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The mouth release for towing of the hang gliders
The release was designed in Kharkov Aviation Institute (KhAI) (Ukraine) and currently produced in KhAI hang gliding club.
The Mouth release is purposed for the towing with significant tug force, e.g. ground towing.
One of the key features of this type of release is using of the low friction bushings and spacers for movable parts so there is no direct contact between side plastines and hook and lever, but small gap about 0.1-0.2 mm. Such design provides the ability to maintain all functions even without grease and taking into account very possible dust and sand. The release could be cleaned easily.
Used materials:
1. For side plastines, mouth peg and nuts - stainless steel mark 12H17
2. For bushings and spacers - stainless steel mark 12H18N10T
3. For all shafts and bolts - stainless steel mark A4
4. For movable parts (hook and lever) - steel 40H after heat treatment and galvanic coat.
All the parts made using laser cutting.
The axle for the lever- 4 mm diameter
The bushing for the lever - 6 mm diameter
The axle for the hook - 8 mm diameter
The bushing for the hook - 10 mm diameter
The length of the Bowden cable is adjustable for best fixation of the hook
The clothes peg made with stainless steel and covered by PVC tube for the teeth protection.
The lever could be opened manually by the finger or using the wire or rope connected to lever through small hole drilled in lever.
The release could be produced in two modifications:
1. With Bowden cable connected to bottom of release:
2. With Bowden cable connected to lever:
Usually have the Bowden comes to front side:
Some features of the release are more personal preference than technical issue. One of them is the method of connection of the Bowden wire to release.
1. With Bowden directed to pilot side
2. With Bowden directed to forward
The price of the release is 40 Euro.
