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TOST Double Tow Ring
Manufacturer Part Number: 102000
Discount on Qty 5+
TOST Double Tow Ring
General Description
TOST Double Tow Ring - (Connecting Ring Pairs) is forged from a fine steel cast. The small ring and large ring are cast into each other without a weld. This is a difficult and elaborate process.
TOST Double Tow rings are vital for safe connection and reliable separation of tow cables and tow releases. The type certification stipulates that every TOST tow release must be operated only with a ring pair meeting the Aeronautical Standard LN 65091. Rings must be stamped with the manufacturer's name and the standard number.
Wings & Wheels typically stocks TOST Double Tow Rings.
|
P/N SKU |
Desc |
|
102000 5235 |
Double Tow Ring (Connecting Ring Pair) to LN 65091 |
FAR Rules on Glider Towing
FAR 91.309 Towing: Gliders: (3) The towline used has breaking strength not less than 80 percent of the maximum certificated operating weight of the glider and not more than twice this operating weight. However, the towline used may have a breaking strength more than twice the maximum certificated operating weight of the glider if–
(i) A safety link is installed at the point of attachment of the towline to the glider or unpowered ultralight vehicle with a breaking strength not less than 80 percent of the maximum certificated operating weight of the glider and not greater than twice this operating weight;
(ii) A safety link is installed at the point of attachment of the towline to the towing aircraft with a breaking strength greater, but not more than 25 percent greater than that of the safety link at the towed glider end of the towline, and not greater than twice the maximum certificated operating weight of the glider.
Tost weak links in their optimized format combine the following improvements:
- Longer service life
- Correct marking with load group and manufacturer’s name
- Made of high-quality certified aircraft steel
- Clear distinction from inferior copies
- Manufacturing tolerance only 5% (10 % are demanded in the requirements)
Like our type-approved products, our weak links are also manufactured according to
EASA approved production methods. Each batch is tested on computerized test equipment and the
results are documented. This guarantees consistent high quality and traceability.
Important Notes
Weak links protect your aircraft against overloading
- Use only the weak link stipulated in your aircraft TCDS or aircraft manual
- Checking the cable preamble is mandatory according to SBO (German Gliding Operation Regulations); this includes the inspection of weak links
- Replace the weak link immediately in the case of a visible damage
- We recommend that the weak link inserts are replaced after 200 starts:
an insert exchanged in time is always safer and cheaper than one single aborted launch
- Always use the protective steel sleeve
- Use only the correct shackles: they prevent the weak link and the steel sleeve from twisting, leading to an undefi ned increase of the breaking load
- Never use two equal inserts, eg, both with round holes, in a reserve system, since this would double the breaking load
Warning
Using combinations of weak link inserts from diff erent manufacturers can double the breaking
load because of the elongation of inferior inserts!
Welded rings are prohibited!
Use of welded rings voids Tow Release warranties. Welded rings cause damage to releases. Also, undersized or deformed rings can cause the ring pair to jam the release and inhibit correct operation under load, a potential danger for the pilot.
Connecting ring pairs must be visually checked and measured at regular intervals. Ring pairs that deviate from standard dimensions must be replaced.
Always use TOST Tires and Tubes when available.
See "Tech Data" tab for Description, Application and Technical Data.
See "Docs" tab for "TOST Tire, Tube & Wheel Selection Guide".
