Replacement of cassette/chain

[Longbarn Killer]

Following on to the ruined 94.7 race thread, it got me thinking.

 

My current cassette has 20 000plus kms on it and the chain about 17 000plus kms on it.

 

I bought a new cassette and chain about 4 years ago and it's still sitting in my garage waiting for me to fit.

 

My current set up works perfectly, but I think it's time for the new parts to be fitted.

 

My question is, having such high mileage on my current drivetrain, will I need to replace the chain rings too?

 

I'm worried the chain will slip on the front.

[BrandonF_]

Probably...(DEFINITELY)...yes.

[Boerklong]

^^^ this ^^^

[WrightJnr]

I smell a rat here. There's 3000plus km's missing link here.

[Longbarn Killer]

I smell a rat here. There's 3000plus km's missing link here.

I replaced the chain at 3000km as I read that a chain should be replaced every 2500kms. So this is the second chain with the first cassette

[Pah Bear]

AND then road 17k with the second chain? Wow.

[Paulst12]

Most likely... You should buy a chain measure (not expensive), and replace it before it gets to 50% worn. That way to will preserve the cluster and front chain rings.

Now its going to cost some big $

[Reg Lizard]

Inch ruler is what you need...those chainwear measurer's were designed to sell new chains  I once bought a new chain and measured it just out of interest  According to the chainwear measurer the chain needed to be replaced

[Longbarn Killer]

Most likely... You should buy a chain measure (not expensive), and replace it before it gets to 50% worn. That way to will preserve the cluster and front chain rings.

Now its going to cost some big $

Actually, I think I've saved some money. If you go on the principle of a new cassette after every second chain and the principle that a chain should be changed every 2500 to 3000kms. By now, I should have bought 3 cassettes and 6 chains. In today's terms thats about R3 300.