Spin Models XLG-225 Medak sailplane

Thanks to all of you who commented.  This was a model that was worked on in-between other builds or when paint or glue was drying on other builds.

This is indeed a sailplane as the glide ratio is high enough.

High aspect ratio wings and slow speed can create problems!  Gliders in general require large rudders, the lower the speed the more problem and the more rudder authority you need.

Ah ! 

 Thank You , Kensar ! I get so tired of folks calling them gliders . Yes , the monstrous things used in WW-2 were indeed Gliders . What these are indeed are  Sail - Planes .

 Going up in one and flying with the birds .( you have to use the same tactics to remain aloft as they do ) is akin to Diving the Great Barrier reef twenty Years ago . Sheer exhileration and freedom ! 

I've wondered that also about many classic glider designs.  Based on my knowledge of RC sailplane design and comparing to new designs, I would say that the fuse length is short compared to modern designs, and so they need a lot of rudder authority to circle and manuever at slow speed in thermals.  New designs have longer fuses and so need less torque from the tail (rudder and elevator) for manuvering.

I was thinking the same - really nicely laid down brilliant yellow.  Interesting subject.  I have a friend the flys real sail planes and scale R/C. 

BTW I know next to nothing about aircraft design, but I'm curious why such a substantial rudder on that plane?

Well done, Kensar.  The yellow looks great.