The data on this page is gathered from the factory published owners manual and are deemed to be correct.
However, it is the pilot’s sole responsibility to verify and fly the a/c within the limits of factory-published information.
For 92TW document and equipment data: Scroll to the bottom of the page.

Weight and Balance
Empty Weight 980 lbs.
Maximum Weight 1435 lbs.
Maximum Useful Load 454 lbs.
Minimum front seat load for all flights* As Placarded.
Maximum Front Seat Load 242 lbs.
Maximum Rear Seat Load 210 lbs.
Maximum Baggage Compartment Load 0 lbs.

Seat ballast must be installed if the front seat load is less than the placarded minimum front seat weight.

Air Speeds
Maximum Speed calm air Vne 135 kts
Maximum Speed to Deploy Spoilers V 135 kts
Maneuvering Speed Va 92 kts
Maximum Aerotow Speed Vt 92 kts
Minimum recommended approach speed Vref 56 kts
Maximum crosswind component V 11 kts
Stall Speeds Without Dive Brakes With Divebrakes
Solo 36 kts 41 kts
Dual 41 kts 49 kts

Flying in rain raises stall speeds by 7 MPH. With wet wings increase take-off and approach speeds accordingly.

Performance
Speeds to Fly Solo Dual
Minimum Sink 40 kts 49 kts
Best L/D ~36/1 51 kts 60 kts

Glider N792TW Documents

Twin Astir Checklist
N792TW Loading Graph
N792TW Weight and Balance

Glider Manuals

Twin Astir Flight Manual
Twin Astir Maintenance Manual
Twin II Repair Instructions (NOT specifically for Twin Astir)
2014 TDSC G39EU

Equipment Manuals

AAE Antenna Information
Airpath Compass Compensation Instructions
Becker 4201 Transceiver Brochure
Becker 4201 Transceiver Data Sheet
Becker 4201 Transceiver Wiring Diagram
Cambridge 302 direct digital Variometer Manual
Oudie 2 Manual
PCAS MRX Collision Avoidance System Manual
Trig TT21/TT22 Mode S Transponder User Manual
Trig TT21/TT22 Mode S Transponder Installation Manual
Winter airspeed Indicator Manual
Winter Altimeter Manual

Resources

Mountain High Oxygen system manual