Scale Towline Gliders

[lincoln]

Some interesting subjects for small scale gliders:

Motiekaitis Moti-2 PLENTY of wing area:
Moti 2

Oskinis BrO-3 Moderate aspect ratio:
BrO-3

Note that there were at least 2 versions. See also the BrO-4 and -5, which would be interesting subjects too.

Castel-Mauboussin Jalon.  Reasonable aspect ratio.
Jalon

IS-4 Jastrzab. AR is 12
Jastrzab

I had better quit now. There are many other interesting possibilities that have wings which are not impossibly skinny. One of the 1930's American air racers was turned into an airshow glider, but I can't remember the name. I'm not sure that it's on the site above. If you like flying wings, consider the Horten Parabel or the Hutter IMI. Both are on the above web site, and the former is on nurflugel.com as well.

[bcarter1234]

lincoln,

I'll take a look at those tonight. I was actually considering a Horten 4 but I'm also tempted to do a primary glider next. Not efficient but fun to watch.

[bcarter1234]

lincoln,

I particularly like the IS-4 Jastrząb. On my short list is Stakhanovets which also has a swept forward wing.
https://www.j2mcl-planeurs.net/dbj2mcl/planeurs-machines/planeur-fiche_0int.php?code=765

I have to admit though, for the most part sailplanes with high aspect ratios draw my attention. The 36" Reiher seems to work okay even the the tip chord is only 25mm.

[bcarter1234]

The Nemere flew at least a dozen flights this evening. These things are addictive.

[bcarter1234]

The Kirchner La Pruvo looks like a good candidate for the next build.
https://www.j2mcl-planeurs.net/dbj2mcl/planeurs-machines/planeur-fiche_0int.php?code=2061

[bcarter1234]

The 36" La Pruvo is started. The fuselage blank is ready for shaping. AG04 airfoil wing cores were cut with no washout as it seems the forward swept wing should not need it. The tail surfaces were slightly enlarged and the fuselage extended about .5" to get a TVo of 0.65

I'll of course have to eat some takeout to get foam for the tail surfaces.

With nearly 140 square inches of wing area and a thinner foil I'll experiment with ballast to see how it affects stability and flight duration. If it works the ballast could be replaced with a rudder servo to allow higher launches on the small field.
 
 

[Lastwoodsman]

Scale Towline Gliders      Wed April 1 2026

Hi Lincoln and bcarter1234.  I tried all of those links above and I only got a blank page.  Is anyone else getting the same as me?      The videos work but not the links.

Lastwoodsman
Richard

[bcarter1234]

They worked before but aren't now. Go to this link and search for the sailplanes lincoln mentions by name.
https://www.j2mcl-planeurs.net/

[Lastwoodsman]

Scale Towline Gliders         Thurs April 2 2026

Hi Brent:

     I really liked Lincoln's reply where he went to all the trouble to make a very appealing post,  with the little introductions of each of four gliders,  with their specific links.   It was very cleverly done,  and I remember thinking at the time:   "Great ....,  now I can easily check out these four recommended gliders".     But yes,  the links are currently still not working.

     I know that the window for editing a post,  is long gone,  so maybe you can get George to update those failed,  original direct links,  for everyone's use.   And re-post those links also,  in the latest comments too,  so people can be able to see it.    Direct links really are the cat's meow,  and the greatest thing since sliced bread ....   

     This topic is too good to have links that do not work ....

Lastwoodsman
Richard

[bcarter1234]

Getting closer to being ready for initial test glides. I saw a Swallow tail kite while I was out skating today, now I want to build one as a glider.