Looking for parts - Chain / Sprocket, 38 teeth to 55 links

[Rajol]

Kia ora ko tau

I'm new to changing sprockets/chains

I've regularly kept mine in check, and over the last 8000ks I have moved the wheelback as far as it can go to keep it tight

It has now become too loose and can not be tightened anymore


- for a 250cc

the teeth on the rear sprocket was 38
and the links on the chain was at 55

Where might I buy these new?

I saw some on trademe, but I'm not sure if all sprockets/chains are compatible with all bikes (newbie, is it just a general rule that all sprockets fit?)

I would like to be able to move the rear tire forward again, so would I need 54 links on the chain? or has my old 55 chain kind of stretched over time?

I'm aware the original setup of 38 for 55 was for power, which I'm not really too concerned of anymore, I just want something safe that's tight and will not fall off

-
last but not least, any good places I can drive to in Auckland(close to city centre) that would sell parts like this in the shop?

cool bananas

also any other tips you could give me would be greatly appreciated

cheers

[Madness]

A chain should never be "tight".

[Rajol]

A chain should never be "tight".

*tighter, mine came off 4 times this morning, the slack is too large and can't be tightened any more

The slack is huge

[frogfeaturesFZR]

Your old chain has'stretched' over time. A new chain will be shorter as it's less worn. Ring a couple of bike shops for price comparisons. Confirm with them the correct size of the chain. Might need to replace both sprockets as well.

[Rajol]

Your old chain has'stretched' over time. A new chain will be shorter as it's less worn. Ring a couple of bike shops for price comparisons. Confirm with them the correct size of the chain. Might need to replace both sprockets as well.

Thanks, will do.

I looked at the drive sprocket, it seems to be in good condition. The rear one if F*d up, so will definitely replace it.
Wasn't sure if they could stretch, but seems so.

Cool cool

[haydes55]

If you're a cheap ass just get a chain breaker, taker off a couple of links and use the right size chain joiners (don't use half links, they are the first ones to get thrown).

[russd7]

if your chain is faffed and your rear sprocket is faffed then best replace the front sprocket as well or you just gonna faf the new chain, the front sprocket will have wear that the new chain wont fit in to snuggly. might i also suggest you chuck some oil on ya chain more regularly as it shouldn't stretch that much under normal wear