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11813 07/15
For additional product and safety information go to salsacycles.com/safety
TANDEM ECCENTRIC BOTTOM BRACKET INSTRUCTIONS
The Salsa Powderkeg uses a twin pinch bolt bottom bracket
shell to hold the captain eccentric bottom bracket in place.
The eccentric bottom bracket is used to achieve the correct
chain tension on the timing chain between stoker and captain.
Make sure to follow the manufacturer’s instructions for installing
both the captain and stoker cranksets. These instructions will
guide you through the proper setup of your timing chain.
1. Loosen M6 pinch bolts with an M5 Allen tool so the eccentric
bottom bracket can rotate freely (Fig. 1).
2. When installing the timing chain or beginning the adjustment
of the timing chain tension, the captain eccentric bottom
bracket should be in the install position as shown. This position
allows the rotation of the eccentric bottom bracket forward to
apply tension to the timing chain.
3. Tighten one M6 pinch bolt to keep the eccentric in the install
location.
4. Install the appropriate length chain around the stoker and
captain chainrings; follow the chain manufacturer’s
instructions (Fig. 2).
5. Loosen the M6 pinch bolt that was tightened, and rotate the
crankset forward by applying pressure on the pedal/crankarm
or using a pin spanner in the eccentric bottom bracket.
6. Achieve enough chain tension to eliminates chain slack but not
cause binding. Slightly tighten one M6 pinch bolt to keep the
eccentric bottom bracket from rotating. Now do several
rotations of the captain and stoker crankset to make sure the
cranksets can rotate freely and there is no binding.
7. If chain tension is satisfactory, torque the M6 pinch bolts with
an M5 allen key to 4–5Nm.
Eccentric Bottom Bracket
M6 Pinch Bolts
Bottom Bracket Shell
Figure 1
Eccentric Install Location
Bottom Bracket Center to Center Distance
Eccentric Bottom Bracket
Figure 2
