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skippydiesel

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skippydiesel last won the day on July 8

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About skippydiesel

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  1. skippydiesel

    Beauty in the Eye of the Beholder?

    Perhaps the exceptions prove the theory ?????
  2. skippydiesel

    SSB Lithium Iron batteries

    Soooooo - Are we in favour of fitting the latest generation of Lithium Iron(LiFePo4) batteries to sport aircraft ? OR Not?
  3. skippydiesel

    Beauty in the Eye of the Beholder?

    All good stuff Nev however I believe that form can & should compliment function. For a long time now I have been of the opinion that aircraft (& sports cars) designed on the right side of the Atlantic tend, to to my eye, to be more elegant than those on the left. There are many exceptions for sure but in my completely biased opinion the trend is clear. Our cousins in the not so United States of A tend towards size & power, where our brothers/sisters in Europe favour economy & elegance.
  4. skippydiesel

    Small turbines 100hp 130hp

    Me thinks that similar criticism might be made about erly automotive/aircraft engines and look where all that R&D effort has got us against all the odds, piston engines that are actually fairly reliable, quiet (in some applications) and fuel efficient.
  5. skippydiesel

    Small turbines 100hp 130hp

    Thanks Facthunter - Mostly well above my pay grade however the intermediate design must be the Wankle. Such a sham that it did not attract more investment/research. If it had had a nats nuts of the piston engines R&D it would be a ripper small aircraft engine by now.
  6. skippydiesel

    Beauty in the Eye of the Beholder?

    I am a voluble advocate for Function befor Form - however I started this conversation to elicit responses from admirers of Aircraft Form. Function has little to do with it.
  7. skippydiesel

    Small turbines 100hp 130hp

    I have been lead to believe that the design of the piston internal combustion engine has been inherited from the steam engine. The source of the energy & how it is "liberated" to drive the pistons is different but he principal of a reciprocating piston, driving a crankshaft, to produce rotational movement remains the same.
  8. skippydiesel

    Small turbines 100hp 130hp

    I am griped by the fantasy of flying a very small turbo prop, mated to an air frame that could make best use of its characteristics BUT I am enough of a realist to understand that with existing technology, it is, unfortunately, just not cost effective. I have always liked the idea of an engine that rotates in the same plane as the prop (Wankle & jet turbines) - they just make more sense than the modified steam engine that motivates most of us.
  9. skippydiesel

    Avoiding the Base-to-Final Stall/Spin

    As I see it, the angular/squared off circuit pattern, is a method for instilling a disciplined/by the numbers approach to landing. Personally I like the challenge of doing it this way - the environment is always changing, ( aircraft load, pressure altitude, wind,, perspective, terrain, even runway width) so there is no such thing as a perfect landing every time no matter how good/experienced the pilot is. A wee bit contradictory - the only time I am inclined to do a curved approach is when I am nonpracticing an engine out - I nearly always have to "slip" to bleed of excess hight. Other factors for consideration/debate: The aircraft waiting to line up - a curved approach gives the waiting pilot less opportunity to see/pick up an aircraft on final. When does the curvy pilot make his/her call "on final"
  10. skippydiesel

    SSB Lithium Iron batteries

    I hear you - the way I see it is - for those few seconds (or less) that the circuitry is cranking slowly it will be overheating. Unless it is designed for this sort of "staged" current delivery it will shorten the life of the stating system (particularly a Rotax sprag clutch).
  11. skippydiesel

    SSB Lithium Iron batteries

    Hi Bruce, I am sure the smart people on Forum will explain this better than I do: A starter motor & associated circuitry will only draw what it needs from a battery supply that is equal too or better than demand. So in practice if you get a fast cranking response (usually judged as speed) that just great, good nothing to be concerned about. In fact it is the opposite (low cranking speed from a weak or too small a battery) which is most likely to cause damage to the system, overheating and a fire.
  12. skippydiesel

    SSB Lithium Iron batteries

    Sorry Markdun - I still think there is a problem. Just may be if the system cranked slowly at all times & I had had a few beers, I might be persuaded that it was "normal" (withe one eye closed) BUT To crank at different speeds, man even totally blotto, I doubt that I can be persuaded that all is okay. Hay! but if you are happy that's all that counts. Just so you get my comments in perspective - I am the anally retentive person who goes out and purchases a new battery, as soon as I notice even the slightest drop of in performance (usually in winter). This all started after experiencing a few Canadian winters and their impact on the good old lead acid automotive battery.
  13. skippydiesel

    Avoiding the Base-to-Final Stall/Spin

    I think one of the aspects of converting from GA - RAA that I found most difficult, was the gut (as apposed to intellectual) understanding of how a low inertia aircraft behaves in the circuit particularly on the turn to final. When your speed "over the fence" is about 40 knots and your aircraft is about 300 kg you have to pay attention to airspeed on that last turn. So easy to stall in the turn. I try to make my base leg no lower than 60 knots, use minimal aileron and lower the nose (can always bleed off any undesirable air speed). Something I have to be very aware of : I usually fly alone, so when I have a passenger it makes a big big difference to how my little beauty handles in the landing phase. I must confess. despite trying to allow for the extra weight, my landings with passengers are not always a thing of grace & beauty.
  14. skippydiesel

    SSB Lithium Iron batteries

    Great news Kyle - hope you keep us all informed of this development.
  15. skippydiesel

    SSB Lithium Iron batteries

    Its "news to me" that Lithium batteries need to have a "wake up" period. If true for all/most it concerns me - with my minuscule understanding of electrical /automotive starting systems it seems to me that with a low current delivery, you will be heating up your circuitry (especially starter motor wiring). This will inevitably shorten the life of your starter motor, if a Rotax, the sprag clutch and in the worse case scenerio, start a fire. Current draw should be the same, whatever battery you install, ergo fuse size should not need to be increased - this is a symptom of an over loaded starting system, not a more powerful battery. Most pilots will be looking for an instant, high energy, turn over & start. Lazy cranking must be addressed ASAP
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