Rear wheel play?

[Beezerk]

I've noticed recently if I'm sat on my bike with the rear brake on, I can make the bike rock backwards and forwards by around 10mm if that makes sense?
It's like there is something loose or worn where the cassette fits onto the rear hub.
It is definitely the wheel that is moving independently and not the cassette or chain etc.
Now I know very little about how cassettes are fitted onto the hub, it just slots onto a shaped hub and you tighten it up right? ?
The bike is a Whyte E-150 and has been rock solid, I'm just wondering what could be wrong before I get my spanners out and start fiddling.

 

[DtEW]

I've noticed recently if I'm sat on my bike with the rear brake on, I can make the bike rock backwards and forwards by around 10mm if that makes sense?
It's like there is something loose or worn where the cassette fits onto the rear hub.
It is definitely the wheel that is moving independently and not the cassette or chain etc.
Now I know very little about how cassettes are fitted onto the hub, it just slots onto a shaped hub and you tighten it up right? ?
The bike is a Whyte E-150 and has been rock solid, I'm just wondering what could be wrong before I get my spanners out and start fiddling.

Neither your cassette nor freewheel is involved if you have your rear brake on and can rock your bike fore-and-aft. The play is either in your hub axle, or in the chain of brake interfaces between the hub and the caliper mount.

 

[PhilBaker]

How strange, I just noticed a similar issue today. As I'm accelerating and changing gear, as the gear changes it feels like the rear wheel moves slightly to the left as it clunks when it engages the gear.

The cassette has no play, but if I grab the rear wheel with both hands there and try to move it from left to right, there does seem to be some play. Is this a potential rear hub issue and if so how do I diagnose/rectify it?

I have done 2,000 miles now on this FF eMTB so does the additional power of an eMTB wear out the rear hub more rapidly?

Thanks all.

 

[HGmtb]

I've noticed recently if I'm sat on my bike with the rear brake on, I can make the bike rock backwards and forwards by around 10mm if that makes sense?
It's like there is something loose or worn where the cassette fits onto the rear hub.
It is definitely the wheel that is moving independently and not the cassette or chain etc.
Now I know very little about how cassettes are fitted onto the hub, it just slots onto a shaped hub and you tighten it up right? ?
The bike is a Whyte E-150 and has been rock solid, I'm just wondering what could be wrong before I get my spanners out and start fiddling.

Maybe it is just the brake pads moving back and forward in the calipers - 10 mm of bike movement is probably less than 2 mm movement of the brake pads.
The pads can't be a tight fit in the calipers, otherwise they could jam on, and anyway even if they are a bit loose, it doesn't affect the braking performance.

 

[Sander23]

Or maybe the wheelbearings?

 

[Mteam]

How strange, I just noticed a similar issue today. As I'm accelerating and changing gear, as the gear changes it feels like the rear wheel moves slightly to the left as it clunks when it engages the gear.

The cassette has no play, but if I grab the rear wheel with both hands there and try to move it from left to right, there does seem to be some play. Is this a potential rear hub issue and if so how do I diagnose/rectify it?

I have done 2,000 miles now on this FF eMTB so does the additional power of an eMTB wear out the rear hub more rapidly?

Thanks all.

if its play when you grab the wheel and wiggle it side to side, then its most likely worn bearings in the hub - I dont know what specifc hub you have, but they're usually easy and cheap to replace, but before you do that just check the axle is done up tight.

I've noticed recently if I'm sat on my bike with the rear brake on, I can make the bike rock backwards and forwards by around 10mm if that makes sense?

If the wheel is rotating slightly with the back brake on, then as dtew above says, its some play in the brake system, either the caliper where it mounts to the frame , the pads in the caliper , or the disc where it mounts to the hub. If its a centrelock disc they can come slightly loose, or if its a floating rotor, the braking surface can become slightly loose from the spider it attaches to.

 

[thebarber]

My rear wheel is slack , spoke tension is piss poor and I've managed to crack the axle guide somehow.
New wheel getting built then I'll sort this one.

 

[Beezerk]

if its play when you grab the wheel and wiggle it side to side, then its most likely worn bearings in the hub - I dont know what specifc hub you have, but they're usually easy and cheap to replace, but before you do that just check the axle is done up tight.



If the wheel is rotating slightly with the back brake on, then as dtew above says, its some play in the brake system, either the caliper where it mounts to the frame , the pads in the caliper , or the disc where it mounts to the hub. If its a centrelock disc they can come slightly loose, or if its a floating rotor, the braking surface can become slightly loose from the spider it attaches to.

Thanks, I never considered the brakes could be the issue, I'll check them out ?