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    Darby One Design hydro...
    by Westquay πŸ‡¬πŸ‡§ ( Commander)
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    Westquay
    Commander
    πŸ“ Darby One Design hydro...
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    It certainly could, Dave. I tend to think a residual wake from his own craft is as good a cause as any as you say he didn't refuel as he was keen to get his second, return, run in for the record, which he would definitely have achieved as he had already gone much quicker on the first. it's reckoned he was doing around 340mph when the accident happened. A great loss.

    Colin, not sure why your thread is on this one, but in a helicopter the only engine you would find, would be a glow engine, not a diesel. So I think we're still looking into an easy way to make our own model diesel fuel. The only reason our little engines are called diesel is because, like a big diesel in a car or lorry, ours are compression ignition. A glow engine is merely a 2 stroke with the glow plug taking the place of the sparks system on a petrol powered engine. And of course, as if to prove that is the proliferation of 4 stroke glow (and now petrol) engines. Or gas engines as the Americans call them. And they have shot into use because petrol is comparatively cheap and there are small electronic ignition systems of great reliability now available.

    Martin
    boaty
    Chief Petty Officer 2nd Class
    πŸ“ Darby One Design hydro...
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    Martin, I am amazed at your knowledge and skills.
    I like your reference to the possibility that wake from the Dowty was the possible cause of Donald Campbell's crash. I had heard before about wake being a factor as he turned around after his first run without refuelling. This led to the theory that it could have been his own wake as the cause . So many theories about the crash and all are valid as it could have been a combination of many.

    Boaty😊
    Dave Keech
    onetenor
    Sub-Lieutenant
    πŸ“ Darby One Design hydro...
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    Thanks Col as this has really put a bee in my bonnet. Talking of which ---https://www.youtube.com/watch?v=M4dy8MwLXBA
    https://www.youtube.com/watch?v=M4dy8MwLXBA
    πŸ”—
    Fly Powered Airplane Takes Flight
    ▢️
    Colin H
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    As I have never seen one up close I don't know. They only fly inside the camp, but some of the pilots fish in my local lake which is behind the camp, and we chat about models in general and they will sometimes offer help in getting my boat down to the water. They offer advice on my radio systems as the old vintage stuff I have can cause interference. So they advised me to use 2.4ghz here. Next time I meet with one of them I will ask about the engine details.
    Cheers Colin.
    Fair winds and calm waters, COLIN.
    onetenor
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    Well Col tell us about these choppers. What engines are they using. Ignition type etc . Because if you can reproduce this fuel you could make a fortune flogging it.πŸ˜πŸ‘ No names no pack drill we don't need to know that just the blend of the fuel.πŸ€” This secret has been sought after for years.😀
    Colin H
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    It only came my way by an interested fellow modeller who can't be named or location given away. Hush hush job and all that.
    Cheers Colin.
    Fair winds and calm waters, COLIN.
    onetenor
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    Westie You got that right but find me a chemist you can get it from now.πŸ€”πŸ‘
    Colin H
    Commander
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    No just regular diesel with a few drops of methanol, as its a diesel engine it's compression ignition and the methanol is just an additive to clean up the combustion, it's basically a sports mixture used by the fly boys for their helicopters.
    Cheers Colin.
    Fair winds and calm waters, COLIN.
    Westquay
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    I al;ways had to go to the chemist and buy ether and amyl nitrate for my Uncle to mix his own diesel. No methanol.

    Martin
    onetenor
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    Well Colin I'm amazed Because even alcohol fuels need an ignition source .Usually in model engines a Glow plug sometimes a spark plug.Is there anything else in the mix? BTW see my modified post above. We are all fascinated to know how it was done.πŸ‘
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