Crankset Q Factor Chart, The frame manufacturer wrote in the description, that a crankset with at least 149mm Q-Factor is needed to be… Hi guys, In recent years I have been hearing more about Q Factor in the electric bike space because motorized mid-drive bottom bracket systems are often a bit wider than traditional unmotorized bottom brackets. May-2018-4331A The majority of road cranks use a Q-Factor of around 150mm. As such, it’s a feature of your crankset; you’ll find the Q-factor quoted by many brands on their websites. Q factor question Looking to change cranks for xx1 So do different Q factor cranks fit the same bike or is it the axles that are a different length? How do I know if a 156 vs 168 Q Factor will fit my bike? Thanks Sean Cranksets Q-Factor Measurement Information . Built around a JIS Square Taper interface, the 100% Pure Cranks let riders fine-tune Q-factor and chainstay clearance with their choice of bottom bracket spindle length. 3mm chainline on 113mm spindle, with a 151mm Q-factor. Routing under bar tape is acceptable within the 100 mm length. Despite being an important element in bike fit that can have a significant effect on pedaling efficiency, comfort, injury prevention, and even handling, Q Factor is surprisingly poorly understood by most cyclists. The two things you can change to narrow the Q-factor are the cranks and the BB. As crank makers, Q-Factor is something we optimize at Race Face to be narrow enough for pedaling comfort while staying wide enough for frame clearance. Simply put, Q-Factor on a bicycle is the distance between the outer surfaces of the crank arms. My opinion is that the wide Q factor is not caused by the external cups but Shimano's decision to make one crank fits all BB type (ie 68 vs 73mm BB shell, e-type, etc) and to make sure their cranks can fit in all type of frames (eg some frames have wider stays). The difference in Q-factor can affect the bike's fit and how the rider feels while pedaling. BBs commonly come in widths between 107mm and 118mm. Tonight I played around with the bottom brackets and cranks some more. This is the distance from your front chainring to the center line of the bike’s frame in the horizontal plane. Using the same 6700 cranks, I get a Q of 150 with a Chris King BB and 147 with the 7900 BB. In this article, we summarize Shimano's crank length lineup for road cranks and how to find the best crank length. 5mm on either side. Hey, I need a crank for my fixed gear. 78 MB MegaExo crankset installation instructions_CHS. we summarize what Q-factor is, how to measure it, how to determine the proper value, and how to adjust it. Rival standard spindle cranksets = 145mm Q Factor Rival wide spindle cranksets = 150mm Q Factor See our Frame Fit Specifications document for complete Rival eTap AXS fit requirements. Hope Evo cranks have a 219 mm Q-Factor on a 120 BSA BB with a 190 mm rear spacing. The Q Factor is the distance between the crank arms, measured from its outermost part. I am not very well versed in bike tech and terminology so please excuse any errors in this or any of the latter posts! Hello, given this info is all over the forum but I haven't found one thread where everything is in place - let's start a list with cranks suitable for fat bikes that allow for B: Parts are usable, but differ in materials, appearance, finish, size, etc. Q-factor also known as Crankset Q-Factor is a measurement of the separation distance between the pedal and the frame rail. A number of years ago there was an idea floating around that gained a lot of momentum that a narrow q-factor was more mechanically efficient because it made the bike stiffer and more aerodynamic and from this an assumption started to follow that a narrower q-factor was also more biomechanically effi Q-Factor or crank width is the distance between the two pedal cranks and is a measure of stance width, which is similar to your walking step-width. 91 MB Afterburner MegaExo Modular crankset 2x_Service Parts. We will do our best to assist ASAP. *Combination works only when a boost spider is used for 2X setups, 1X direct mount rings are compatible with both regular and boost setups. Product weight: 320G (170mm) Shaft specification: 28. Determining the optimal SRAM MTB cranks, for example, can be set up for anything from 49 to 59mm just by ordering a different chainring. . That number is your Q Factor. I just need to get some new rings for my 7800 cranks and call it good!!! For the 980 series, is the Q factor the same for the double and triple cranksets? Edit: Actually, the double is the FC-M985, so I guess it has a different Q factor. This distance is measured between the center point of the pedal and the point of the crank axle which determines the angle of pedal rotation and position of the cyclist on the bike quite directly. I give up! Either I'm doing something wrong when I install these things or this stuff is just wacky. It is the width measured between the outside surfaces of the cranks (where the pedals lock onto). Here we explain what Q Factor and stance width is and what difference - if any - these bike fit parameters can make to your riding. A notable outlier is Campagnolo, who provide several cranks with a Q-Factor of 145. In order to measure your Q factor for Profile’s cranks, with a caliper, measure the distance between the outside of the pedal bosses in either inches or millimeters (see photo below). The double crankset has a Q Factor of 147 mm, while my current triple has a Q Factor of 159 mm. 4 Technically, q-factor is the horizontal distance between the outer faces of each crankarm. Simply put, the Q factor is the breadth between the bike's cranks—more especially, the distance from the left crank's outside to the right crank's. The q-factor has nothing to do with your stance width while at rest. There are narrower Q-factor cranksets available in the XX SL offering. I sometimes listen to podcasts or YouTube videos by bike fitters. pdf 4. A bike fitter's rule of thumb for a good lateral fit is to have the hip, knee and foot all in line Q-factor is an important factor for improving pedaling efficiency. These spindle/rear hub combinations will give the narrowest possible Q-factor. There is a limited range for Q-factor determined by both biomechanics and manufacturers. (Wider = better frame clearance, Narrower = better pedalling ergonomics) Using Table 6, check if any spacers are required for your selected BB and spindle combination. The wider the tread, the farther apart your feet will be. The cranks need to be wide enough to clear the chainstay and a wider tire will, in turn, affect the chainstay width. Our Wide 1x and 2x cranksets have a Q-Factor 5mm wider than the non-Wide eTap AXS 12-speed cranksets. AFTERBURNER MEGAEXO MODULAR CRANKSET 2X MegaExo crankset installation instructions_ENG. Standard road cranks typically have a Q-factor of 145 mm, while Wide road spindles have a Q-factor of 150 mm. 99mm Q - factor: 148 mm Crank length: 167. Finding the optimal Q-factor for a rider depends on factors such as body shape, riding style, and personal preference. 5mm, often overlooked by riders when matching fit dimensions across bikes with different groupsets. In meiner Kette fehlt kein Glied, wenn die Lust von hinten zieht. I am not sure how convenient it is to actually measure. With the standardization of CL55 and the introduction of a wider bottom bracket interface, the Q-Factor for most of our cranks has changed. Using Table 5, check the resulting Q-factors for your crank and remaining spindle combinations – select whichever spindle gives the more desirable Q- factor. Look at their road cranks the Q-factor has not changed since moving to external BB. This is relevant because it changes the stance width and may impact your hip joints Using Table 5, check the resulting Q-factors for your crank and remaining spindle combinations – select whichever spindle gives the more desirable Q- factor. Edit: The chart will help determine if you have clearance to fit them Home > Spec > Crankset Crankset What is Q Factor? One regularly used but sometimes disregarded word in cycling is Q Factor. Does anyone know where I can find a chart comparing the Q factor (width from outer surface of each crank arm) of different manufacturers crank arms? Q-factor is the lateral distance between the outside edges of the two crank arms. If you dont see your exact model represented or have any additional questions regarding crank fitment please reach out to our support team. These are 168mm Q-factor and use the DUB SL spindle with a standard DUB bottom bracket while maintaining a 55mm chain line for Eagle Transmission by using a 0mm offset chainring to maintain the 55mm chain line . The table below gives the unoffical "Q-Factor" of some popular contemporary track cranks. Q-factors for various cranksets This is a list I have pieced together from various articles and postings on the internet. The third factor is chainline. It is compatible with the SRAM DUB [paid link] spindle system, allowing for easy installation on bikes with DUB [paid link] -compatible bottom brackets. In cycling, Q Factor is the distance between the outer sides of the two crank arms, measured laterally. e. For example, if you like the stance of your road bike (with a Q factor of say, 146 mm), and wish for your gravel-specific drivetrain-equipped gravel bike (Q factor 151 mm) to feel the same, then The tread, or "Q factor" of a crankset is the horizontal width of the cranks, measured from where the pedals screw in. Q-Factor The Quack-Factor, commonly known as the Q-Factor, is also called “crank width”. This affects how far apart the pedals are, which in turn affects the biomechanics of pedaling and the handling of the bike. It is equal to the sum of the crank clearances above, plus the thickness of each crank. It defines the stance width — how far apart a rider’s feet are when clipped into the pedals. Am I likely to notice a 12 mm difference? Worse case that I do, what can I do after the fact to mitigate this? Using Table 5, check the resulting Q-factors for your crank and remaining spindle combinations – select whichever spindle gives the more desirable Q- factor. Specifications are subject to change without notice. I could obviously push out the chainline with a longer 118 or 122mm spindle, or even a spacer on the drive side BB threads, but still not reach 48mm, plus the Q would get a lot larger. 5mm; 170 mm; 172. I'm pretty sure this is narrower than the Race Face cranks (which I think you currently have). Q factor (bicycles) The Q factor is an important factor affecting how close the pedals are laterally, and therefore affects the spread of the riders legs The Q factor or quack factor[1][2] of a bicycle is the distance between the pedal attachment points on the crank arms, when measured parallel to the bottom bracket axle. Q Factor / Crank Width Q factor is roughly the same within specific categories of bike types i. So if you do want to experiment with boost/superboost/whatever, you can do it without even buying new cranks. [3] Discussion on Q factor for kids bikes and the best crank length calculator for kids micro, mini and Jr bmx racing. Many track cranks are narrower, around 141mm. pdf 3. Same for 100 BB if the rear spacing is 190, 199mm if rear spacing is 170 mm. Internally mounted shifter setup requires the MultiClic, Blip, or Clic wires to be routed external of bar, stem, and frame materials a minimum total of 100 mm per side for all the wires. The point where the Q Factor is measured is right where the pedals are threaded and this measurement is what you see in the specifications of our ROTOR cranks. Discover the importance of a bike's Q-factor, the lateral distance between crank arms, and how it affects your cycling performance. Learn how to adjust your bike's stance width to enhance pedaling efficiency, prevent injuries, and optimize your riding comfort and aerodynamics. The Q Factor is the distance of the pedal attachment points between the crank arms. That said, we just take the manufacturer’s specs at face value. The cranks I’m looking at quote a 42. INTENDED REAR HUB WIDTH FOR SPINDLES - REV. Crankset Spindle Compatibility: The GX Eagle Crankset comes with a 168mm Q-factor, which is the standard for most riders. A comprehensive guide to how crank width, stance, and alignment affect aerodynamics, biomechanics, and power transfer in track cycling What is Q-Factor? Q-factor is the horizontal distance between the outside faces of the crank arms (measured at the pedal attachment points). This Q factor measurement is based off of the photo above: of a 19mm /68 mm bottom bracket shell with a euro outboard BB kit. When thinking about using a narrower crank, think about how many chain rings you will need. The Q - factor is influenced by several elements within the crankset, including the width of the bottom bracket shell, the design of the crank arms, and the position of the pedal attachment points. pdf 0. Due to bottom bracket size, minimum chainline guidelines and chainstay length, there is an acceptable range for Q-factor, which is typically between 150mm and 170mm. 5 mm; Crank Spline: Cybrei 16T spline (Easton compatible) (* Disc, disc claw, disc nail, power meter are the crank set) cybrei Carbon Cranks If your bicycle is not listed in the calculator or app, use this chart to determine the T-Type chain link length for your bicycle chainring and chainstay combination, Setup Key, and Setup Cog for your frame. Note: This list shows Q-Factors for most of our current crank models; we have produced multiple generations of crank arms and Q-factor/Offset can vary slightly. The change to the width of the crankset comes from the longer spindle, which moves the arms outboard by 2. This measurement directly influences your stance width on the bike, essentially determining how far apart your feet are (aka stance width) when pedalling. This allows for a lightweight yet incredibly stiff crankset that delivers efficient power transfer and long-term durability. Q-Factor 101 Q-factor is a term used to describe a crankset’s width, measured in millimeters at the outside edges of the assembled crankarms. Using Table 5, check the resulting Q-factors for your crank and remaining spindle combinations – select whichever spindle gives the more desirable Q- factor. road bikes, mountain bikes, fat bikes…etc. 2 MB Bottom Bracket Compatibility Chart (MTB). The Q-factor is an important consideration as it can impact a rider's comfort, efficiency, and potential risk of injury. This post will go over everything you need to know about Q-Factor and Crankset 'Q' Factors - In addition to the bottom bracket drop of your frame and the proportions of the bodies of your pedals, pedal-strike issues can also be fractionally influenced by how wide from the centerline your cranks place the pedals. The Q Factor varies depending on the width of the axle, as well as by the design of the crank itself. This dimension you cannot change without investing in a new crankset with a different Q-Factor. 42 MB Q factor, a crucial aspect of bike fit, plays a significant role in optimizing comfort, efficiency, and power transfer while cycling. 91 MB MegaExo crankset installation instructions_CHT. Also known as “crank Q-Factor, or the horizontal distance between the outside of one crank arm to the outside of the opposite crank arm, is a critical yet often overlooked aspect of bike fit. Road bikes tend to have a narrower Q-factor (150mm), while mountain bikes tend to have a greate This is the horizontal width of the crankset from pedal mount to pedal mount. Cranks are not typically rated by Q-factor, but MTB cranks are typically about 20mm wider than road cranks. Absence of mark indicates non-interchangeability. 18 Crank length is a small difference, but it makes a big difference in riding style. gugxaf, 8tvqmo, m04rm, fkgos, iqep, ocayn, etjwc, bnai, rlvqa, trgiux,