Gidday All.

Had a bit of a rethink about what I wrote yesterday and to put things in a
more accurate chain.

The Kangaroo design was not brought to Australia with the Schneiders.

It came into existence as a result of John Wotherspoon, who also provided
the Schneiders with their original workshop at Rosewater S.A., asking them
to build him a high performance two seater. Apart from some work building
Grunaus and assembling part finished kits this was the first sailplane
designed and built in Australia by Schneiders.

John's support for Australian gliding in the late forties and early fifties
was considerable.  He flew Swordfish off carriers during WW11 and brought,
on his return to Aus in the late forties, a Leopard Moth and Olympia. The
Olympia first flew here from Black Top Hill (the ETSA power distribution
station above the S/E extremity of Elizabeth). Knowing John pretty well, I
think the Kangaroo came into being not so much as a result of his need for
a high performance two seater but rather to demonstrate to Aus gliding in
general the credibility of the Schneiders and the huge resource suddenly
available to progress gliding in this country in the future.

Prior to leaving Germany Edmund Schneider Snr had designed the ES49. This
was the aircraft we know in Australia as the ES49b and was aimed at home
constructors. Schleichers built a number of this type under licence to ES. 

The Kangaroo was a new type. Its wing span was more than 2m greater than
the ES49 and it had a larger tailplane, fin and rudder. Other differences
are noted in my earlier post. It also incorporated a shoulder release
system. This type of towline release was used by Schneiders up to and
including the Kookaburra prototype.

As mentioned earlier, the prototype flew out of Gawler and Parafield for a
relatively short period until an offer to purchase it from a farmer at
Boggabri was accepted by John.

A second Kangaroo was ordered by the Towoomba Gliding club. At that time
they were up amongst the leading soaring exponents in australia, spurred on
primarity by Dr Mervyn Hall.

Sometime after the delivery of the Kangaroo it seems the impetus of the
Towoomba club faltered - I think after the death of Doc. Hall. At Mount Isa
the Leichardt Club formed and immediately ordered a Kookaburra.  At about
the same time the Towoomba club offered both their GB11 and Kangaroo to
Leichardt at a reasonable price and in a short space of time they had one
of the best fleets in Australia. From recall Niall Hart was a key player.

The ES50 was designed and built to GFA specs while the second Kangaroo was
being built.  Schneiders in the meantime built the Kookaburra prototype as
the glider they thought Australia needed. The rest is history.

Meanwhile, the ASC under the leadership of Ron Adair, decided to build an
ES49 to replace their Munn Falcon. In fact,at the time, they manufactured
two of everything that required jigging for the ES49.

The first ASC ES49 (ES49 1) was such a success that construction of the
second  (ES49 11) was completed as quickly as possible by utilising the
skills of Hans Zechner full time.

Because the Kangaroo had already been certified as the ES49 both of the ASC
aircraft were designated and certified as ES49b's.

The only noticeable diference between these two aircraft - from recall
VH-GDK and VH-GLL was the canopy. ES49b-1 had its canopy changed from the
lift-off unit manufactured from 1/4" steele tube and covered in 1/16"
perspex to a two piece canopy blown by Harry Schneider similar to that
later used on  the K7.  ES49b-11 utilized the rear of a P51 Mustang canop
for the forward canopy which resulted in somewhat sleeker lines. Handling
was noticeably different due to ES49b-11 being heavier than the original
but variance in performance between the two was always a constant
discussion point around the bar. No variance in performance was ever proven.

Sometime after the ASC ES49b's flew another ES49 was constructed, in
keeping with the original design, by Eric Hader and Klaus Leuffer at
Khancoban -so it varied considerably from the ASC aircraft.

Finally. it would not be out of order to say the ASC ES49b's - mainly due
to their use at early NGS' - played one of the most significant roles of
all aircraft in advancing soaring in Australia.


At 05:38  8/4/02 +1000, you wrote:
>Just to confuse things a bit more, the first page of my log book shows 9
>flights in the ESA49-I and 14 in the ES49-II.  This was the period May to
>Jul 1960 at ASC.
>Unfortunately I was not then in the habit of recording glider Rego letters.
>So it seems that there were a couple of versions on the ES49b?
>Brian Wade
>Personal Computer Concepts
>Uniform Time
>Ph: 07 3371 2944  Fax: 07 3870 4103
>----- Original Message -----
>From: "Noel Roediger" <[EMAIL PROTECTED]>
>Sent: Tuesday, April 09, 2002 5:37 AM
>Subject: Re: [aus-soaring] more ES generations
>> The ES50 needs to be included, alias club 2 seater or the brick.
>> The first Kangaroo was built at Rosewater and funded by John Wotherspoon.
>> After a fairly short period of flying at Gawler Harry and John set a
>> Commonwealth record with a flight from Parafield to Mildura. They could
>> have flown much further but John suffered chronic airsickness. Doc Heydon
>> aerotowed the with his DH82a to Bogabri the next day.
>> The interesting point about the Kangaroo was that it was certified as the
>> "already existing and approved design" - ES49.
>> In reality it was a new design but appeared to be a modified ES49. The
>> fuselage was slightly deeper in the cockpit area and nose and turtle deck
>> rounded instead of slab sided. The nose skid,wheel and tail skid were
>> completely faired and fin and rudder slightly larger than the ES49.
>> The wing used the same section as the ES49 (Go549) but was approx 3m
>> greater in span. Had a cantilever rather than strutted main spar been
>> incorporated the perfomance would have been up with the best two seat
>> sailplanes of that era.
>> When the Adelaide Soaring Club built the real ES49's a minor problem arose
>> regarding the certification as they were considerably different from the
>> already certified Kangaroo.
>> Ron Adair managed to convince DCA that it was basically a smaller Kangaroo
>> with identical spar, longeron and fitting dimensions and as such did not
>> need any further calculations to be made for its CofA.  After a short
>> series of test flights the real and already certified ES49 was certified
>> DCA albeit as the ES49b instead of the ES49.
>> Of note, another ES49 was built to the original plans at Cooma by Klaus
>> Leuffer. Klaus built strictly to the plans while the ASC simplified the
>> design to some degree by incorporating one piece ailerons and blown
>> canopies. There were numerous other small differences but it is a long
>> since I last saw an ES49b and can't remember them.
>> Two Kangaroo's were built.  The prototype was sold to a farmer at Bogabri
>> and the second was built for the Leichardt Soaring Club. They later merged
>> assets with the Mount Isa club and Kangaroo flew from there for a number
>> years.
>> The prototype was written of in an accident shortly after its delivery.
>> Does any one know of the wereabouts of its wreck or the Mt Isa aircraft
>> its history.
>> The ASC ES49b Wallabies served the club admirably from 1955-64,when they
>> were replaced by imported K7's, and contributed greatly to the NGS' held
>> Gawler through that era.
>> Noel Roediger
>> At 07:57  7/4/02 +0930, you wrote:
>> >thanks for everyone's suggestions. The family tree currently looks:-
>> >
>> >
>> >ES31 et al      Grunaus                         forefathers
>> >ES 49           Kangaroo                        immigrant grandfather
>> >ES49b           Wallaby                         Aussie grandfather
>> >ES52 (mk1 to 4) Shortwing Kookaburra            father
>> >ES52b           Longwing Kookaburra                     uncle
>> >ES54            Gnome                           black sheep of the family
>> >ES56            Nymph                                   cousin
>> >ES57            Kingfisher                      son
>> >ES58            BG Special                      special needs child
>> >                                                (autistic savant)
>> >ES59            Arrow                                   cousin
>> >ES60            Boomerang                       grand son
>> >ES60b           Super Arrow                     illegitimate grand son
>> >ES61 & ES62                                     stillborn
>> >ES65            Platypus                        great grandson
>> >ES67            mockup                          phantom pregnancy
>> >
>> >
>> >Much of this is in Martin Simon's book(s) on glider types (not in this
>> >natch)
>> >
>> >My reasons for ranking these as I have:
>> >The ES49b Wallaby was a 'cut down' version of the monster 2 seater design
>> >brought to Oz by the family.
>> >The ES54 is in the Pt. Adelaide aviation museum; a prototype built
>> >reluctantly by the family (urged on by 8m wingspan class enthusiasts)
>> >ES56 used a laminar NACA wing at a time when traditiona Clark &
>> >sections were used on most types
>> >ES58 was a Schneider fuselage wedded to BG12 wings by the Waikerie
>> Club
>> >ES61 & 62 were offered as kit or 'cheaper' versions of their predecessors
>> >a time when overseas gliders were cheap, the A$ strong, and clubs had
>> >aspirations (ah, for the good old days)
>> >ES67 was a mockup of an C/FRP type intended to go up against the PW5, of
>> >prone pilot position over the mainspar permitting a short fuse, tiny
>> >stabiliser and minimal control circuits to give optimised performance in
>> >to 13m span (L/D 38).
>> >
>> >Interesting how many of them were cutting edge in their day.
>> >ES52 was built under license in NZ, Brazil, and some in Germany (at a
>> >when enclosed cockpit 2 seaters were the exception rather than the rule)
>> >most types were capable of retrofit to self launch standard
>> >ES59 went to the Argentina Worlds, and competed in 13m form head to head
>> >with 15m types.
>> >ES60s went to England Worlds.
>> >One each ES59 and ES60 are operating in the US.
>> >A German license agreement was made for ES60s to be built there, as was a
>> >draft agreement for the ES65.
>> >
>> >Of course as time goes on and better types are developed, there is a
>> >tendency to disregard the older types. It is simply a repeat of the
>> >back then, with the names changed.
>> >
>> >(In recent times I did put mylar control seals on my Kookaburra, and it
>> >glide better; it is just that technology wasn't available back when)
>> >--
>> >Emilis Prelgauskas
>> >
>> >
>> >--
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