Adjusting the seat position

Adjusting the seat angle

A big advantage of the Street Machine GT is that you can adjust the seat angle very quickly. For beginners or rides in the city you can choose an upright seat position for a better view, and for longer travels you can choose a flat position for better aerodynamics.

The seat is fastened with two quick release levers on slotted aluminum seat mounts.You can adjust the angle by 10 degrees by simply opening the two quick release levers. In the medium seat position the angle is about 35° from horizontal.

Because of the special cam shape of the two slotted holes, the seat effectively pivots around a central axis, approximately in the area of the lower lumbar vertebrae.This is the place where you support the biggest part of your pedaling force while riding, so this point determines the distance to the pedals.The advantage of this design is that you adjust the distance from the seat to the bottom bracket only once as described above, a change in the seat angle does not require an adjustment of the front boom.

Caution! The two quick releases have to be closed firmly (tightening force 15-20 kg / 45 lbs) to safely hold the seat.You are not allowed to open them while riding.After they have been closed the imprint "close" must be visible. If the quick releases are not tightened appropriately the seat can move while riding and you may no more be able to handle your bicycle.

Adjusting the seat with mounted Speedbag

A mounted Speedbag impedes the access to the rear quick release for the adjustment of the seat angle.

Therefore you should adjust your seat prior to mounting the Speedbag.You have to screw the Speedbag to the seat afterwards.

It is possible to simplify the adjustment of the seat by replacing the knurled nut of the rear quick release by a big washer and a self-locking hex headed nut.This allows you to tighten or loosen the seat mounts with a tool you insert from behind.

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