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Monday, 17 October 2011

An autumn flight to a nearby field

Some views of the engine when I drain the excess oil from the cylinders, some engine sound when starting up. The rest is just for your eyes...

7 comments:

  1. Hi Fred,
    Very beautiful video and congratulations for your blog. I´m owner a bingo simonini Victor 2 150 hours ago.
    http://www.youtube.com/watch?v=ynotKvvxnWE

    Greetings from Spain

    ReplyDelete
  2. Hi Fred,
    Good video. I also suffer for sparkplug oil clogging :) Simonini said, the re-design the head.
    Here is some video http://www.youtube.com/watch?v=YSSGRB4kaBU
    Peter From Hungary

    ReplyDelete
  3. Hi Fred,
    Yesterday alone I recorded the a sustainable 9.7 !!!! l/h on my Simonini. 4650 rpm 110 km/h, outside temp is 14 C. I forgot to tell you that all my recordings are with a big bushwheel. For the winter previously I tried to tape 1/3 of the radiator, because coolant was only up to 65 C no more. But over 13-14 the engine gets warmer than 85 and EGT goes beyond 610 C, and CHT constantly on a 120-130 C level. By removing this EGT drops to 590-600 and cyl head temp goes below 110-100.
    The 9.7L consumption in 4600 RPM makes EGT going back over EGT 600-610 and CHT above 120.
    So my guess that this is the almost ideal burning but as the pertrol-oil is also the coolant/lubrication, it is too lean mixture now. Peter from Hungary

    ReplyDelete
  4. Peter,
    I’m impressed by you consumption numbers. It is true that the cooler weather will help us a little but below 10l/h, wow..!
    When you say “sustainable” I assume you are talking about consumption measured at a given moment and that you are able to maintain that consumption in level flight for “a while”.
    What consumption do you get if you go for an intentionally calm (low consumption) flight for 1 hour or more? Are you then, when measuring the actual consumption over time and not just instantly, still able to get a consumption under 12 liters?
    At my last, intentionally calm and slow, flight I measured 13.5 l/h.
    Fred

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  5. Hi Fred, yes I definately can maintain with single occupancy an hour flight with one takeoff climbing to 1000-1500 ft AMSL below 12 l/h. I bet it will be even lower if I change back my bushtires, to normal, but I love them so much... :)
    All this without sacrifice climbing performance. I just wonder what an in flight adjustable prop could do for us....
    Peter from Hungary

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  6. Hi Peter, isn't your Victor 2 a 102hp model?

    Alberto

    ReplyDelete

Questions and comment are welcome in French, English and Swedish. Replies will however always be in English.