rear end thumping

[bandito]

I am getting a slight thumping feeling from the rear end after about 30 minutes of riding. Rear tire is new. Just wondering if anyone knows why or if this is normal?

 

[Bert-Aus]

Can you describe it more? May help readers understand your symptoms better

Sent from my LT18i using Tapatalk 2

 

[dart1963]

tires, brakes, chain... not much else too it... take a few pics and post 'em up might help as well

 

[alaskanflyboy]

That it takes a little before it appears, I'm imagining it's not happening until the tires warm up and the chain wax softens. Try getting the chain warmed up, cleaned, and re-lubed. Try checking the chain for a hard spot that may be affecting the way the chain goes around the sprockets.

 

[buzzbomb]

You said it was a new tire, but a thumping from the rear? My first thought would be a foreign object. It only happens when it's hot?

Try this. Run around until you feel the thumping. Go home. Put the backside up on a paddock stand. Spin the rear tire slow and fast, from the side, watching the tread where it would meet the road. Place a ruler of some other straight object against the stand, if it helps you watch the tread for signs of a "bump."

Doing this, the rear sprocket will also be in your line of sight. Look to see if there's a point where the chain doesn't go around the sprocket like it does all the other time.

What you're looking for is a possible deformation in the new tire, a foreign object in said tire, or a stuck link your chain.

Hope it helps and good luck!

 

[bandito]

I did notice that the rear disc is some what warped buy the way it moves and sometimes sqeaksat very low speeds. Wil try the other methods when I have a chance.thanks