Description
55 Tooth 170 mm S550 CDX:EXP Crankset 51.7-54.7 belt line
Technical specifications for 55 Tooth 170 mm S550 CDX:EXP Crankset 51.7-54.7 belt line:
| PART # | S550 CDX:EXP 170 55T Black NG | BELT LINE (mm) | 51.7-54.7 |
| TYPE | S550 | BCD | Direct mount |
| TEETH | 55 | MATERIAL CRANK | Forged 6061 crank arms with 24 mm chromoly spindle |
| ARM LENGTH (mm) | 170 | MATERIAL SPROCKET | Aluminum |
| BOTTOM BRACKET | 68MM/73MM Threaded (BB not included) | FINISH | Black Ano |
| BOTTOM BRACKET SHELL SPEC (mm) | 68/73 | WEIGHT (grams) | 875 (includes belt ring) |
Gates cranksets include CDX sprockets, which provide the specific belt line required for several popular geared hubs. The crankset features a clean industrial design. The Cranks use a outboard bottom bracket such as Shimano threaded, FSA Mega XO or similar.
See tech manual for additional details: Gates Carbon Drive Technical Manual
Gates sprockets provide a slimmer profile, lighter weight and better debris shedding, thus giving maximum drive performance in all environments, including muddy or snowy conditions. The patented CenterTrack design keeps the belt aligned on the sprocket.
Use the Gates Drive Calculator to find the perfect fit for your ride.
THREE KEYS WHEN WORKING WITH CARBON DRIVE
HANDLING:
Gates Carbon Drive belts are highly durable. They offer long life when properly handled. However, caution must be used during installation to avoid damaging the carbon tensile cords. When they experience excessive bending and twisting, this creates crimps, which can lead to belt breakage.
Because of the risk of damage, in handling the belt, you must NOT:
– back bend
– use as a chainwhip
– bundle
– crimp
– twist, or
– invert
ALIGNMENT:
Alignment is critical. Hence, depending on the bike and setup, you may need to use spacers to ensure proper alignment. Noise, wear, or belt walk-off can be caused by sprockets that are out of alignment.
TENSIONING:
Proper belt tension is needed for optimum operation of the 55 Tooth 170 mm S550 CDX:EXP Crankset 51.7-54.7 belt line. However, for frames with vertical dropouts, changing a flat tire does not mean you need to retension your belt. Tensioning is easy with the Gates Carbon Drive iPhone app (available through iTunes). You can also use the Carbon Drive Krikit Gauge or ecotension tester (available in Europe). Low tension can cause the belt to skip, leading to decreased performance, while high tension can cause drag and unnecessary wear.
| TENSIONING RECOMMENDATIONS | ||
| SMOOTH & STEADY PEDALING STYLE | PUNCHY & ROUGH PEDALING STYLE | |
| MOUNTAIN & SS URBAN | 45-60 Hz (35-45 lbs) | 60-75 Hz (45-53 lbs) |
| INTERNALLY GEARED HUB | 35-50 Hz (28-40 lbs) | 35-50 Hz (28-40 lbs) |
These tension recommendations provide a good starting point. However, you may need to adjust the value higher or lower to reflect rider size, gear ratios, or power placed on the pedals.
See the Shop for further products.
