Tools you should have at home
Most adjustment work on handlebars and road bike saddles can be done by anyone, and the necessary arsenal of tools is manageable. Here is an overview of what you should have at home.
- Hexagon socket or Torx spanner, depending on the model. The "Y" tool combines the most commonly used sizes 4, 5 and 6 millimetres and saves time on simple jobs; the tool is also available for Torx screws.
- A maximum torque is specified for most connections, which should not be exceeded. A small torque spanner (up to approx. 10 Nm) is therefore mandatory.
- Assembly paste (also known as carbon paste) increases the friction between the parts with small particles and also protects against corrosion. A must for carbon components, but also helps with aluminium handlebars.
- Grease should be applied to all screw threads; it also protects aluminium seat posts from seizing up in metal frames. Keep away from carbon parts!
- Spirit level as an aid for the position of the road bike saddle and handlebars; a tape measure is also useful for some work.
The most important torques
- Gear lever 5-6 Nm
- Handlebar clamp 4-6 Nm
- Stem cap 1-2 Nm
- Stem clamp 4-6 Nm
- Seat post 3-5 Nm, varies greatly depending on the clamping principle
- Saddle 5-7 Nm (with two screws)
General professional tips
- Use the torque spanner to develop a feel for how tight the individual screws need to be tightened. This avoids mistakes if you only have a mini tool to hand when travelling.
- Do not use corroded or damaged screws. Grease all screw threads, including under the screw head. This reduces the required torque and sensitive components will then clamp securely.
- Some screws are factory-fitted with threadlocker - in this case the thread is not greased. Only apply a little under the screw head.
- Always keep safety-relevant clamps (handlebars, shifters, steerer tube) and carbon parts free of grease! If in doubt, use assembly paste.
- Clamp connections settle after some time and the clamping force of the bolts decreases. You should therefore check the torque and the tightness of the parts after around 200 to 300 kilometres.
The road bike saddle
Once the road bike saddle is correctly adjusted, everything is fine, but the road to getting there can be rocky. Here's how to avoid typical pitfalls when fitting the saddle.
Correctly adjusting a road bike saddle
For supports with two screws, adjust the inclination by tightening the screws differently. Work with low torques and then tighten evenly with the torque spanner. In the case of posts with lateral clamping jaws (picture below), the inner mounts are braced in the post when tightening. The saddle on a road bike should be levelled (check with a spirit level) if the bike is standing on level ground. If the saddle nose presses against the crotch, it can also point slightly downwards.
Ensure suitable clamping on the road bike saddle
Saddle racks are usually round (diameter 7 mm), carbon racks are often highly oval (7 x 9 mm). Most seat posts that hold the frame from above and below in two channels are suitable for both. However, seat posts that clamp from the side require special mounts for highly oval frames.
Professional tips: Road bike saddle adjustment & maintenance
In the case of posts with lateral clamping jaws, the individual parts easily seize up in the post. To adjust the angle, the road bike saddle must be removed and the clamp usually completely dismantled. A light tap is often necessary to loosen the clamp. Initially, only tighten the screw very lightly so that the angle can still be adjusted.
Look out for clamps that enclose the saddle frame over a large area. Narrow bars or sharp edges can damage the frames of lightweight saddles in particular. The saddle frame must be clamped in the designated area - never in one of the bends!
Saddle clamps and road bike saddles are often sources of annoying noises. The clamp is exposed to dirt and water from the rear wheel and should be regularly dismantled, cleaned and lightly greased. Use assembly paste on carbon frames. If the creaking comes from the saddle, it is usually the frame in the mount on the saddle cover. In this case, a little silicone spray or spray oil at the relevant points will help.
Jens Klötzer
Editor
