Kefren srl

Support

Resistance guarantee:

DDwings® has passed easily 150.000 load cycles with 60 kg (132 lb.) load per wing for a total load of 120 kg (264 lb.) set at the maximum backing and with a rhythm of 40 repetitions per minute. This is an extreme simulation which can not be repeated in real use.

Our saddle is CE marked and is worldwide patented.

Suggestions:

When you ride on a DDwings® saddle, the sensation is really different from other bicycle seats.

Find the perfect position by setting the saddle backward, forward and positioning the correct angle. Raise and lift slightly the handlebars of your bicycle and ride it for a while; after this you will realize that the DDwings® is the right saddle for you!

Assembling instructions

Insert the post (1) into the bicycle frame.
Use screw (4) to join together post (1) and support (2) without screwing tight.
Insert saddle (3) on support (2) and tight them up with the two screws (5)
Screw or unscrew the screw (6) to obtain about 15° inclination of the lower side of the saddle (3)
Press the back of the saddle and screw tight the screw (4)
Check that the screw (6) is completely in its holder (post (1), see picture)
Follow the instructions for the adjustment and repeat the assembling sequence at every variation.
Check the screw (4) after the first 30 minutes use.

Instructions for a correct posture of the saddle

References: A Perpendicular central axle and pedals.

B Perpendicular forward limit of your knee (mark the reference with a sticker on the bicycle frame cm. 6 (2,36 inches) ahead of the perpendicular A.

With the pedal lever set on the lower dead-point (see also the picture), bend your leg slightly. Your knee must not go beyond the perpendicular B.

Take care to raise the handlebars at the same level as the saddle in order to avoid too much weight on the arms.

A proper regulation is attainable in this way:

Forward and backward (normally at best with the saddle completely set backward.
Inclination (the most suitable posture is attainable by setting the handlebars higher than the saddle. In this case inclination of the saddle can be lowered for a most comfortable posture).
Upward and downward (you can lower or raise the saddle mm.2 (0,07 in.) at a the time until the nuisance cause by cushion disappears. The best regulation is achieved when you feel comfortable on a flat posture).