Frame Requirements When Mounting The Gates Carbon Drive; Possibilities For Tensioning And Adjustment; Opening The Frame - Rohloff Gates SPEEDHUB 500/14 Manuel D'utilisation

for frame builders

Frame requirements when mounting the Gates Carbon Drive

Frame requirements when mounting the Gates Carbon Drive

Opening the frame

Opening the frame
A specific rear triangle is required for mounting the Gates Carbon Drive System.
A specific rear triangle is required for mounting the Gates Carbon Drive System. Since the belt
Since the belt cannot be separated and rejoined like a bike chain, it has to be
cannot be separated and rejoined like a bike chain, it has to be possible to open the frame at
possible to open the frame at the rear triangle. This opening should allow a gap of
the rear triangle. This opening should allow a gap of at least 8mm. There are several possible
at least 8mm. There are several possible solutions, depending upon desired style.
solutions, depending upon desired style. Illustrations1 and 2 show a frame with the opening
Illustrations1 and 2 show a frame with the opening at the dropout. A separation of
at the dropout. A separation of the right seatstay of the frame is also possible. (Illustration 3).
the right chainstay or at the seatstay of the frame is also possible. (Illustration 3).

Possibilities for tensioning and adjustment

Possibilities for tensioning and adjustment
It has to be possible to tension and adjust the belt after it is mounted in the frame. This is possible
through the use of either adjustable dropouts (Illustration 2) or with an eccentric bottom
bracket. However, the safety of the belt can only be guaranteed if the frame design allows
It has to be possible to tension and adjust the belt after it is mounted in the frame.
for the rear wheel to be dismounted and mounted in a way that maintains the belt tension.
This ispossible through the use of either adjustable dropouts (illustration 2) or with
an eccentric adjuster around the bottom bracket. However, the safety of the belt
can only be guaranteed if the correctly adjusted tension is not altered when the rear
wheel is dismounted (in the case of a puncture, for example). The frame construction
must allow for this. Furthermore, the adjustable range of lengths between bottom
bracket housing and rear axle should be between 16 and 30mm, to guarantee
a sufficient tensioning function and the possibility of changing the gear ratio.
38
for Frame builders
Illustration 1:
Opening the frame to
mount the belt
Illustration 1:
Opening the frame to
mount the belt
www.gatescarbondrove.com
4
33