GUIDE · MECHANICAL LOAD
100 km is not always 100 km: mechanical load and bike wear
A dry afternoon on tarmac does not punish your drivetrain like a rainy gravel ride, even if both add up to the same distance. Mechanical load is a way of expressing that difference: how much you have really asked of your equipment, beyond distance.
Pedalytics is in preparation and cannot be downloaded or used yet. This guide explains the approach it is being built around. Meet Pedalytics
Why distance can mislead
Picture two rides of the same length: one on flat, dry tarmac and one on gravel with rain and climbing. On the second, the chain works with more friction and dirt, the brakes are used more on the descents and the tyres take more punishment. The odometer shows the same; your equipment does not.
If you replace parts by mileage alone, you will end up replacing some too early and others too late.
Which factors drive the load
- Terrain: tarmac, gravel, dirt or trail do not demand the same from the drivetrain, the tyres or the suspension.
- Rain: water washes away lubricant and speeds up dirt build-up on the drivetrain and brakes.
- Mud: it is abrasive and collects on the chain, cassette, chainrings and brakes.
- Climbing: lots of ascending and descending raises the drivetrain's effort and the use of the brakes.
How to reason about load without a tool
- Separate rides by bike: the load falls on the parts each one carried.
- Note the conditions of hard rides: rain, mud and climbing.
- Check equipment sooner after a demanding ride than after an easy one, even when the distance is similar.
- Clean and lubricate the drivetrain after rain or mud.
- When a part has no reliable interval, inspect it regularly.
How Pedalytics expresses it
Pedalytics, still in preparation, separates distance ridden from mechanical load and shows you which conditions explain the difference. Its approach has three traits:
- Explainable: every equivalent kilometre keeps the context that produced it, instead of being an opaque alarm.
- Per bike and per part: the load is shared among the components you had fitted.
- Time to decide: you can see which rides have demanded most from your equipment before maintenance is overdue.
What mechanical load is not
Mechanical load is not a sensor reading: it is estimated from terrain, rain, mud and climbing. It does not replace visual inspection or the manufacturer's guidance, which is why you should always be able to see where it comes from.
Frequently asked questions
What is mechanical load?
It is the demand your components have endured on a ride. It takes into account more than distance: terrain, rain, mud and climbing.
Is it an exact measurement?
No. It is an explainable estimate, not a direct measurement, which is why Pedalytics always shows where it comes from.
Why do rain and mud count?
Because they wash away lubricant and act as an abrasive on the drivetrain and brakes, so the same distance wears things more.