Is this a normal amount of play? The video is slowed down to .5x speed, and my front brake is being applied.
When I first built the bike, the front end was very stiff. But after a head on collision with a careless electric scooter, I've been noticing the front end oscillating under braking and on rough roads. I am not sure if I am being paranoid, or if there is a legitimate issue.
I've inspected the headset bearings and they felt smooth. Then I reinstalled them with grease and properly preloaded the top cap before tightening the bolts. I must have repeated this process 4 times now. Although, I am starting to wonder if my wheel bearings are simply shot.
Cause of front end wobble?
byu/clueless_tourist_gas inbikewrench
by clueless_tourist_gas
11 Comments
This looks like your brake pads rocking back and forth in the caliper, which is normal. However, after a front end impact I would carefully inspect the headset cups, steer tube, and crown race for any cracks. Also ensure you are using the correct headset bearings.
If you’re sure it’s not a loose headset, then wheel bearings are next to examine. Or it could be a loose disc rotor. They’re all fixable. If they all seem fine, it’s time to drop that fork again and start inspecting the steerer tube, fork blades and even the dropouts.
either your caliper or brake rotor are loose
Try adjust the headset bung.
El juego que se ve en la rueda delantera es el movimiento de las pastillas de freno sobre el pasador de la pinza. Es decir, las pastillas están mordiendo el disco y estas se mueven adelante y atrás siguiendo el movimiento de la rueda el margen que le permite el juego del pasador.
Repite el test mirando tu pinza de freno delantera y las pastillas y las verás moverse ligeramente adelante y atrás. Es un movimiento mínimo en el centro pero conforme te alejas hacia la rueda y la cubierta se hace más perceptible.
Resumen: completamente normal. (Siempre que hayas revisado que la dirección no tiene holgura)
Pads moving in the caliper.
Hold the brake, move back and forward a d watch the tops closely
For me this wobble was usually a loose headset. I’d open it and re-tighten according to specs.
It may sound very obvious but did you check if the wheel is tight?
As already stated it does not look like your headset. I don’t see the fork moving in comparison to the head tube. The fact that the wheel is still moving wile you have the brakes locked hard would make me look at the rotor and disk. Start there as that’s most likely. Then I would also check the hub bearings.
There are lots of videos on YouTube that show how to check for excessive play in the wheel hub.
If you strike out on all of those things I would suggest it’s time to take it to a shop with a good mechanic.
Good luck
Do you have center lock disks? That looks like a little play between the rotor and the splines. Mine did this even at correct torque. Not clear if it’s a concern or not.
Related post
https://www.reddit.com/r/bikewrench/s/mUFJrqTOl8
I once had that problem and it turned out it was the bearings in the hub that were causing it.