Since 2009 we only offer our special, inventive BWS–Flexi-Bugwipers.
According to type of glider the BWS-Flexi-Bugwipers are fixed to the retrieval line below or above the wing.

Below the wing: tilting part and opening spring must be placed on the lower part of the Bugwiper.
Above the wing: tilting part and opening spring must be placed on the upper part of the Bugwiper.

Our PATENTED JOINT automatically adapts the BWS Flexi-Bug-Wiper to the wing profile during the cleaning  from wing root to wing tip and back again.

• only one bug wiper form for nearly all types of gliders
• Aerodynamically well-formed and appealing
• Reduced additional drag, because of its streamlined form
• Highest precision of the parts (injection moulding)
• Approved fibre reinforced CFR-plastics of high tensile strength
• No deforming, no kinking and buckling of the parts
• Stable, solid  structure, UV-resistent
• High cleaning efficiency, especially by doubled  cleaning filaments
• Stable gliding along the wing leading edge by the doubled cleaning filaments and by the clinching effect of the bug wiper to the upper and lower part of the wing due to the inventive joints enabling automatic matching to the profile.
• Quick mounting and de-mounting of the bug wiper possible.
• Low price-high quality.

Up to now, for any type of glider a special bending and pressing mould had to be made, causing due to the many types of gliders extremely high production costs.

Yet, by our inventive joint system, hinging upper and lower part of the BWS Flexi-Bug-Wiper together in a flexible, pivotable manner, it is possible for the first time to use only one form for nearly any type of glider. This enables us to use the expensive, but utmost precise injection molding.

The advantages are obvious

In case of order, please inform us whether the retrieval line shall be fixed to the upper or lower part of the bug wiper (according to the position of the retrieval line being above or below the wing).
 

Below the wing:
Antares, DG, Hornet, HpH, Jantar, Jonker, Kestrel, LAK, Libelle, LS, PIK, Schempp-Hirth, SZD
 

Above the wing:
EB28, EB29, Schleicher

Hooking retrieval line to bug wiper with retrieval line on the underside of the wing

Hooking the retrieval line:

According to figure down below:

• thread loop at end of line through hole „I” in the small bow,
• through the corresponding hole „II” in the large bow,
• through the adjacent hole „III“,  
• hook loop to pin „IV“ and tense the line.

For instance at right bug wiper:

• mounting cleaning filament
• hooking retrieval line

Replacement of the cleaning filament:
 

• Cleaning filament: Fasten filament with 4 knots at the hole (1),
• thread it through the holes (2), (3),(4),( 5) and (6),
• back again through the holes (6),(5), (4),(3),(2) up to (1),
• after adjusting bug wiper to maximum profile at the fuselage tense filament and fasten it with 4 knots to hole (1).

Important:

The free pivoting joints at the front of the bug wiper enable automatic adaption to the wing profile during cleaning along the whole wing.

Please pay attention to the following:
The cleaning filaments should be as long as possible, but short enough that the bug wiper is always sliding on the cleaning filaments and not on the frame. Check this especially at the wing tip. Take also care - only in case of retrieval lines above the wing - that in the collapsed position at the fuselage the cleaning filaments are also short enough to prevent opening to a bigger profile than necessary.

See also bug wiper manual included in the delivery