SP2 Pedal Stages Indoor Cycling Bike Pedal Instructions
- June 3, 2024
- STAGES
Table of Contents
Technical Service Bulletin
July 29, 2022 TSB
CATEGORY
TSB#-07292022
| Title: | Pedal Thread Grease vs Blue Threadlocker Considerations |
|---|---|
| Models: | Stages Dual-Sided Pedal, SP2 Pedal, and SP3 Pedal |
Introduction:
Stages pedals are currently shipped with blue thread-locking compound on the threads to help prevent pedals that were not properly tightened from loosening over time.
For existing Stages pedals in the field, we are reiterating the need to apply
full torque and achieve full seating of the spindle against the crank.
With the introduction of our next-generation pedal, we are fully eliminating
the thread-locking compound and recommending only grease be applied to the
threads prior to installation. This ensures easy installation and tightening
of the threads.
This guide is intended to describe the use and application of the blue thread-
locking compound and the considerations for producing new pedals without said
compound.
Model Applications:
Stages Dual-Sided Pedal, SP2 Pedal, and SP3 Pedal
Witnessed Service Concerns:
Problems encountered because of the thread-locking compound include the
following:
- Pedals are tightened only a few threads to where the thread locker begins to add resistance.
- Wrenches are used sooner for threading pedals with locking compounds. This results in cross-threaded crank arms because the installer expects resistance when tightening.
- Torque wrenches are not being used in the field to reach the required 42 N⋅m (31 ft⋅lb) torque.
Related Failures Observed:
Pedal failures or quality concerns related to this technical service bulletin:
- Crank arm threads cross-threading or stripping out
- Pedal spindles shearing part way down the threads
- Pedal threads becoming damaged and stripping
New Service Action:
- Always emphasize the use of an appropriate pedal wrench and tightening torque value. Even if very few torque wrenches are used, the appropriate pedal wrench will get the pedals close to the desired torque.
- Before pedal installation, identify if provided pedals have pre-applied locking compound or not.
a. For pedals with blue thread locker, ensure that the pedal is installed such that spindle shoulder bottoms appropriately onto the crank arm face before tightening to required torque. Inexperienced users will not realize that a hard-to-turn pedal is actually caused by the locking compound binding rather than a bottomed and fully seated spindle.
b. For pedals without a blue thread locker, apply a coating of grease to the threads to promote smooth threading. This grease will ensure a fully-bottomed pedal spindle and prevent a false torque value when tightening.
For entire installation procedure of pedals, See Appendix A on pages 3-4.
Justification:
- A fully bottomed spindle transmits loads through the shoulder rather than the threads.
- With thread locker applied, pedal spindle service issues have not been significantly reduced.
- After testing, we determined that using grease on the spindle was the best method to achieve proper tightening torque.
APPENDIX A – Pedal Installation Procedure
Tools required: 15 mm pedal wrench. While it may be possible to use a hex wrench to attach pedals to the crank, it is not recommended.
-
Match the corresponding pedals to the left and right crank arms. Refer to pedal documentation or the thread direction for help determining which is the right and left pedal.
ATTENTION:
User-based left pedal threads turn counter-clockwise. User-based right pedal threads turn clockwise. Verify right and left-hand pedal sides before attempting to install.
-
Before installing, apply a light coating of grease to pedal threads. This grease helps ensure the pedal bottoms on the crank arm.
NOTE:Grease intended for bicycle applications is recommended.
Vendor| Description
|
Park Tool| PolyLube 1000
Finish Line| Premium Grease
Phil Wood| Waterproof Grease
White Lightning| Crystal Grease -
To attach the pedal, begin by hand to thread the spindle into the crank arm to ensure the pedal threads begin without cross-threading.
-
Once each pedal is threaded correctly, use a 15 mm pedal wrench to firmly tighten the pedal. The specified torque is 42 N⋅m (31 ft⋅lb). Note the orientation of left and right pedals and the associated turning direction.
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