These Schweizer SGS 2-33A sailplane kits are available in both 1/4-scale and 1/3-scale.

Both feature step-by-step building instruction manuals complete with many color pictures. Build threads:

1/3-scale Sailplane Kit

1/3-scale Interior Kit

Jim D's 1/4 & 1/3-scale interiors

This 1/3-scale Schweizer TG-3 joined Peter Goldsmith's other fine kits in 2019.

 

Peter's Prototype Build

Jim D's Build Thread 

The 1/3-scale T-37 Skylark is a large but lightweight self-launching sailplane kit. The size, weight, and flight characteristics make it a great first giant scale sailplane.

Prototype Build

Jim D's Build

Dustin's Build 

Kevin's Build

Ed's Build

The 1/3-scale T-45 Swallow is large, but not too large. The size, weight, and flight characteristics make it a great first giant scale sailplane.

 

Jim D's Build

Scott M's Build 

This 1:2.5-scale Schweizer 1-26 Kit features wings fully sheeted with 1/32" plywood. fuselage is sheeted with 1/8" balsa. Flight characteristics are amazing, 

Jim D's Build 

Erich S's Build

The 1:4 scale Old Gliders SZD-30 Pirat kit features a fiberglass fuselage and wooden wings.

Mike's Build

The 1:4 scale Old Gliders                SZD-9 Bocian kit is available as the 1C or 1E version and features all wood construction plus a large formed canopy. 

Mike's Build