Jump to content

Exadios

Members
 View Profile  See their activity

  • Posts

    912

  • Joined

  • Last visited

 Content Type 

Everything posted by Exadios

  1. Exadios
    According to the article the weight penalty of the LS1 over the Ly is 20Kg. I assume that they are including the weight of the radiator and coolant, etc, in that comparison. The LS1 is not run at anywhere near its maximum which is 350 hp at 5400 RPM. When installed WOT is 280 hp at 4500 RPM. The agreement between CASA and the owners Pawnee for the original Ford V6 implementation was 1000 hours. I don't know if that carries forward for the LS1 but, even if it does, the cost of the latter makes it very much cheaper than the Ly at 2000 hours. Of course the real life of an Ly is closer to 1000 hours than 2000 hours.
  2. Exadios
    One of the rationals behind put an auto engine in an aircraft is the advantages given by higher manufacturing production volumes - the sharing of design costs over a larger market and, from the GFA figures and the article, the increased reliability. The problem with the Ly is that they are just soo unreliable. I notice that the GFA uses the Lycoming's rated life of 2000 hours. However, I don't believe that any of the gliding clubs have got this sort of life out of an engine.
  3. Exadios
    I wouldn't be surprised at all with a 20% efficiency difference. I believe that one of the tweeks is to adjust the LS1 EMS for max effeciecy at the revs used for a climb of 600' / min.
  4. Exadios
    It seems that there was a LS1 (V8) powered tug at Lake Keepit for a while on trial a couple of years ago. It is basically the same as the Kingaroy LS1 edition I believe. It is operating under a Special Certificate of Airworthyness. There is a page at the GFA giving some running cost comparisons.
  5. Exadios
    Lake Keepit has a Callair. It has the original Lycoming, I believe.
  6. Exadios
    My understanding (which may be wrong) is that, in effect, there is allowed to be only one reengined tug in Australia. The developement at Kingaroy is the result of an agreement with CASA and the latter are not interested in allowing the other clubs to do the same. If the option was avaliable to other clubs I feel sure that all three aerotow clubs here in WA would have reengined our tugs. I image the the eastern states clubs woud do the same. The thing is that it only takes having to fork out $50000 for engines on a few occasions to make one think of possible alternatives. The normal climb rate with a glider attached is about 600' / min. Like all clubs we too thermal the tug to get the 1000' / min that you have observed.
  7. Exadios
    The article does not say but I seem to remember hearing that it was engineered and manufactured as a one off in the 1990s. I seem to remember that this was a major problem then but I cannot remember the details. If you are interested I'm sure that if you write the club they will give you details.
  8. Exadios
    A more dramatic video of a snatch launch.
  9. Exadios
    There's an interesting article in the September / October, 2011, edition of "Gliding International" about Kingaroy Gliding Club's V8 Pawnee tug. The old Ford V6 has been removed and replaced with a GM 5.7 liter V8. As installed the engine develops 280 hp at maximum engine RPM of 4500. GM's specifications for the engine are: max. power 350 hp at 5400 RPM (red line is at 6000 RPM). So the engine is derated for use in the tug. The engine drives a three bladed prop via a 2:1 reduction drive. Climb out is typically at 4250 RPM which yeilds a climb rate of 600' / min. for the tug glider combination.
  10. Exadios
    Land out in a glider (as we know them now) is a reasonably safe operation if care is taken but landing one of the WWII constructions in a paddock must have been a truely frightening thing to do.
  11. Exadios
    I've had a very near miss at 10000'.
  12. Exadios
    A Popular Science article about gliders.
  13. Exadios
    A video of a 1945 US forces airshow featuring captured German aircraft (among others).
  14. Exadios
    Gliders have flown in for past Langley events. I'm not sure what the issues where this time. I'm not sure that I would like to fly a glider over the Perth metroplex myself. The lack of landing out opportunities must be very noticable. Of course given that the fan at the front may stop at any time and the height restrictions that apply I would have the same nervousness with flying a SLA to Langely. :-):
  15. Exadios
    Press release.
  16. Exadios
    Gilder (amoung other planes) at the Langley Park Flyin.
  17. Exadios
    A new gilder sale site has been set up.
  18. Exadios
    Presumably the pilot did not do a circuit.
  19. Exadios
    Glider pilots seek Carpentaria's Morning Glory.
  20. Exadios
    Article.
  21. Exadios
    I can recomend the Topeak Road Morph. I use this for aircraft tires.
  22. Exadios
    Plane in emergency Leeming landing
  23. Exadios
    [medio=full]98[/medio]
  24. Exadios
    A gliding club that has perfected the art of launching while simultaneously playing the William Tell Overture - very impressive!
  25. Exadios
    [medio=full]97[/medio]
×
×
  • Create New...