Uploaded January 2026 | Updated September 2026, 2 weeks ago
We see "5Nm" written all over our bikes, but is that number always accurate? . In this video, we dive into the physics of torque, friction, and why adding grease to a bolt might actually mean you are over-tightening your components.
Whether you are working with carbon handlebars, titanium bolts, or just trying to stop your stem from creaking, understanding how lubrication affects clamping force is crucial to keeping your bike safe.
🔧 Key Takeaways:
Assume Factory Settings: If a bolt has a pre-applied patch (blue/white), install it dry to the specified torque unless the manual specifically asks for grease .
The 25% Rule: If you decide to add grease or anti-seize to a bolt that was designed to be dry, you must reduce your torque setting. A good rule of thumb is to reduce it by 25% to account for the reduced friction .
"Max" is a Limit, Not a Target: Aim for the lowest torque required to stop the part from moving. If the spec says "Max 5Nm," you don't have to hit 5Nm .
Watch for "Hydraulic Lock": Be careful with blind holes (like on brake calipers or some thru-axles). Too much grease can get trapped and prevent the bolt from tightening properly .
Technique Matters: Always hold your torque wrench by the handle (not the shaft) and remember: you can't measure torque on a stationary bolt. The bolt must be in motion for the wrench to click accurately .
⏱️ TIMESTAMPS:
00:00 - When is 5Nm NOT 5Nm?
00:47 - The 4 Risks (Cracking Carbon & Stripping Threads)
02:36 - The Physics of Torque (T = K x D x F)
03:34 - Dry vs. Lubricated Friction (K-Factor)
04:24 - Factory Settings: What do the brands say?
07:02 - Dealing with "Mixed" Bolts (Grease + Threadlocker)
08:34 - What is Hydraulic Lock?
11:07 - The Solution: The 25% Reduction Rule
12:50 - How to "Stress Test" Your Work
14:28 - Torque Wrench Tools & Technique
#BikeMaintenance #TorqueWrench #CyclingTips #CarbonBike
We see "5Nm" written all over our bikes, but is that number always accurate? . In this video, we dive into the physics of torque, friction, and why adding grease to a bolt might actually mean you are over-tightening your components.
Whether you are working with carbon handlebars, titanium bolts, or just trying to stop your stem from creaking, understanding how lubrication affects clamping force is crucial to keeping your bike safe.
🔧 Key Takeaways:
Assume Factory Settings: If a bolt has a pre-applied patch (blue/white), install it dry to the specified torque unless the manual specifically asks for grease .
The 25% Rule: If you decide to add grease or anti-seize to a bolt that was designed to be dry, you must reduce your torque setting. A good rule of thumb is to reduce it by 25% to account for the reduced friction .
"Max" is a Limit, Not a Target: Aim for the lowest torque required to stop the part from moving. If the spec says "Max 5Nm," you don't have to hit 5Nm .
Watch for "Hydraulic Lock": Be careful with blind holes (like on brake calipers or some thru-axles). Too much grease can get trapped and prevent the bolt from tightening properly .
Technique Matters: Always hold your torque wrench by the handle (not the shaft) and remember: you can't measure torque on a stationary bolt. The bolt must be in motion for the wrench to click accurately .
⏱️ TIMESTAMPS:
00:00 - When is 5Nm NOT 5Nm?
00:47 - The 4 Risks (Cracking Carbon & Stripping Threads)
02:36 - The Physics of Torque (T = K x D x F)
03:34 - Dry vs. Lubricated Friction (K-Factor)
04:24 - Factory Settings: What do the brands say?
07:02 - Dealing with "Mixed" Bolts (Grease + Threadlocker)
08:34 - What is Hydraulic Lock?
11:07 - The Solution: The 25% Reduction Rule
12:50 - How to "Stress Test" Your Work
14:28 - Torque Wrench Tools & Technique
#BikeMaintenance #TorqueWrench #CyclingTips #CarbonBike
