TriRig Mercury: Installation and F.A.Q.

 Jun 27, 2013 article & images by Nick Salazar

Mercury is currently out of production.

So, assuming your head isn't spinning from all the new information we just described on the previous page, let's get right in and talk about how to actually USE these pedals.

Mercury is a very elegant, minimal system. It's very easy to install, adjust, and maintain. Installation is very simple and straightforward. Here are the basic steps:

Mercury Installation
  • The Mercury pedals can be differentiated by a small stripe feature near the base of the pedal. The non-drive-side pedal has the stripe; the drive-side pedal is smooth. Also, the drive-side pedal features right-hand threading, the non-drive-side pedal uses left-hand threading.
  • Mercury installs similarly to other road bike pedals. Begin by screwing the pedal body into your crank by hand, until it is snug against the crank arm. Then use an 8mm allen wrench, inserted from the inside face of the crank arm, to finish tightening the pedal to the crank arm. Use a high amount of torque to secure the pedal, the maximum torque will be specified by your crank manufacturer, likely between 15-20 Nm.
  • The Mercury pedal features adjustable stance width, which is set through the use of spacers behind the sleeve bearing. The pedals come with the 3mm spacer pre-installed, and also include a 6mm spacer. The user can remove all spacers (+0mm), use the small spacer (+3mm), use the large spacer (+6mm), or use both spacers (+9mm).
  • To install pedal spacers, simply unscrew the alloy end cap bolt on each pedal using a 4mm allen wrench. Remove the sleeve bearing and install the selected spacers. Then replace the sleeve bearing. For each spacer installed, thread a corresponding washer onto the end cap bolt before replacing the bolt. These washers ensure the bearing will spin freely with the spacers installed. Tighten the end cap bolt to 3 Nm.
  • Mercury cleats also install much like standard three-hole road cleats. Begin by placing an elliptical sub-washer on each of the oval-shaped holes in the Mercury cleat. Then install the cleat onto your shoe ensuring that each M5 bolt threads through a round washer, the elliptical sub-washer, and into your shoe. This will ensure a good fit and extend the life of your cleat.
  • Mercury cleats are symmetrical and identical - there is no specific left or right cleat. The cleats have similar circular adjustment characteristics as other traditional road cleats, but Mercury has a slightly limited range; they can be rotated, moved fore/aft and laterally a few mm in every direction.
  • We manufacture the Mercury cleats with a fiberglass-infused nylon blend that is very strong and durable. They are robust and built to last. But like any cleat, they will eventually wear out and need to be replaced. Replacements will be available in the TriRig Store.
    OS Bearings
  • Every Mercury assembly sold comes with two sets of bearings. The standard grey bearings are pre-installed on the pedals. A second set of brown oversized bearings ("OS bearings") are included in the box, which are to be used if you are experiencing poor cleat retention or accidental clip-outs.
  • The reason to use the OS bearings is simple. Some cycling shoes have highly-curved soles, which can cause the Mercury cleat to "open" very slightly when it is installed. When that happens, it can result in poor cleat retention or accidental clip-outs. We designed the OS bearings with a very slightly larger outer diameter, which solves this problem without adding any weight or complexity.
  • Installing the OS bearings is simple; simply unscrew the End Bolt, slide the standard bearing off, and slide the OS bearing on. They work exactly the same as the standard bearings, they're just a little bit tighter.

Please refer to the video below for proper engagement/disengagement technique, and a detailed assembly information for Mercury. And again, please have a look at the captions to the gallery images below. They provide some additional detail about the pedals that may be good to know.

  • This is the TriRig Mercury - our take on the perfect pedal.
  • Mercury pedals are simplicity defined. Just three parts per pedal, and they look oh so good. The revised bearings are now just a simple cylinder. The lateral retention flanges have been moved to metal components for greater durability.
  • The new nylon bearing material we've selected is more durable than before, and almost looks a bit like carbon fiber. Works for me!
  • The system is held in place by an M8 End Bolt that also provides lateral cleat retention. The non-drive side bolt (left) has the stripe, and standard threads. The drive-side bolt (right) is plain, and reverse-threaded.
  • Mercury's cleats are as simple as the pedals. The one-piece nylon construction is simple to use and simple to clean. And there's just a touch of TriRig class with the TR logo embossed into each cleat body.
  • The non-drive-side pedal (right) is identified by the small stripe on the spindle.
  • And here is the money shot. Just 93g for both pedals, and no rider weight limit.
  • Just 151g for the complete system including cleats and all hardware.
  • When using the black Spacers (left) to adjust the pedal's Q-factor, you must also slide the corresponding aluminum washer (right) onto the End Bolt. For each pedal, you can choose +0mm, +3mm, +6mm, or +9mm of Q-factor adjustment.
  • Shown here is the 6mm spacer being installed on the non-drive-side pedal. The 6mm washer is on the End Bolt.
  • The cleat bolts are very straightforward. The oval Sub-Washer (far right) is installed first, to distribute load evenly on the nylon cleat. Then the M5 washer (center) slides on the bolt, and you tighten as normal.
  • Here's the cleat with just the oval Sub-Washers installed.
  • It can be confusing to talk about reverse and standard threads without a visual to help wrap your brain around it.
  • Another detail shot of the stripe which helps to help differentiate the drive-side from non-drive-side pedal.
  • The standard grey bearings come pre-installed on the Mercury pedals (left). A second set of dark brown Oversized Bearings are included with the Mercury pedals for use if your particular installation results in low cleat retention and/or unintended clip-outs.

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