TOST Tow Cable Retractor With Guillotine (CRG)
TOST Tow Cable Retractor With Guillotine (CRG)
TOST Tow Cable Retractor Winch With Guillotine (CRG)
General Description
TOST Tow Cable Retractor Winch Wih Guillotine (CRG) - allows the tow cable to be retracted during descent, and, in the event of danger, to be chopped. This has substantial safety and cost benefits compared with conventional aero tow: No cable drop with potential risk to people or aircraft, Considerably diminished noise levels since aircraft can land right away, More economical operation through the elimination of cable drop and reduced flight time, No delays in aircraft starts due to tracing and retrieving tow cables In the event of danger, the tow cable can be chopped anytime to sever the link between glider and tug, also under high loads and large cable angles.
The retractor winch is installed in the fuselage (baggage compartment); the load is taken up by the cable stop plate unit mounted to the tow support in the aircraft tail. Once the glider pilot has released the tow cable, the tug pilot retracts the cable and is ready for the next towing job. Since 1981, about 750 of these CRGs (previously known as System Feuerstein) have been successfully deployed all over the world. Refer to the tables for a list of EASA-approved installations. CRGs are installed as standard by aircraft manufacturers, but retrofitting older aircraft is also possible and is done very often by gliding clubs. We consult you profoundly. The requirements of the regional authorities for airfield approvals are increasing. With the installation of a CRG in the towing aircraft, those requirements can be fulfilled more easily. Also, the neighbors will profit from the decreasing emissions.
Our CRG basically can be installed in every tug that is certified for towing. We are happy to prepare an offer and advise you about the installation and approval. All units for Class E towing aircraft are equipped with the powerful driving unit PM 42 available in 12 V and 24 V on-board voltage. This driving unit also guarantees the full cable wind-up for fast descents.
EASA-approved installations in aircraft. (See "Tech Data" Tab for aircraft type.)
TOST Tow Cable Retractor With Guillotine (CRG) price varies depending on selection. Use above dropdown box for selections and final price.
EASA approved installations in aircraft
| TCDS | Type |
| 1001 | DR 300/180 R, DR 400/RP, DR 400/180, DR 400/180 R |
| 741 | DR 253, DR 253 B |
| 661 | Job 15-150, Job 15-180/2 |
| 640 | MS 880 B, MS 883, MS 887 Ralley 150 ST-D, Ralley 150 T-D, Ralley 180 T-D, Ralley 180 TS, Ralley 150 SVS |
| 657 | MS 892-A 150, MS 893 A, MS 894 A, MS 892E-150, MS 893E, MS 893E-D, MS 894 E, MS 235 E-D |
| 568 | Piper PA 12 |
| 722 | Piper PA 18, PA 19 |
| 525 | Champion Citabria 7GBC, 7GCBC |
| 525a | Champion Citabria 8GCBC and all types approved for towing |
| 674 | Stinson L 5 |
| 536 | Stinson 108-3 and all types approved for towing |
| 739 | Cessna FR 172 ***DISCONTINUED*** |
| 1088 | Christen A-1 Husky, A-1A, A-1B |
| 669 | Maule M-6-235, M-7-235, MX-7-180, MX-7-235 |
| 1000 | Piper PA 25 |
| 1098 | Zlin Z 143 |
Installation Guide for the Tow Cable Retractor Winch with GuillotineWinch Unit
Depending on the model, the retractor winch is mounted either on a base plate or a motor support and installed in the fuselage of the tug either behind the seat or in the baggage compartment. If necessary, the winch unit can be dismantled quickly. The main components are a 12 V (standard) or 24 V (optional) motor with a worm gear, motor bracket, cable drum and cable cover.
The tow cable runs through or under the fuselage, either in aluminum or in a plastic cable duct, to the cable stop plate unit at the tail.
Cable Stop Plate Unit With Guillotine
For tugs of the type Robin and Morane or for motor gliders or ultralight aircraft, the new cable stop plate is bolted to the existing tow support. For tail wheel aircraft, e.g. Piper, Maule or Husky, the system is supplied with a new tow support on which the cable stop plate with guillotine is mounted.
The guillotine is activated by the existing release cable. The cable is simply transferred to the guillotine lever. A tow release can be used optionally, eg, for banner tows or double tows by transferring the cable from the guillotine back to the tow
release. Please note: Only one of the two towing devices may be used at a time.
The cable load is taken up by the stop plate via a sleeve screwed over a knot in the tow cable. The cable load is not taken by the winch unit. The permitted cable load is equivalent to the permitted towing capacity of the tug.
A rubber funnel takes up the conical end-piece after rewinding the tow cable. The fuselage is protected against damages.
Electric Switch Unit
The rewinding of the cable is started by means of a toggle switch fitted with a control light. The switch unit (switch, fuse and cable set for standard 12 V on-board voltage) is prewired and assembled on an aluminum plate that can be mounted on the instrument panel in the pilot‘s line of sight.
Once the glider has been released, the electrical switch unit starts the retractor winch. The operation can be checked in the rearview mirror. The control light in the panel is on during the whole duration of the rewinding. After the cable has been fully
rewound, an overload switch switches the motor off automatically. If the cable retraction sensor is installed, the motor will be cut off immediately.
Tow cable
The tow cable with a 6.1 mm diameter has a standard length of 50 m. The cable is terminated by an aluminum end piece, complete with weak link and connecting ring pair. Breaking load of the weak link according to your requirements. Unless
otherwise specified with the order we supply a standard 500 daN white weak link.
The kit is ready-to-tow, ie, you receive all necessary parts for the installation. You can start operation immediately after the approval. The aluminum cable duct is not supplied as part of the standard kit due to the high transport cost. On request, we can include this item in the scope of delivery correctly flared.
The tow cable retractor winch with guillotine allows the tow cable to be retracted during descent, and, in the event of danger, to be chopped. This has substantial safety and cost benefits compared with conventional aero tow:
- No cable drop with potential risk to people or aircraft
- Considerably diminished noise levels since aircraft can land right away
- More economical operation through the elimination of cable drop and reduced flight time
- No delays in aircraft starts due to tracing and retrieving tow cables
- In the event of danger, the tow cable can be chopped anytime to sever the link between the glider and tug, also under high loads and large cable angles
TOST Tow Cable Retractor With Guillotine (CRG) is a special order item please allow approximately 4 weeks for delivery.
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