LAISAHeadshake under acceleration
When your bike shows "Headshake under acceleration", these are the most likely causes - ranked by relevance: Rear ride height, Fork height in clamps, Throttle control on corner exit (MX). LAISA separates setup causes (adjusters, components) from riding technique.
Short answer for this problem
- Recommended starting point
- Check first: Chassis: Rear ride height
- Most important change
- Smallest documented change: 1 mm - shock length adjustment
- Why
- Too much rear ride height steepens the geometry and lightens the front on the gas - lower the rear a little.
- How to test it
- Read the current value off the bike and compare it with the recommended one. Write it down before you change anything.
- Source
- LAISA diagnosis catalogue, hand-authored and editorially released Methodology →
- Last reviewed
- No review date documented
The order comes from the stored strength of the symptom-cause link in the catalogue - per symptom, not across symptoms. These are not probabilities and not measurements.
Suspension
Why this could fit: Too much rear ride height steepens the geometry and lightens the front on the gas - lower the rear a little.
How to check it: Read the current value off the bike and compare it with the recommended one. Write it down before you change anything.
Smallest change: 1 mm - shock length adjustment
Why this could fit: Too much fork protrusion makes the steering nervous - reduce it for more stability.
How to check it: Read the current value off the bike and compare it with the recommended one. Write it down before you change anything.
Smallest change: 1 ring - tube protrusion above top clamp
Technique
Free. Pick bike, track and riding style.
Related symptoms
A starting point to verify on the bike - not a safety guarantee. Change one thing at a time and check on track.