QRC-2 458gr.
The natural evolution of E-Bones QRC with remarkable improvements.
-Axle diameter grew up from 22 to 27mm.
-Overall structure is stiffer and stronger.
-New bearing preload system.
-Self extracting left crank.
Size: 172.5mm.
Q-factor: 138mm.
Weight: 458*gr/set.
Bcd: 110mm standard compact.
Bearings: external 30-42mm low friction.
Spindle: integrated 27mm axle.
Graphics: laser etched / CNC.
Finishing: black anodized.
Option: Hybrid ceramic bearings.
* Cranks weight with complete BB91-42 assembly.
We still mantain best features of E-Bones QRC: Lowest Q-factor, SSP, oversized bearings, sculpture machining and extremely lightweight.
QRC2 our new generation of road compact E-Bones bring SSP (stress split profile) concept to the extreme, they are stiffer lighter and slimmer!
Both cank levers have been designed for an innovative hyper sophisticate 3D cnc process that allows higher freedom on multidimensional shaping.
Bearing preloader allows an easy and perfect preload adjustment.
Self extracting left crank: no special tools are required!
Hyper accurate Finite Element structure analysis minimizes stress concentrations and improves fatigue resistance.
Each crankset receives the same sculpturing, processing and care once limited only to prototype units.
Bearings:
E-Bones come ready equipped with special bearings
6806 2rs (30-42-7mm). Our special bearings feature oversized balls, low
friction seals and lighter weight.
Hybrid Ceramic option is also available on demand (HybridUp W).
We
warmly recommend to use the original bearing.
However
bearing
fittings on
E-Bones can accept any standard 6806
2rs bearing.
Hours of state-of-art point-to-point 3D milling technology.
Stiff, light and slim!
|
Model
|
Weight
|
Q
factor
|
Chainline
|
Compatibility
|
|
Bsa68
mm
|
476gr.
|
139
mm
|
43.5
mm
|
BSA68mm
|
|
BB30-68
|
479gr.
|
139
mm
|
43.5
mm
|
BB30
68mm wide
|
|
BB91-42
|
458gr.
|
139
mm
|
43.5
mm
|
BB91-42
|
|
BB91-41
|
458gr.
|
139
mm
|
43.5
mm
|
BB91-41
 |
|
PF30-68
|
480gr.
|
139
mm
|
43.5
mm
|
PF30-68
|
Specify BB details at your ordering.
You can see the difference in these prototypes!
100% made in Italy