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Spec
Tech |
Description
The Fifteen.G crankset uses a novel combination of features to provide a class leading value in a lightweight cross country/all mountain crankset. Total weight with bottom bracket: 757 grams.
Forged and CNC machined arms are attached to a 30mm aluminum spindle using a proprietary polygon interface (Based on DIN 32711 P3). The cranks spin on an oversized external bottom bracket bearing system, including an integrated non-contact shield.
FAQ
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This is an XC/All Mountain crank but is it strong enough for FR/DH?
This crank is for XC/All Mountain use only. The Hive is hard at work to fill in products to suit your needs so there will probably be a DH crank next year.
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I noticed there is a wave washer included with my cranks. Why do I need to use that?
Bearings work best with a certain amount of preload. Frames also have tolerances associated with their manufacture. Facing/chasing the BB area can affect the overall width of the BB shell, so the wave washer serves double duty to take up this tolerance and at the same time apply preload. See your Fifteen.G Crankset Manual for the proper use and placement of the wave washer.
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Why the pedal washer? Won't I reduce my q-factor if I remove it?
All bolt type fastener connections need a washer under the surface of the moving end. This prevents the material at the interface from becoming damaged due to the movement of two different materials against each other during the tightening process. Also, connections between fasteners stay tighter, more dependably, when a washer or spacer is used to provide a gap between the threaded connection and the end face. Remove the washer? Don't do it.
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I am having trouble installing my cranks. Can you help?
Yes! Check out the Fifteen.G Crankset Manual and the Crank Installation FAQ. If you still aren't having any luck, just give us a call at 707.765.2770.
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I am running a White Industries freewheel with my Fifteen.G Single Crank setup and the chain is rubbing on the bashguard. What is going on?
The chainline of Fifteen.G Single Cranks as shipped is 49.4mm. The chainline of, for example, a Chub Single Rear with a White Industries Freewheel is 56.5mm. White Industries recommends using an 8 speed (3/32”) chain with their freewheel. The angle at which the chain leaves the chainring creates rubbing between the chain and bashguard. Click on the photo below to see an example.
There are a couple potential solutions here:- Move the chainring to the outer position. This will give you a nearly perfect 56.9mm chainline compared to the White Industries freewheel. You'll need some chainring bolt spacers because the chainring bolts will be too long once you've removed the bashguard.
- We're working on a modified bashguard that will be ready in mid-September. It's a long time to wait so we suggest moving the ring to the outer position as a temporary solution.
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Can I run a BMX/SS chain with my Fifteen.G Single Cranks?
BMX/SS Chains such as the SRAM™ PC-1 are not recommended. These chains are wider than 8 or 9 speed chains and can create significant noise. Additionally, the chain floats back and forth and the radiused sections of the inner link plates tend to catch on the chainring tooth. We recommend using a 9 speed chain of any brand.
Also note that using a SS/BMX chain requires the use of a SS/BMX 1/8” tooth-width freewheel, an 1/8” tooth width chainring, or both. It will not work with 3/32” or 2mm width teeth at both ends. As described above, SS or BMX chains typically have more play in the pin/bushing interface than shifting chains. Because of this, any misalignment is taken up in one or two links, as opposed to multiple as on a shifting chain (which uses tighter pin/bushing fits). For example, on a White Industries freewheel, or any which specifies a 3/32” chain, BMX/SS chains floats back and forth on the tooth. The chainring tooth radii are slightly larger than the bushing section, so the chain hops up and down a little. The same goes for our chainring which is 2mm wide, to allow for use in 1x9 systems or with a 9 speed chain.
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What is the q-factor of the fifteen.g cranks?
Q-factor is 166mm
