Byron Bay Gliding
  • Home
  • Articles
    • Aviation Humour
      • Caption Competition
      • Engine Basics
    • Byron Gliding History
    • Cheating Death
    • Coorabell Ridge
    • Meatbombs
    • News
      • News 2011 June
    • Gloucester Airstrip
    • Gossamer Albatross
    • Lowering the Nose
    • So You Want to be a Pilot, Sonny
    • Puddle Jumpers vs Zeros
    • How to Make a Glider
    • Lake Eyre Safari
    • Lightning Strikes
    • Little Voice
    • Soaring the Coorabel, 1937
    • Three Women
    • Spitfires
    • Wave Flying Mt Warning
  • Contact
    • Thank You
  • Galleries
    • Club Photos
    • Lake Eyre Safari Photos
    • BGC History Gallery
    • Gliding Videos
      • Hanna Reitsch Videos
    • Grob 109B St Girons
    • Aerial Photographs
    • Morning Glory
    • Coolie_Tower
  • Air Experience Flights
    • Terms & Conditions
  • Blog
  • Flying
    • Grob 109 Flying Notes
    • Byron Bay Weather
      • Byron Bay Weather II
    • Checklists
    • Crosswind
    • Gliding Classifieds
    • Epirbs & SPOTs
    • Sartimes
    • Learn to Fly Gliders
    • Landing
      • Landing II
    • Outlanding Procedures
    • Ridge Soaring the Coorabell
    • Tyagarah Airstrip
    • Radio Procedures
    • Safe Flight Planning & Regulations
    • Yellow Arc
    • Windsocks
  • Technical
    • Electrics
      • Ducelier Alternator in MotorGliders
      • Slick 4230 Magneto
      • Sparkplugs
    • Grob G109
      • G109 Handling Notes
      • G109 Rudder
      • G109 Scale Model
      • G109 Tailwheel
      • G109 Toolkit
      • G109 Starter Motor
      • G109 100 Hourly Inspection
      • G109 Modifications
    • Documents
    • Brakes
    • CASA Engine Guidelines
    • Dimona H36
      • Dimona H36 Sauer 2500
    • Engine Basics
    • VW Engines for Motor Gliders
    • Conversions
    • Fuel Topics
    • Jabiru Falke
    • Grob G103C Twin III
    • Limbach External Oil Filter
    • Lockwiring
    • Motorglider Propellers
    • Special Tools
Home » Technical » Grob G103C Twin III

Two-seater, retractable engine, self launching motor glider

Sold to Lake Keepit syndicate March 2011

The G 103 C Twin III is a development of the Twin II with a new ‘Discus’ plan wing of slightly increased span and modified airfoil section. The cockpit has detailed improvements including better ventilation, relocated airbrake levers to give better purchase, and canopies restrained by gas-filled struts. The unpowered sailplane is cleared for aerobatics similar to the Twin II Acro. The self-launching version (Twin  III SL), which is non-aerobatic, has an electrically actuated mast-mounted retracting engine and steerable  nose wheel, Fuel is stored in a main tank in the fuselage close to the engine, and in an auxiliary tank in the  left wing root from which fuel is moved by a transfer pump. The variable pitch propeller has climb and  cruise setting. ATC.

Grob_III.jpg
Grob III Twin SL
Grob_III_cockpit.jpg
Grob III Twin SL Cockpit
Grob_III_left.jpg
Grob III Twin SL

 

The Rotax motor has completed 206 engine hours with 591 flying hours and 247 landings.

The wings and fuse have been recently refinished in Polyurethane paint. 
The variable pitch prop was recently reconditioned.
The hydraulic wheel brake system has also been overhauled

The cockpit is well fitted out with CAV varios, Becker radio c/w boom and headset facilities and oxygen. The front and rear cockpit also features dual engine control systems.

Included is a Comet clamshell trailer in excellent condition complete with a hydraulic lift fuse cradle.

Grob 103 C Twin 111 SL

Specifications –
.
Span 18.0 m./ 59.0 ft
Area 17.5 sq. m. / 188.4 sq.ft.
Aspect ratio 18.5
Airfoil Eppler E 583
Empty weight 390 kg. (460 kg.)
Payload 210 kg.
Gross weight 600 kg.
Wing loading 34.29 kg. / sq. m. / 7.03 lb. / sq. ft.
(40.57 kg. / sq. m. / 8.29 lb. / sq. ft)
Engine (SL) (32 kW/ 43 bhp Rotax 505A

Structure GFRP and CFRP

Performance –
L/D max. 36 107 kph / 58 kt
Min. sink 0.70 m/s / 2.3 fps / 1.36 kt
89 kph / 48 kt

More Gliding Classifieds

Comet clamshell trailer for Grob III
Comet clamshell trailer for Grob III

Comet clamshell trailer for Grob III

Leave a Reply

You must be logged in to post a comment