SZD-36 Cobra 15

A friend is considering purchasing a SZD-36 Cobra 15 glider. Comments
from anyone having owned or flown this model aircraft would be
appreciated.

Terry/DG800B

Hi Terry,

I think that it is the type owned by Matthew Sawhill in Ankeny, Iowa. He
would be a good reference. ... Or is it his glider that is for sale? Did
he move up to something else?

Paul Remde

wrote in message
...
A friend is considering purchasing a SZD-36 Cobra 15 glider. Comments
from anyone having owned or flown this model aircraft would be
appreciated.

Terry/DG800B

Hi Terry,

You could try Scott Penrose of Gliding Club of Victoria (Australia)
email . He has owned and flown a Cobra 15 (VH-GJS)
for a couple of years.

Regards,

Geoff Vincent
Grampians Soaring Club

On Sat, 26 Jul 2008 02:14:20 GMT, "Paul Remde" wrote:

Hi Terry,

I think that it is the type owned by Matthew Sawhill in Ankeny, Iowa. He
would be a good reference. ... Or is it his glider that is for sale? Did
he move up to something else?

Paul Remde

wrote in message
...
A friend is considering purchasing a SZD-36 Cobra 15 glider. Comments
from anyone having owned or flown this model aircraft would be
appreciated.

Terry/DG800B

On Jul 25, 9:14 pm, "Paul Remde" wrote:
Hi Terry,

I think that it is the type owned by Matthew Sawhill in Ankeny, Iowa. He
would be a good reference. ... Or is it his glider that is for sale? Did
he move up to something else?

Paul Remde

wrote in message

...

A friend is considering purchasing a SZD-36 Cobra 15 glider. Comments
from anyone having owned or flown this model aircraft would be
appreciated.

Terry/DG800B

Sawhill flies a Foka 4.

On Jul 25, 10:01*pm, " terry-
wrote:
A friend is considering purchasing a SZD-36 Cobra 15 glider. Comments
from anyone having owned or flown this model aircraft would be
appreciated.

Terry/DG800B

Please make sure that you have the translated copy of Polish
Maintenance Manual from SZD!
It is a beautiful wooden glider however as with any construction it
requires preventative maintenance. There has been an accident in
Alabama where a roman screw retracted from the lower spar (due to a
wear of supporting bushing) and wings collapsed during a high speed
pass. Maintenance manual calls for periodical replacement of those
parts and such a glider would not have been airworthy in Poland.

Regards

GK

On Sat, 26 Jul 2008 07:17:44 -0700, GK wrote:

There has been an accident in
Alabama where a roman screw retracted from the lower spar (due to a
wear of supporting bushing) and wings collapsed during a high speed
pass.

What is a roman screw?
Is it the same type of wing fixing that the SHK used?

I've not seen the term before and a web search failed to find a suitable
definition.


--
martin@ | Martin Gregorie
gregorie. |
org | Zappa fan & glider pilot

On Jul 26, 2:45*pm, Martin Gregorie
wrote:
On Sat, 26 Jul 2008 07:17:44 -0700, GK wrote:
There has been an accident in
Alabama where a roman screw retracted from the lower spar (due to a
wear of supporting bushing) and wings collapsed during a high speed
pass.

What is a roman screw?
Is it the same type of wing fixing that the SHK used?

I've not seen the term before and a web search failed to find a suitable
definition.

--
martin@ * | Martin Gregorie
gregorie. |
org * * * | Zappa fan & glider pilot

- http://pl.wikipedia.org/wiki/%C5%9Aruba_rzymska

On Jul 26, 2:19 pm, GK wrote:
On Jul 26, 2:45 pm, Martin Gregorie



wrote:
On Sat, 26 Jul 2008 07:17:44 -0700, GK wrote:
There has been an accident in
Alabama where a roman screw retracted from the lower spar (due to a
wear of supporting bushing) and wings collapsed during a high speed
pass.

What is a roman screw?
Is it the same type of wing fixing that the SHK used?

I've not seen the term before and a web search failed to find a suitable
definition.

--
martin@ | Martin Gregorie
gregorie. |
org | Zappa fan & glider pilot

-http://pl.wikipedia.org/wiki/%C5%9Aruba_rzymska

In the USA it would be called a Turnbuckle.

On Sat, 26 Jul 2008 15:07:12 -0700, Tim Taylor wrote:

On Jul 26, 2:19 pm, GK wrote:
On Jul 26, 2:45 pm, Martin Gregorie



wrote:
On Sat, 26 Jul 2008 07:17:44 -0700, GK wrote:
There has been an accident in
Alabama where a roman screw retracted from the lower spar (due to a
wear of supporting bushing) and wings collapsed during a high speed
pass.

What is a roman screw?
Is it the same type of wing fixing that the SHK used?

I've not seen the term before and a web search failed to find a suitable
definition.

--
martin@ | Martin Gregorie
gregorie. |
org | Zappa fan & glider pilot

-http://pl.wikipedia.org/wiki/%C5%9Aruba_rzymska

In the USA it would be called a Turnbuckle.

Same here, but how, exactly, does that attach the wings? I can understand
that it might pull them together and onto the fuselage pickup pins, but
what locks the spars together?

Martin Simon's 3-view of the Cobra shows the spars apparently meeting at
the fuselage centre line and some sort of circular hatch above their
meeting point: that's why I asked if the Cobra used a similar mechanism to
the SHK.


--
martin@ | Martin Gregorie
gregorie. |
org | Zappa fan & glider pilot