the others I would not know. What is certain, however, is that as already has been suggested, the Americans will not allow history to be rewritten, regardless of what evidential material might become available. So there!
AJS Porcupine? (late and after a bit of Southern Comfort!)
You (or the Southern Comfort) get the cupie doll!
So is the Ariel 5T - or is it an HS?
More here; https://www.mcnews.com.au/a-rare-gilera-500-4/
Ten hours on this piston
I know what I'd call that engine!
That is cool, some friends operate this
A rotary in that the cylinders rotate around the stationary crank, fuel and castor oil go into the crankcase through the crank, no carb just a tampier and although it is four stroke it only has one valve per cylinder.
A hundred year old design, oh, and we fly it!
Don’t start me, fair warnings
Bloody Kiwis flew before the Wrights.
Do you ever clean the air filter or change the oil, some Cinderella’s have smaller slippers
I agree about the drift