Wobble under hard braking

[benb]

The other day I was coming at a fair old lick down a hill, and had to apply my brakes rather boldly.
The front of the bike developed a rather alarming wobble.

Is it just one of those things that happens, or can I do something about it?

 

[PK99]

The other day I was coming at a fair old lick down a hill, and had to apply my brakes rather boldly.
The front of the bike developed a rather alarming wobble.

Is it just one of those things that happens, or can I do something about it?

What sort of bike, brakes and forks?

 

[benb]

What sort of bike, brakes and forks?

Planet X Carbon Pro
SRAM Rival brakes
Spec here: http://planet-x-bikes.co.uk/i/q/CBPXSLPRIV13/planet_x_pro_carbon_sram_rival_road_bike

 

[benb]

[QUOTE 2487220, member: 30090"]Check for play in the wheel and headset/stem.[/quote]


How do I do that? Clamp the wheel between my knees and try and move the handlebars?

 

[ianrauk]

How do I do that? Clamp the wheel between my knees and try and move the handlebars?

Hold the front brake and push and pull to see if there is any movement in the headset.

 

[Shut Up Legs]

Also check the front wheel for sideways wobble, to see if the front hub needs adjustment.

 

[benb]

[QUOTE 2487718, member: 30090"]Geez man. Not being funny like but these are basic checks that should be carried out periodically as part of a clean and service.[/quote]


Thanks for that valuable contribution.

The bike is brand new, so obviously everything should be OK with it.

 

[Sittingduck]

Is the wobble fore & aft?
Could also be worth checking the brake caliper is attached to the forks tightly enough... just a thought, if the headset isn't an issue.

 

[benb]

Is the wobble fore & aft?
Could also be worth checking the brake caliper is attached to the forks tightly enough... just a thought, if the headset isn't an issue.

No, left and right.

 

[Sittingduck]

Have you re-seated it in the drop outs / checked QR tension?

 

[fossyant]

Could be speed wobble caused by the braking, in which case there is bugger all you can do !

 

[benb]

Could be speed wobble caused by the braking, in which case there is bugger all you can do !

That's my thinking, as it has only ever done it once, when I was going at a fair old lick.

Cheers all.

 

[Herzog]

Natural wobble would also be my guess!