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Ottfur Release

BACKGROUND

In 1990 Cair Aviation Limited took the opportunity to purchase from Vickers the original patented  design and manufacturing rights for the Ottfur Quick Release Units.  The decision to purchase was made on the basis that it seemed very unlikely that Vickers would continue to provide manufacturers support and although at the time there were ample ex-MOD spares available from various sources, in the long term it was considered that manufacturers support would be safer if in the care of a company dedicated to the gliding movement.
From the start it was appreciated that the OM 100, originally designed to the requirements of BCAR Section E, did not meet those currently defined in JAR 22 and, therefore, its use would always be limited to types which today are generally considered as vintage.  This raised the question:  Was it possible to update this innovative and original piece of British engineering and extend its life even further into the future?
With this question in mind and in parallel with the task of establishing a support service for the OM 100, much thought and time was given to the possibility.  As a result two new types of Ottfur, the CW 300 and CW 400 have been developed.  The principle design features, geometry and key components of the OM 100 have been retained but re-packaged in new casings using modern fabrication and protection processes.

Spring kits are available for all types of Ottfur


OM Series

Spring (BR) OM 123/13
Spring (RL) OM  123/14
Nut 1/4 BSF (STD) AGS2001 E-66
Nut 1/4 BSF (Thin) AGS 200 E-66
Bush IP 130/25

£6.90


CW 300 Series


Spring (BR) CW 315
Spring (RL) CW 314
Nut 1/4 UNF (shear) x 2  A110 ET
Bolt 1.4 UNF (shear) x 2 A112 -9E
Bush CW 304

£9.90


CW 400 Series

Spring (RL) OM 123/4
Nut 1/4 BSF (shear) x 2  A110GT
Bolt 1/4 BSF (shear) x 2 A112 - 9E
Bush CW 304

£8.90

'NEW' WEAK LINK CARRIERS
We are pleased to announce our new weak link carriers. These new carriers use the standard Tost weak link colour fuses and can be connected with just one primary or both primary fuses in place. The new carriers are already in use with some clubs and have been well received.

The "Ottfur Gold" steel weak link carrier is a case hardened zinc plated unit which is intended for aerotow or winch launching and is connected with the fork end facing the glider release.
The unit weighs 78 gms and costs £9.50.

Low Cost
Simple to assemble and use
Uses standard Tost fuse links
Can be used with one or both (main & reserve) fuses
Fuse(s) clearly visible & easily inspected
Low Weight (78gms)
Can be used in both winch and aerotow rope
Can be used for both tug and glider protection
No risk of 'jamming' caused by carrier distortion
Self aligning when taking up slack
Buffers protect carrier & fuse
Carriers and buffers available as spare parts
Offers protection to cable rings on hard surfaces

The "Ottfur Silver" alloy weak link carrier is for aerotow use only where a slightly lighter unit may be required and is connected at the tug end only.
The unit weighs 42gms and costs £10.50.