Cross Country Sailplanes: In the Flatland

[Snip]

Std Jantar 2 sits tall on the gear and is pretty honest about 1/40,
better than the DG100/101. DG has a bit nicer handling with
parallelogram stick, but loses on performance. Very strong though.

Payload should be okay. Have you seen Adam's Jantar?

PIK-20B if you want a bit more performance and landing flaps. They
may be hard to rig after the temp exceeds 70F or so.

EDS with composite tank won't add much weight to either and will
lighten your wallet a bit.

Frank Whiteley



Thanks for your thoughts, Frank! (I'm not quite understanding the "EDS
with composite tank" part of this though.)

Chris.

[Snip]

Std Jantar 2 sits tall on the gear and is pretty honest about 1/40,
better than the DG100/101. DG has a bit nicer handling with
parallelogram stick, but loses on performance. Very strong though.

Payload should be okay. Have you seen Adam's Jantar?

PIK-20B if you want a bit more performance and landing flaps. They
may be hard to rig after the temp exceeds 70F or so.

EDS with composite tank won't add much weight to either and will
lighten your wallet a bit.

Frank Whiteley



Thanks for your thoughts, Frank! (I'm not quite understanding the "EDS
with composite tank" part of this though.)

Chris.

At 02:36 10 August 2009, Eric Greenwell wrote:
Chris Prince wrote:
I'm not a frequent reader of rec.aviation.soaring, so at the risk of
asking a common question, I'll pose my question. I fly cross country
here
in the meaty middle (cheesy middle? ) part of the US-- mostly
Wisconsin,
often Minnesota, sometimes Iowa, Illinois, South Dakota, Michigan. I
often
land off-field (in 50 cross country flights, or attempts, I've landed
off-field on 26 flights).

I'm curious about the "back-story". Who retrieves you all those
times?

I am fortunate to fly with a club where many people crew. A very good
buddy of mine -- Walter Johnson-- has crewed the most (21 flights). For
more details than you wanted--
http://www.d.umn.edu/~cprince/soaring/Flights/

snip

I want to change ships. Presently, I fly a Schweizer 1-35. While I
enjoy
the heck out of flying this ship, and have it pimped out just right
,
I
have reached max gross weight on the ship, and want to add more toys.
For
example, I want to take my ship out West to do some mountain flying,
and
thus need to add an O2 system. While some people decide to fly over
max
gross weight, I don't choose to do so.

The SSA Sailplane Directory shows a 260 pound payload for the 1-35,
which seems enough to carry plenty of toys. The gliders I'm familiar
with have a *lower* payload, so I'm not sure a different glider will
improve the situation. If you are likely to be close to the max cockpit
weight, you better carefully weigh any glider before you buy it and
determine the allowable cockpit load, or you will probably still have
the over-gross problem.

My 1-35 indicates 685 max gross in the manual. When I had all the
equipment I wanted (included 02 system), it weighed in at 520, leaving
pilot weight at 165. I weigh in at about 170 lbs. Parachute, clothes,
water etc. bring me in over gross.

I agree, I need to weigh any glider before buying.

Chris.


--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly

* "Transponders in Sailplanes" http://tinyurl.com/y739x4
* Sections on Mode S, TPAS, ADS-B, Flarm, more

* "A Guide to Self-launching Sailplane Operation" at
www.motorglider.org

"Chris Prince" wrote in message ...
[Snip]

Thanks for your thoughts, Frank! (I'm not quite understanding the "EDS
with composite tank" part of this though.)

Chris,

Frank is referring to the Mountain High oxygen system. They have created a light weight Kevlar O2 tanks.
http://www.mhoxygen.com/

Wayne
HP14 "6F"
http://www.soaridaho.com/

Thanks for your thoughts, Frank! (I'm not quite understanding the
"EDS
with composite tank" part of this though.)

Chris.

http://www.mhoxygen.com/ the EDS O2 system reduces your tank size by
a factor of 3 (http://www.mhoxygen.com/images/Duration-Chart.pdf) for
the same given amount of man hour usage over a standard constant flow
regulator, and a composite tank (carbon or kevlar wrapped aluminum
cylinder) is very light compared to a steel cylinder, but neither are
cheap, although it may be a cheaper option to install a $1200-$1500
oxy system in your plane you have rather than buying a new plane to
install around a cheaper oxy system.

If you have a forward hinged 1-35, by switching back to a removable
canopy, you will gain much usable cockpit load... I'm sure any 1-35
driver with a non-hinged canopy would be happy to trade. Of course
this is of no help if you are really just rationalizing buying a new
ship (which there is nothing wrong with of course, and incidentally no
cure for either- other than a new ship

-Paul

sisu1a wrote:


http://www.mhoxygen.com/ the EDS O2 system reduces your tank size by
a factor of 3 (http://www.mhoxygen.com/images/Duration-Chart.pdf) for
the same given amount of man hour usage over a standard constant flow
regulator, and a composite tank (carbon or kevlar wrapped aluminum
cylinder) is very light compared to a steel cylinder,

Aluminum cylinders are readily available, and much lower cost than the
composite wrapped cylinders. A 22 cubic foot (626 liters) aluminum
cylinder weighs about 8.5 pounds; the closed equivlaent Kevlar wrapped
cylinder weighs 4 pounds. You pay a lot for the 4.5 pound savings.

I do use and recommend the Mountain High EDS-O2D1 controller (it's not
just the oxygen savings, but the automatic operation and warnings it
provides). My 13 cubic foot aluminum bottle lasts approximately one hour
per 100 psi of bottle pressure when flying in the 14,000-18,000 range at
places like Ely, Parowan, and Minden. Practically speaking, that's about
3 flights off a full (~2000 psi) bottle, and the bottles are cheap
enough to own two, so I always have a full spare ready to go in the trailer.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly

* "Transponders in Sailplanes" http://tinyurl.com/y739x4
* Sections on Mode S, TPAS, ADS-B, Flarm, more

* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org