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  • JS3 For Sale

    From John Seaborn (A8)@21:1/5 to All on Sat Oct 1 14:35:59 2022
    JS3 Jet 15/18 For Sale. Includes COBRA trailer, also in excellent condition. Best for pilots with competition and high-performance glider experience. Located in Colorado. Please email for details [email protected]

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  • From Sean Franke@21:1/5 to All on Mon Oct 3 14:26:56 2022
    On Saturday, October 1, 2022 at 3:36:01 PM UTC-6, John Seaborn (A8) wrote:
    JS3 Jet 15/18 For Sale. Includes COBRA trailer, also in excellent condition. Best for pilots with competition and high-performance glider experience. Located in Colorado. Please email for details [email protected]
    https://wingsandwheels.com/classifieds/jonker-sailplanes-js3-18132266751.html

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  • From Eric Greenwell@21:1/5 to All on Mon Oct 3 14:55:58 2022
    On 10/1/2022 2:35 PM, John Seaborn (A8) wrote:
    JS3 Jet 15/18 For Sale. Includes COBRA trailer, also in excellent condition. Best for pilots with competition and high-performance glider experience. Located in Colorado. Please email for details [email protected]

    What's the replacement?

    --
    Eric Greenwell - USA
    - "A Guide to Self-launching Sailplane Operation"
    https://sites.google.com/site/motorgliders/publications

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  • From waremark@21:1/5 to All on Sat Oct 8 12:20:07 2022
    On Saturday, 1 October 2022 at 22:36:01 UTC+1, John Seaborn (A8) wrote:
    JS3 Jet 15/18 For Sale. Includes COBRA trailer, also in excellent condition. Best for pilots with competition and high-performance glider experience. Located in Colorado. Please email for details [email protected]

    "Best for pilots with competition and high-performance glider experience. Located in Colorado." Do you consider that the JS3 is particularly demanding to fly by comparison with other flapped 18m gliders?

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  • From John Godfrey@21:1/5 to waremark on Sun Oct 9 08:45:48 2022
    On Saturday, October 8, 2022 at 3:20:09 PM UTC-4, waremark wrote:
    On Saturday, 1 October 2022 at 22:36:01 UTC+1, John Seaborn (A8) wrote:
    JS3 Jet 15/18 For Sale. Includes COBRA trailer, also in excellent condition. Best for pilots with competition and high-performance glider experience. Located in Colorado. Please email for details [email protected]
    "Best for pilots with competition and high-performance glider experience. Located in Colorado." Do you consider that the JS3 is particularly demanding to fly by comparison with other flapped 18m gliders?
    As a JS-3 owner and middle-of-the-pack contest pilot, I find the JS-3 a delight to fly and have (after intentional provocation) not uncoverd any bad or surprising behaviors whether 15M, 18M, empty or fully ballasted. All 18M racing ships are slippery, so
    a direct transition from say a 2-33 would likely be a bigger than desired step. FWIW

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  • From Rodrigo Silva@21:1/5 to All on Thu Oct 13 15:10:06 2022
    what do you mean by slippery?

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  • From Andy Blackburn@21:1/5 to [email protected] on Thu Oct 13 15:51:10 2022
    On Thursday, October 13, 2022 at 3:10:08 PM UTC-7, [email protected] wrote:
    what do you mean by slippery?

    Slippery means exceptionally low aerodynamic drag. In the case of the JS3 it has very low drag across a wide speed range as well as a small wing area and resulting high maximum wing loading. This enables it to have a very high L/D at high cruise speeds.
    It also means that if you point the nose at the ground with the spoilers retracted and the flaps negative it will pick up speed in a hurry. So, if you let yourself get into a nose-down attitude you will potentially get to Vne surprisingly quickly if you
    are not used to it.

    After two contest seasons with my JS3 I have not found any bad habits either, but compared to my ASW-27B it will get to 100, and then 130 knots very quickly with very little change in attitude when you transition from climb to cruise. It's actually quite
    satisfying - I don't think any glider short of the Concordia runs at high speed like a loaded JS3 with the 18M tips. I've never flown a glider that wanted to cruise at 120-130 knots. But what comes with that is that one is well advised pay attention the
    the airspeed indicator.

    Andy Blackburn
    9B

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  • From Ron Gleason@21:1/5 to [email protected] on Thu Oct 13 17:03:51 2022
    On Thursday, 13 October 2022 at 16:51:12 UTC-6, [email protected] wrote:
    On Thursday, October 13, 2022 at 3:10:08 PM UTC-7, [email protected] wrote:
    what do you mean by slippery?
    Slippery means exceptionally low aerodynamic drag. In the case of the JS3 it has very low drag across a wide speed range as well as a small wing area and resulting high maximum wing loading. This enables it to have a very high L/D at high cruise speeds.
    It also means that if you point the nose at the ground with the spoilers retracted and the flaps negative it will pick up speed in a hurry. So, if you let yourself get into a nose-down attitude you will potentially get to Vne surprisingly quickly if you
    are not used to it.

    After two contest seasons with my JS3 I have not found any bad habits either, but compared to my ASW-27B it will get to 100, and then 130 knots very quickly with very little change in attitude when you transition from climb to cruise. It's actually
    quite satisfying - I don't think any glider short of the Concordia runs at high speed like a loaded JS3 with the 18M tips. I've never flown a glider that wanted to cruise at 120-130 knots. But what comes with that is that one is well advised pay
    attention the the airspeed indicator.

    Andy Blackburn
    9B
    How about the 20+ MPH cross wind landings at density altitudes of 9,000+ MSL?

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  • From Rodrigo Silva@21:1/5 to All on Thu Oct 13 18:50:35 2022
    Em quinta-feira, 13 de outubro de 2022 às 19:51:12 UTC-3, [email protected] escreveu:

    got it, thank, great explanation!

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  • From Clay Thomas@21:1/5 to [email protected] on Sun Oct 23 19:33:39 2022
    On Thursday, October 13, 2022 at 7:50:37 PM UTC-6, [email protected] wrote:
    Em quinta-feira, 13 de outubro de 2022 às 19:51:12 UTC-3, [email protected] escreveu:

    got it, thank, great explanation!
    That's why you have the LXNAV lady warning, "OVERSPEED, OVERSPEED!"

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  • From John Seaborn (A8)@21:1/5 to All on Sat Oct 29 14:36:06 2022
    SOLD

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