Adjusting the handlebars

Adjusting the handlebars

As standard equipment the Street Machine GT comes with under seat steering.The position of the handlebars is under the legs. Alternatively, we offer above seat steering where the handlebars are above the legs.

The handlebars are connected with the front fork through a stem.There are different stems for under seat steering in use:

a)a vertically adjustable stem that is inserted in the steerer tube

b)a stem that is clamped onto the steerer tube and at the same time fixes the steering head bearing (so called "A head stem")

Starting at the fork, both stems have to point backwards to the seat.

a)Adjusting the stem - vertically adjustable stem

Remove the rubber plug and undo the hex-he- aded screw that lies below. If the stem still doesn't move then you can undo the clamping in the stem shaft with a gentle punch on the Allen key.

Mount your bicycle, fix the front wheel with your feet and align the stem parallel to the front wheel.

At the same time insert the stem so far in the steerer tube that the handlebars move freely under the seat even when the seat is in its most upright position.The minimum distance between seat and handlebars is 5 mm.Take care that the minimum distance between the handlebar clamping at the stem and the frame of your bike is 5 mm.

Tighten the screw with 14-16 Nm. Check the clamping by trying to turn the stem against the front wheel. Remount the rubber cap.

b)Adjusting the stem - A head stem

Danger! Adjusting the stem also requires some work at the steering head bearing. In case of assembly errors the danger of accidents is increased. If you are in doubt have your bicycle mechanic adjust the stem.

The A head stem is clamped onto the steerer tube with two screws.At the same time it fixes the steering head bearing.

Adjusting the stem

Danger! The hex-headed screw in the cap adjusts the play of the steering head bearing. This screw does not help to clamp the stem tightly to the steerer tube. It does not secure it against turning.Take care that both clamping screws on the side are tightened as prescribed after you have finished your works at the stem. Otherwise the stem may turn while riding and cause an accident.

In case you only want to adjust the already mounted stem parallel to the front wheel you don't have to undo the screw on the cap.

Mount your bicycle, fix the front wheel with your feet and align the stem parallel to the front wheel.

Then tighten both clamping screws alternately with 8-10 Nm. Check the clamping by trying to turn the stem against the front wheel. Check the play of the steering head bearing, see below.

Adjusting your new bike

HPVelotechnik 13