My decently accurate gram scales read 579.5 for both crankarms, including all fixing bolts – no tricks.
But, FSA is spot on and under their listed production weight of 617 grams.
#FSA GOSSAMER BB30 CRANKSET INSTALLATION MANUAL PLUS#
Manufacturers are renown for telling fibs about component weights, usually with a plus or minus two percent fudge factor. With this said, this particular crankset is optimized for two chainrings, and thus I did not test it in a single chainring configuration. FSA has kindly produced this video which demonstrates that process. The larger of the two chainrings is relatively simple to remove and substitute for another size, provided you possess FSA’s E0611 tool, a 10mm hex wrench and an appropriate torque wrench. Pictured above, you can see the FSA 30 tooth small chainring attached directly to the 46 tooth big chainring.įSA’s direct mount design isn’t the first of its kind, but it effectively eliminates all of the compatibility issues with BCD’s (aka bolt circle diameters), and thus provides previously unattainable possibilities for smaller inner chainrings. In the case of FSA’s double chainring configurations, the smaller chainring mounts directly to the rear of the bigger chainring. With an FSA direct-mount crankset, and this applies to a single or double chainring setup, the largest chainring mounts directly to the crank using a spline type interface. Shimano and Campagnolo have both switched to four-arm crank designs, but those companies still rely on the traditional method of chainring mounting – meaning, the chainrings mount to the arms of the crankset. This crank is a little different from the norm, being a four-arm design.
Direct mount outer chainring and 90 BCD (bolt circle diameter) inner chainrings.Hollow carbon fiber arms with UD finish.This review centers around the 46 / 30 chainring pairing with 170mm arms, and FSA’s BB386EVO English thread bottom bracket.įeatures of the FSA SL-K Modular Adventure BB386EVO crankset include: Thanks to the adaptable BB386 EVO 30mm spindle, this modular system will fit a wide variety of frames with a range of BB standards 52/36 50/34, 48/32 or 46/30 are the offered ring combinations.” “SL-K modular BB386EVO is the latest FSA crankset for gravel, adventure or road use. It took FSA to realize the potential of smaller gears. Sugino has had a crankset on the market for some time with 46 / 30 chainrings ( see our review of that crankset here), but most people in the bicycle industry hadn’t figured out the massive possibilities between lower gears and gravel / adventure cycling.ĭave Koesel, while still the road product manager at Felt, approached FSA and others to see if they’d produce a subcompact crankset in carbon.
In the case of gravel cycling, even less. In brief, Dave and later FSA realized that a 50 x 11 gear is something the vast majority of all riders will use for less than one percent of their riding. The inspiration for this crank belongs to 3T’s Dave Koesel. But, one thing is for certain, FSA has been manufacturing top-notch bicycle components for many years.įSA SL-K Modular Adventure BB386EVO Crankset with Subcompact Chainrings “Full Speed Ahead (FSA) produces world-class bicycle components for road cycling and mountain biking and we support many of the world’s leading road and mountain bike teams.” This is according to the FSA’s company page, which doesn’t read into the company’s beginnings and later history.
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